CN105155770A - Prefabricated hollow slab - Google Patents
Prefabricated hollow slab Download PDFInfo
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- CN105155770A CN105155770A CN201510642482.5A CN201510642482A CN105155770A CN 105155770 A CN105155770 A CN 105155770A CN 201510642482 A CN201510642482 A CN 201510642482A CN 105155770 A CN105155770 A CN 105155770A
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Abstract
The invention provides a prefabricated hollow slab, which comprises a top layer, a bottom layer, a hollow device and a special grid truss for the prefabricated hollow slab, wherein the hollow device is arranged between the top layer and the bottom layer; the special grid truss for the prefabricated hollow slab comprises two meshes in opposite and separated arrangement; at least one rib in vertical arrangement to the meshes is arranged between the two meshes; at least one penetrated transverse pipe is arranged on the pipe wall of the hollow device; and the hollow device is arranged between the two meshes. Therefore the prefabricated hollow slab can be formed through one-step casing in a prefabricated hollow slab forming mold; the occurrence of the condition of nonuniform prefabricated hollow slab hole wall cannot be caused; the at least one transverse pipe transversely penetrating through a pipe body is arranged on the pipe wall of the pipe body; a concrete post body can be formed in the prefabricated hollow slab; and two slab surfaces of the prefabricated hollow slab can be tensioned into a whole.
Description
Technical field
The present invention relates to a kind of building piece, particularly a kind of precast hollow slab.
Background technology
China's Urbanization Construction is fast-developing, and construction scope ranks first in the world.Current, industrialization of construction industry is extremely urgent, and builing industry green construction transition, energy-saving and emission-reduction in building course, manufacture the precast hollow slab with superior structural performance, extremely need in order to build assembled architecture.
At present, the reinforced concrete floor of domestic employing has cast-in-situ floor and precast hollow slab floor, cast-in-situ floor good integrity, but needs on-the-spot formwork, then concreting, construction period difficulty is large, and template loss is large, and cost is high, and prefabricated building hollowcore slab does not need on-the-spot formwork, short construction period, cost is low, is therefore widely used in all kinds of building.
Such as, be: in the application documents of CN201320705360.2 that disclose a kind of full prefabricated hollow floor, comprise floor main body, floor main body comprises bottom, hollow device and top layer, is hollow device between bottom and top layer at number of patent application; Bottom is that the baseplate reinforcing bar of layer of concrete and top colligation thereof is formed; Top layer is roof steel bar, and concreting layer is formed.This full prefabricated hollow floor is owing to forming cavity at intralamellar part, alleviate the weight of floor self, compare laminated floor slab and also do not need second pouring, environmental protection and save the duration, but in the manufacturing process of this floor, need colligation baseplate reinforcing bar and roof steel bar, efficiency of construction is lower, and the quality of prefabricated hollow floor is also difficult to ensure.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of precast hollow slab, and it can improve efficiency and the quality of precast hollow slab making.
Solution of the present invention is achieved in that a kind of precast hollow slab, comprise top layer and bottom, and the hollow device be arranged between top layer and bottom, described precast hollow slab also comprises the special rack of precast hollow slab, the special rack of described precast hollow slab comprises the mesh sheet that two relative spacings are arranged, at least one and the vertically disposed rib of mesh sheet is provided with between two mesh sheet, the tube wall of described hollow device is provided with the transverse pipe that at least one is through, described hollow device is arranged between described two mesh sheet.So, because being provided with hollow device between the top layer and bottom of precast hollow slab, when hollow device is through hollow section, be embedded in precast hollow slab as non-core-drawing pore-creating component, precast hollow slab can in precast hollow board forming die one-time cast-forming, when hollow section is applied in precast hollow slab, its end is through, if also arrange support to loose core mould in hollow section, after pouring concrete completes, mould of support being loosed core is extracted out, can significantly reduce hollow section pipe thickness, also hollow section can not be caused to be out of shape, and then, the situation that precast hollow slab hole wall can not be caused uneven occurs, similarly, if when hollow section tube wall rigidity is enough to support pouring concrete load, then do not need to arrange support to loose core mould, also the uniform effect of hollowcore slab hole wall can be reached, in addition, after being provided with at least one and the vertically disposed rib of mesh sheet between two mesh sheet, rib improves the globality of rack, make it when being mounted in precast hollow board forming die, not easily swinging deformation, described rack is applied to after in precast hollow slab, because it is two-sided mesh sheet rack, precast hollow slab biside plate volume property is even, be especially suitable for use as exterior wall, as adopted the mesh sheet of asymmetric diameter, then can according to mechanical property, thick gusset face is placed in bottom, thus can be used as floor use, as rib adopts band steel or steel plate or reinforcing bar to replace, define the dark close rib concrete structure of reinforcing bar, the weight bearing power of floor can be increased substantially, improve the safety factor of plate body.And on the tube wall of body, be provided with at least one through transverse pipe, concrete pours in transverse pipe, concrete column can be formed in precast hollow slab, by two of precast hollow slab plate face drawknots integrally, this hollow section particularly suitable hollow section is close to arrangement, does not have to use in the precast hollow slab of concrete rib between pipe, and, transverse pipe itself can play good supporting role to hollow section, and it can be prevented to be out of shape when concreting.
Another technical scheme of the present invention is on above-mentioned basis, and described rib is reinforcing bar or the steel wire that continuous bending waviness or continuous bending become W shape.So, rib is continuous bending waviness or continuous bending when becoming reinforcing bar or the steel wire of W shape, and rib has good continuity, and processing technology is simple, is easy to apply.
