CN219195677U

CN219195677U - Curved beam pushing device

Info

Publication number: CN219195677U
Application number: CN202223236401.6U
Authority: CN
Inventors: 史明霞; 张俊; 侯旭海; 李坚; 茆瑞; 张擎; 吴为民; 郑修龙; 杨荣福; 胡琦
Original assignee: Suqian Transportation Industry Group Co ltd; CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd; CCCC SHEC Fourth Engineering Co Ltd
Current assignee: Suqian Transportation Industry Group Co ltd; CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd; CCCC SHEC Fourth Engineering Co Ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-06-16
Anticipated expiration: 2032-12-05

Abstract

The curve beam pushing device comprises pushing equipment, wherein the pushing equipment is arranged in a frame structure, and a cross beam is arranged at the top of the pushing equipment; the frame structure comprises a front load conversion reaction seat and a rear load conversion reaction seat, wherein the front load conversion reaction seat and the rear load conversion reaction seat are fixedly connected through a connecting piece, and the pushing equipment is arranged between the front load conversion reaction seat and the rear load conversion reaction seat. Through the structure, the deflection of the curve beam can be matched in the pushing process, the curve beam web is always stressed in the range of the pushing device in the curve section pushing construction process, the change of the web position in the curve steel box beam pushing process can be adapted, the function of automatic deviation correction after the design mileage pushing is finished is realized, the integral structure is simplified, the control difficulty is reduced, and the construction efficiency is high.

Description

Curved beam pushing device

Technical Field

The utility model relates to the technical field of bridge foundation construction, in particular to a curved beam pushing device.

Background

The curved beam is frequently constructed by adopting a hoisting method, and when a ramp or a main beam spans an existing highway or railway, if hoisting equipment is adopted to hoist a beam structure below a bridge under construction, the traffic is adversely affected. The walking type pushing construction method is a pushing construction technology for realizing the movement or adjustment of the spatial position of the beam body of the common and complex spatial structure, and the pushing construction method is widely applied to bridge construction due to the advantages of small influence on the existing line, simple and light implement equipment, no need of large-scale lifting equipment and the like.

Aiming at a curved bridge, the existing pushing construction method is usually carried out along the bridge direction pushing with correction, for example, the patent number is CN109267499A, which discloses an utility model patent named as a curve bridge walking pushing method, and the patent introduces a curve bridge pushing construction method. When the pushing process is deviated, a deviation rectifying jack is used for carrying out deviation rectifying construction, so that the purpose of accurately controlling the travelling direction of the bridge is achieved. The construction method is relatively clear in purpose, and the curve travelling is divided into two directions. However, the construction method is relatively complicated, continuous correction and adjustment are required in the pushing process, and the pushing construction efficiency is seriously reduced.

In addition, CN 107841957A discloses a large-tonnage steel box girder pushing device, a pushing system and a pushing method, the pushing device comprises a jacking telescopic device, a horizontal pushing telescopic device and a deviation rectifying telescopic device, the jacking device, the horizontal pushing telescopic device and the deviation rectifying telescopic device are all installed on a sliding box body, a sliding base used for sliding is arranged at the bottom of the sliding box body, two ends of the horizontal pushing telescopic device and the deviation rectifying telescopic device, which are relatively telescopic, are respectively connected to the sliding box body and the sliding base, the sliding base and the sliding box body can be relatively moved, three telescopic devices of the steel box girder pushing device are respectively arranged in three directions in a three-dimensional coordinate system, the steel box girder is pushed to move through oil cylinders, and the steel box girder can be integrally and accurately pushed to a designed position, and the deviation rectifying can be realized in the pushing process without the sliding box girder. Such a structure and method are relatively convenient. However, the deviation rectifying range of the structure is limited, and when the position of the steel box girder exceeds the jacking range of the pushing device, the position of the pushing device still needs to be moved.

Disclosure of Invention

The utility model aims to solve the technical problems that: the problem existing in the background art is solved, the curve beam pushing device based on the permanent pier is provided, the deflection of the curve beam can be matched in the pushing process, the curve beam is always supported by the frame structure of the pushing device in the pushing construction process of the curve beam, the position change of the web plate in the pushing process of the curve beam can be adapted, the function of automatic deviation correction after the completion of the pushing of the designed mileage is realized, the integral structure is simplified, the control difficulty is reduced, and the construction efficiency is high.

In order to solve the technical problems, the utility model adopts the following technical scheme: the curve beam pushing device comprises pushing equipment, wherein the pushing equipment is arranged in a frame structure, and a cross beam is arranged at the top of the pushing equipment; the frame structure comprises a front load conversion reaction seat and a rear load conversion reaction seat, wherein the front load conversion reaction seat and the rear load conversion reaction seat are fixedly connected through a connecting piece, and the pushing equipment is arranged between the front load conversion reaction seat and the rear load conversion reaction seat; in the use state, pushing equipment and a frame structure are arranged on two sides of the lower part of the curved beam, the cross beam is arranged on the pushing equipment on two sides, and when the pushing equipment does not act, the height of the upper end face of the frame structure is higher than that of the upper end face of the cross beam.

