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Abstract

With the appearance of asymmetric long-span suspension bridges, it is necessary to study the optimization of the hoisting sequence of the main beams of this type of suspension bridges. By setting the maximum allowable value of the main tower deviation and the target alignment of the main tower, the method flow of optimizing the hoisting sequence of the main beams of the asymmetric long-span suspension bridge was given according to the relationship between the hoisting sequence of the main beams and the incremental launching scheme of the main tower. By taking an asymmetric long-span suspension bridge in Guangdong as an example, this method was used to optimize the hoisting sequence of the main beam, and good results were obtained and verified as follows. The hoisting of the main beam should be conducted from the middle span to the two towers, and the hoisting speed of the middle span should be consistent with the proportion of the number of standard beam segments of the middle span. The incremental launching scheme of the main tower should be formulated based on the maximum allowable value of the main tower deviation and the hoisting sequence of the main beam.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2022.06.016

First Page

94

Last Page

98

Submission Date

May 2025

Reference

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