CN207227958U - Variable cross-section beam sections type variable framework of steel reinforcement construction moulding bed device - Google Patents

Abstract

The utility model relates to a variable cross-section segmental beam variable steel bar frame construction tire frame device, which belongs to the field of bridge engineering segmental beam steel bar construction. It includes a main frame and a bracket arranged under the main frame, the main frame also includes a horizontal underframe, a roof frame, and side wall frames and wing frames symmetrically arranged at both ends of the main frame. Steel pipes are welded in parallel on the wall tire frame and the side wing tire frame. The steel pipes are pierced with round steel for comparison and positioning of steel bars. The brackets on both sides of the underframe are provided with chain hoist support rods for hanging and towing the horizontal underframe and limit slots for adjusting the height of the horizontal underframe. The advantage of the utility model is that it ensures that the segmental beam reinforcing bars of multiple cross-sections can be positioned. The construction cost is saved, the safety risk of high-altitude operation is reduced, and the construction quality and efficacy are improved.

Description

Construction tire frame device of variable cross-section segmental beam with variable steel frame

Technical field:

The utility model relates to a variable cross-section segmental beam variable steel bar frame construction tire frame device, which belongs to the field of bridge engineering segmental beam steel bar construction.

Background technique:

At present, most of the large-scale bridges using short-line method segmental beam prefabrication technology in China are constant-section box girders, which do not involve variable cross-sections. The steel frame construction adopts the overall constant-section steel frame construction tire frame. Large-section and variable-section cast-in-place beams are generally bound with steel bars in the formwork. However, if the formwork is occupied for a long time for reinforcement work in the construction of segmental beams, the formwork will be polluted and the appearance will be affected. At the same time, the construction efficiency will be affected, and the construction of the segmental beams will be lost. The advantages. Due to the different forms of various sections, the one-time forming of the steel skeleton is not suitable for the binding of the steel skeleton of the segmental beams with large spans, large cross-sections, and variable cross-sections, and it cannot ensure that the installation and processing of the changing steel skeleton can finally reach the design-required thickness of the protective layer .

Invention content:

The technical problem to be solved by the utility model is: to provide a supporting steel tire frame design, which can accurately locate the steel bars of the segmental beams of multiple sections, and improve the binding accuracy and the The pass rate of the protective layer can save construction costs, reduce safety risks of high-altitude operations, and improve construction quality and efficacy.

In view of the above technical problems, the utility model relates to a variable cross-section segmental beam variable steel frame construction tire frame device, which includes a main body frame and a bracket arranged under the main body frame, and the main body frame also includes a horizontal base frame, The roof frame and the sidewall frame and the wing frame symmetrically arranged at both ends of the main frame, the sidewall frame and the side frame are welded in parallel with steel pipes, and the steel pipes are pierced with steel bars for comparison and positioning Round steel, the horizontal bottom frame and the top surface of the roof tire frame are provided with precise positioning slots, and the brackets connected to both sides of the horizontal bottom frame are provided with chain hoist support rods for hanging chain hoists to pull the horizontal bottom frame and Limiting slot for adjusting the height of the horizontal chassis.

Preferably, in order to ensure the safety of high-altitude operations, a construction platform is provided above the brackets on both sides of the horizontal underframe, and a safety ladder is provided on one side of the construction platform, which is convenient for construction personnel to go up and down the construction platform during construction.

Preferably, guardrails are provided on the construction platform, which effectively improves the construction safety of construction personnel and reduces safety risks.

Preferably, the safety ladder is arranged on the lower side of the construction platform, which can reduce the length of the safety ladder and save material costs.

Preferably, the limiting grooves are arranged symmetrically on the underside of the brackets on both sides of the horizontal underframe, and the position of the horizontal underframe can be adjusted according to the section of the section beam, so that the main body composed of the horizontal underframe, the bracket and the roof frame The inner contour of the reinforced tire frame matches the shape of the reinforced skeleton.

Preferably, in order to ensure the binding accuracy of the steel bars on the bottom plate of the segmental beam and the top plate, the precise positioning slots are evenly arranged on the horizontal underframe and the tire frame of the roof, and match the binding positions of the steel bars on the bottom plate of the segmental beam and the top plate.

Preferably, in order to meet the needs of on-site construction, the number of the main tire frame is consistent with that of the segment beam formwork.

