JP2008156934A - Lining plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lining plate having high sliding frictional resistance even if a covering material is not arranged on a surface, dispensing with maintenance-repairing work even when continuously using over a long period, and inexpensive in manufacturing cost. <P>SOLUTION: Main girders 2a and 2b are joined to both end parts in the width direction of a bottom plate 4, and end part plates 3a and 3b having its upper end part positioned above an upper end part of the main girders 2a and 2b and constituting a side surface, are joined to both end parts in the longitudinal direction of the bottom plate 4 and the main girders 2a and 2b. Form plates 8a and 8b constituting a part of the side surface along its edge, are also joined to an outside end part in the width direction of an upper surface of the main girders 2a and 2b. While, one or a plurality of ribs 5 connecting both main girders are joined to an intermediate part in the longitudinal direction of the main girders 2a and 2b, and infilling concrete 7 is filled up to an upper end part of the end part plates 3a and 3b and the form plates 8a and 8b in a space surrounded by the bottom plate 4, the main girder 2a, the main girder 2b, the form plate 8a and the form plate 8b so as to cover the upper end part of the main girders 2a and 2b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lining plate used for an application where it is necessary to take a slip prevention measure on a road surface such as an underground excavation construction site and an overhead pier, and in particular, a synthetic covering obtained by integrating steel and concrete. Concerning work boards.

  In recent years, lining boards laid at excavation points or the like as temporary road surface boards for securing traffic roads are mainly made of striped H-shaped steel. Such steel lining boards are easy to manufacture and easy to handle, and are therefore widely used in underground excavation work sites, construction piers, and the like. On the other hand, steel lining plates have the disadvantage of low slip resistance compared to concrete and asphalt, and especially when strong anti-slip measures are required, mortar with excellent slip resistance is generally used. The surface which becomes the road surface is covered with (see, for example, Patent Documents 1 and 2).

  Moreover, as a lining board other than steel, a synthetic lining board in which a precast concrete board or a steel material and concrete are combined has been developed (see, for example, Patent Documents 3 to 5). FIG. 13 is a perspective view showing a synthetic lining plate described in Patent Document 5. FIG. As shown in FIG. 13, the composite lining board 101 described in Patent Document 5 has iron main girders 102 a and 102 b joined to both sides of concrete 103. In Patent Document 5, as a structure for reinforcing the strength of the joint portion between the concrete 103 and the iron main girders 102a and 102b, a structure in which anchor reinforcing bars are laid on the concrete 103, a rib is formed on the upper or upper part of the concrete 103. A structure in which an iron plate with a ring-like bevel is arranged, a structure in which a steel frame is embedded in the center in the longitudinal direction of the concrete 103, and the like are described.

  On the other hand, in addition to strength performance, a synthetic lining board in which a steel part is covered with concrete has also been proposed in order to secure sliding friction resistance comparable to that of a general road (see Non-Patent Documents 1 and 2). In the composite lining board described in Non-Patent Document 2, four π-shaped steels are juxtaposed, and reinforcing girders having shapes similar to U-shaped ribs of steel deck are attached to both ends in the width direction. 8cm lightweight concrete is cast and steel and concrete are integrated.

JP 63-171403 A JP-A-4-50406 JP 51-136332 A JP 51-107641 A JP-A-51-115029 Tadanobu Nishibori, two others, “Strength and Mechanical Properties of Steel / Concrete Composite Coated Sheets”, Kawasaki Steel Technical Report, Kawasaki Steel Corporation, 1975, Vol. 7, No. 4, p. 74-87 Tadanobu Nishibori, two others, “Strength and mechanical properties of steel / concrete composite coating plate”, Kawasaki Steel Technical Report, Kawasaki Steel Corporation, 1979, Vol. 11, No. 4, p. 163-168

  However, the conventional techniques described above have the following problems. That is, in the conventional steel lining plates described in Patent Documents 1 and 2, a thin mortar or coating is applied to the surface as a slip prevention coating material. Since it is only laid on the surface of the plate, repeated use over a long period of time may cause peeling due to wear, or cracking or chipping may occur due to impact. For this reason, when the lining plate described in Patent Documents 1 and 2 is used continuously for a long period of time, repair is performed using a special machine at a location where the covering material is damaged, or in the case of a terrible case, the entire lining plate There is a problem that a considerable burden is placed on maintenance and repair work.