The front load conversion reaction seat and the rear load conversion reaction seat comprise two upright posts, the tops of the two upright posts are connected with supporting seats, and a plurality of connecting pieces are respectively connected with the upright posts.

One side or two sides of the front load conversion reaction seat and the rear load conversion reaction seat are provided with extension structures for extending the upper end stress surface of the frame structure.

The cross beam is one or more H-shaped steel.

The connecting piece is H-shaped steel.

The utility model has the following beneficial effects:

1. through pushing equipment, frame construction, crossbeam combination, can be in the pushing process, the skew of matching curve roof beam realizes that curve section pushes away in the work progress, and curve roof beam web is forced in the thrustor within range all the time, can adapt to curve roof beam pushes away in-process web position change to realize the design mileage and push away the function of automatic rectifying after accomplishing, overall structure is simplified, and the control degree of difficulty reduces, and the efficiency of construction is high moreover.

2. The frame structure comprises a front load conversion reaction seat and a rear load conversion reaction seat, the front load conversion reaction seat and the rear load conversion reaction seat are fixedly connected through a connecting piece, firm and stable support is provided for the curved beam, and the stability of the pushing equipment during operation is improved.

3. One side or two sides of the front load conversion reaction seat and the rear load conversion reaction seat are provided with extension structures for extending the upper end stress surface of the frame structure, and the extension structures are used for increasing the stress surface of the upper end surface of the frame structure, so that the frame structure can stably support the curve beam.

Drawings

FIG. 1 is a schematic view of the structure of the present utility model in a use state.

Fig. 2 is a schematic diagram of a front view structure of the present utility model.

Fig. 3 is a schematic side view of the present utility model.

Fig. 4 is a schematic side view of the frame structure of the present utility model.

In the figure: the device comprises a curve beam 1, pushing equipment 2, a frame structure 3, a cross beam 4, a front load conversion reaction seat 31, an upright post 311, a supporting seat 312, a rear load conversion reaction seat 32, an extension structure 33 and a connecting piece 34.

Detailed Description

Embodiments of the present utility model will be further described with reference to the accompanying drawings.

Referring to fig. 1-4, a curved beam pushing device comprises a pushing device 2, wherein the pushing device 2 is arranged in a frame structure 3, and a cross beam 4 is arranged at the top of the pushing device 2; the frame structure 3 comprises a front load conversion reaction seat 31 and a rear load conversion reaction seat 32, the front load conversion reaction seat 31 and the rear load conversion reaction seat 32 simultaneously support the curved beam 1, the structure is stable, the front load conversion reaction seat 31 and the rear load conversion reaction seat 32 are fixedly connected through a connecting piece 34, the structural strength of the frame structure 3 is improved, the pushing equipment 2 is arranged between the front load conversion reaction seat 31 and the rear load conversion reaction seat 32, and the stability of the pushing equipment in operation is improved; in the use state, pushing equipment 2 and a frame structure 3 are arranged on two sides of the lower part of the curved beam 1 (curved steel box beam), the cross beam 4 is placed on the pushing equipment 2 on two sides, and when the pushing equipment 2 does not act, the height of the upper end face of the frame structure 3 is higher than that of the upper end face of the cross beam 4. Through the structure, the deflection of the curve beam can be matched in the pushing process, the curve beam web is always stressed in the range of the pushing device in the curve section pushing construction process, the change of the web position in the curve steel box beam pushing process can be adapted, the function of automatic deviation correction after the design mileage pushing is finished is realized, the integral structure is simplified, the control difficulty is reduced, and the construction efficiency is high.

The walking type pushing operation of the curved beam 1 is realized by combining the pushing equipment 2 with the frame structure 3 and the cross beam 4, and in the pushing process, the curved beam 1 is always supported on the pushing device, so that the repeated deviation correction in the pushing process can be greatly reduced, and the operation is smoother. And when the hydraulic oil reaches a designed mileage position, the whole deviation is corrected through the deviation correcting oil cylinder of the pushing equipment 2, so that the process is simplified, the control difficulty is reduced, and the construction efficiency is improved.

The pushing device 2 lifts the cross beam 4 and acts on the web plate of the steel box girder through the cross beam 4. The purpose of this is to: the method can adapt to the change of the web position in the pushing process of the curved steel box girder. Simply stated, the method can adapt to the change of the web plate position of the steel box girder without moving pushing equipment, so that the curve steel box girder is pushed and rectified stably.

Preferably, the pushing device 2 may be a pushing device disclosed in CN 107841957A.

Referring to fig. 4, the front load conversion reaction seat 31 and the rear load conversion reaction seat 32 are welded together by a connecting piece 34, and the cross beam 4 is transversely fixed to the upper end face of the pushing device 2.