Compared with the prior art, the utility model is beneficial in that: according to the design of the formwork system, the reinforced tire frame can also be divided into equal tire frames, and corresponding to the section beam section change mode, the number of limiting slots and the Position, corresponding to different formwork systems to carry out the corresponding steel binding installation, to ensure that the segmental beam steel bars of multiple sections can be positioned, saving construction costs, reducing the safety risk of high-altitude operations, and improving construction quality and efficiency.

Description of drawings:

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a side view of the utility model;

Fig. 3 is the structural representation of positioning steel pipe and round steel of the present utility model;

Figure 4 is a schematic diagram of the structure of the precise positioning card slot on the horizontal chassis;

Figure 5 is a schematic diagram of the structure of the precise positioning slot on the roof frame;

Fig. 6 is a structural schematic diagram of the chain hoist support rod of the present utility model;

Fig. 7 is a schematic diagram of the structure of the limiting groove of the present invention.

In the figure: 1. Main tire frame; 2. Bracket; 3. Horizontal bottom frame; 4. Side wall tire frame; 5. Side wing tire frame; 6. Top plate tire frame; 7. Steel pipe; Positioning card slot; 10, construction platform; 11, safety ladder; 12, guardrail; 13, chain hoist support rod; 14, limit slot.

Detailed ways:

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in detail:

As shown in Figures 1 to 6, a variable cross-section segmental beam variable steel frame construction tire frame device, the device includes a main tire frame 1 and a bracket 2 connected under the tire frame, the main tire frame 1 includes a horizontal Underframe 3, sidewall tire frame 4, side wing tire frame 5, roof tire frame 6, sidewall tire frame 4, side wing tire frame 5 welded steel pipe 7 inside, steel pipe 7 is pierced with round steel 8 for comparison and positioning of steel bars, The horizontal bottom frame 3 and the top surface of the top plate tire frame 6 are provided with precise positioning slots 9, and the top of the support 2 is equipped with a construction platform 10. The chain hoist support bar 13 that is hung on the traction horizontal underframe 3 is provided with a limit groove 14 for adjusting the height of the horizontal underframe 3 at the bottom, and the height of the horizontal underframe 3 is adjusted through the limit groove 14, so that the inside of the main tire frame 1 The profile matches the shape of the steel skeleton of the segmental beam, so as to facilitate the binding of the steel bars. The main tire frame 1 is provided with precise positioning slots 9, which are used for precise positioning of steel bars in the construction process, so as to manufacture high-standard variable-section segmental beam steel bar skeletons.

In order to ensure the overall stability of the main tire frame 1, the bottom end of the bracket 2 is fixed on the pre-embedded steel backing plate of the ground foundation through expansion anchor bolts.

In order to ensure the safety of high-altitude operations, a construction platform 10 is built on the top of the support 2 , and a safety ladder 11 is connected to the lower side of the construction platform 10 , and guardrails 12 are provided.

In order to ensure the binding accuracy of the web and wing plates, the inner sides of the side wall frame 4 and the wing frame 5 are symmetrically welded with double rows of steel pipes 7, and the steel pipes 7 are pierced with round steel bars 8 for comparison and positioning of the steel bars, and are aligned with the segmental beam webs. The binding positions of the plate and the wing plate are matched.

In order to ensure the binding accuracy of the steel bars on the bottom plate and roof plate, precise positioning slots 9 are provided on the top surfaces of the horizontal base frame 3 and the roof frame 6, and match the binding positions of the steel bars on the bottom plate and roof plate of the segmental beam.

In order to make the inner contour of the main steel tire frame 1 coincide with the shape of the steel skeleton, the upper part of the innermost support 2 is provided with a chain hoist support rod 13 for hanging the traction horizontal underframe 3, and the lower part is provided with a height for adjusting the horizontal underframe 3 Limiting slots 14, the number and positions of the limiting slots 14 correspond to the section variation of the segmental beams.

In order to meet the on-site construction, the number of the main frame 1 is the same as the number of the prefabricated formwork of the variable cross-section segmental beam.

In order to ensure the thickness of the solid protective layer of the beam section, the installation slope and size of the inclined wall sections of the roof frame 6, side wing frame 5, and side wall frame 4 correspond to the design of the formwork system.

