Integral hoisting and tying jig for reinforcement cage of bridge pier with polygonal cross section and its use method

Abstract

The overall hoisting and tying jig and use method of the reinforcement cage of the polygonal cross-section bridge pier include a fixed limiting bottom plate, a detachable limiting side plate and a detachable limiting top plate. The fixed limiting bottom plate is divided into a transverse limiting bottom plate and a longitudinal limiting bottom plate. The short heads of round steel are arranged on the transverse limiting bottom plate at the designed spacing of the reinforcement cage main bars, and the short heads of round steel are arranged on the longitudinal limiting bottom plate at the designed spacing of the reinforcement cage hoop bars. One end of the detachable limiting side plate is detachably connected to both sides of the fixed limiting bottom plate, and a thin steel pipe is arranged on the plate surface of the detachable limiting side plate at the designed spacing of the vertical main bars of the reinforcement cage. By using the tying jig of the present invention, the reinforcement cage can be fast tied, and the manufacturing efficiency of the reinforcement cage can be improved. The spacing of the reinforcement bars can be effectively controlled by the tying jig. The reinforcement cage hoisting limiter limits the deformation of the reinforcement bars when the reinforcement cage is hoisted as a whole, thereby ensuring the positioning accuracy of the reinforcement cage.

Description

Technical Field

[0001] The invention relates to the field of steel cage binding jigs, and in particular to an integral hoisting and binding jig for a bridge pier with a polygonal cross-section and a use method thereof. Background Art

[0002] At present, the domestic bridge pier reinforcement is mainly divided into two construction processes: pre-embedded joint reinforcement and on-site binding and integral hoisting reinforcement cage. When the cross section of the pier is relatively complex, the construction process of pre-embedded joint reinforcement and on-site binding is usually adopted; when the cross section of the pier is relatively simple, such as a round shape, the construction process of integral hoisting reinforcement cage is usually adopted.

[0003] Some types of bridge piers in engineering projects include hexagonal piers and vase piers, which are polygonal cross-sections. If the on-site binding construction process is used, it will take a lot of time and labor, reducing construction efficiency. If the overall lifting process of the steel cage is used, it is necessary to ensure the manufacturing accuracy and efficiency of the steel cage and reduce the deformation of the main reinforcement of the steel cage during the lifting process in order to meet the quality requirements. Summary of the invention

[0004] The present invention provides a polygonal cross-section bridge pier steel cage integral hoisting binding jig and a use method thereof to meet the process requirements for the overall hoisting of the steel cage, ensure the manufacturing accuracy and efficiency of the steel cage and avoid deformation of the main bars of the steel cage during the hoisting process.

[0005] The technical solution adopted by the present invention is:

[0006] The overall lifting and binding jig for the reinforcement cage of the polygonal cross-section bridge pier comprises a fixed limiting bottom plate, a detachable limiting side plate and a detachable limiting top plate. The fixed limiting bottom plate is divided into a transverse limiting bottom plate and a longitudinal limiting bottom plate. The short heads of round steel bars are arranged on the transverse limiting bottom plate at a designed spacing between the main reinforcement bars of the reinforcement cage, and the short heads of round steel bars are arranged on the longitudinal limiting bottom plate at a designed spacing between the stirrups of the reinforcement cage. One end of the detachable limiting side plate is detachably connected to both sides of the fixed limiting bottom plate, and thin steel pipes are arranged on the plate surface of the detachable limiting side plate at a designed spacing between the vertical main reinforcement bars of the reinforcement cage. The other end of the detachable limiting side plate is connected to the transverse ends of the detachable limiting top plate by bolts, and the outer plate surface of the detachable limiting top plate arranges the short heads of round steel bars at a designed spacing between the main reinforcement bars of the reinforcement cage.

[0007] The polygonal cross-section bridge pier reinforcement cage integral hoisting and binding jig also includes a reinforcement cage hoisting shaping limiter.

[0008] The steel cage hoisting shaping limiter is a steel plate, the wall surface of the steel plate in contact with the steel cage is cut with a groove for main reinforcement clamping, and end plates for connection are arranged at both ends of the steel plate, and bolt holes are opened on the end plates.

[0009] The described steel cage hoisting shaping limiter is divided into two shapes. One has an inner side surface that is a bending surface with the same shape as the detachable limiting side plate. The end plates of this limiter are fixed at both ends of the steel cage hoisting shaping limiter. The other has an inner side surface that is a plane with a slot. The end plates of this limiter are fixed at both ends of the inner side surface of the steel cage hoisting shaping limiter.

