钢桥面铺装体系温度应力特性研究

明图章¹，胡光伟¹，黄 卫²

(江苏省交通规划设计院¹；东南大学ITS中心²)

摘  要：文章首先给出二维弹性层状理论下钢桥面铺装体系温度应力，在此基础上，提出应用二维粘弹性层状理论对钢桥面铺装体系的温度应力进行计算，并将计算结果与二维弹性层状理论体系及国际通用有限元计算软件SAP程序的计算结果进行了比较。同时，以国内某大跨径钢桥试验桥的铺装层结构体系为对象，研究了其周期性变化的温度应力，分别探讨了连续降温、不同降温速率及铺装层厚度变化对铺装层温度应力的影响。

关键词：温度应力；有限元；二维弹性层状理论；二维粘弹性层状理论

Research for the properties of Temperature Stresses on Long-Span Steel Bridge Pavement System

MING Tu-zhang^①, HU Guang-wei^①, HUANG Wei^②

Jiangsu Communications Planning and Design Institute

Southeast University

Abstract：Temperature stresses on long-span steel bridge pavement is given by 2-D elastic layered theory system in the paper，based on it，2-D viscoelastic layered theory system is put forward to analysis the temperature stresses on long-span steel bridge pavement，good matches are found between those from this paper and the result from FEM．At the same time，the periodic temperature stress is researched for a long-span steel bridge pavement，and the influence of the series cooling、the different cool speed and the thickness of pavement on temperature stresses are discussed．

Keywords：temperature stress; FEM; 2-D elastic layered theory; 2-D viscoelastic layered theory