Long cantilever bent cap combined type supporting system

Abstract

A long cantilever bent cap combined type supporting system comprises triangular bracket supporting structures arranged on the two sides of a pier body of a bridge pier, and the triangular bracket supporting structures are fixed to embedded parts on the pier body of the bridge pier. The inserting rod penetrates through a pier body front and back and supports the cross beam, and the cross beam is fixed to the triangular bracket supporting structure. Unloading blocks are arranged on the cross beam and the triangular bracket supporting structure at intervals, distribution longitudinal beams are placed on the unloading blocks, distribution cross beams are placed on the distribution longitudinal beams, and a bent cap formwork system is erected on the distribution cross beams. According to the combined supporting system for the long cantilever bent cap, manpower and material resource investment can be greatly saved, construction is convenient and fast, and working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bent cap, especially a long cantilever bent cap combined supporting system. BACKGROUND

[0002] Bent cap refers to the cross beam arranged on the top of the pier for supporting, distributing and transferring the load of the superstructure of the bridge. The main function is to support the superstructure of the bridge and transfer all the load to the substructure. In the existing engineering examples, part of the bridge is located on the route widening section, the bridge width is wider, and the bent cap length is larger, which leads to the fact that part of the bent cap has a long cantilever length (up to 6.68m in the engineering example) on both sides of the pier body. For such bent cap with long cantilever length and large self-weight, the floor type steel pipe or scaffold supporting system is generally used for construction, but when the height of the pier is high (> 40m), the construction design of the floor type steel pipe or scaffold supporting system is more complex, the material consumption is large, the construction risk is high, and the manpower and material resources investment is large. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a long cantilever bent cap combined supporting system which can be used for many times, greatly saves the manpower and material resources investment, is convenient for construction, and improves the work efficiency.

[0004] To solve the above technical problem, the utility model adopts the following technical scheme:

[0005] A long cantilever bent cap combined supporting system, comprising triangular bracket supporting structures arranged on both sides of the pier body, the triangular bracket supporting structures are fixed on the embedded parts on the pier body; the plug rods pass through the pier body in front and back and support the cross beams, the cross beams are fixed on the triangular bracket supporting structures; the cross beams and the triangular bracket supporting structures are arranged with unloading blocks at intervals, the unloading blocks are arranged with distribution longitudinal beams, the distribution longitudinal beams are arranged with distribution cross beams, and the distribution cross beams are arranged with bent cap formwork systems.

[0006] The triangular bracket supporting structure comprises triangular brackets, the triangular brackets are arranged at intervals and are fixed by welding through connecting plates.

[0007] The embedded part comprises an embedded plate and anchor bars, and the embedded plate and the anchor bars are connected by hole plug welding.

[0008] The embedded plate is flush exposed on both sides of the pier body.

[0009] The triangular bracket supporting structure is fixed with a backing plate, and the backing plate is positionally corresponding to the embedded plate and is fixed by welding.

[0010] The triangular bracket adopts double-spliced 36# channel steel.

[0011] The plug rod and the reserved hole channel of the pier body are fixed by a wooden wedge.

[0012] The utility model provides a long overhanging cover beam combined type support system has the following technical effects:

[0013] Compared with the comparative document 1 " CN201821664724 - a long overhanging large section cover beam bracket body", the difference of the application lies in:

[0014] 1), first, the stress system of whole structure is not same, the application passes through the support structure (that is, the pole 6 of inserting, crossbeam 7) combination system of triangular bracket, core steel rod and bears the cover beam weight, and the structure in the comparative document 1 only bears the cover beam weight by the bracket of both sides, compared with the comparative document 1, the bracket structure of the application and the fixed more simply with pier column, and the production is more convenient.