Specifically, the bottom end of the bracket 2 is fixed to the embedded steel backing plate of the ground foundation through expansion anchor bolts. A construction platform 10 is built on the top of the support 2 , and a safety ladder 11 is built on the lower side of the construction platform 10 and a guardrail 12 is provided. The horizontal underframe 3 is horizontally erected on the support 2, and the top surface is provided with a precise positioning slot 9 matching the binding position of the bottom plate steel bar, and the positioning slot 9 matches the binding position of the segmental beam bottom plate steel bar. The sidewall tire frames 4 on both sides are arranged symmetrically, connected to the top of the horizontal base frame 3, and the inner side is symmetrically welded with double rows of steel pipes 7, the steel pipes 7 are pierced with round steel 8 for comparison and positioning of steel bars, and the round steel 8 is connected to the segmental beam web Match the location of the reinforcement ties. The flank tire frames 5 on both sides are arranged symmetrically, connected with the top of the sidewall tire frame 4, and the inner side is symmetrically welded with double rows of steel pipes 7, and the steel pipes 7 are pierced with round steel bars 8 for comparison and positioning of steel bars, and the round steel bars 8 are connected to the segment beam flange Match the location of the reinforcement ties. The roof frame 6 is connected to the top of the wing frame 5, and the top surface is provided with a precise positioning slot 9 matching the binding position of the roof reinforcement, and the positioning slot 9 matches the binding position of the segmental beam roof reinforcement. The installation slope and size of the inclined wall sections of the top plate tire frame 6, the side wing tire frame 5, and the side wall tire frame 4 correspond to the formwork system design. The upper part of the innermost bracket 2 is provided with a chain hoist support rod 13 for hanging the chain hoist to pull the horizontal underframe 3, and the lower part is provided with a limit groove 14 for adjusting the height of the horizontal underframe 3, the number and position of which are the same as those of the segmental beam. Corresponding to the way of section change. The height of the horizontal underframe 3 is adjusted through the limiting groove 14, thereby changing the width and height of the segmental beam bottom plate, so that the inner contour of the main tire frame 1 matches the profile of the segmental beam reinforcement skeleton, so as to bind the reinforcement.

In a word, the above are only preferred embodiments of the utility model, and are not intended to limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model are all valid. Still belong to the scope of coverage of the utility model patent.

Claims (7)

1. A variable cross-section segmental beam variable steel frame construction tire frame device, including a main body frame (1) and a bracket (2) arranged under the main body frame (1), characterized in that: the main body frame The frame (1) also includes a horizontal underframe (3), a roof frame (6), and side wall frames (4) and wing frames (5) symmetrically arranged at both ends of the main body frame (1). Both the tire frame (4) and the side wing frame (5) are welded in parallel with steel pipes (7), and the steel pipes (7) are pierced with round steel (8) for comparison and positioning of steel bars, and the horizontal underframe (3 ) and the top plate tire frame (6) are provided with precise positioning slots (9), and the brackets (2) connected to both sides of the horizontal chassis (3) are provided with chain hoists for hanging the horizontal chassis (3) The chain hoist support bar (13) and the limit slot (14) for adjusting the height of the horizontal underframe (3). 2. The variable cross-section segmental beam variable steel frame construction tire frame device according to claim 1, characterized in that: a construction platform ( 10), a safety ladder (11) is provided on one side of the construction platform (10). 3. The variable cross-section segmental beam variable steel frame construction tire frame device according to claim 2, characterized in that: the construction platform (10) is provided with guardrails (12). 4. The variable cross-section segmental beam variable steel frame construction tire frame device according to claim 2, characterized in that: the safety ladder (11) is set on the lower side of the construction platform (10). 5. The variable cross-section segmental beam variable steel frame construction tire frame device according to claim 1, characterized in that: the limit groove (14) is symmetrically arranged on the brackets ( 2) The underside. 6. The variable cross-section segmental beam variable steel frame construction tire frame device according to claim 1, characterized in that: the precise positioning slots (9) are evenly arranged on the horizontal bottom frame (3) and the roof tire frame (6) on. 7. The variable-section segmental beam variable steel frame construction tire frame device according to claim 1, characterized in that: the number of the main tire frame (1) is the same as that of the segmental beam formwork.