[0010] The shape of the detachable limiting side plate is the same as the side shape of the bridge pier.

[0011] A φ20 round steel bar is passed through the thin steel pipe.

[0012] A rotating shaft is arranged at one end of the detachable limiting side plate connected to the fixed limiting bottom plate, and a rotating shaft plug-in ear plate is fixed on the fixed limiting bottom plate and is rotatably connected to the fixed limiting bottom plate through the rotating shaft passing through the ear plate.

[0013] The detachable limiting side panels are connected with diagonal braces to prevent the side panels from shaking.

[0014] A fixing plate is provided on the fixed limiting bottom plate at a position connected to the detachable limiting side plate. The fixing plate is provided with bolts and is locked and fixed to the detachable limiting side plate through the bolts.

[0015] Method of using the overall hoisting and tying jig for the reinforcement cage of the polygonal cross-section bridge pier:

[0016] a. Assemble the steel cage jig: Assemble the steel cage binding jig according to the design;

[0017] b. Placement of steel cage stirrups: Arrange and fix the steel cage stirrups in sequence according to the short heads of the round steel of the longitudinal limit bottom plate of the fixed limit bottom plate;

[0018] c. Place the main reinforcement of the steel cage: arrange the main reinforcement in sequence according to the horizontal limiting bottom plate of the fixed limiting bottom plate and the short head of the round steel of the detachable limiting top plate, and tie them with the stirrups;

[0019] d. Install the steel cage hoisting stopper: embed the steel cage hoisting stopper along the main reinforcement of the steel cage, connect it to the end plate of the steel cage hoisting stopper with bolts to fasten the four-side stoppers to ensure that the main reinforcement does not deviate during the hoisting process, and set internal supports in the steel cage;

[0020] e. Remove the side panels and top panels, and lift the steel cage: remove the bolts on the fixed plate connecting the removable limiting side panels and the fixed limiting bottom plate, remove the bolts connecting the removable limiting side panels and the removable limiting top plate, turn the rotating shaft on the removable limiting side panels to bring the removable limiting side panels down, and then lift the steel cage.

[0021] The beneficial effects of the present invention are as follows: by using the tying jig of the present invention, the steel cage can be quickly tied, thereby improving the manufacturing efficiency of the steel cage; the spacing between the steel bars can be effectively controlled by the tying jig; the steel cage hoisting limiter limits the deformation of the steel bars when the steel cage is hoisted as a whole, thereby ensuring the positioning accuracy of the steel cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic cross-sectional view of a tire mold of the present invention.

[0023] Figure 2 It is a schematic diagram of the longitudinal section of the tire of the present invention.

[0024] Figure 3 It is a schematic diagram of the structure of the steel cage hoisting limiter of the present invention whose inner side surface is a bent surface.

[0025] Figure 4 It is a right view of the steel cage hoisting limiter of the present invention whose inner side surface is a bent surface.

[0026] Figure 5 It is a schematic diagram of the structure of a steel cage hoisting limiter with a flat inner side surface according to the present invention.

[0027] Figure 6 It is a right view of the steel cage hoisting limiter of the present invention whose inner side surface is a plane.

[0028] Among them: 1-removable limiting top plate; 2-removable limiting side plate; 3-thin steel pipe; 4-fixed limiting bottom plate; 5-short head of round steel; 6-rotating shaft; 7-diagonal brace; 8-rebar cage hoisting shaping limiter; 9-bolt hole; 10-card slot; 11-end plate; 12-fixed plate. DETAILED DESCRIPTION

[0029] The overall lifting and binding jig of the reinforcement cage of the polygonal cross-section bridge pier comprises a fixed limiting bottom plate 4, a detachable limiting side plate 2 and a detachable limiting top plate 1. The fixed limiting bottom plate 4 is divided into a transverse limiting bottom plate and a longitudinal limiting bottom plate. The short round steel heads 5 are arranged on the transverse limiting bottom plate at a designed spacing between the main reinforcement bars of the reinforcement cage, and the short round steel heads 5 are arranged on the longitudinal limiting bottom plate at a designed spacing between the stirrups of the reinforcement cage. One end of the detachable limiting side plate 2 is detachably connected to both sides of the fixed limiting bottom plate 4, and a thin steel pipe 3 is provided on the plate surface of the detachable limiting side plate 2 at a designed spacing between the vertical main reinforcement bars of the reinforcement cage. The other end of the detachable limiting side plate 2 is connected to the detachable limiting top plate 1 at both transverse ends by bolts, and the outer plate surface of the detachable limiting top plate 1 is arranged with short round steel heads 5 at a designed spacing between the main reinforcement bars of the reinforcement cage.

