Stress Analysis of Cable-Girder Anchorage Structure During Construction Phase of a Hybrid Girder Cable-Stayed Bridge

Authors

WANG Zhiguo, No.6 Engineering Co . Ltd., of FHEC of CCCC, Tianjin 300451, ChinaFollow
XIONG Zhancheng, No. 6 Engineering Co . Ltd., of FHEC of CCCC, Tianjin 300451, China
LIU Yuxiong, China Railway Construction Bridge Engineering Bureau Group Co., Ltd., Tianjin 300300, China
SHI Jialin, Central South University of Forestry & Technology, Changsha, Hunan 410004, China

Abstract

The delayed casting technology of wet joints can significantly shorten the construction period of hybrid girder cable-stayed bridges. To ensure the safety of the stress in the cable-girder anchorage structure of the steel anchor box type under this new process, this paper took a large-span hybrid girder cable-stayed bridge as the research object. It studied the stress distribution pattern and the sensitivity of component parameters in the anchorage zone during construction. Firstly, the construction cable forces were obtained by establishing a full-bridge grid model using the finite element software Midas Civil. Combined with the Abaqus software, a detailed local model of the cable-girder anchorage structure was built. Based on the delayed casting technology of wet joints for the hybrid girder cable-stayed bridge, the weld force transfer under different cable force conditions was calculated. Finally, a parameter analysis was conducted considering the variations in the thickness of the anchorage structure plates and the angles of the pre-embedded sleeves. The results indicate that under the delayed two-section casting scheme, the stress in each component of the steel anchor box structure is within safe limits. Influenced by the angle of the pre-embedded sleeves, the stress on the welds tends to be higher on the lower side than on the upper and more significant on the inner side of the bridge centerline than on the outer. The effective stress distribution along the length of the welds typically exhibits a saddle-shaped pattern. The top plate anchor stiffening and the thickness of the pre-embedded sleeves have the most significant impact on weld stress. The maximum weld stress is directly proportional to the horizontal and vertical angles of the pre-embedded sleeves.

Publication Date

2-5-2026

DOI

10.14048/j.issn.1671-2579.2026.01.021

First Page

196

Last Page

204

Submission Date

February 2026

Recommended Citation

Zhiguo, WANG; Zhancheng, XIONG; Yuxiong, LIU; and Jialin, SHI (2026) "Stress Analysis of Cable-Girder Anchorage Structure During Construction Phase of a Hybrid Girder Cable-Stayed Bridge," Journal of China & Foreign Highway: Vol. 46: Iss. 1, Article 21.
DOI: 10.14048/j.issn.1671-2579.2026.01.021
Available at: https://zwgl1980.csust.edu.cn/journal/vol46/iss1/21

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