  Moreover, since the conventional synthetic lining board of patent documents 3-5 has exposed the steel material with low slip resistance to a road surface, and only gives stripes on the steel material surface as a countermeasure against slip, steel If only a slip resistance equivalent to that of the lining board can be expected, and a larger sliding resistance is required, the same measures as those for the steel lining board described above are required.

  Furthermore, although the synthetic lining board of the nonpatent literature 1 and 2 is providing the slip resistance function to the lining board main body, in order to ensure strength performance, it is for integrating steel material and concrete. There is a problem that a lot of processing is necessary. For example, in the case of the synthetic lining plate described in Non-Patent Document 1, drilling is performed for passing the horizontal rebar through the H-shaped steel, which is the main member. Machining and rebar insertion work are completely extra work, resulting in an uneconomical product with an increase in machining cost over the material reduction effect. In addition, in the synthetic lining plate described in Non-Patent Document 2, a special shape steel is used as a main member or a stiffening girder is attached to the bottom, so that a conventional steel lining plate is used. The price is higher than that with surface coating. Furthermore, the special shaped steel used as the main member in this synthetic lining board has a problem that it is not only expensive but also has poor marketability and timely material arrangement cannot be made.

  The present invention has been made in view of the above-described problems, and has a high sliding friction resistance even when a coating material is not provided on the surface, so that maintenance and repair work is unnecessary or extremely easy even when continuously used for a long period of time. And it aims at providing the lining board with low manufacturing cost.

  The lining board according to the present invention is a synthetic lining board in which steel and concrete are integrated, and a steel bottom board and a pair of steel main girders respectively joined to both ends in the width direction of the bottom board. A pair of steel end portions that are joined to both longitudinal end portions of the bottom plate and longitudinal end portions of the main girder, and whose upper end portions are located above the upper end portion of the main girder and constitute side surfaces A pair of steel mold plates fixed along the width direction edge of the main girder, the upper end portion thereof being located above the upper end portion of the main girder and constituting at least part of the side surface And one or a plurality of steel ribs interconnecting the pair of main girders, and a space filled with the bottom plate, the main girders, the end plate and the mold plate And stuffed concrete.

  As for this lining board, the reinforcing bar for crack prevention may be arrange | positioned in the said filling concrete.

  Further, the main girder may have a cross-sectional shape of, for example, an H shape, an L shape, or a C shape.

  Furthermore, the lining board of this invention can be made into rectangular shape, trapezoid shape, or triangular shape by planar view.

  According to this invention, while using general steel materials, such as H-section steel and a steel plate, it fills with the filling concrete to the upper part rather than the main girder, and also the surface which becomes a road surface is excellent in slip resistance. Since it is made of stuffed concrete, excellent slip resistance can be obtained without increasing manufacturing costs, and maintenance and repair work is unnecessary or extremely easy even when used continuously for a long period of time.

  The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings. First, the lining board which concerns on the 1st Embodiment of this invention is demonstrated. FIG. 1 is a perspective view showing a lining plate of the present embodiment, and FIG. 2 is a cross-sectional view taken along the line AA shown in FIG. As shown in FIGS. 1 and 2, the lining board 1 of this embodiment is a synthetic lining board in which steel and concrete are integrated, and is mainly provided at both ends in the width direction of a bottom plate 4 made of a steel plate or the like. The girders 2a and 2b are joined, and the end plates 3a and 3b which are made of steel plates and constitute side faces are joined to both ends of the bottom plate 4 and the main girders 2a and 2b in the longitudinal direction. Further, on the outer ends in the width direction of the upper surfaces of the main girders 2a and 2b, the form plates 8a and 8b, which are made of a steel plate or the like along the edges and constitute side surfaces together with the main girders 2a and 2b, are joined. The both ends in the longitudinal direction of the mold plates 8a and 8b are joined to the end plates 3a and 3b, respectively. Furthermore, the rib 5 which consists of a steel plate etc. and connects both main girders is joined to the longitudinal direction intermediate part of the main girders 2a and 2b, and the lower end part of this rib 5 is joined to the bottom plate 4. The end plates 3a, 3b are covered so that the upper ends of the main girders 2a, 2b are covered in the space surrounded by the bottom plate 4, the main girders 2a, the main girders 2b, the mold plate 8a, and the form plate 8b. And the filling concrete 7 is filled to the upper end part of the formwork plates 8a and 8b. In addition, each member is joined by welding the contact part by methods, such as fillet welding.