Another technical scheme of the present invention is on above-mentioned basis, and the connection between described rib bending part and mesh sheet is for being welded to connect.So, after being welded to connect between rib bending part and mesh sheet, rib and mesh sheet define entirety, improve the non-deformability of mesh sheet, make it not yielding in application process, be applied to after in precast hollow slab meanwhile, precast hollow slab biside plate face can be connected into entirety by rib, makes its distortion that not easily misplaces.
Another technical scheme of the present invention is on above-mentioned basis, and the opposite side bending part of described rib is provided with at least one dowel, and rib is connected into mesh sheet at bending part by described dowel.So, the opposite side bending part of rib is provided with at least one dowel, dowel is after rib is connected into mesh sheet by bending part, and rib is in same plane, has increased substantially the non-deformability of rib, makes it not yielding in application process.
Another technical scheme of the present invention is, on above-mentioned basis, to be provided with oblique pull reinforcing bar in described mesh sheet.So, be provided with oblique pull reinforcing bar in mesh sheet, the bulk strength of mesh sheet obtains reinforcement, is applied to after in precast hollow slab, and oblique pull reinforcing bar can increase substantially the shear resistance in precast hollow slab plate face, can reduce its thickness further.
Another technical scheme of the present invention is on above-mentioned basis, and described at least one end of oblique pull reinforcing bar is provided with hanging built-in fitting.So, be provided with hanging built-in fitting oblique pull is end reinforced, burying underground of suspender member in precast hollow slab can be facilitated, the load-bearing load of suspender member can be improved, make it not fragile in handling process.
Another technical scheme of the present invention is, on above-mentioned basis, described mesh sheet to be provided with locating part, and described locating part is that rib portions protrudes formation.So, rib mesh sheet is provided with locating part, described locating part is that rib portions protrudes formation, in the manufacturing process of precast hollow slab, pore-forming pipe clamp can be located in adjacent rib by locating part, can ensure that pore-forming pipe is in design attitude, thus ensure the thickness of floor and the position of rib in floor accurate, and protruding by rib portions the mode formed like this can not need to arrange locating part separately, reduces cost and technology difficulty.
Another technical scheme of the present invention is, on above-mentioned basis, described mesh sheet to be provided with locating part, and described locating part is that mesh sheet reinforcing bar part protrudes formation.So, mesh sheet is provided with locating part, described locating part is that mesh sheet reinforcing bar part protrudes formation, in the manufacturing process of precast hollow slab, rack can be arranged in precast hollow board forming die by locating part, can ensure that rack is in design attitude accurate, and, the mode protruded by mesh sheet reinforcing bar part like this can not need to arrange locating part separately, reduces cost and technology difficulty.
Another technical scheme of the present invention is on above-mentioned basis, and described mesh sheet is double-deck mesh sheet.So, when mesh sheet in rack is double-deck mesh sheet, can further improve the globality of rack, prevent its deformed damaged in installation application process.
Another technical scheme of the present invention is on above-mentioned basis, is provided with heat insulation layer in described double-deck mesh sheet.So, when being provided with heat insulation layer in double-deck mesh sheet, heat insulation layer can firmly be clamped by double-deck mesh sheet, it is prevented to be shifted in precast hollow slab casting process, fully can ensure the tight continuously of heat insulation layer, described rack is applied to after in precast hollow slab, can significantly promote its thermal and insulating performance.
Another technical scheme of the present invention is on above-mentioned basis, is provided with pipeline in described double-deck mesh sheet.So, be provided with pipeline in double-deck mesh sheet after, the pre-buried of wireway can be completed, prevent it to be shifted.
Another technical scheme of the present invention is that, on above-mentioned basis, described pipe end is provided with junction box.So, when pipe end is provided with junction box, disposablely can completes wireway pre-buried, facilitate construction application, not need secondary fluting buried pipeline, be conducive to the globality keeping precast hollow slab.
Another technical scheme of the present invention is, on above-mentioned basis, described mesh sheet to be provided with pipeline.So, after mesh sheet is provided with pipeline, the pre-buried of wireway can be completed, prevent it to be shifted.
Another technical scheme of the present invention is on above-mentioned basis, and described hollow device is be arranged on to bury core pore-forming pipe between two mesh sheet.So, described hollow device is be arranged on to bury core pore-forming pipe between two mesh sheet, hollowcore slab can be made into like this, and core pore-forming pipe will be buried be arranged between two mesh sheet, can prevent in the manufacturing process of hollowcore slab, bury core pore-forming pipe and position skew occurs, thus be difficult to the thickness of controlroof and base plate, the situation causing hollowcore slab internal construction and project organization not to conform to occurs, affects the quality of hollowcore slab.
Another technical scheme of the present invention is on above-mentioned basis, described in bury core pore-forming pipe and comprise body, described body is through hollow section, and the tube wall of body is provided with the transverse pipe of at least one lateral direction penetrating body.So, when body is through hollow section, when hollow section is applied in precast hollow slab, its end is through, if also arrange support to loose core mould in hollow section, after pouring concrete completes, mould of support being loosed core is extracted out, so, significantly can reduce pore-forming tube wall thickness, also pore-forming pipe can not be caused to be out of shape, and then the situation that precast hollow slab hole wall can not be caused uneven occur.Similarly, if when hollow section tube wall rigidity is enough to support pouring concrete load, does not then need to arrange support and to loose core mould, can reach the uniform effect of hollowcore slab hole wall yet.The tube wall of body is provided with the transverse pipe that at least one is through, concrete pours in transverse pipe, concrete column can be formed in precast hollow slab, by two of precast hollow slab plate face drawknots integrally, this hollow section particularly suitable hollow section is close to arrangement, does not have to use in the precast hollow slab of concrete rib between pipe, and, transverse pipe itself can play good supporting role to hollow section, and it can be prevented to be out of shape when concreting.
