Matching Analysis of Cantilever Assembly for Wide Steel-UHPC Composite Girder in Cable-Stayed Bridge

Authors

CHEN Changsong, School of Civil and Environmental Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, ChinaFollow
WANG Cong, School of Civil and Environmental Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, ChinaFollow
HUANG Gen, School of Civil and Environmental Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, China

Corresponding Author

王聪, 男, 硕士研究生.E-mail: 357250130@qq.com

Abstract

To control the deformation difference bet ween the to-be-installed and installed segments during the cantilever assembly of wide steel-UHPC composite girders in cable-stayed bridges and achieve precise matching, this paper first introduced a matching method combining pre-hanging cables with crane unloading. Then, by taking the Guanyin Temple Yangtze River Bridge (a super-kilometer-span cable-stayed bridge with wide steel-UHPC composite girders) as the engineering background, a locally refined finite element model was established to analyze the vertical deformation laws of the matching sections during the cantilever assembly construction phase. Finally, the effects of matching sequence, pre-hanging cable force, and crane unloading ratio on the deformation and stress of the girder segments were discussed. Calculation methods for pre-tensioning cable force and unloading ratio were proposed, and the optimal unloading scheme was determined. The results show that the method of pre-hanging cables with crane unloading can effectively reduce the vertical deformation difference between the to-be-installed and installed segments during the cantilever assembly of wide steel-UHPC composite girders, creating favorable conditions for the precise matching of the splicing between to-be-installed and installed segments.

Publication Date

2-5-2026

DOI

10.14048/j.issn.1671-2579.2026.01.015

First Page

140

Last Page

150

Submission Date

February 2026

Recommended Citation

Changsong, CHEN; Cong, WANG; and Gen, HUANG (2026) "Matching Analysis of Cantilever Assembly for Wide Steel-UHPC Composite Girder in Cable-Stayed Bridge," Journal of China & Foreign Highway: Vol. 46: Iss. 1, Article 15.
DOI: 10.14048/j.issn.1671-2579.2026.01.015
Available at: https://zwgl1980.csust.edu.cn/journal/vol46/iss1/15

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