[0015] 2) second, the fixed mode of bracket and pier column is not same, the bracket in the application is fixed on the pier body embedded plate through the gasket welding, and the bracket in the comparative document 1 is fixed on the pier body through the preformed bracket anchor box on the pier body, and then is connected and fixed on the pier body by the tie rod.The fixed processing of the bracket and the pier body in the application is less destructive to the structure of the pier body itself.The pole 6 of inserting in the application is inserted in the thickness direction of the pier body, and the bracket is fixed on the pier body embedded plate through the gasket welding, and the anchor reinforcement after the embedded plate can be directly welded on the internal reinforcement of the pier body, and the structure of the pier body is less damaged.The bracket anchor box in the comparative document 1 needs to invade into the interior of the pier body when reserving, and the main reinforcement in the interior of the pier body is cut off, and the tie rod is inserted in the length direction of the pier body, and the construction is more complex, and the structure of the pier body is more damaged. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further explained in connection with the drawings and examples:

[0017] Figure 1 It is the front elevation view of the utility model.

[0018] Figure 2 It is the side elevation view of the utility model.

[0019] Figure 3 It is the plan view of the utility model.

[0020] Figure 4 It is the local enlarged schematic view of the triangular bracket structure and the embedded part junction of the utility model.

[0021] Figure 5 It is the front view of the triangular bracket in the utility model (a is the bridge pier edge line).

[0022] Figure 6 It is the front view of the embedded part in the utility model (a is the bridge pier edge line).

[0023] In the diagram: 1. Triangular bracket; 2. Anchor bar; 3. Embedded plate; 4. Pad plate; 5. Connecting plate; 6. Insert rod; 7. Crossbeam; 8. Unloading block; 9. Distribution longitudinal beam; 10. Distribution crossbeam; 11. Formwork system; 12. Cap beam; 13. Pier body. Detailed Implementation

[0024] like Figures 1-4 As shown, a combined support system for a long cantilevered cap beam includes a triangular bracket support structure, embedded parts, and a through-bar support structure.

[0025] The triangular bracket support structure includes a triangular bracket 1, which is welded from double-channel steel, with steel plates welded at each node. The triangular bracket support structure on one side of the pier body 13 is welded from two triangular brackets 1. A pad 4 is welded to the upper and lower parts of each triangular bracket 1. The two triangular brackets are fixed together by welding a connecting plate 5. The triangular bracket support structure is fixed to the triangular bracket 1 by welding the pad 4 through the embedded parts in the pier body 13.

[0026] The embedded part consists of an embedded plate 3 and an anchor bar 2, and the embedded plate 3 and the anchor bar 2 are connected by through-hole plug welding.

[0027] The core rod support structure consists of a core rod 6 and a crossbeam 7.

[0028] The unloading blocks 8 are placed on the triangular brackets 1 and the crossbeams 7 on both sides of the pier body 13. Then, the fixed distribution longitudinal beams 9 are placed on the unloading blocks 8. The distribution longitudinal beams 9 are composed of double I-beams. After the distribution longitudinal beams 9 are arranged, the distribution crossbeams 10 are placed. Then, the cap beam formwork system 11 is erected on the distribution crossbeams 10 for the cap beam 12 to be poured.

[0029] The unloading block 8 is a commercially available product with a screw in the middle. By rotating the threaded part, the length of its extension or retraction can be changed, thereby achieving height adjustment.

[0030] Working principle and process:

[0031] Step 1: Based on the height of the support system and the bottom elevation of the cap beam, reserve two holes at the top of the pier body 13 so that the insert rod 6 can be inserted.

[0032] Step 2: Fabricate the embedded parts, which consist of embedded plate 3 and anchor bar 2. The embedded plate 3 and anchor bar 2 are connected by through-hole plug welding. After the embedded parts are fabricated, the positions of the embedded parts are determined by measuring and positioning within the pier body 13 according to the structure of the triangular bracket 1 and the bottom elevation of the cap beam. Then, the four embedded parts are welded and fixed to the reinforcing bars within the pier body 13. Finally, the last part of the concrete of the pier body 13 is poured, so that the embedded parts are embedded in the concrete of the pier body 13, with the embedded plate 3 protruding flush with both sides of the pier body 13.