Another technical scheme of the present invention is, on above-mentioned basis, outer surface of tube body to be provided with at least one fin, and described fin is longitudinally arranged at tube surfaces.So, described fin is longitudinally arranged at tube surfaces, in the process making precast hollow slab, fin and precast hollow board forming die die face support and combine, then can play supporting and location effect, the situation preventing hollow section from causing hollowcore slab internal construction and project organization not to conform at mould internal shift occurs, fully ensure that the quality of precast hollow slab, if and the position of fin is arranged on two pore-forming pipes, and when being close to arranged adjacent, how empty rib can also be formed in precast hollow slab, be conducive to reducing concrete heat bridge, improve the heat-proof quality of precast hollow slab.
Another technical scheme of the present invention is on above-mentioned basis, and described body cross section is rectangle.So, when body cross section is rectangle, described pore-forming pipe is applied to after in precast hollow slab, correspondingly can form through rectangle duct in hollowcore slab inside, cross section is the hollow rate that the pore-forming pipe of rectangle can increase substantially precast hollow slab, saves material, reduces precast hollow slab own wt.
Another technical scheme of the present invention is, on above-mentioned basis, described tube wall to be provided with at least one transverse concave groove.So, when tube wall being provided with at least one transverse concave groove, transverse concave groove improves the side direction bearing capacity of pore-forming pipe, make it not yielding in application process, simultaneously, cast-in-situ concrete also can form concrete structure in transverse concave groove, improves the bonding strength between precast hollow slab two plate faces, prevents its dislocation in lifting and installation process from damaging.
Another technical scheme of the present invention is, on above-mentioned basis, described body to be provided with at least one align member.So, when body being provided with at least one align member, described pore-forming pipe is in application process, align member can be supported on precast hollow board forming die, pore-forming pipe can be fixed in precast hollow board forming die, prevent it from swinging, fully can ensure that the thickness of precast hollow slab both sides plate body is consistent with design thickness.
Another technical scheme of the present invention is, on above-mentioned basis, described fin to be provided with positioner.So, when fin is provided with positioner, in application process, positioner on described fin can coordinate screens to fix with reinforcing bar or steel wire, fin can play longitudinal bracing positioning action, the situation preventing hollow section from causing hollowcore slab internal construction and project organization not to conform at mould internal shift occurs, fully ensure that the quality of precast hollow slab.
Another technical scheme of the present invention is on above-mentioned basis, and described positioner is groove.So, when positioner is groove, in application process, the situation that positioner can coordinate screens fixedly to prevent hollow section from causing hollowcore slab internal construction and project organization not to conform at mould internal shift with reinforcing bar or steel wire very easily occurs, fully ensure that the quality of precast hollow slab.
Another technical scheme of the present invention is on above-mentioned basis, and described groove is into the large groove of young endoporus.So, when groove is into the large groove of young endoporus, in application process, reinforcing bar or steel wire snap in after in groove, in the process of building cast-in-situ concrete, enter the effect that the large groove of young endoporus can play snap close, thus make reinforcing bar or steel wire be not easy to eject.
Another technical scheme of the present invention is on above-mentioned basis, and at least one end of described body is provided with enclosing cover, and body is closed into blind pipe or closed hollow pipe by described enclosing cover.So, when at least one end of body is provided with enclosing cover, body is closed into blind pipe or closed hollow pipe by described enclosing cover, described pore-forming pipe is applied to after in precast hollow slab, as end also concreting, then can form semiclosed or totally enclosed precast hollow slab, globality, the sound-insulating heat-insulation property of this precast hollow slab are good, in particular improve the bonding strength between precast hollow slab two plate faces, prevent its dislocation in lifting and installation process from damaging.
Another technical scheme of the present invention is on above-mentioned basis, and described enclosing cover end is provided with keeper, and described keeper is arranged at enclosing cover edge or cover bottom portion.So, when enclosing cover end is provided with keeper, described keeper is arranged at enclosing cover edge or cover bottom portion, in application process, pore-forming pipe can be fixed in the moulding form of precast hollow slab by keeper, the situation preventing pore-forming tube end from causing hollowcore slab internal construction and project organization not to conform at mould internal shift occurs, fully ensure that the quality of precast hollow slab.
Another technical scheme of the present invention is on above-mentioned basis, and described fin is arranged on two relative faces of body.So, fin is arranged on two relative faces of body, in application process, fin can be arranged at the reinforcing bar of its both sides or steel wire or precast hollow board forming die supporting and location, and after multiple pore-forming pipe arrangement, fin cooperatively interacts, and can play shaping effect of blocking, prevent the concrete of precast hollow slab both sides completely through, serve the effect reducing concrete heat bridge.
