CN213740636U - Cast-in-place construction auxiliary device of continuous case roof beam cantilever of variable cross section - Google Patents

Abstract

The utility model discloses a cast-in-place construction auxiliary device of continuous case roof beam cantilever of variable cross section, including the case roof beam, case roof beam left and right sides outer wall all is provided with the hanging flower basket, and the hanging flower basket includes track pad beam, main truss, preceding entablature, preceding bottom end rail, hangs basket bottom end basket, back bottom end rail, end longeron, die block board, side form, roof and die block, improves through the mode to the cast-in-place construction of cantilever in the device for improve the efficiency of hanging flower basket construction, thereby accelerated the progress of construction, improved the efficiency of case roof beam cantilever construction.

Description

Cast-in-place construction auxiliary device of continuous case roof beam cantilever of variable cross section

Technical Field

The utility model relates to a case roof beam cantilever construction technical field specifically is a cast-in-place construction auxiliary device of continuous case roof beam cantilever of variable cross section.

Background

The box girder is one of roof beam among the bridge engineering, and current box girder cantilever need use the hanging flower basket at the in-process of construction, and the hanging flower basket needs to install the hanging flower basket on the box girder at the in-process that uses, however traditional construction method efficiency reduces, influences work efficiency, for this reason, we provide a continuous box girder cantilever cast-in-place construction auxiliary device of variable cross section.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cast-in-place construction auxiliary device of continuous case roof beam cantilever of variable cross section to solve the problem that provides in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cast-in-place construction auxiliary device of continuous case roof beam cantilever of variable cross section, includes the case roof beam, case roof beam left and right sides outer wall all is provided with the hanging flower basket, and the hanging flower basket includes track pad beam, main truss, preceding entablature, preceding bottom end rail, hangs basket bottom basket, back bottom end rail, end longeron, bed die board, side form, roof and die block.

Preferably, the main truss comprises a1 pole, a2 pole, A3 pole, a4 pole, a5 pole, J1 junction box, J2 junction box, J3 junction box and J4 junction box.

Compared with the prior art, the beneficial effects of the utility model are that: the device improves the cantilever cast-in-place construction mode, and is used for improving the construction efficiency of the hanging basket, thereby accelerating the construction progress and improving the construction efficiency of the box girder cantilever.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is the schematic view of the main truss structure of the present invention.

In the figure: 1. a box girder; 2. a main truss; 21. a1 rod; 22. a2 rod; 23. a3 rod; 24. a4 rod; 25. a5 rod; 26. junction box J1; 27. junction box J2; 28. junction box J3; 29. junction box J4; 3. a front upper cross beam; 4. a front lower cross beam; 5. a rear lower cross beam; 6. a bottom template; 7. and (4) a bottom die.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a technical scheme: a variable cross-section continuous box girder cantilever cast-in-place construction auxiliary device, please refer to fig. 1, comprising a box girder 1;

referring to fig. 1, hanging baskets are arranged on the outer walls of the left side and the right side of a box girder 1, each hanging basket comprises a track pad beam, a main truss 2, a front upper cross beam 3, a front lower cross beam 4, a hanging basket bottom basket, a rear lower cross beam 5, a bottom longitudinal beam, a bottom template 6, side molds, a top plate and a bottom template 7, when the hanging baskets are installed on the box girder 1, tracks are installed firstly, the axes of the travelling tracks of the hanging baskets are discharged, the track pad beams are installed (the track pad beams are leveled by cement mortar), the travelling tracks (the distance between two tracks in one group and the distance between two groups of tracks are accurately set to ensure the distance between the main trusses) are leveled, the center distance between the tracks is strictly controlled to be consistent with the drawing, the tracks are installed straightly, the top surfaces of the tracks are kept horizontal, the height difference of the tracks is not more than 5mm, the tracks are tightly pressed by using vertical threaded steel of the box girder 1, the vertical finish rolling steel bars are lengthened to the length capable of anchoring the tracks by using qualified connectors (the threaded steel bar connectors are connected in half and half, finally, rechecking the track gauge by using a long ruler, wherein the anchoring point of each 2 m track is not less than 2, the torque required by nut screwing is 100Kg.m, and the track pressing beam is vertical to the track;