Referring to fig. 2, the front load conversion reaction seat 31 and the rear load conversion reaction seat 32 each include two upright posts 311, the top portions of the two upright posts 311 are connected with a supporting seat 312, and the plurality of connecting pieces 34 are respectively connected to the upright posts 311. The frame structure 3 is stable and firm in structure, the upright post 311 and the supporting seat 312 are welded and formed, and the upper end face of the supporting seat 312 is in contact support with the bottom of the supporting curve beam 1.

Referring to fig. 2, one or both sides of the front load conversion reaction seat 31 and the rear load conversion reaction seat 32 are provided with an extension structure 33 for extending the upper end stress surface of the frame structure 3. The extension structure 33 is used for enlarging the stress surface of the upper end surface of the frame structure 3, so that the frame structure 3 can support the curved beam 1 more stably. The upper steel plate of the extension structure 33 is welded with the upper end surface of the supporting seat 312 in a flush way, and the bottom of the upper steel plate is provided with a supporting steel plate which is welded and fixed with the upright post 311; or the steel plate of the upper end surface of the supporting seat 312 extends outwards, and the bottom of the steel plate of the upper end surface is provided with a supporting steel plate which is welded and fixed with the upright post 311.

Specifically, the cross beam 4 is one or more H-section steel. Referring to fig. 3, the cross beam 4 is formed by welding two H-shaped steels, and has higher structural strength. In order to further improve the strength of the cross beam 4, reinforcing plates may be welded to both sides of the H-section steel to reinforce the H-section steel.

Specifically, the connecting member 34 is an H-shaped steel, so that the front load conversion reaction seat 31 and the rear load conversion reaction seat 32 are firmly connected.

The working process and principle of the utility model are as follows:

s1, a preparation stage before pushing: according to the distance between the permanent piers, the pushing devices 2 and the frame structure 3 are respectively arranged and fixed on the permanent piers, the cross beam 4 is transversely fixed on the upper end surfaces of the two pushing devices 2, and the curved beam 1 falls on the upper end surface of the frame structure 3.

S2, a jacking stage: the pushing equipment 2 is lifted, the cross beam 4 is contacted with the curved beam 1, and the curved beam 1, the cross beam 4 and the frame structure 3 are stressed simultaneously.

S3, load conversion stage: the pushing device 2 is continuously lifted until the curved beam 1 is completely separated from the frame structure 3, and then the stress conversion of the load is completed.

S4, pushing: the pushing device 2 pushes the curved beam 1 for one stroke.

S5, load conversion reaction seat stage: the pushing equipment 2 falls down, the curved beam 1 falls on the upper end face of the frame structure 3, and continuously falls down to the position that the curved beam 1 and the cross beam 4 are separated, and load conversion is completed.

S6, retracting the pushing equipment: the pushing oil cylinder of the pushing equipment 2 is retracted, and the cross beam 4 is restored to the initial stage under the action of the pushing equipment 2.

And S2-S6 steps are repeated, and the pushing process of the curve beam 1 with one design mileage is completed.

S7, correcting: the pushing equipment 2 continues to be lifted to the load conversion stage, and the curve beam 1 is automatically rectified in one stroke through the rectification cylinder of the pushing equipment.

S8, equipment falling stage: the pushing device 2 falls to the curve beam 1 and the cross beam 4 to complete separation.

And S7-S8 steps are repeated, so that repeated deviation correction of the curved beam 1 can be completed, and finally the design line shape requirement of the curved beam is met.

Claims

1. Curve roof beam thrustor, including jacking equipment (2), its characterized in that: the pushing device (2) is arranged in the frame structure (3), and the cross beam (4) is arranged at the top of the pushing device (2); the frame structure (3) comprises a front load conversion reaction seat (31) and a rear load conversion reaction seat (32), the front load conversion reaction seat (31) and the rear load conversion reaction seat (32) are fixedly connected through a connecting piece (34), and the pushing equipment (2) is arranged between the front load conversion reaction seat (31) and the rear load conversion reaction seat (32); under the use state, pushing equipment (2) and a frame structure (3) are arranged on two sides of the lower part of the curved beam (1), the cross beam (4) is arranged on the pushing equipment (2) on two sides, and when the pushing equipment (2) does not act, the height of the upper end face of the frame structure (3) is higher than that of the upper end face of the cross beam (4).

2. The curvilinear beam pusher of claim 1, wherein: the front load conversion reaction seat (31) and the rear load conversion reaction seat (32) comprise two upright posts (311), the tops of the two upright posts (311) are connected with supporting seats (312), and a plurality of connecting pieces (34) are respectively connected with the upright posts (311).

3. The curvilinear beam pusher of claim 1, wherein: one side or two sides of the front load conversion reaction seat (31) and the rear load conversion reaction seat (32) are provided with extension structures (33) for extending the upper end stress surface of the frame structure (3).

4. The curvilinear beam pusher of claim 1, wherein: the cross beam (4) is one or more H-shaped steel.

5. The curvilinear beam pusher of claim 1, wherein: the connecting piece (34) is H-shaped steel.