  The main girders 2a and 2b, which are the main structural members of the lining board 1 of the present embodiment, are main strength members of the main body, and also serve to prevent slippage of the concrete by the overhanging portion and to ensure the integration. Therefore, it is necessary to use a steel material having a flange, that is, an inwardly projecting shape, at least on the bottom surface side of the main body. Therefore, in the present embodiment, steel materials (H-shaped steel) having an H shape are used as the main girders 2a and 2b. Then, the bottom plate 4 is fillet welded to the inner end in the width direction of the lower flange of the H-shaped steel constituting the main girders 2a, 2b, and the mold plate 8a, 8b is connected to the outer end in the width direction of the upper flange. Welding meat. Further, at both ends in the longitudinal direction of the main girders 2a and 2b, at least the upper side of the lower flange of the H-shaped steel constituting the main girders 2a and 2b and the end plates 3a and 3b are fillet welded. At that time, in order to reliably prevent the leakage of the concrete, it is desirable that the H-shaped steel web and the lower side of the upper flange be welded to the fillet. When the main girders 2a, 2b and the bottom plate 4, the main girders 2a, 2b and the mold plate 8a, 8b, or the main girders 2a, 2b and the end plates 3a, 3b are fillet welded, the inner surface of the lining plate It is desirable to weld the sides, but if the work is difficult, the outer side of the lining plate may be fillet welded.

  In addition, the bottom plate 4 in the present embodiment is a member that connects the main girders 2a and 2b, functions as a mold member when filling the filling concrete 7, and further, the main girders 2a and 2b and the end portions. Since the joint between the plates 3a and 3b is subjected to water-stop welding by fillet welding, it also has a water-stop function for preventing water leakage from the bottom surface of the main body.

  On the other hand, the end plates 3a, 3b and the mold plates 8a, 8b that form the side surfaces of the lining plate 1 and function as mold members are made of rectangular steel plates and are joined to the main girders 2a, 2b and the bottom plate 4. The positions of the upper ends of the end plates 3a and 3b in the formed state and the positions of the upper ends of the mold plates 8a and 8b in the state joined to the main girders 2a and 2b are the same height. The width is set to. For this reason, the upper ends of the end plates 3a and 3b are positioned higher than the upper ends of the main girders 2a and 2b by the width of the mold plates 8a and 8b. Further, the formwork plates 8a and 8b are raising members for filling the filling concrete 7 further above the upper surfaces of the main girders 2a and 2b, and the length thereof is the same as the length of the main girders 2a and 2b. It is equivalent and is fixed to the upper flange upper surface of the main girders 2a and 2b by spot welding.

  Moreover, the rib 5 which connects the main beam 2a and the main beam 2b is a member provided for the purpose of maintaining the shape of the lining plate 1. The height is not particularly limited, and the main girders 2a, 2b are not folded or twisted during construction and use, and the quality of the concrete 7 and the corrosion resistance of the ribs 5 are taken into consideration. What is necessary is just the height in which the seven layers of concrete of the thickness which can ensure corrosion resistance on the top are formed. Specifically, it is desirable that the upper end portion of the rib 5 is located in the vicinity of ½ of the height of the main girders 2a and 2b. Further, at the lower ends of the ribs 5 on the side of the main girders 2a and 2b, notches larger than the thickness of the lower flanges of the main girders 2a and 2b are formed as air holes 5a for improving the filling property of the filling concrete 7. Is provided. Specifically, the air hole 5a has a height from the bottom plate 4 higher than the height from the bottom plate 4 to the upper surface of the lower flanges of the main girders 2a and 2b by at least the maximum aggregate dimension of the filling concrete 7, The width has a size of about 1/2 of the flange width of the main girders 2a and 2b. The rib 5 is attached to the joint portion with the main girders 2a and 2b by fillet welding at the web portion in order to prevent lateral opening at the time of loading, but the joint portion with the bottom plate 4 is positioned. Fixed spot welding may be used.

