Statistical analysis of three dimensional thermal gradients for wide girders of arch bridge
Thermal loads,especially thermal gradients,have a considerable effect on the behaviors of large-scale bridges throughout their lifecycles.Bridge design specifications provide minimal guidance regarding thermal gradients for simple bridge girders and do not consider transversal thermal gradients in wide girder cross-sections.This paper investigates the threedimensional thermal gradients of arch bridge girders by integrating long-term field monitoring data recorded by a structural health monitoring system,with emphasis on the vertical and transversal thermal gradients of wide concrete-steel composite girders.Based on field monitoring data for one year,the time-dependent characteristics of temperature and three-dimensional thermal gradients in girder cross-sections are explored.A statistical analysis of thermal gradients is conducted,and the probability density functions of transversal and vertical thermal gradients are estimated.
Ting-Hua Yi Guang-Dong Zhou
School of Civil Engineering,Dalian University of Technology College of Civil and Transportation Engineering,Hohai University
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
212-217
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）