•  
  •  
 

Abstract

In order to study the influence of the fabrication and installation errors of steel beams on the construction process of steel-concrete composite beam cable-stayed bridges and the alignment after bridge completion, based on the basic principle of unstress state control method, the error influence matrix of the unstress alignment of main beams in global and local coordinate systems was derived. The unstress length error of the steel main beam manufactured in the factory and the unstress curvature error caused by on-site installation were analyzed, and the transmission law of alignment error caused by them in construction was studied. The results show that the influence of the fabrication length error of the steel beam on the alignment of the subsequent beam segment accumulates with the construction process and is non-convergent. The influence of the angle error between beam segments on the elevation error decreases gradually with the progress of the construction and tends to be stable, exhibiting self-convergence. At the same time, it is verified that the steel beam length error has little effect on the cable force and the internal force of the steel beam in the composite beam cable-stayed bridge, but it has little effect on the internal force of the bridge deck.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2022.06.012

First Page

72

Last Page

76

Submission Date

May 2025

Reference

[1] 聂建国, 刘明, 叶列平. 钢－混凝土组合结构[M]. 北京: 中国建筑工业出版社, 2005.NIE Jianguo, LIU Ming, YE Lieping. Steel-concrete composite structure[M]. Beijing: China Architecture & Building Press, 2005. [2] 杨岳华. 宽幅组合梁斜拉桥主梁节段预制与安装力学性能研究[D]. 西安: 长安大学, 2017. YANG Yuehua. Study on mechanical properties of prefabrication and installation of main girder segments of cable-stayed bridge with wide composite beams[D]. Xi’an: Changan University, 2017. [3] 蔡禄荣. 大跨度钢桁架拱桥预拱度设置及拼装误差理论研究[D]. 广州: 华南理工大学, 2012. CAI Lurong. Theoretical study on pre-camber setting and assembly error of long-span steel truss arch bridge[D]. Guangzhou: South China University of Technology, 2012. [4] 陈思铭, 陈常松, 颜东煌. 基于逐段安装线形的钢箱梁制造尺寸计算研究[J]. 中外公路, 2020, 40(2): 91-94.CHEN Siming, CHEN Changsong, YAN Donghuang. Research on manufacturing dimension calculation of steel box girder based on piecewise installation line shape[J]. Journal of China & Foreign Highway, 2020, 40(2): 91-94. [5] 中铁大桥勘测设计院集团有限公司.赤壁长江公路大桥工程施工图[Z] ,2019. [5] China Railway Major Bridge Reconnaissance & Design Institute Group Co., Ltd. Construction Drawings for the Chibi Yangtze River Highway Bridge Project [Z]. 2019. [6] 秦顺全. 桥梁施工控制: 无应力状态法理论与实践[M]. 北京: 人民交通出版社, 2007.QIN Shunquan. Bridge construction control: theory and practice of stress-free state method[M]. Beijing: China Communications Press, 2007. [7] 颜东煌. 斜拉桥合理设计状态确定与施工控制[D]. 长沙: 湖南大学, 2001. YAN Donghuang. Determination of reasonable design state and construction control of cable-stayed bridge[D]. Changsha: Hunan University, 2001. [8] 陈常松, 颜东煌, 陈政清. 带刚臂的两节点精确悬链线索元的非线性分析[J]. 工程力学, 2007, 24(5): 29-34. CHEN Changsong, YAN Donghuang, CHEN Zhengqing. Nonlinear analysis of two-node accurate catenary cable element with arbitrary rigid arms[J]. Engineering Mechanics, 2007, 24(5): 29-34.

Download

Share

COinS