referring to fig. 1 and 2, a main truss 2 is installed, a left buckling wheel set and a front support are installed and respectively located at appropriate positions of a rail, a temporary rear support is arranged, a main truss installation axis and a plane position are released by taking the rail as a reference, the position of a cradle front support is adjusted, an A1 rod 21, an A2 rod 22, an A3 rod 23 and a junction box body J1, J2 and J3 on a single main truss sheet are firstly assembled into a single-piece triangle on the ground, when a rear pin shaft of the A1 rod 21 and the J2 junction box 26 is installed, the single-piece main truss sheet is installed together with a left buckling wheel sling, the height of the front support at the installation position of the main truss sheet and the length of the left buckling wheel sling are noticed, (it is necessary to place the left buckling wheel sling at the center of the J2 box body during installation), the temporary rear support is arranged under the J2 box body, the triangular truss is hoisted in place, in order to ensure the stability of the single-piece triangular truss sheet, a back pressure device is installed, and a2 ton main truss is pulled on the left and right of a hoist, the left-right verticality of the main truss 2 is stabilized and adjusted, each main truss is longitudinally aligned to be level (the front-back error of each main truss 2 in the longitudinal direction is not more than 1cm), the rear anchor is pressed in time, the longitudinal stability is ensured, and the transverse 2-ton hoist is tightened, so that the longitudinal and transverse directions are stabilized;

referring to fig. 1 and 2, a transverse connection truss is installed, unequal angle steels of 14 × 9cm in length are installed on two sides of an a2 bar 22, the length of the unequal angle steels is 16cm, the transverse connection truss is hoisted by tightening bolts and connecting the a2 bar 22 on a main truss piece with the bolts, one piece of unequal angle steel is temporarily fixed (a supporting truss on the top surface of a J1 node box 26) and then hoisted, a temporary 2-ton gourd is fixed on two sides of an a2 bar, two trusses are connected into a whole by transverse connection channel steel, the contact part of upper and lower horizontal rods of the transverse connection truss and the unequal angle steel of 14 × 9cm fixed on the a2 bar 22 is fully welded, the width of a welding seam is 8mm, the transverse connection piece cannot be welded with the a2 bar 22, the truss needs to be firmly temporarily supported before being connected and formed (because the transverse connection of a hanging basket is subjected to a large horizontal force, in order to ensure safety and reliability, a pair of finish rolling threaded draw bars is arranged on a J3 node box before a bottom basket is hung on the transverse connection, ensuring the transverse stability of the main truss), assembling an A4 rod 25, an A5 rod 25 and a junction box J4 on the ground, and temporarily forming a tripod by using a 2-ton hoist to hoist the tripod onto the installed triangular truss to form a diamond-shaped main truss 2;

referring to fig. 1 and 2, a front beam is installed, the front upper beam 3 needs to be horizontally padded and welded on a temporary steel plate of a J4 junction box 29 (a transition steel plate is arranged on the top surface of the J4 junction box 29 and used for connecting the front upper beam 3), a suspender padding beam is arranged perpendicular to the front upper beam 3, and meanwhile, the position of the suspender padding beam is selected to ensure that the suspender is vertically stressed;

referring to fig. 1, a cradle bottom basket is installed, a longitudinal beam on the bottom basket is temporarily spot-welded on front and rear lower cross beams 5 on the ground below a box girder 1 to form a plane whole, the cradle bottom basket is lifted by a winch after being assembled, front and rear suspension rods of the bottom basket are penetrated after the bottom basket is lifted in place, a suspension rod is installed after the bottom basket is hung in place, a bottom template 6 is laid to form the bottom basket, the height is adjusted (the lifting weight is considered for the integral lifting of the bottom basket, the bottom basket is lifted separately when the lifting capacity is insufficient), the rear lower cross beam 5 is firstly lifted by a steel rope and a hoist, the rear lower cross beam 5 is fixed on the box girder 1 by the penetration suspension rod, the front upper cross beam 3 is installed in place and penetrates the suspension rod to be fixed on the front upper cross beam 3, the front lower cross beam 4 is lifted and is temporarily fixed by the hoist, the lower end of the hoist is connected with a front lower cross beam 4 (the hoist is screwed with the thread of the longitudinal beam), the hoist), installing a bottom template 6);

