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Abstract

In order to study the influence of the random manufacturing error of the main girder permitted by the research specification on the alignment of the finished long-span steel box cable-stayed bridge, guided by the adaptive stress-free configuration construction control theory, the Shishou Yangtze River Highway Bridge, a long-span twin-tower cable-stayed bridge, was studied. The influence and propagation characteristics of the random error effect of the main girder members on the main structure of the cable-stayed bridge were analyzed. The adverse effects of random manufacturing errors of the main girder on the structure of the cable-stayed bridge were studied. The results show that the alignment of the main girder during construction and completion will be changed due to the small geometric random error during the manufacture of the main girder. The random error of girder length has no obvious influence on the alignment of the finished bridge, while the random rotational angle error between adjacent beam segments has a relatively large influence on the alignment of the finished bridge. The alignment error of the finished bridge can be effectively reduced by optimizing the installation cable force when the alignment error caused by the random manufacturing error is too large.

Publication Date

7-14-2023

DOI

10.14048/j.issn.1671-2579.2023.03.013

First Page

88

Last Page

92

Submission Date

March 2025

Reference

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