[0030] The polygonal cross-section bridge pier reinforcement cage integral hoisting and binding jig also includes a reinforcement cage hoisting shaping limiter 8.

[0031] The steel cage hoisting shaping limiter 8 is a steel plate, and the wall surface where the steel plate contacts the steel cage is cut with a groove 10 for main reinforcement clamping. End plates 11 for connection are provided at both ends of the steel plate, and bolt holes 9 are opened on the end plates 11.

[0032] The steel cage hoisting shaping limiter 8 is divided into two shapes, one of which has an inner side surface that is a bending surface of the same shape as the detachable limiting side plate 2, and the end plate 11 of this limiter is fixed at both ends of the steel cage hoisting shaping limiter 8, and the other inner side surface is a plane with a slot 10, and the end plate 11 of this limiter is fixed at both ends of the inner side surface of the steel cage hoisting shaping limiter 8.

[0033] The shape of the detachable limiting side plate 2 is the same as the side shape of the bridge pier.

[0034] A φ20 round steel bar is passed through the thin steel pipe 3 .

[0035] A rotating shaft 6 is arranged at one end of the detachable limiting side plate 2 connected to the fixed limiting bottom plate 4. A rotating shaft plug-in ear plate is fixed on the fixed limiting bottom plate 4 and is rotatably connected to the fixed limiting bottom plate 4 through the rotating shaft 6 inserted into the ear plate.

[0036] The detachable limiting side plate 2 is connected with a diagonal support 7 to prevent the side plate from shaking.

[0037] A fixing plate 12 is provided at a position on the fixed limiting bottom plate 4 connected to the detachable limiting side plate 2 . Bolts are provided on the fixing plate 12 , and the fixing plate 12 is locked and fixed to the detachable limiting side plate 2 through the bolts.

[0038] Method of using the overall hoisting and tying jig for the reinforcement cage of the polygonal cross-section bridge pier:

[0039] a. Assemble the steel cage jig: Assemble the steel cage binding jig according to the design;

[0040] b. Placement of steel cage stirrups: Arrange and fix the steel cage stirrups in sequence according to the short round steel heads 5 of the longitudinal limit bottom plate of the fixed limit bottom plate 4;

[0041] c. Place the main reinforcement of the steel cage: arrange the main reinforcement in sequence according to the transverse limiting bottom plate of the fixed limiting bottom plate 4 and the short head of the round steel 5 of the detachable limiting top plate 1, and tie and fix them with the stirrups;

[0042] d. Install the steel cage hoisting shaping limiter: embed the steel cage hoisting limiter 8 along the formed steel cage main reinforcement, and use bolts to connect to the end plate 11 of the steel cage hoisting shaping limiter 8 to fasten the four-side limiters to ensure that the main reinforcement does not deviate during the hoisting process, and set internal supports in the steel cage;

[0043] e. Remove the side panels and top panel, and lift the steel cage: remove the bolts on the fixed plate 12 connecting the detachable limiting side panel 2 and the fixed limiting bottom panel 4, remove the bolts connecting the detachable limiting side panel 2 and the detachable limiting top panel 1, rotate the rotating shaft 6 on the detachable limiting side panel 2 to lay down the detachable limiting side panel 2, and then lift the steel cage.

[0044] The present invention will be described below in conjunction with specific embodiments:

