Flutter reliability analysis of Xiangshan Harbor Highway Cable-Stayed Bridges in Service

Zhang, Tian, Cui, Xinjia, Zhang, Xuefan, Li, Haijiang ORCID: https://orcid.org/0000-0001-6326-8133 and Zou, Yunfeng 2022. Flutter reliability analysis of Xiangshan Harbor Highway Cable-Stayed Bridges in Service. Applied Sciences 12 (16) , e8301. 10.3390/app12168301

PDF - Published Version Download (5MB)

Abstract

With the development of bridge structures towards being light weight and having a large span , the overall flexibility, and, hence, wind sensitivity, of the bridge increases. Flutter is one of the pivotal factors considered in the design and operation stage for long-span cable-stayed bridges due to its devastating impact, often intrigued by relatively low instability caused by wind speed. This paper presents a reliability theory-based numerical analysis on bridge flutter stability and its influence law of key parameters using a real bridge, the Xiangshan Harbor highway cable-stayed bridge in China. The analysis starts with creating a full scale of finite element model for the bridge in service to calculate the flutter derivative and time-dominated combining rational function in order to obtain the critical-flutter wind speed, and then the aerodynamic self-excited forces on the bridge and flutter time-history response are calculated to identify the flutter critical wind speed. Further, the influence of key parameters for flutter reliability, including the stiffness of the main girder, wire breaking rate, damping ratio and cable breakage location are analyzed comprehensively to achieve the change law of critical flutter wind speed with these parameters. Considering the uncertainty of the actual parameters, these parameters are taken as random variables, and the reliability index and failure probability of bridge flutter are calculated according to their probability distribution and the Latin hypercube sampling method. On this basis, a few suggestions are put forward for flutter risk-control during the service of this cable-stayed bridge, which can further enhance the design theory for long-span flexible bridges.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Additional Information:	License information from Publisher: LICENSE 1: URL: https://creativecommons.org/licenses/by/4.0/
Publisher:	MDPI
Date of First Compliant Deposit:	22 August 2022
Date of Acceptance:	17 August 2022
Last Modified:	23 May 2023 15:21
URI:	https://orca.cardiff.ac.uk/id/eprint/152104

Citation Data

Cited 1 time in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item