Application of Strain Time Histories Measurement in Fatigue-Load Model of Highway Bridges
Fatigue phenomenon caused by numerous repeated cyclic stresses due to traffic loading is one of the main dominant factors that affects the fatigue reliability and durability of highway bridges with steel or composite structures. In this paper, on the basis of W1M data collected from six toll stations on Jing-Fu highway which is one of the busiest highways in China, a fatigue-load model was developed. In order to validate the model, strain time histories were obtained through field strain measurements for 3 existing bridges on this highway. For equivalent strain amplitude, comparison was made between the value obtained from the measurement and those calculated on the basis of the introduced fatigueload model at Jianhe Bridge and l.iuji Bridge, and the maximum error between them is 10％. This work indicates that the fatigue damage accumulation caused by the introduced fatigue-load model can well represent the actual condition, and, the way of developing fatigue-load model which is based on WIM data is feasible for highway bridges in China.
bridges highway girder bridges fatigue fatigue loads strain measurement
YUE Feng REN Xiaosong MIAO Yanyan CHEN min LI Mengyuan HAO Zhigang
School of Landscape Architecture and Civil Engrg., Zhejiang Forestry Univ., Hangzhou 311300, Zhejian Research Institute of Stru.Engrg.& Disaster Reduction, Tongji Univ., Shanghai 200092, China Dezhou Administration Office of Shandong Highway Group Co, Ltd, Dezhou 253000, Shandong, China
国际会议
The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)
杭州
英文
1832-1837
2010-10-26（万方平台首次上网日期，不代表论文的发表时间）