Design method for comprehensive node of main cable former unit erected by suspension bridge AS method

Abstract

The invention discloses a design method for a comprehensive node of a main cable former unit erected through a suspension bridge AS method. The method comprises the following steps: basic assumption, establishment of a finite element analysis model, erection of a reference wire, extraction of a tangent angle of the reference wire, determination of a virtual unit installation space angle of a former, installation of a comprehensive node unit of the former, installation of an initial thread unit, adjustment of thread length matching cable force, extraction of data verification assumption implementation, determination of an anchor shoe installation position and determination of a catwalk adjustment scheme. According to the main cable AS method spinning process calculation, the calculation efficiency is improved, the theoretical calculation result is used for guiding construction, and various control parameters of AS method main cable erection construction are provided. The method mainly depends on the construction calculation of the main cable AS method of the Yangbaoshan extra-large bridge, key construction parameters are provided for the main cable AS method erection of the Yangbaoshan extra bridge, and meanwhile, the reliability of the calculation is further verified through the actual monitoring data fed back by the Yangbaoshan extra-large bridge on site.

Description

technical field [0001] The invention relates to the technical field related to the erection of main cable formers for suspension bridges, in particular to a comprehensive node design method for erecting main cable formers of suspension bridges using the AS method. Background technique [0002] The main cable is the most important force-bearing component of the suspension bridge. At present, there are two main cable forming methods: the prefabricated parallel steel wire method (hereinafter referred to as the PPWS method) and the aerial spinning method (hereinafter referred to as the AS method). The domestic suspension bridge basically adopts the PPWS method. The research on calculation methods and thinking of cable strand frame design is also limited to the main cable erected by PPWS method, and there is little research on the theoretical calculation method of main cable erected by AS method. [0003] The conventional PPWS method (PPWS method: the cable strands are prefabrica...

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Problems solved by technology

[0005] Therefore, in order to solve the above-mentioned deficiencies, the present invention provides a kind of suspension bridge AS method to erect the main cable shaper unit integrated node design method here; Design special calculation unit to solve the state and the state of steel wire freely sliding in the shaper in the suspension bridge AS method spinning process Problems with automatic weight distribution

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