Another technical scheme of the present invention is on above-mentioned basis, and described fin is arranged on four faces of body.So, when on four faces that fin is arranged at body, fin can be arranged at the reinforcing bar of its both sides or steel wire or precast hollow board forming die supporting and location, simultaneously, after multiple pore-forming pipe arrangement, fin cooperatively interacts, and can play and block shaping effect, prevent the concrete of precast hollow slab both sides completely through, serve the effect reducing concrete heat bridge.
Another technical scheme of the present invention is on above-mentioned basis, and the material of described body is plastics, the fin global formation that described body and external surface thereof are arranged.So, when the material of body is plastics, during the fin global formation that described body and external surface thereof are arranged, pore-forming pipe is manufactured convenient and simple, and pipe thickness can strictly control, and, bonding strength between fin and body is good, is not easy damage and comes off, and fully ensure that the quality of pore-forming pipe.
Another technical scheme of the present invention is on above-mentioned basis, and described fin shifts to install on relative two faces of body.So, when fin shifts to install on relative two faces of body, in application process, after multiple pore-forming pipe arrangement, the fin shifted to install complements each other to form and blocks, and can reduce producting process difficulty, is conducive to reducing costs, raises the efficiency.
Another technical scheme of the present invention is, on above-mentioned basis, described body to be also provided with striker plate.So, can go out to be formed stiffener at body striker plate or strengthen fin, improve the quality of pore-forming pipe further.
Another technical scheme of the present invention is on above-mentioned basis, is provided with multiplely to bury core pore-forming pipe between described two mesh sheet, described in bury docked by fin between core pore-forming pipe spacing.So, bury docked by fin between core pore-forming pipe spacing, in the process making precast hollow slab, fin can play supporting and location effect, the situation preventing pore-forming pipe from causing hollowcore slab internal construction and project organization not to conform at mould internal shift occurs, fully ensure that the quality of precast hollow slab, if the fin between adjacent pore-forming pipe is continuous print and is close to mutually or has part superimposed, be then pourablely made into the apleuria rack hollowcore slab only connected by skeleton between two plate bodys.
Another technical scheme of the present invention is on above-mentioned basis, and described top layer and/or bottom are layer of concrete.So, when top layer and/or bottom are layer of concrete, according to the structural strength situation of precast hollow slab, can selective gist scope flexibly, as used as side fascia, heat-insulation wall plate, inner partition plate or floor.
Another technical scheme of the present invention is on above-mentioned basis, described top layer and bottom separated or buried concrete through between core pore-forming pipe be communicated with by adjacent.So, bury concrete through between core pore-forming pipe be communicated with when the separated of top layer and bottom or by adjacent, concrete heat bridge between the plate body of precast hollow slab both sides is reduced or is cut off, and improves the thermal and insulating performance of precast hollow slab, is specially adapted to do side fascia and uses.
Another technical scheme of the present invention is, on above-mentioned basis, to be provided with stiffener in described top layer and/or bottom.So, be provided with stiffener in top layer and/or bottom after, the local strength of precast hollow slab is greatly improved, choice for use mode can be carried out according to its mechanical property, as the plate face being provided with reinforcing rib being placed in bottom, then can be used as floor to use, significantly can reduce the amount of reinforcement of floor.
Another technical scheme of the present invention is on above-mentioned basis, and the cross section of described transverse pipe is rectangle or circle.So, the cross section of transverse pipe is rectangle or circle, easy to process like this, and meanwhile, concrete pours in transverse pipe, can form rectangle or circular concrete column, can play good supporting role to pore-forming pipe in precast hollow slab.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.
Fig. 1 is special rack cross section structure figure in the precast hollow slab that relates to of a kind of embodiment of this programme;
Fig. 2 is special rack cross section structure figure in the precast hollow slab that relates to of the another kind of embodiment of this programme;
Fig. 3-Fig. 9, in the precast hollow slab that relates to of the another several embodiment of this programme, special rack is provided with the structure chart burying core pore-forming pipe;
Figure 10 is special rack and the disposed thereon assembling schematic diagram burying core pore-forming pipe in the precast hollow slab that relates to of a kind of embodiment of this programme;
Figure 11 is the structural representation of the precast hollow slab that a kind of embodiment of this programme relates to;
Figure 12-Figure 14 is the structural representation of the precast hollow slab that the another several embodiment of this programme relates to.
In figure:
1 body 2 fin 20 positioner 3 transverse concave groove
4 enclosing cover 40 keeper 5 align member 10 mesh sheet
11 rib 12 oblique pull reinforcing bar 100 guiding gutter 110 top layers
120 bottom 130 stiffener 7 transverse pipe 9 packing materials
Detailed description of the invention
Describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.In addition, those skilled in the art, according to the description of presents, can carry out respective combination to the feature in embodiment in presents and in different embodiment.
