Construction Monitoring and Analysis of Asymmetric Prestressed Concrete Bridge Crossing Multiple-Line Railways  

作　　者：Yi Wang Bing Wang Changwen Li Feng Zheng Yong Liu Shaohua He 

机构地区：[1]Guangzhou Railway Investment Construction Group Co.,Ltd.,Guangzhou,510000,China [2]China Railway Third Bureau Group Co.,Ltd,Taiyuan,030024,China [3]School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou,510006,China

出　　处：《Structural Durability & Health Monitoring》2025年第2期385-398,共14页结构耐久性与健康监测(英文)

基　　金：The Guangdong Basic and Applied Basic Research Foundation(Grant#2023A1515010535).

摘　　要：Complex bridge structures designed and constructed by humans often necessitate extensive on-site execution,which carries inherent risks.Consequently,a variety of engineering practices are employed to monitor bridge construction.This paper presents a case study of a large-span prestressed concrete(PC)variable-section continuous girder bridge in China,proposing a feedback system for construction monitoring and establishing a finite element(FE)analysis model for the entire bridge.The alignment of the completed bridge adheres to the initial design expectations,with maximum displacement and pre-arch differences from the ideal state measuring 6.39 and 17.7 mm,respectively,which were less than the 20 mm limit required by the specification.Additionally,the stress monitoring showed that the maximum compressive stress was 10.44 MPa,which was 7.5%different from the finite element results,and better predicted the most unfavorable possible location.These results demonstrate that a scientifically rigorous construction monitoring and feedback system can ensure the safety of bridge construction and meet the expected construction standards.The findings presented in this paper provide valuable insights for bridge construction monitoring practices.

关 键 词：Continuous girder bridge construction monitoring bridge alignment stress monitoring 

分 类 号：TU3[建筑科学—结构工程]