Incorporating site-specific weigh-in-motion data into fatigue life assessment of expansion joints under dynamic vehicle load
In long-span bridges, expansion joints are essential in accommodating bridge movement under multiple loads. Generally, expansion joints have a shorter lifespan than the bridge, and they should be maintained regularly for their design function. In this paper, an approach is proposed to estimate the fatigue life of modular expansion joints under stochastic traffic load considering the dynamic impacts of vehicle wheels. The proposed approach consists of three steps, namely, the establishment of the stochastic traffic load model, numerical analysis on the expansion joints under dynamic vehicle load, and fatigue life assessment of expansion joints. Expansion joints in a cable-stayed bridge are used to verify the approach. Site-specific weight in motion (WIM) data are collected to establish the stochastic traffic model, and a vehicle-joint interaction analysis scheme is performed to obtain the stress responses. Effects of vehicle velocities, horizontal impact component, surface irregularities, and damping ratios of the expansion joints are investigated. The rupture in a center beam of expansion joints was successfully explained with the fatigue assessment approach, which was due to the loss of sliding spring. Conclusions are drawn to benefit the design and maintenance of expansion joints.
- Record URL:
- Record URL:
-
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/01410296
-
Supplemental Notes:
- © 2022 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
-
Authors:
- Sun, Zhen
- Ye, Xiao-Wei
- Publication Date: 2022-3-15
Language
- English
Media Info
- Media Type: Web
- Features: Figures; Photos; References; Tables;
- Pagination: 113941
-
Serial:
- Engineering Structures
- Volume: 255
- Issue Number: 0
- Publisher: Elsevier
- ISSN: 0141-0296
- Serial URL: http://www.sciencedirect.com/science/journal/01410296
Subject/Index Terms
- TRT Terms: Data analysis; Dynamic loads; Expansion joints; Fatigue limit; Weigh in motion
- Subject Areas: Bridges and other structures; Data and Information Technology; Highways; Maintenance and Preservation;
Filing Info
- Accession Number: 01837477
- Record Type: Publication
- Files: TRIS
- Created Date: Feb 28 2022 9:40AM