The embodiment of the present invention is as follows, refer to Fig. 3 to Figure 14, a kind of precast hollow slab, comprise top layer 110 and bottom 120, and the hollow device be arranged between top layer 110 and bottom 120, described precast hollow slab also comprises the special rack of precast hollow slab, the special rack of described precast hollow slab comprises the mesh sheet 10 that two relative spacings are arranged, at least one and the vertically disposed rib 11 of mesh sheet is provided with between two mesh sheet 10, the tube wall of described hollow device is provided with at least one through transverse pipe 7, described hollow device is arranged between described two mesh sheet 10.So, because being provided with hollow device between the top layer and bottom of precast hollow slab, when hollow device is through hollow section, be embedded in precast hollow slab as non-core-drawing pore-creating component, precast hollow slab can in precast hollow board forming die one-time cast-forming, when hollow section is applied in precast hollow slab, its end is through, if also arrange support to loose core mould in hollow section, after pouring concrete completes, mould of support being loosed core is extracted out, can significantly reduce hollow section pipe thickness, also hollow section can not be caused to be out of shape, and then, the situation that precast hollow slab hole wall can not be caused uneven occurs, similarly, if when hollow section tube wall rigidity is enough to support pouring concrete load, then do not need to arrange support to loose core mould, also the uniform effect of hollowcore slab hole wall can be reached, in addition, after being provided with at least one and the vertically disposed rib of mesh sheet between two mesh sheet, rib improves the globality of rack, make it when being mounted in precast hollow board forming die, not easily swinging deformation, described rack is applied to after in precast hollow slab, because it is two-sided mesh sheet rack, precast hollow slab biside plate volume property is even, be especially suitable for use as exterior wall, as adopted the mesh sheet of asymmetric diameter, then can according to mechanical property, thick gusset face is placed in bottom, thus can be used as floor use, as rib adopts band steel or steel plate or reinforcing bar to replace, define the dark close rib concrete structure of reinforcing bar, the weight bearing power of floor can be increased substantially, improve the safety factor of plate body, and on the tube wall of body, be provided with at least one through transverse pipe 7, concrete pours in transverse pipe 7, concrete column can be formed in precast hollow slab, by two of precast hollow slab plate face drawknots integrally, this hollow section particularly suitable hollow section is close to arrangement, do not have between pipe to use in the precast hollow slab of concrete rib, and, transverse pipe 7 itself can play good supporting role to hollow section, it can be prevented to be out of shape when concreting.
On the basis of above-described embodiment, in another embodiment of the present invention, as depicted in figs. 1 and 2, described rib 11 can be reinforcing bar or the steel wire that continuous bending waviness or continuous bending become W shape.So, rib 11 is continuous bending waviness or continuous bending when becoming reinforcing bar or the steel wire of W shape, and rib has good continuity, and processing technology is simple, is easy to apply.
On the basis of above-described embodiment, in another embodiment of the present invention, the connection between the bending part of described rib 11 and mesh sheet 10 can adopt and be welded to connect.So, after being welded to connect between rib 11 bending part and mesh sheet 10, rib 11 and mesh sheet 10 define entirety, improve the non-deformability of mesh sheet, make it not yielding in application process, be applied to after in precast hollow slab meanwhile, precast hollow slab biside plate face can be connected into entirety by rib 11, makes its distortion that not easily misplaces.
On the basis of above-described embodiment, in another embodiment of the present invention, the opposite side bending part of described rib 11 can be provided with at least one dowel, and rib 11 is connected into mesh sheet 10 at bending part by described dowel.So, the opposite side bending part of rib 11 is provided with at least one dowel, dowel is after rib 11 is connected into mesh sheet 10 by bending part, and rib is in same plane, has increased substantially the non-deformability of rib, makes it not yielding in application process.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 2, oblique pull reinforcing bar 12 can be provided with in described mesh sheet 10.So, be provided with oblique pull reinforcing bar 12 in mesh sheet 10, the bulk strength of mesh sheet obtains reinforcement, is applied to after in precast hollow slab, and oblique pull reinforcing bar 12 can increase substantially the shear resistance in precast hollow slab plate face, can reduce its thickness further.
On the basis of above-described embodiment, in another embodiment of the present invention, described at least one end of oblique pull reinforcing bar 12 can be provided with hanging built-in fitting.So, oblique pull reinforcing bar 12 end is provided with hanging built-in fitting, burying underground of suspender member in precast hollow slab can be facilitated, the load-bearing load of suspender member can be improved, make it not fragile in handling process.
On the basis of above-described embodiment, in another embodiment of the present invention, described mesh sheet 10 can also be provided with locating part, described locating part can be that rib 11 part protrudes formation.So, rib mesh sheet 10 is provided with locating part, described locating part is that rib 11 part protrudes formation, in the manufacturing process of precast hollow slab, pore-forming pipe clamp can be located in adjacent rib by locating part, can ensure that pore-forming pipe is in design attitude, thus ensure the thickness of floor and the position of rib 11 in floor accurate, and protruding by rib 11 part the mode formed like this can not need to arrange locating part separately, reduces cost and technology difficulty.
On the basis of above-described embodiment, in another embodiment of the present invention, described mesh sheet 10 is provided with locating part, described locating part can be that mesh sheet reinforcing bar part protrudes formation.So, mesh sheet 10 is provided with locating part, described locating part is that mesh sheet reinforcing bar part protrudes formation, in the manufacturing process of precast hollow slab, rack can be arranged in precast hollow board forming die by locating part, can ensure that rack is in design attitude accurate, and, the mode protruded by mesh sheet reinforcing bar part like this can not need to arrange locating part separately, reduces cost and technology difficulty.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 2, described mesh sheet 10 can be Double-level Reticulated sheet.So, when mesh sheet in rack 10 is double-deck mesh sheet, can further improve the globality of rack, prevent its deformed damaged in installation application process.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 2, heat insulation layer can be provided with in described double-deck mesh sheet.So, when being provided with heat insulation layer in double-deck mesh sheet, heat insulation layer can firmly be clamped by double-deck mesh sheet, it is prevented to be shifted in precast hollow slab casting process, fully can ensure the tight continuously of heat insulation layer, described rack is applied to after in precast hollow slab, can significantly promote its thermal and insulating performance.
