CN111691313B - Bridge construction is with combination support of turning - Google Patents

Abstract

The invention discloses a combined swivel bearing for bridge construction. The upper edge of a circular support base plate is fixed with a plurality of circular side support formwork stacked in sequence from bottom to top, and the circular side support formwork is fixed by The bolts are fixedly connected with the circular support base plate, the circular side support formwork is fixedly connected by fixing bolts, the upper surface of the circular support base plate is fixed with a number of limit guide posts arranged in the circumferential direction, and the limit guide posts are respectively sleeved There is a rigid spring, a limit support circular plate is installed on the limit guide column, the upper end of the limit guide column is respectively provided with a clip-through hole, and the clip-through hole is respectively clipped and fixed with longitudinal steel bars arranged in the vertical direction. A number of annular steel bars are welded and fixed at equal distances from bottom to top between the steel bars. The combined swivel bearing has the advantages of convenient installation, high stability, good seismic buffering effect, easy disassembly after the use of the formwork, and can be poured at different heights as required.

Description

A combined swivel bearing for bridge construction

technical field

The invention relates to the field of bridge swivel bearings, in particular to a combined swivel bearing for bridge construction.

Background technique

With the development of our country's society and economy and the upsurge of a new round of infrastructure construction, more bridges need to be built across existing roads, railways, rivers, ditches, etc. It has the advantages of small impact and low security risk, and has been widely used.

The construction of bridge swivel method can avoid the impact on nearby transportation lines to the greatest extent, and can also overcome the problem of erecting long-span bridges in high mountains and canyons, rivers with rapid water depth or frequent navigation of ships, especially in the construction of urban areas in heavy traffic areas. For overpasses and railway overpasses, the advantages of the bridge swivel method are more obvious. In recent years, bridge swivel construction technology is more and more favored by bridge designers because of its economical, convenient and reliable characteristics.

The current bridge construction swivel bearings have the problems of inconvenient combined installation, poor stability, unsatisfactory seismic buffering effect, difficult disassembly of the formwork after use, and inability to cast swivel bearings of different heights as required.

SUMMARY OF THE INVENTION

In order to solve the problems of inconvenient combined installation, poor stability performance, unsatisfactory anti-seismic buffering effect of the existing bridge construction swivel bearings, difficult disassembly of the formwork after use, and inability to pour swivel bearings of different heights as required, the invention provides a A combined swivel bearing for bridge construction.

The invention provides a combined swivel bearing for bridge construction, comprising a circular support base plate, and a plurality of circular side support templates stacked in sequence from bottom to top are fixed on the upper edge of the circular support base plate. The circular side support formwork is fixedly connected to the circular support base plate through fixing bolts, the circular side support formwork is fixedly connected by fixing bolts, and the upper surface of the circular support base plate is fixed with several Limiting guide pillars arranged along the circumferential direction, rigid springs are respectively sleeved on the limiting guide pillars, a limiting supporting circular plate is installed on the limiting guide pillars, and the upper ends of the limiting guide pillars are respectively provided with clamping connections Through holes, longitudinal steel bars arranged in the vertical direction are respectively clamped and fixed on the through holes, and a plurality of annular steel bars are welded and fixed at an equal distance from bottom to top in sequence between the longitudinal steel bars.

Preferably, the circular side support formwork includes a first semicircular side formwork, a second semicircular formwork, a limit groove, a tightening wire tie, a first connecting block, a second connecting block and a connecting block. Studs, first connecting blocks are respectively fixed at both ends of the first semicircular side template, second connecting blocks are respectively fixed at both ends of the second semicircular template, and the first connecting blocks are connected to the The second connecting block is fixedly connected by connecting studs, and the side edges of the first semicircular side formwork and the side edges of the second semicircular formwork are respectively fixed with a number of limiting convex grooves along the circumferential direction, The two upper and lower limit protruding grooves are fixedly connected by tightening steel wire ties. Realize the circular side support formwork that can be disassembled and assembled at the boundary.

Preferably, the upper edge and the lower edge of the first semicircular side template are respectively provided with first limiting edges. It is convenient for the butt installation of the upper and lower circular side support formwork.