  Next, the manufacturing method of the lining board 1 of this embodiment comprised as mentioned above is demonstrated. When manufacturing the lining board 1 of this embodiment, the main girders 2a and 2b are constructed first. At that time, when using the shape steel, it is only necessary to cut it into a predetermined dimension. On the other hand, when a built-up material is used, a plate (steel plate) cut to a predetermined size is assembled into a predetermined shape, subjected to spot welding at several points as a temporary attachment, and then subjected to main welding by fillet welding. . Next, the main girders 2a and 2b are arranged at a predetermined interval, and the end plates 3a and 3b, the bottom plate 4, the rib 5 and the formwork plates 8a and 8b are tack-welded to the main plates 2a and 2b, followed by main welding. To do. At this time, the lining plate 1 may bend and warp due to thermal strain caused by welding. In this case, thermal correction or cutting to the end plates 3a and 3b and the mold plates 8a and 8b is performed. By performing the processing, a predetermined dimensional accuracy can be ensured.

  Thereafter, the inside concrete 7 is filled into a space surrounded by the bottom plate 4, the main beam 2a, the main beam 2b, the formwork plate 8a, and the formwork plate 8b. In that case, since each member mentioned above functions as a formwork, a special formwork and jig | tool are unnecessary and can fill the main body with the filling concrete 7 as it is. Moreover, in order to ensure the flatness of the surface of the lining board 1, the surface of the filling concrete 7 is ironed.

  Next, the usage method of the lining board 1 of this embodiment is demonstrated. 3 and 4 are diagrams schematically showing a method for installing the lining plate of the present embodiment. Although the lining board 1 of this embodiment is usually placed directly on the gantry in the state shown in FIG. 1, the lining board 1 is installed on the receiving beam 11 as shown in FIGS. 3 and 4. You can also. For example, as shown in FIG. 3, when the stopper 10 composed of a steel plate or L-shaped steel is used, the stopper 10 is fixedly installed on the bottom surface of the lining plate 1 by fillet welding. In addition, as shown in FIG. 4, when using a steel fastening clip 12 having an L shape instead of the stopper 10, similarly to the stopper 10 described above, at the four locations on the bottom surface of the lining plate 1, The fastening clip 12 is fixedly installed by fillet welding. The difference between the method using the stopper 10 and the method using the fastening clip 12 is that the stopper 10 is merely in contact with the receiving beam 11, but the fastening clip 12 sandwiches the receiving beam 11. Since it attaches so that it may squeeze, it is the point which can fix the covering body 1 to the receiving beam 11 by fastening the clip 12 with a volt | bolt etc.

  Further, as shown in FIG. 3 and FIG. 4, a shock absorber 14 such as a rubber pad is attached to the bottom surface of the lining plate 1, and the shock absorber 11 is installed on the receiving girder 11 through the shock absorber 14. Can be reduced.

  As described above, in the lining plate 1 of the present embodiment, since a general steel material such as an H-shaped steel and a steel plate is used, the current steel lining plate or more can be obtained without increasing the workability of the steel material. It can be set as the synthetic lining board which has the intensity | strength performance of. Thereby, the lining board structure economically superior to the conventional product can be realized. In addition, filling concrete 7 is filled above the main girders 2a, 2b, and the road surface is made of concrete that has better slip resistance than striped H steel. Therefore, the material cost and the number of processes can be reduced. Furthermore, because the concrete that forms the road surface and the steel material that is the main structural member are integrated, compared to the conventional lining plate that was formed by bonding mortar or paint with an adhesive to form the road surface Therefore, there is little peeling and chipping due to repeated use, and excellent durability can be ensured.