On the basis of above-described embodiment, in another embodiment of the present invention, in described double-deck mesh sheet, pipeline can be provided with.So, be provided with pipeline in double-deck mesh sheet after, the pre-buried of wireway can be completed, prevent it to be shifted.
On the basis of above-described embodiment, in another embodiment of the present invention, described pipe end can be provided with junction box.So, when pipe end is provided with junction box, disposablely can completes wireway pre-buried, facilitate construction application, not need secondary fluting buried pipeline, be conducive to the globality keeping precast hollow slab.
On the basis of above-described embodiment, in another embodiment of the present invention, described mesh sheet 10 can be provided with pipeline.So, after mesh sheet 10 is provided with pipeline, the pre-buried of wireway can be completed, prevent it to be shifted.
On the basis of above-described embodiment, in another embodiment of the present invention, described hollow device is be arranged on to bury core pore-forming pipe between two mesh sheet 10, described in bury core pore-forming pipe and mesh sheet 10 interfixes.So, be provided with between two mesh sheet 10 and bury core pore-forming pipe, hollowcore slab can be made into like this, and core pore-forming pipe will be buried and mesh sheet 10 interfixes, can prevent in the manufacturing process of hollowcore slab, bury core pore-forming pipe and position skew occurs, thus be difficult to the thickness of controlroof and base plate, the situation causing hollowcore slab internal construction and project organization not to conform to occurs, affects the quality of hollowcore slab.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figures 3 to 10, described in bury core pore-forming pipe and comprise body 1, described body 1 is through hollow section, and body 1 external surface is provided with at least one fin 2.Certainly, described fin 2 also can be arranged to projection form.So, when body 1 is through hollow section, when hollow section is applied in precast hollow slab, its end is through, if also arrange support to loose core mould in hollow section, after pouring concrete completes, mould of support being loosed core is extracted out, so, significantly can reduce pore-forming tube wall thickness, also pore-forming pipe can not be caused to be out of shape, and then the situation that precast hollow slab hole wall can not be caused uneven occur.Similarly, if when hollow section tube wall rigidity is enough to support pouring concrete load, does not then need to arrange support and to loose core mould, can reach the uniform effect of hollowcore slab hole wall yet.In addition, also fin is provided with at the external surface at body, in the process making precast hollow slab, fin can play supporting and location effect, the situation preventing hollow section from causing hollowcore slab internal construction and project organization not to conform at mould internal shift occurs, fully ensure that the quality of precast hollow slab, if the position of fin is arranged on two pore-forming pipes, and when being close to arranged adjacent, how empty rib can also be formed in precast hollow slab, be conducive to reducing concrete heat bridge, improve the heat-proof quality of precast hollow slab.
On the basis of above-described embodiment, in another embodiment of the present invention, described in bury core pore-forming pipe and comprise body, described body is through hollow section, and the tube wall of body is provided with the transverse pipe 7 of at least one lateral direction penetrating body.So, the tube wall of body is provided with at least one through transverse pipe 7, concrete pours in transverse pipe 7, can form concrete column in precast hollow slab, by two of precast hollow slab plate face drawknots integrally, this hollow section particularly suitable hollow section is close to arrangement, do not have between pipe to use in the precast hollow slab of concrete rib, and transverse pipe 7 itself can play good supporting role to hollow section, and it can be prevented to be out of shape when concreting.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figures 3 to 10, described fin 2 longitudinally can be arranged at body 1 surface.So, when fin 2 longitudinal separation spread configuration is in body 1 surface, in the process making precast hollow slab, fin and precast hollow board forming die die face support and combine, then can play supporting and location effect, the situation preventing hollow section from causing hollowcore slab internal construction and project organization not to conform at mould internal shift occurs, fully ensure that the quality of precast hollow slab, if and the position of fin is arranged on two pore-forming pipes, and when being close to arranged adjacent, how empty rib can also be formed in precast hollow slab, be conducive to reducing concrete heat bridge, improve the heat-proof quality of precast hollow slab.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figures 3 to 10, described body 1 cross section can be rectangle.So, when body 1 cross section is rectangle, described pore-forming pipe is applied to after in precast hollow slab, correspondingly can form through rectangle duct in hollowcore slab inside, cross section is the hollow rate that the pore-forming pipe of rectangle can increase substantially precast hollow slab, saves material, reduces precast hollow slab own wt.Certainly, in other designs, described body 1 cross section also can be circular or ellipse or other polygons etc., and these also all belong to equivalent technologies and replace, and belong to the protection domain of this patent.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 6, described body 1 outer wall can be provided with at least one transverse concave groove 3.So, when body 1 outer wall is provided with at least one transverse concave groove 3, transverse concave groove 3 improves the side direction bearing capacity of pore-forming pipe, make it not yielding in application process, simultaneously, cast-in-situ concrete also can form concrete structure in transverse concave groove 3, improves the bonding strength between precast hollow slab two plate faces, prevents its dislocation in lifting and installation process from damaging.In addition, guiding gutter 100 can also be provided with in one end of described body 1, the hydrops between body can be discharged like this.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 4 and Figure 5, described body 1 can be provided with at least one align member 5.So, when body 1 being provided with at least one align member 5, described pore-forming pipe is in application process, align member 5 can be supported on precast hollow board forming die, pore-forming pipe can be fixed in precast hollow board forming die, prevent it from swinging, fully can ensure that the thickness of precast hollow slab both sides plate body is consistent with design thickness.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 7, described fin 2 can be provided with positioner 20.So, when fin 2 is provided with positioner 20, in application process, positioner 20 on described fin 2 can coordinate screens to fix with reinforcing bar or steel wire, fin 2 can play longitudinal bracing positioning action, the situation preventing hollow section from causing hollowcore slab internal construction and project organization not to conform at mould internal shift occurs, fully ensure that the quality of precast hollow slab.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 7, described positioner 20 can be groove.So, when positioner 20 is groove, in application process, the situation that positioner 20 can coordinate screens fixedly to prevent hollow section from causing hollowcore slab internal construction and project organization not to conform at mould internal shift with reinforcing bar or steel wire very easily occurs, fully ensure that the quality of precast hollow slab.
