Overall track erection push system and erection push process of prefabricated highway steel bridge

Abstract

The invention relates to an assembled road steel bridge overall track erection and push system and process. The system is overall located in a flat field paved with concrete cushion blocks, steel rails are fixed to the concrete cushion blocks, two parallel tracks are formed, a horizontal rolling piece supporting frame with horizontal rolling pieces on the top is arranged on the same straight line as the tracks in the field and supports a girder of a steel bridge, traction wagons capable of moving along the steel rails are arranged on the steel rails, support the steel bridge, are controlled by an electric control cabinet to push the steel bridge to move forwards and have independent drive mechanisms, and the supporting center of the traction wagons is right the center of gravity of the steel bridge. The steel bridge can continue moving forwards along the tracks when driven by the traction wagons, in this way, assembling of the steel bridge can be directly competed on the land in a short time without the need of erecting a supporting frame or a concrete supporting tower in a riverway; furthermore, safety is high when the steel bridge is assembled on the land, and the assembled road steel bridge overall track erection and push system is particularly suitable for breaking through rescue roads during emergency rescue; it is not needed that supporting frames are fixed in riverways, erection efficiency is high, erection is convenient to carry out, and influence caused by the environment is small.

Description

technical field [0001] The invention relates to the field of bridge erection, and relates to an erection system and an erection process of an assembled highway steel bridge, in particular to an erection and push system and an erection push process for the overall track erection of an assembled highway steel bridge. Background technique [0002] The prefabricated highway steel bridge is a standard bridge that can be disassembled and can be erected quickly. be widely used. Especially in the critical moment of emergency rescue, when time becomes the key factor, the prefabricated highway steel bridge plays a very important role. [0003] With the rapid development of my country's highway construction, especially the comprehensive construction of national expressways, long-span (single-span ≥ 70m) highway bridges are becoming more and more popular. These bridges can be damaged due to natural disasters such as earthquakes, flash floods, mudslides, or people's daily traffic activ...

AI Technical Summary

Problems solved by technology

[0007] The present invention solves the defects of cumbersome support erection process and long bridge erection time of existing pull bridges, and provides an assembly-type road steel bridge overall track erection push system, the main girder erection process is completed on land, and the main girder erection process is completed on the traction trolley The main girder is directly assembled, and the steel bridge is supported by the rails, which avoids erecting the support frame in the river channel. After the erection is completed, it is pushed into place by the traction trolley. The main girder push process is convenient and fast, which shortens the erection time

[0009] The present invention also solves the defects of the existing prefabricated highway steel bridge push system and the small-section supporting steel bridge, which cause the center of gravity of the steel bridge to move forward and cause the front end to tilt downward, which affects the stability of the steel bridge erection. Provides a prefabricated highway steel bridge overall track erection and push system. There are two rows of active trolleys and two rows of passive trolleys on the track. The active traction trolleys are always at the center of gravity of the steel bridge and keep synchronizing with the center of gravity of the steel bridge as the steel bridge moves. The speed of movement ensures the stability of the steel bridge when it is moved and erected

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