Method for pushing frame bridge

Abstract

The invention discloses a method for pushing a frame bridge. According to the method, a box body is pushed into one side of an existing railway at the position of a box body to be pushed, a plurality of box bodies are pushed into the other side of the existing railway, and therefore butt joint can be achieved. According to the method for pushing the frame bridge, a relaying method is combined with an abutting method under the condition of not affecting the normal operation of the railway, the problem that the space of a construction site is narrow and small is solved, a protruding head is prevented from occurring to the next box body through a steel plate arranged at the rear end of a base plate of the last box body in the pushing process of multiple box bodies, the faulting of slab ends is made not to occur to the box bodies in the butt joint, and therefore the operation security of the railway is guaranteed, the quality of the frame bridge is guaranteed, and reference is provided for the construction of other frame bridges in future.

Description

technical field [0001] The invention belongs to the technical field of railway construction, in particular to a frame bridge jacking method. Background technique [0002] With the rapid development of urban construction, the traffic volume is also increasing. When the existing railway crosses the highway, it is common practice to build a frame bridge under the existing railway. When some frame bridges cannot meet the traffic requirements due to their long service life or too small internal width, it is necessary to replace the old frame bridges with new ones. Currently, the commonly used replacement method is the jacking method. For frame bridges with a jacking length of more than 30m, the relay method or the jacking method is usually used. The foundation pit, and then prefabricated in the foundation pit the multi-section box body to be jacked to form the new frame bridge, and then dismantled the rear part of the old frame bridge structure close to the foundation pit, and ...

AI Technical Summary

Problems solved by technology

But, the problem that above-mentioned relay method exists is: because some old frame bridges are in the city center, surrounding buildings all can not be removed, so either side of existing line all does not have the excavation that can accommodate a plurality of boxes. The site, that is, the site space is narrow, so it is impossible to simply use the relay method for construction

The disadvantage of the jacking method is that it is limited to jacking one section of box on each side, so it is not suitable for frame bridges composed of multi-section boxes.

Images