On the basis of above-described embodiment, in another embodiment of the present invention, described groove can be the groove that the little endoporus of entrance is large.So, when groove is into the large groove of young endoporus, in application process, reinforcing bar or steel wire snap in after in groove, in the process of building cast-in-situ concrete, enter the effect that the large groove of young endoporus can play snap close, thus make reinforcing bar or steel wire be not easy to eject.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 7, at least one end of described body 1 can be provided with enclosing cover 4, and body 1 is closed into blind pipe or closed hollow pipe by described enclosing cover 4.So, when at least one end of body 1 is provided with enclosing cover 4, body 1 is closed into blind pipe or closed hollow pipe by described enclosing cover 4, described pore-forming pipe is applied to after in precast hollow slab, as end also concreting, then can form semiclosed or totally enclosed precast hollow slab, globality, the sound-insulating heat-insulation property of this precast hollow slab are good, in particular improve the bonding strength between precast hollow slab two plate faces, prevent its dislocation in lifting and installation process from damaging.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 7, described enclosing cover 4 end can be provided with keeper 40, and described keeper 40 is arranged at bottom enclosing cover 4 edge or enclosing cover 4.So, when enclosing cover 4 end is provided with keeper 40, described keeper 40 is arranged at bottom enclosing cover 4 edge or enclosing cover 4, in application process, pore-forming pipe can be fixed in the moulding form of precast hollow slab by keeper 40, the situation preventing pore-forming tube end from causing hollowcore slab internal construction and project organization not to conform at mould internal shift occurs, fully ensure that the quality of precast hollow slab.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 3 and Figure 4, described fin 2 can be arranged on two relative faces of body 1.So, fin 2 is arranged on two relative faces of body 1, in application process, fin 2 can be arranged at the reinforcing bar of its both sides or steel wire or precast hollow board forming die supporting and location, and after multiple pore-forming pipe arrangement, fin 2 cooperatively interacts, and can play shaping effect of blocking, prevent the concrete of precast hollow slab both sides completely through, serve the effect reducing concrete heat bridge.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 9, described fin 2 can be arranged on four faces of body 1.So, when on four faces that fin 2 is arranged at body 1, fin 2 can be arranged at the reinforcing bar of its both sides or steel wire or precast hollow board forming die supporting and location, simultaneously, after multiple pore-forming pipe arrangement, fin 2 cooperatively interacts, and can play and block shaping effect, prevent the concrete of precast hollow slab both sides completely through, serve the effect reducing concrete heat bridge.
On the basis of above-described embodiment, in another embodiment of the present invention, the material of described body 1 is plastics, fin 2 global formation that described body 1 and external surface thereof are arranged.So, when the material of body 1 is plastics, during fin 2 global formation that described body 1 and external surface thereof are arranged, pore-forming pipe is manufactured convenient and simple, pipe thickness can strictly control, and the bonding strength between fin 2 and body 1 is good, be not easy damage to come off, fully ensure that the quality of pore-forming pipe.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in figs. 5 and 9, described fin 2 shifts to install on relative two faces of body 1.So, when fin 2 shifts to install on relative two faces of body 1, in application process, after multiple pore-forming pipe arrangement, the fin 2 shifted to install complements each other to form and blocks, and can reduce producting process difficulty, is conducive to reducing costs, raises the efficiency.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 11 to 14, be provided with between described two mesh sheet 10 and multiplely bury core pore-forming pipe, described in bury and dock spacing by fin 2 between core pore-forming pipe.So, bury docked by fin between core pore-forming pipe spacing, in the process making precast hollow slab, fin can play supporting and location effect, the situation preventing pore-forming pipe from causing hollowcore slab internal construction and project organization not to conform at mould internal shift occurs, fully ensure that the quality of precast hollow slab, if the fin between adjacent pore-forming pipe is continuous print and is close to mutually or has part superimposed, be then pourablely made into the apleuria rack hollowcore slab only connected by skeleton between two plate bodys.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 11 to 14, described top layer 110 and/or bottom 120 can be layer of concrete.So, when top layer 110 and/or bottom 120 are layer of concrete, according to the structural strength situation of precast hollow slab, can selective gist scope flexibly, as used as side fascia, heat-insulation wall plate, inner partition plate or floor.