[0045] The overall hoisting and binding jig for the reinforcement cage of a bridge pier with a polygonal cross-section comprises a fixed limiting bottom plate 4, a detachable limiting side plate 2 and a detachable limiting top plate 1. The fixed limiting bottom plate 4 is divided into a transverse limiting bottom plate and a longitudinal limiting bottom plate. On the transverse limiting bottom plate, short round steel heads 5 are arranged at a designed spacing between main reinforcement bars of the reinforcement cage. On the longitudinal limiting bottom plate, short round steel heads 5 are arranged at a designed spacing between stirrups of the reinforcement cage. One end of the detachable limiting side plate 2 is detachably connected to both sides of the fixed limiting bottom plate 4. A thin steel pipe 3 is arranged on the plate surface of the detachable limiting side plate 2 at a designed spacing between vertical main reinforcement bars of the reinforcement cage. The other end of the detachable limiting side plate 2 is detachably connected to both sides of the fixed limiting bottom plate 4. A thin steel pipe 3 is arranged on the plate surface of the detachable limiting side plate 2 at a designed spacing between vertical main reinforcement bars of the reinforcement cage. One end is connected to the detachable limiting top plate 1 with bolts at both ends laterally. The outer plate surface of the detachable limiting top plate 1 arranges round steel short heads 5 according to the designed main reinforcement spacing of the reinforcement cage. The fixed limiting bottom plate 4, the detachable limiting side plate 2 and the detachable limiting top plate are 12# channel steel. The polygonal cross-section bridge pier reinforcement cage overall lifting and binding jig also includes a reinforcement cage lifting shaping limiter 8. The reinforcement cage lifting shaping limiter 8 is a steel plate with a thickness of 10mm. The wall surface where the steel plate contacts the reinforcement cage is cut with a groove 10 for clamping the main reinforcement. End plates 11 for connecting are provided at both ends of the steel plate, and bolt holes 9 are opened on the end plates 11. The steel cage hoisting and shaping limiter 8 is divided into two shapes, one of which has an inner side surface that is the same as the bending surface of the detachable limiting side plate 2, and the end plate 11 of this limiter is fixed at both ends of the steel cage hoisting and shaping limiter 8, and the other inner side surface is a plane with a slot 10, and the end plate 11 of this limiter is fixed at both ends of the inner side surface of the steel cage hoisting and shaping limiter 8. The steel plate thickness of the steel cage hoisting and shaping limiter 8 is 10mm, and the shape of the detachable limiting side plate 2 is the same as the side shape of the bridge pier. A φ20 round steel is passed through the thin steel pipe 3. A rotating shaft 6 is provided at one end where the detachable limiting side panel 2 is connected to the fixed limiting bottom panel 4, and a rotating shaft 6 is fixed on the fixed limiting bottom panel 4 to plug in the ear panel, and the rotating shaft 6 is passed through the ear panel and rotatably connected to the fixed limiting bottom panel 4, so that the detachable limiting side panel 2 can be rotated to expose the internal steel cage, and a diagonal brace 7 is connected to the detachable limiting side panel 2 to prevent the side panel from shaking, and a fixed plate 12 is provided at the position on the fixed limiting bottom panel 4 where the detachable limiting side panel 2 is connected, and bolts are provided on the fixed plate 12, and the fixed plate 12 is locked and fixed to the detachable limiting side panel 2 by the bolts, so that the detachable limiting side panel 2 is stabilized, and the diagonal brace 7 is cooperated to enhance the stability.

[0046] Working principle:

[0047] The jig can realize the rapid positioning and binding of the steel cage, and all the steel bars are arranged at the specified spacing. At the same time, each set of steel cage is equipped with a set of steel cage hoisting and shaping limiters 8, which can prevent the position of the main bars from changing during the hoisting process and ensure the installation accuracy.

[0048] Method of using the overall hoisting and tying jig for the reinforcement cage of the polygonal cross-section bridge pier:

[0049] a. Assemble the steel cage jig: Assemble the steel cage binding jig according to the design;

[0050] b. Placement of steel cage stirrups: Arrange and fix the steel cage stirrups in sequence according to the short round steel heads 5 of the longitudinal limit bottom plate of the fixed limit bottom plate 4;

[0051] c. Place the main reinforcement of the steel cage: arrange the main reinforcement in sequence according to the transverse limiting bottom plate of the fixed limiting bottom plate 4 and the short head of the round steel 5 of the detachable limiting top plate 1, and tie and fix them with the stirrups;

[0052] d. Install the steel cage hoisting shaping limiter: embed the steel cage hoisting limiter 8 along the formed steel cage main reinforcement, and use bolts to connect to the end plate 11 of the steel cage hoisting shaping limiter 8 to fasten the four-side limiters to ensure that the main reinforcement does not deviate during the hoisting process, and set internal supports in the steel cage;

[0053] e. Remove the side panels and top panel, and lift the steel cage: remove the bolts on the fixed plate 12 connecting the detachable limiting side panel 2 and the fixed limiting bottom panel 4, remove the bolts connecting the detachable limiting side panel 2 and the detachable limiting top panel 1, rotate the rotating shaft 6 on the detachable limiting side panel 2 to lay down the detachable limiting side panel 2, and then lift the steel cage.