Preferably, the upper edge and the lower edge of the second semicircular template are respectively provided with second limiting edges. It is convenient for the butt installation of the upper and lower circular side support formwork.

Preferably, the limiting convex groove is provided with a connecting hole for the fastening wire tie to pass through. To achieve the stability of the assembly between two adjacent circular side support formwork.

Preferably, the first limiting edge and the second limiting edge are respectively provided with a plurality of second bolt mounting holes along the circumferential direction for the fixing bolts to pass through and fix. The convenient and fixed connection of the first semicircular side formwork and the second semicircular formwork in the longitudinal direction is realized.

Preferably, the limiting guide post is located in the inner circle of the circular side support formwork. Realize the effect of formwork support on circular side support formwork.

Preferably, the upper surface of the limit support circular plate is provided with limit through holes for one-to-one correspondence with the limit guide posts. Realize convenient one-to-one docking installation.

Preferably, the lower end of the longitudinal steel bar is fixed with a limit hook that is connected to the clip-through hole. Realize convenient installation and fixation.

Preferably, the upper edge of the circular support base plate is provided with first bolt mounting holes for passing through and fixing the fixing bolts which correspond to the second bolt mounting holes one-to-one along the circumferential direction.

The beneficial effects of the present invention are:

1. When assembling the combined swivel bearing for bridge construction, first place the circular support base plate horizontally, and then take the first semicircular side formwork and the second semicircular formwork through the first connecting block, the second connecting block and the The connecting studs are connected and combined to form a circular side support formwork. The circular side support formwork is installed on the circular support base plate through fixing bolts, and then a rigid spring is placed on the limit guide post, and then the limit guide is installed. Install the limit support circular plate on the column, then install the steel frame composed of longitudinal steel bars and annular steel bars at the clip-through holes on the limit guide column, and finally install multiple corresponding circular side support templates as required , making the combined installation more convenient.

2. The combined swivel support for bridge construction is fixed on the upper surface of the circular support base plate by fixing a number of limit guide posts arranged in the circumferential direction. The limited support circular plate is installed on the column, which can play an anti-seismic buffering effect on the cast swivel bearing, and multiple groups are arranged in strict circumferential direction to ensure the anti-seismic buffering effect and stability.

3. The combined swivel support for bridge construction is provided with clip-through holes through the upper ends of the limit guide posts, wherein the clip-through holes are respectively clipped and fixed with longitudinal steel bars arranged in the vertical direction, and the longitudinal steel bars are respectively clamped and fixed. A number of annular steel bars are welded and fixed in sequence from bottom to top in order to ensure a connection as a whole and improve the stability of the cast swivel support.

4. The combined swivel bearing for bridge construction is provided with a circular side support formwork, wherein the circular side support formwork includes a first semicircular side formwork and a second semicircular formwork, and in the first half The two ends of the circular side formwork are respectively fixed with a first connecting block, and the two ends of the second semi-circular formwork are respectively fixed with a second connecting block, wherein the first connecting block and the second connecting block are fixedly connected by connecting studs. After the casting swivel support is formed, the first semicircular side formwork and the second semicircular formwork can be easily disassembled for the next cycle; Several limiting convex grooves are respectively fixed on the side of the circular formwork along the circumferential direction, and the two limiting convex grooves located on the upper and lower sides are fixedly connected by tightening steel wire ties to ensure the overall stability of the combined formwork.

5. In the combined swivel support for bridge construction, the upper and lower edges of the first semicircular side formwork are respectively provided with a first limit edge, and the upper and lower edges of the second semicircular formwork are respectively provided with a second limit edge. Two limit edges, the first limit edge and the second limit edge are respectively provided with a number of second bolt mounting holes in the circumferential direction for fixing bolts to pass through and fix, through the second bolt mounting holes insert suitable bolts to tighten Firmware, the circular side support formwork can be superimposed and extended in the longitudinal direction, so that the swivel supports of different heights can be poured according to the needs.

Other advantages, objects and features of the present invention will be set forth in the description which follows, to the extent that will be apparent to those skilled in the art based on a study of the following, or may be learned from is taught in the practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the following description.

