Bridge girder erection machine used for erecting precast beams and bridge girder erection method thereof

Abstract

The invention discloses a bridge girder erection machine used for erecting precast beams and a bridge girder erection method thereof. The bridge girder erection machine comprises a mechanical arm which is symmetrically designed in the longitudinal direction and in the horizontal direction, and the mechanical arms are of a double-box-beam structure. A front assistant supporting leg is installed atthe front end of the mechanical arm, a jack-up supporting leg is arranged at the rear end of the mechanical arm, a front supporting leg and a rear supporting leg which are capable of walking in the longitudinal direction are arranged in the middle of the mechanical arm, and a bearing support leg is arranged on the rear side of the rear supporting leg. The method that bridge girder erection is erected by using the bridge girder erection machine is very suitable for quick erection of urban roads, urban light rails, subway routes and other overground overpasses in the peri-urban areas and the places where the construction conditions are complex, the traffic pressure of a construction environment is high; by means of the bridge girder erection machine and the bridge girder erection method, itwill be certain to drive the construction of elevated highways, the urban light rails and subway viaducts in Chinese to be developed to the environment-friendly, industrialized and standardized construction, and the economic and social benefits will be increasingly obvious.

Description

technical field [0001] The invention belongs to the technical field of prefabricated bridge construction, in particular to a bridge erecting machine and a bridge erecting method for erecting fully prefabricated beams. Background technique [0002] With the acceleration of the pace of urbanization in my country, in order to save land resources, there are more and more viaducts on the ground such as urban roads, urban light rail and subway lines. It is different from the previous viaducts in that most of these viaducts appear around the city, the construction conditions are complicated, and the traffic pressure in the construction environment is high, which puts forward higher requirements for the adaptability of the bridge erecting machine. [0003] The construction technology of the road bridge erecting machine commonly used at this stage is mature and widely used, but its shortcomings are becoming more and more obvious with the development of the working environment: [00...

AI Technical Summary

Problems solved by technology

[0004] 1. Existing bridge pier columns and cover beams are generally installed on-site by hoisting and binding steel bars, on-site installation of formwork, and on-site pouring and maintenance. The construction is greatly affected by the natural environment, quality control is difficult, and the surrounding environment is seriously polluted

[0005] 2. The existing bridge erecting machines usually cannot realize reverse construction by themselves, and generally require the auxiliary disassembly and assembly of large-tonnage cranes, and even the disassembly and assembly of the whole machine can be realized;

[0006] 3. Many of the existing bridge erecting machines require laying longitudinal rails on the beam surface during the passage of the bridge, which is not only unfavorable to the force of the bridge that has been erected, but also affects the construction efficiency;

[0007] 4. When each leg of the existing bridge erecting machine passes through the hole, either the wheel-rail bridge deck travels or the suspension wheel type. Among these two methods, the former construction of the bridge deck has a large workload and low efficiency, and affects the force of the bridge already erected. ; In the latter case, the outriggers may drop off or run unsmoothly many times in the process of practical application, resulting in great losses

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