  In addition, in this embodiment, although the lining board which uses H-section steel for the main girders 2a and 2b was described, this invention is not limited to this. 5 and 6 are cross-sectional views showing a lining plate according to a modification of the present embodiment, and correspond to the cross-sectional view taken along the line AA shown in FIG. Specifically, the main girders 2a and 2b may be any steel material with a flange projecting toward the inside. For example, in addition to the H-shaped steel, a C-shaped steel as shown in FIG. Even if such L-shaped steel is used, the same effect as the lining plate 1 of the present embodiment can be obtained.

  Moreover, in the lining board 1 of this embodiment, although the formwork plates 8a and 8b are being fixed to the upper surface of the main girders 2a and 2b, respectively, this invention is not limited to this, The main girders 2a, What is necessary is just to function as a raising member for filling the filling concrete 7 to the upper side rather than 2b. FIG. 7 is a cross-sectional view showing a lining plate according to another modification of the present embodiment, and corresponds to a cross-sectional view taken along line AA shown in FIG. Specifically, as shown in FIG. 7, when the main girders 2a and 2b are made of H-shaped steel, the mold plates 9a and 9b can be joined to the outer side surfaces of the main girders 2a and 2b. However, in this case, when the main girders 2a and 2b and the mold plate 9a and 9b are joined, the upper flange upper surface of the main girders 2a and 2b is used to prevent the mold plates 9a and 9b from dropping off due to welding deterioration. It is desirable to weld fillet.

  Furthermore, the lining board 1 of the present embodiment has an adhesion strength between the main girders 2a and 2b and the filling concrete 7 by fixing the dowel bars 13 and the like to the projecting portions of the main girders 2a and 2b, that is, flanges. Can be further enhanced. FIG. 8 is a perspective view showing a structure in which the gibber bars 13 are provided on the lower flanges of the main girders 2a and 2b, and FIG. 9 is a sectional view thereof. As shown in FIGS. 8 and 9, when the main girders 2 a and 2 b are made of H-shaped steel, for example, a plurality of dowel bars 13 can be fixed to the lower flange with a predetermined interval. Thereby, the adhesion strength between the main girders 2a and 2b and the filling concrete 7 is reinforced.

  Furthermore, in the lining plate 1 of the present embodiment, the rectangular air holes 5a are formed in the ribs 5. However, the present invention is not limited to this, and the shape of the air holes can be set as appropriate. For example, a fan-shaped air hole having an area equivalent to the rectangular air hole 5a as shown in FIG. 2 may be used.

  Furthermore, in the lining board 1 of the present embodiment, lifting holes can be provided at the four corners of the upper surface of the lining board 1 as necessary.

  Furthermore, the shape of a general lining board is a rectangular shape in plan view as shown in FIG. 1, but the present invention is not limited to this, and can be appropriately set according to the road alignment. Is possible. FIG. 10 is a perspective view showing a lining plate of a fourth modified example of the present embodiment. For example, like the lining plate 21 shown in FIG. 10, it is possible to provide a trapezoidal or triangular lining plate in plan view by adjusting the position where the main girders 2a and 2b are arranged. Thereby, when the road is curved, the dead space can be reduced, so that the construction cost can be reduced.

  In the lining board which used the conventional striped H-shaped steel as the main member, in order to make the lining board in line with the road alignment, the case where a rectangular lining board is laid and the necessary alignment is secured, There are two types of cases, that is, when processing atypical shapes by processing, but the former is uneconomical because the dead space to secure the necessary alignment becomes large when the road is curved, etc., the latter is a mass-produced product Unlike a certain rectangular lining plate, it is off-line production, so it is not only reasonably expensive compared to a rectangular lining plate, but also the cutting direction of the striped H-shaped steel, which is the main member, is limited and not always reasonable. In some cases, a typical shape could not be secured. On the other hand, the lining board of this embodiment can cope with various road alignments only by changing the arrangement angle of the main girder and the like and changing the shape of the bottom board. In particular, when the road alignment changes during construction, it is advantageous in terms of ease of manufacture and cost reduction over the above-described conventional technology.