On the basis of above-described embodiment, in another embodiment of the present invention, as illustrated in figures 11 and 13, the separated setting of described top layer 110 and bottom 120.Or as shown in figures 12 and 14, between described top layer 110 and bottom 120, bury concrete connection through between core pore-forming pipe by adjacent.So, bury concrete through between core pore-forming pipe be communicated with when the separated of top layer 110 and bottom 120 or by adjacent, concrete heat bridge between the plate body of precast hollow slab both sides is reduced or is cut off, and improves the thermal and insulating performance of precast hollow slab, is specially adapted to do side fascia and uses.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in figures 12 and 14, stiffener 130 is provided with in described top layer 110 and/or bottom 120.So, be provided with stiffener 130 in top layer 110 and/or bottom 120 after, the local strength of precast hollow slab is greatly improved, choice for use mode can be carried out according to its mechanical property, as the plate face being provided with reinforcing rib being placed in bottom, then can be used as floor to use, significantly can reduce the amount of reinforcement of floor.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 8, in the inner chamber of body local or be all provided with packing material 9, described packing material 9 can be fire proofing material, heat insulating material and/or sound insulation materials.Fireproof performance, insulation newly energy and/or sound insulation value that described precast hollow slab buries core pore-forming pipe can be improved like this, thus improve the total quality of precast hollow slab.And precast hollow slab can be buried the inner all fillings of core pore-forming pipe by described packing material 9, or carry out local filling.In addition, also can bury in core pore-forming pipe at precast hollow slab and fill two or more different packing material 9, can distribute by the structure such as levels, inside and outside layer.
On the basis of above-described embodiment, in another embodiment of the present invention, the cross section of described transverse pipe 7 is rectangle or circle.So, the cross section of transverse pipe 7 is rectangle or circle, easy to process like this, and meanwhile, concrete pours in transverse pipe 7, can form rectangle or circular concrete column, can play good supporting role to pore-forming pipe in precast hollow slab.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a precast hollow slab, comprise top layer and bottom, and the hollow device be arranged between top layer and bottom, it is characterized in that, described precast hollow slab also comprises the special rack of precast hollow slab, and the special rack of described precast hollow slab comprises the mesh sheet that two relative spacings are arranged, and is provided with at least one and the vertically disposed rib of mesh sheet between two mesh sheet, the tube wall of described hollow device is provided with the transverse pipe that at least one is through, described hollow device is arranged between described two mesh sheet.
2. precast hollow slab according to claim 1, is characterized in that, described rib is reinforcing bar or the steel wire that continuous bending waviness or continuous bending become W shape.
3. precast hollow slab according to claim 2, is characterized in that, the connection between the side bending part of described rib and mesh sheet is for being welded to connect.
4. precast hollow slab according to claim 3, is characterized in that, the opposite side bending part of described rib is provided with at least one dowel, and rib is connected into mesh sheet at bending part by described dowel.
5. the precast hollow slab according to claim arbitrary in Claims 1-4, is characterized in that, is provided with oblique pull reinforcing bar in described mesh sheet.
6. precast hollow slab according to claim 5, is characterized in that, described at least one end of oblique pull reinforcing bar is provided with hanging built-in fitting.
7. the precast hollow slab according to claim arbitrary in Claims 1-4, is characterized in that, described mesh sheet is provided with locating part, and described locating part is that rib portions protrudes formation.
8. the precast hollow slab according to claim arbitrary in Claims 1-4, is characterized in that, described mesh sheet is provided with locating part, and described locating part is that mesh sheet reinforcing bar part protrudes formation.
9. the precast hollow slab according to claim arbitrary in Claims 1-4, is characterized in that, described mesh sheet is double-deck mesh sheet; Or be provided with heat insulation layer in described double-deck mesh sheet; Or be provided with pipeline in described double-deck mesh sheet; Or described pipe end is provided with junction box; Or described mesh sheet is provided with pipeline; Or
Described pipe end is provided with junction box.
10. precast hollow slab according to any one of claim 1 to 4, is characterized in that, described hollow device is be arranged on to bury core pore-forming pipe between two mesh sheet; Or described in bury core pore-forming pipe and comprise body, described body is through hollow section, and the tube wall of body is provided with the transverse pipe of at least one lateral direction penetrating body; Or outer surface of tube body is provided with at least one fin, described fin is longitudinally arranged at tube surfaces; Or
Described body cross section is rectangle; Or described tube wall is provided with at least one transverse concave groove; Or described body is provided with at least one align member; Or described fin is provided with positioner; Or described positioner is groove; Or described groove is into the large groove of young endoporus; Or at least one end of described body is provided with enclosing cover, body is closed into blind pipe or closed hollow pipe by described enclosing cover; Or described enclosing cover end is provided with keeper, described keeper is arranged at enclosing cover edge or cover bottom portion; Or described fin is arranged on two relative faces of body; Or described fin is arranged on four faces of body; Or the material of described body is plastics, the fin global formation that described body and external surface thereof are arranged; Or described fin shifts to install on relative two faces of body; Or described body is also provided with striker plate; Or be provided with between described two mesh sheet and multiplely bury core pore-forming pipe, described in bury docked by fin between core pore-forming pipe spacing; Or described top layer and/or bottom are layer of concrete; Or described top layer and bottom separated or bury concrete through between core pore-forming pipe be communicated with by adjacent; Or be provided with stiffener in described top layer and/or bottom; Or the cross section of described transverse pipe is rectangle or circle.
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| CN201510642482.5A CN105155770A (en) | 2015-09-30 | 2015-09-30 | Prefabricated hollow slab |
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| CN201510642482.5A CN105155770A (en) | 2015-09-30 | 2015-09-30 | Prefabricated hollow slab |
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Application publication date: 20151216 |