referring to fig. 1, a rear lower beam 5 is installed, a beam steel sling conversion sling is installed firstly, two connecting steel plates (provided with pin-through shaft holes) are welded on one sling between double-spliced steel sections of the beam, the conversion sling extends between the two steel plates, a sling pin shaft is inserted, a safety bolt is arranged, the hanging points of a bottom die platform (the rear lower beam 5) of a cradle are a short suspender and a long suspender, the middle short suspender is installed firstly to enable the bottom die to be attached tightly, then the long suspenders on two sides are lifted to ensure the line type of the bottom surface of the bottom plate to be attractive, the upper surface and the lower surface of the suspender of the bottom plate of a box beam 1 are leveled by iron pieces, a front lower beam 4 is lifted (the corresponding conversion sling is installed), the box beam is temporarily hung by two hoists, the installed front upper beam 3 suspender is screwed into the suspender beam sling, and the height of the front lower beam 4 is adjusted by the front suspender;

referring to fig. 1, a bottom longitudinal beam is installed, the bottom longitudinal beams are arranged one by one according to designed positions, the longitudinal beams are fixed with a front cross beam and a rear cross beam 5 in a spot welding mode, the distance between the front cross beam and the rear cross beam is ensured, the vertical stress of a suspension rod is guaranteed, a small channel steel is transversely arranged in the middle of the longitudinal beam and at the bottom of the longitudinal beam and is in spot welding with the longitudinal beam, and the transverse stability of the longitudinal beam is enhanced;

referring to fig. 1, a bottom formwork 6 is installed, the bottom formwork 6 is hung, and the bottom formwork is installed and laid flat piece by piece;

referring to fig. 1, next, installing side molds, lifting a sliding beam to the outside of a bottom mold by using a lifting device, placing the sliding beam on a lower cross beam, lifting the sliding beam to a position 30cm below a wing plate concrete by using a chain block, fixing the front end of the sliding beam on a front upper cross beam 3, installing a rolling hanger and a bearing hanger at the rear end of the sliding beam, installing the bearing hanger at the front and the rear of the rolling hanger, hanging a guide beam on concrete and a front upper cross beam 3 by using finish rolling steel, after confirming that the slide beam and the guide beam are anchored, integrally hanging a side mould on an outer slide beam (when the side mould plate is not disassembled on a No. 0 block to the ground, inserting the outer guide (slide) beam, hanging the front end of the outer guide (slide) beam on the front upper cross beam 3 by using a suspender, hanging the rear end of the outer guide (slide) beam on a box beam 1 (a hole needs to be reserved on a wing plate of the box beam 1, and the reserved position needs to be accurate), pulling the side mould plate on the slide beam to move to a hanging basket position, connecting the front end of the guide beam with the suspender, and leaving at least 10cm below a suspender nut to ensure safety);

referring to fig. 1, finally, a top plate bottom die 7 is installed, a top plate guide beam and a template are installed in the same way, the installation method of the top plate inner guide beam is the same as that of the top plate outer guide beam, the elevation and the axis of the bottom die 7 and the side die are adjusted, and the assembly of the hanging basket is completed;

referring to fig. 1 and 2, referring to fig. 1, the main girder 2 includes a1 bar 21, a2 bar 22, A3 bar 23, a4 bar 24, a5 bar 25, J1 node box 26, J2 node box 27, J3 node box 28, and J4 node box 29.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (2)

1. The utility model provides a cast-in-place construction auxiliary device of continuous case roof beam cantilever of variable cross section, includes case roof beam (1), its characterized in that: the outer wall of the left side and the right side of the box girder (1) is provided with hanging baskets, and each hanging basket comprises a rail pad beam, a main truss (2), a front upper cross beam (3), a front lower cross beam (4), a hanging basket bottom basket, a rear lower cross beam (5), a bottom longitudinal beam, a bottom template (6), side templates, a top plate and a bottom template (7).

2. The auxiliary device for cantilever cast-in-place construction of the variable cross-section continuous box girder as claimed in claim 1, is characterized in that: the main truss (2) comprises an A1 rod (21), an A2 rod (22), an A3 rod (23), an A4 rod (24), an A5 rod (25), a J1 junction box (26), a J2 junction box (27), a J3 junction box (28) and a J4 junction box (29).

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