  Next, the lining board which concerns on the 2nd Embodiment of this invention is demonstrated. FIG. 11 is a perspective view showing the lining plate of the present embodiment, and FIG. 12 is a cross-sectional view taken along line BB shown in FIG. As shown in FIG.11 and FIG.12, the lining board 31 of this embodiment arrange | positions the crack dispersion | distribution rebar 6 in the filling concrete 7, and the structure other than that is 1st implementation mentioned above. It is the same as the lining board of the form. As the crack dispersion rebar 6 used in the lining plate 31, a general crack prevention rebar can be used, but it has an area equivalent to the surface area of the filling concrete 7 as a whole, and the rebar is long. It is desirable that they are assembled in a mesh shape so as to intersect the direction and the width direction at right angles. Moreover, you may install the crack dispersion | distribution reinforcement 6 directly on the upper flange upper surface of the main girders 2a and 2b, for example, as shown in FIG.

  In the lining board 31 of the present embodiment, since the crack-dispersed reinforcing bars 6 are arranged in the filling concrete 7, the width of the cracks generated on the road surface during use can be dispersed to a small extent. The durability can be further improved as compared with the lining plate 1 of the embodiment. The effects of the lining plate 31 of the present embodiment other than those described above are the same as those of the lining plate 1 of the first embodiment described above.

It is a perspective view which shows the lining board of the 1st Embodiment of this invention. It is sectional drawing by the AA line shown in FIG. It is a figure which shows typically the installation method of the lining board of the 1st Embodiment of this invention. It is a figure which shows typically the other installation method of the lining board of the 1st Embodiment of this invention. It is sectional drawing which shows the lining board of the 1st modification of the 1st Embodiment of this invention, and is equivalent to sectional drawing by the AA line shown in FIG. It is sectional drawing which shows the lining board of the 2nd modification of the 1st Embodiment of this invention, and is equivalent to sectional drawing by the AA line shown in FIG. It is sectional drawing which shows the lining board of the 3rd modification of the 1st Embodiment of this invention, and is equivalent to sectional drawing by the AA line shown in FIG. It is a perspective view which shows the structure at the time of providing the girdles on the lower flange of the main girders 2a and 2b. It is sectional drawing of the lining board shown in FIG. It is a perspective view which shows the lining board of the 4th modification of the 1st Embodiment of this invention. It is a perspective view which shows the lining board of the 2nd Embodiment of this invention. It is sectional drawing by the BB line shown in FIG. It is a perspective view which shows the synthetic | combination lining board of patent document 5.

Explanation of symbols

1, 21, 31, 101 Covering plate 2a, 2b, 102a, 102b Main girder 3a, 3b End plate 4 Bottom plate 5 Rib 5a Air hole 6 Crack dispersive rebar 7, 103 Concrete 8a, 8b, 9a, 9b Formwork plate 10 Stopper 11 Girder 12 Clip 13 Giber Muscle 14 Buffer Material

Claims (4)

It is a synthetic lining board that integrates steel and concrete,
A steel bottom plate,
A pair of steel main girders respectively joined to both ends in the width direction of the bottom plate;
A pair of steel end plates that are joined to both longitudinal end portions of the bottom plate and longitudinal end portions of the main girder, and whose upper end portions are located above the upper end portions of the main girder and constitute side surfaces When,
A pair of steel form plates fixed along the widthwise edge of the main beam, the upper end of which is located above the upper end of the main beam, and constituting at least part of the side surface;
One or more steel ribs interconnecting the pair of main girders;
Filled concrete filled in a space formed by the bottom plate, the main girder, the end plate and the formwork plate;
The lining board characterized by having.   The lining board according to claim 1, further comprising a crack preventing rebar disposed in the filling concrete.   The lining plate according to claim 1 or 2, wherein a cross-sectional shape of the main girder is an H shape, an L shape, or a C shape.   The lining board according to any one of claims 1 to 3, which is rectangular, trapezoidal, or triangular in plan view.

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