[0054] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A polygonal cross-section bridge pier reinforcement cage integral hoisting and tying jig, characterized in that: The invention comprises a fixed limiting bottom plate (4), a detachable limiting side plate (2) and a detachable limiting top plate (1), wherein the fixed limiting bottom plate (4) is divided into a transverse limiting bottom plate and a longitudinal limiting bottom plate, round steel short heads (5) are arranged on the transverse limiting bottom plate at a designed spacing of main reinforcement bars of the steel cage, and round steel short heads (5) are arranged on the longitudinal limiting bottom plate at a designed spacing of stirrup bars of the steel cage, one end of the detachable limiting side plate (2) is detachably connected to both sides of the fixed limiting bottom plate (4), a thin steel pipe (3) is arranged on the plate surface of the detachable limiting side plate (2) at a designed spacing of vertical main reinforcement bars of the steel cage, the other end of the detachable limiting side plate (2) is bolted to both ends of the detachable limiting top plate (1), and the outer plate surface of the detachable limiting top plate (1) is arranged with round steel short heads (5) at a designed spacing of main reinforcement bars of the steel cage; the shape of the detachable limiting side plate (2) is the same as the shape of the side surface of the bridge pier; It also includes a steel cage hoisting and shaping stopper (8); the steel cage hoisting and shaping stopper (8) is a steel plate, and a wall surface of the steel plate in contact with the steel cage is cut with a slot (10) for engaging with the main reinforcement, and end plates (11) for connecting are provided at both ends of the steel plate, and bolt holes (9) are opened on the end plates (11); The steel cage hoisting shaping stopper (8) is divided into two shapes, one of which has an inner side surface that is a bent surface with the same shape as the detachable limiting side plate (2), and the end plates (11) of this stopper are fixed at both ends of the steel cage hoisting shaping stopper (8), and the other has an inner side surface that is a plane with a slot (10) provided, and the end plates (11) of this stopper are fixed at both ends of the inner side surface of the steel cage hoisting shaping stopper (8).

2. The overall hoisting and tying jig for the reinforcement cage of a bridge pier with a polygonal cross section according to claim 1 is characterized in that: A round steel bar is passed through the thin steel tube (3).

3. The overall hoisting and tying jig for the reinforcement cage of a bridge pier with a polygonal cross section according to claim 1 is characterized in that: A rotating shaft (6) is provided at one end of the detachable limiting side plate (2) connected to the fixed limiting bottom plate (4); a rotating shaft plug-in ear plate is fixed to the fixed limiting bottom plate (4); the detachable limiting side plate (2) is inserted into the ear plate through the rotating shaft (6) and is rotatably connected to the fixed limiting bottom plate (4).

4. The overall hoisting and tying jig for the reinforcement cage of a bridge pier with a polygonal cross section according to claim 3 is characterized in that: The detachable limiting side plate (2) is connected with an oblique support (7) for preventing the side plate from shaking.

5. The overall hoisting and tying jig for the reinforcement cage of a bridge pier with a polygonal cross section according to claim 4 is characterized in that: A fixing plate (12) is provided at a position on the fixed limiting bottom plate (4) where it is connected to the detachable limiting side plate (2). Bolts are provided on the fixing plate (12) and the fixing plate (12) is locked and fixed to the detachable limiting side plate (2) via the bolts.

6. The method for using the polygonal cross-section bridge pier reinforcement cage integral hoisting and tying jig according to claim 5 is characterized in that: The steps are: a. Assemble the steel cage binding jig: Assemble the steel cage binding jig into shape according to the design; b. Placement of steel cage stirrups: Arrange and fix the steel cage stirrups in sequence according to the short round steel heads (5) of the longitudinal limit bottom plate of the fixed limit bottom plate (4); c. Place the main reinforcement of the steel cage: arrange the main reinforcement in sequence according to the transverse limiting bottom plate of the fixed limiting bottom plate (4) and the short head of the round steel (5) of the removable limiting top plate (1), and tie and fix them with stirrups; d. Install the steel cage hoisting shaping stopper: embed the steel cage hoisting stopper (8) along the main reinforcement of the steel cage, and use bolts to connect the end plate (11) of the steel cage hoisting shaping stopper (8) to fasten the steel cage hoisting shaping stopper (8) to ensure that the main reinforcement does not deviate during the hoisting process, and set internal support in the steel cage; e. Remove the side panels and top panel and lift the steel cage: remove the bolts on the fixed panel (12) connecting the removable limiting side panel (2) and the fixed limiting bottom panel (4), remove the bolts connecting the removable limiting side panel (2) and the removable limiting top panel (1), rotate the rotating shaft (6) on the removable limiting side panel (2) to lay down the removable limiting side panel (2), and then lift the steel cage.

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