Open Access

ARTICLE

Process Monitoring and Terminal Verification of Cable-Stayed Bridges with Corrugated Steel Webs under Contruction

by Kexin Zhang, Xinyuan Shen, Longsheng Bao, He Liu^*

School of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang, 110168, China

* Corresponding Author: He Liu. Email:

Structural Durability & Health Monitoring 2023, 17(2), 131-158. https://doi.org/10.32604/sdhm.2023.023431

Received 26 April 2022; Accepted 09 August 2022; Issue published 09 May 2023

Abstract

In this paper, the construction process of a cable-stayed bridge with corrugated steel webs was monitored. Moreover, the end performance of the bridge was verified by load test. Owing to the consideration of the bridge structure safety, it is necessary to monitor the main girder deflection, stress, construction error and safety state during construction. Furthermore, to verify whether the bridge can meet the design requirements, the static and dynamic load tests are carried out after the completion of the bridge. The results of construction monitoring show that the stress state of the structure during construction is basically consistent with the theoretical calculation and design requirements, and both meet the design and specification requirements. The final measured stress state of the structure is within the allowable range of the cable-stayed bridge, and the stress state of the structure is normal and meets the specification requirements. The results of load tests show that the measured deflection values of the mid-span section of the main girder are less than the theoretical calculation values. The maximum deflection of the girder is −20.90 mm, which is less than −22.00 mm of the theoretical value, indicating that the girder has sufficient structural stiffness. The maximum impact coefficient under dynamic load test is 1.08, which is greater than 1.05 of theoretical value, indicating that the impact effect of heavy-duty truck on this type of bridge is larger. This study can provide important reference value for construction and maintenance of similar corrugated steel web cable-stayed bridges.

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Keywords

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