大跨度桥梁健康监测过程中的温度影响研究

大跨度桥梁健康监测是近年来工程界的研究热点，但是由于桥梁结构的复杂性和特殊性，监测变量受环境因素的影响较大，增加了系统评估的难度．本文分析了大跨度桥梁在不同温度场荷载作用下的结构反应，研究表明结构各构件间的温度差和梯度温度效应对桥梁结构影响较大．本研究的结果可为桥梁健康监测系统策略的制订提供参考．

Research on Temperature Influences in Long-span Bridges Helath Monitoring

The health monitoring study for long-span bridges has become a hot topic in civil engineering.However,because of its complexity and particularity in bridge structure,monitoring variables are greatly influecnced by environmental factors,which results in more difficulties in evaluation.The paper analyzes structural responses in different temperature fields,and the research results show that effect of temperature difference among members and temperature gradient on bridge stuctuie is remarkable.The resultis may be of reference for bridge health monitoring strategies.