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Open Access

ARTICLE

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

Yi Wang1, Bing Wang2, Changwen Li2, Feng Zheng1, Yong Liu2, Shaohua He3,*
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
* Corresponding Author: Shaohua He. Email: email
(This article belongs to the Special Issue: Health Monitoring and Rapid Evaluation of Infrastructures)

Structural Durability & Health Monitoring https://doi.org/10.32604/sdhm.2024.054761

Received 06 June 2024; Accepted 29 July 2024; Published online 02 September 2024

Abstract

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.

Keywords

Continuous girder bridge; construction monitoring; bridge alignment; stress monitoring

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