Description of drawings

1 is a schematic diagram of a combined structure of a combined swivel bearing for bridge construction provided by the present invention;

2 is a schematic structural diagram of a circular side support formwork in a combined swivel bearing for bridge construction provided by the present invention;

3 is a first structural schematic diagram of a circular support base plate, a limit support circular plate and a circular side support formwork in a combined swivel bearing for bridge construction provided by the present invention;

4 is a second structural schematic diagram of a circular support base plate, a limit support circular plate and a circular side support formwork in a combined swivel bearing for bridge construction provided by the present invention;

5 is a third structural schematic diagram of a circular support base plate, a limit support circular plate and a circular side support formwork in a composite swivel bearing for bridge construction provided by the present invention;

6 is a schematic structural diagram of a circular support base plate in a composite swivel bearing for bridge construction provided by the present invention;

FIG. 7 is a schematic structural diagram of longitudinal steel bars in a composite swivel bearing for bridge construction provided by the present invention.

The symbols in the drawings are as follows: 1-circular support base plate; 2-limiting guide post; 3-limiting support circular plate; 4-card connection hole; 5-circular side support template; 51-first semicircle Form side template; 511-first limit edge; 52-second semicircular template; 521-second limit edge; 53-limit groove; 54-connection hole; 55-fastening wire rope; 56 -First connecting block; 57-Second connecting block; 58-Connecting stud; 59-Second bolt mounting hole; 6-Fixing bolt; 7-Longitudinal steel bar; 8-Ring steel bar; bit through hole; 11- the first bolt mounting hole; 12- limit hook.

Detailed ways

The following is further described in detail by specific embodiments:

A combined swivel bearing for bridge construction as shown in Figures 1 to 7 includes a circular support base plate 1, and the upper edge of the circular support base plate 1 is fixed with two or more circles stacked in sequence from bottom to top The circular side support formwork 5 is fixedly connected to the circular support base plate 1 through fixing bolts 6, and the circular side support formwork 5 is fixedly connected by fixing bolts 6, and the circular support base plate 1 A number of limit guide posts 2 arranged along the circumferential direction are fixed on the upper surface of the upper surface, rigid springs 9 are respectively sleeved on the limit guide posts 2, and a limit support circular plate 3 is installed on the limit guide posts 2, and the limit guide posts 2 The upper ends of the steel bars are respectively provided with snap-through holes 4, and the snap-through holes 4 are respectively clipped and fixed with longitudinal steel bars 7 arranged in the vertical direction, and a number of annular bars are welded and fixed in sequence from bottom to top. Rebar 8.

In this embodiment, the circular side support formwork 5 includes a first semicircular side formwork 51, a second semicircular formwork 52, a limiting convex groove 53, a tightening wire tie 55, a first connecting block 56, a Two connecting blocks 57 and connecting studs 58, first connecting blocks 56 are respectively fixed on both ends of the first semicircular side formwork 51, second connecting blocks 57 are fixed on both ends of the second semicircular formwork 52, respectively. A connecting block 56 and the second connecting block 57 are fixedly connected by connecting studs 58, and four limiters are respectively fixed on the side of the first semicircular side template 51 and the side of the second semicircular template 52 in the circumferential direction. The position convex groove 53 is fixedly connected by tightening the wire tie 55 between the upper and lower limit convex grooves 53 . Through the cooperation of the connecting studs 58 and the limiting convex grooves 53, the detachable boundary disassembly and assembly of the circular side support formwork 5 is realized.

In this embodiment, the upper edge and the lower edge of the first semicircular side formwork 51 are respectively provided with first limit edges 511 , which facilitates the butt installation of the upper and lower circular side support formwork 5 .

In this embodiment, the upper edge and the lower edge of the second semicircular formwork 52 are respectively provided with second limiting edges 521 , so as to facilitate the butt installation of the upper and lower circular side support formwork 5 .

In this embodiment, the limiting convex groove 53 is provided with a connecting hole 54 through which the fastening wire tie 55 passes, so as to realize the assembly stability between the two adjacent circular side support templates 5 .

