Synchronous lifting system and method for large-span continuous box girder closure

Abstract

The invention discloses a synchronous lifting system and method for large-span continuous box girder closure. The synchronous lifting system for large-span continuous box girder closure comprises a base body, a fixing device and a lifting device. The fixing device is arranged on the base body, and the lifting device is arranged on the fixing device and used for stably lifting the box girder. The lighting lamp comprises a lamp body and a lifting hook device arranged on the lamp body. The lifting hook mechanism further comprises a fixing mechanism connected with the mounting mechanism. First through holes are formed in the two mounting faces, and the fixing mechanism is connected to the first through holes in a penetrating mode. The system has good properties of high strength, high rigidityand high stability. Synchronous lifting is achieved, uniform stress of the box girder structure and the lifting device is guaranteed, the construction speed is high, the efficiency is high, and the navigation closure time of a navigation channel can be shortened to the maximum extent. Entrance and exit and energy consumption during installation of the floating crane are reduced. The problems thatin the prior art, when a floating crane is installed, construction shakes, a box girder is distorted and deformed, and the installation accuracy is not high are solved.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a synchronous lifting system and method for closing large-span continuous box girders. Background technique [0002] At present, the installation of steel structures in the waterway mainly adopts the construction technology of floating crane installation, but this technology needs to set up temporary buttresses in the waterway under the working conditions of the installation of large-span cantilever steel structures, which affects the normal passage of the waterway. Due to the influence of water waves and wind, the ship crane will continue to shake during the construction process, which is likely to cause distortion and deformation of the box girder. At the same time, there are also defects such as low installation accuracy, requiring a lot of fine-tuning work, and too long time for sailing; other such as jacking , bridge erecting machine and other techniques are not suitabl...

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a synchronous lifting system and method for the closing of long-span continuous box girders, so as to solve the problems of construction shaking, distortion of box girders, and low installation accuracy during floating crane installation.

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