[0033] Step 3: Assemble the triangular bracket 1, which is assembled by double 36# channel steel, and each node is welded by 20mm steel plate, and the surface of the channel steel is paved with 10mm steel plate; the inner support of the frame is a single 36# channel steel.

[0034] Step 4: Assemble the triangular bracket support structure on the ground, and the single-sided triangular bracket support structure of the pier shaft 13 is welded by two triangular brackets 1, each welded with a base plate 4 at the upper and lower parts of the single triangular bracket 1, and the two triangular brackets 1 are welded and fixed by the connecting plate 5. Then use the crane to lift the triangular bracket support structure, slowly approach the position of the embedded plate 3, align the base plate 4 on the triangular bracket 1 with the embedded plate 3, and then weld and fix them, and then perform weld quality detection, and only after passing the detection can the next step of construction be carried out. According to the above steps, the installation of the triangular bracket support structure on the other side of the pier shaft 13 is carried out.

[0035] Step 5: Insert the insertion rod 6 from the two reserved holes at the top of the pier shaft 13, and use wooden wedges to fix the insertion rod 6 firmly. Then use two cranes to lift the two beams 7 and place them on the insertion rod 6.

[0036] Step 6: Place the unloading block 8 on the triangular bracket 1 and the beam 7 on both sides of the pier shaft, and then place the fixed distribution longitudinal beam 9 on the unloading block 8, which is composed of double I-beams. After the distribution longitudinal beam 9 is arranged, place the distribution transverse beam 10, and then erect the cap beam formwork system 11 on the distribution transverse beam 10.

[0037] Step 7: After the cap beam support system is installed in place, adjust the height of the unloading block 8 to control the elevation and flatness of the cap beam bottom form, and after the elevation and flatness of the cap beam bottom form meet the requirements, proceed with the subsequent construction of the cap beam; after the cap beam is poured and the strength meets the requirements, lower the height of the unloading block 8 to make the bottom support structure fall down, and then carry out the dismantling work of the support system.

[0038] Step 8: After the completion of a cap beam construction, the entire support system is transferred to the next cap beam for use. This combined support system can be used multiple times, greatly saving manpower and material resources, and improving work efficiency.

[0039] When disassembling, the welded parts of the embedded plate 3 and the base plate 4 are cut and disassembled by arc welding.

Claims

1. A long cantilevered cap beam composite support system, characterized by: The triangular bracket support structure is arranged on both sides of the pier body (13) and fixed with the embedded part on the pier body (13); the inserting rod (6) passes through the pier body (13) and supports the cross beam (7) in front and back, and the cross beam (7) is fixed with the triangular bracket support structure; the unloading blocks (8) are arranged on the cross beam (7) and the triangular bracket support structure at intervals, the distribution longitudinal beams (9) are placed on the unloading blocks (8), the distribution cross beams (10) are placed on the distribution longitudinal beams (9), and the cap beam template system (11) is arranged on the distribution cross beams (10).

2. The long cantilevered roof beam composite support system according to claim 1, wherein: The triangular bracket support structure comprises triangular brackets (1), and the triangular brackets (1) are arranged at intervals and welded and fixed through the connecting plates (5).

3. The long cantilevered roof beam composite support system according to claim 2, wherein: The embedded part comprises an embedded plate (3) and anchor bars (2), and the embedded plate (3) and the anchor bars (2) are connected through hole plug welding.

4. The long cantilevered roof beam composite support system according to claim 3, wherein: The embedded plate (3) is flushly exposed on both sides of the pier body (13).

5. The long cantilevered roof beam composite support system according to claim 4, wherein: The triangular bracket support structure is fixed with the backing plates (4), and the backing plates (4) are welded and fixed with the embedded plate (3) in position correspondence.

6. The long cantilevered roof beam composite support system according to claim 5, wherein: The triangular bracket (1) adopts double-spliced 36# channel steel.

7. The long cantilevered roof beam composite support system according to claim 6, wherein: The inserting rod (6) and the reserved hole channel of the pier body (13) are fixed through the wooden wedge.

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