Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17017
Title: Dynamic stress analysis of long suspension bridges under wind, railway, and highway loadings
Authors: Chen, ZW
Xu, YL 
Li, Q
Wu, DJ
Issue Date: 2011
Source: Journal of bridge engineering, 2011, v. 16, no. 3, p. 383-391
Abstract: Computation of the dynamic stress of long suspension bridges under multiloadings is essential for either the strength or fatigue assessment of the bridge. This paper presents a framework for dynamic stress analysis of long suspension bridges under wind, railway, and highway loadings. The bridge, trains, and road vehicles are respectively modeled using the finite-element method (FEM). The connections between the bridge and trains and between the bridge and road vehicles are respectively considered in terms of wheel-rail and tire-road surface contact conditions. The spatial distributions of both buffeting forces and self-excited forces over the bridge deck surface are considered. The Tsing Ma suspension bridge and the field measurement data recorded by a wind and structural health monitoring system (WASHMS) installed in the bridge are utilized as a case study to examine the proposed framework. The information on the concerned loadings measured by the WASHMS is taken as inputs for the computation simulation, and the computed stress responses are compared with the measured ones. The results show that running trains play a predominant role in bridge stress responses compared with running road vehicles and fluctuating wind loading.
Keywords: Dynamic stress
Highway loading
Railway loading
Structural health monitoring
Suspension bridges
Wind loading
Publisher: American Society of Civil Engineers
Journal: Journal of bridge engineering 
ISSN: 1084-0702
EISSN: 1943-5592
DOI: 10.1061/(ASCE)BE.1943-5592.0000216
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