In this embodiment, the first limiting side 511 and the second limiting side 521 are respectively provided with a plurality of second bolt mounting holes 59 along the circumferential direction for the fixing bolts 6 to pass through and fix. The first semicircular side formwork 51 and the second semicircular formwork 52 are conveniently and fixedly connected in the longitudinal direction by inserting suitable bolt fasteners into the second bolt mounting holes 59 .

In this embodiment, the limiting guide post 2 is located in the inner circle of the circular side support formwork 5 . Realize the effect of 5 support on the circular side support formwork.

In this embodiment, the upper surface of the limit support circular plate 3 is provided with limit through holes 10 for one-to-one correspondence with the limit guide posts 2 . It realizes the convenient one-to-one docking installation of the limit guide posts 2 .

In the present embodiment, the lower end of the longitudinal steel bar 7 is fixed with a limit hook 12 which is connected with the clamping hole 4 by clamping. The convenient installation and fixation of the longitudinal reinforcement bars 7 is realized.

In this embodiment, the upper edge of the circular support base plate 1 is provided with first bolt installation holes 11 corresponding to the second bolt installation holes 59 one-to-one in the circumferential direction for the fixing bolts 6 to pass through and fix.

When assembling the combined swivel bearing for bridge construction, first place the circular support base plate 1 horizontally, and then take the first semicircular side formwork 51 and the second semicircular formwork 52 through the first connecting block 56 and the second connecting block 56. The block 57 and the connecting studs 58 are docked to form a circular side support formwork 5, and the circular side support formwork 5 is installed on the circular support base plate 1 through the fixing bolts 6, and then sleeved on the limit guide posts 2 respectively. A rigid spring 9, and then install the limit support circular plate 3 on the limit guide column 2, and then install the steel frame composed of the longitudinal steel bar 7 and the annular steel bar 8 at the clip through hole 4 on the limit guide column 2, Finally, a plurality of corresponding circular side support templates 5 are installed and stacked as required, so that the combined installation is convenient.

The combined swivel bearing for bridge construction is fixed on the upper surface of the circular support base plate 1 by fixing a number of limit guide posts 2 arranged in the circumferential direction, and rigid springs 9 are respectively sleeved on the limit guide posts 2, wherein the limit The position-limiting support circular plate 3 is installed on the position guide column 2, which can play an anti-seismic buffering effect on the cast swivel bearing, and multiple groups are arranged along the circumferential direction to ensure the anti-seismic buffering effect and stability.

The combined swivel support for bridge construction is provided with clip-through holes 4 through the upper ends of the limit guide posts 2, and longitudinal steel bars 7 arranged in the vertical direction are clipped and fixed on the clip-through holes 4 respectively. In addition, a plurality of annular steel bars 8 are welded and fixed at equal distances from bottom to top between the longitudinal steel bars 7, which ensures a connection as a whole and improves the stability of the cast swivel support.

The combined swivel bearing for bridge construction is provided with a circular side support formwork 5, wherein the circular side support formwork 5 includes a first semicircular side formwork 51 and a second semicircular formwork 52, and in the first The two ends of the semicircular side formwork 51 are respectively fixed with first connecting blocks 56, and the two ends of the second semicircular formwork 52 are respectively fixed with second connecting blocks 57, wherein the first connecting blocks 56 and the second connecting blocks 57 are respectively fixed. The connecting block 57 is fixedly connected by the connecting stud 58. After the casting swivel support is completed, the first semicircular side formwork 51 and the second semicircular formwork 52 can be easily disassembled for the next cycle; A plurality of limiting convex grooves 53 are respectively fixed on the side of the first semicircular side template 51 and the side of the second semicircular template 52 along the circumferential direction, and pass between the upper and lower limiting convex grooves 53 Tighten the steel wire tie 55 for a fixed connection to ensure the overall stability of the combined formwork. The combined swivel support for bridge construction is provided with a first limit edge 511 respectively by setting the upper edge and the lower edge of the first semicircular side formwork 51 ; and on the upper edge of the second semicircular formwork 52 A second limit edge 521 is respectively provided with the lower edge, wherein the first limit edge 511 and the second limit edge 521 are respectively provided with a number of second bolt mounting holes in the circumferential direction for the fixing bolt 6 to pass through and fix. 59, the circular side support formwork 5 can be superimposed and extended in the longitudinal direction, so that swivel supports of different heights can be poured according to requirements.

