Bridge deck crane combined hoisting construction device for closure section of reinforced concrete superposed beam cable-stayed bridge

Abstract

The invention relates to a bridge deck crane combined hoisting construction device for a closure section of a reinforced concrete superposed beam cable-stayed bridge. The device comprises load distribution beams on the two sides, fixing devices and hoisting systems, the load distribution beams are mounted on the fixing devices, the fixing devices are mounted on bridge deck cranes on the two sides,and the hoisting systems are mounted on the load distribution beams; and a longitudinal adjusting device is arranged between each hoisting system and the corresponding load distribution beam, the longitudinal position of the hoisting systems is accurately adjusted through the longitudinal adjusting devices, and it can be guaranteed that the hoisting point position is accurate. The device is suitable for the working condition that the closure section is small in length and direct combined hoisting by the bridge deck cranes on the two sides cannot be conducted, the device is light in structureand safe and reliable in construction process, it can be guaranteed that loads on the two sides of a bridge are basically kept consistent in the closure section hoisting process, the hoisting in-placeprecision can be guaranteed, meanwhile, the problem of cable force adjustment caused by unbalanced loads on the two sides can be reduced, the construction precision is improved, and the constructioncost is saved.

Description

technical field [0001] The invention relates to a bridge deck crane hoisting construction device, in particular to a bridge deck crane hoisting construction device for the closing section of a steel-concrete composite girder cable-stayed bridge. Background technique [0002] For the hoisting of the closing section of the steel-concrete composite girder cable-stayed bridge, if the section length of the closing section is sufficient, the bridge deck cranes on both sides can be directly combined for lifting. For bridges with short closure sections, since they cannot be lifted directly, they are usually hoisted by single-side deck cranes, resulting in large load deviations at the ports of the closure section of the bridge, resulting in inconsistent elevations of the closure section. In order to solve this problem Generally, the elevation of the bridge is adjusted by adjusting the cable force and the side weight of the non-deck crane hoisting, so as to keep the elevation of the t...

AI Technical Summary

Problems solved by technology

The implementation of this method is cumbersome, the construction efficiency is low, and it cannot ensure the high precision of the closing mouth. At the same time, it will cause a large deviation of the cable force at both ends of the closing mouth, which will affect the future cable adjustment of the whole bridge.

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