The above descriptions are only embodiments of the present invention, and common knowledge such as well-known specific structures and characteristics in the solution are not described too much here. It should be pointed out that for those skilled in the art, on the premise of not departing from the structure of the present invention, several modifications and improvements can also be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effects and applicability of the present invention.

Claims (4)

1. A combined swivel bearing for bridge construction, characterized in that it comprises a circular support base plate (1), and the upper edge of the circular support base plate (1) is fixed with a number of circles stacked in sequence from bottom to top A side support formwork (5), the circular side support formwork (5) comprises a first semicircular side formwork (51), a second semicircular formwork (52), a limiting convex groove (53), Fasten the steel wire tie (55), the first connecting block (56), the second connecting block (57) and the connecting stud (58), and the two ends of the first semicircular side template (51) are respectively fixed with a first A connecting block (56), a second connecting block (57) is respectively fixed at both ends of the second semicircular template (52), and the first connecting block (56) and the second connecting block (57) pass through connecting studs (58) ) fixed connection, the side edge of the first semicircular side formwork (51) and the side edge of the second semicircular formwork (52) are respectively fixed with a number of limiting convex grooves (53) in the circumferential direction, located on the upper and lower sides. The two limiting convex grooves (53) are fixedly connected by tightening steel wire ties (55), and the circular side support formwork (5) is fixedly connected to the circular support base plate (1) by fixing bolts (6) , the circular side support formwork (5) is fixedly connected by fixing bolts (6), and the upper surface of the circular support bottom plate (1) is fixed with a number of limit guide posts (2) arranged along the circumferential direction, the limit Rigid springs (9) are respectively sleeved on the guide pillars (2), a limit support circular plate (3) is installed on the limit guide pillars (2), and the upper ends of the limit guide pillars (2) are respectively provided with clamping through holes ( 4), longitudinal reinforcement bars (7) arranged in the vertical direction are respectively clamped and fixed on the clamping holes (4), and a number of annular reinforcement bars (7) are welded and fixed at equal distances from bottom to top. 8), the upper and lower edges of the first semicircular side template (51) are respectively provided with first limiting edges (511), and the upper and lower edges of the second semicircular template (52) A second limit edge (521) is respectively provided, the limit guide column (2) is located in the inner ring of the circular side support template (5), and the upper surface of the limit support circular plate (3) There are limit through holes (10) for one-to-one correspondence with the limit guide posts (2), and the lower ends of the longitudinal reinforcement bars (7) are fixed with limit hooks that are connected with the clip through holes (4). (12); When assembling the combined swivel bearing for bridge construction, first place the circular support base plate (1) horizontally, and then take the first semicircular side formwork (51) and the second semicircular formwork (52) The first connecting block (56), the second connecting block (57) and the connecting studs (58) are butted together to form a circular side support formwork (5), and the circular side support formwork (5) is passed through the fixing bolts ( 6) Install it on the circular support base plate (1), then put a rigid spring (9) on the limit guide column (2), and then install the limit support circular plate ( 3), then install a steel frame consisting of longitudinal steel bars (7) and annular steel bars (8) at the clamping holes (4) on the limit guide post (2), and finally install a plurality of corresponding round side branch The protective formwork (5) enables the circular side support formwork (5) to be superimposed and extended in the longitudinal direction, and the swivel supports of different heights can be poured as required. 2 . The combined swivel bearing for bridge construction according to claim 1 , wherein the limiting convex groove ( 53 ) is provided with a connecting hole through which the fastening wire rope ( 55 ) passes. 3 . (54). 3 . The combined swivel bearing for bridge construction according to claim 1 , wherein the first limiting edge ( 511 ) and the second limiting edge ( 521 ) are respectively provided along the circumferential direction. 4 . There are several second bolt mounting holes (59) for fixing bolts (6) to pass through. 4. A combined swivel bearing for bridge construction according to claim 3, characterized in that the upper edge of the circular support base plate (1) is provided with a second bolt mounting hole (59) along the circumferential direction The one-to-one corresponding fixing bolts (6) pass through the fixing first bolt mounting holes (11).

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