混凝土箱梁温度作用分析  

Analysis of the Thermal Effect in Concrete Box-girders

作　　者：李福鼎[1] 

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《上海公路》2014年第3期54-58,11,共5页Shanghai Highways

摘　　要：从实际工程设计角度出发,建立实体模型分析了温度应力的分布规律,并将其纵向应力计算结果与相应杆系模型和初等梁理论结果进行了对比分析。同时对影响箱梁横向温度应力分布的一些因素进行了参数分析,在对不同参数计算结果进行对比分析的基础上,总结出了箱梁横向温度应力分布的规律,并提出了一些建议以供设计人员参考。From the point of the actual engineering design,this article established the entity model and and analyzes the temperature stress distribution,compared and evaluated the longitudinal stress calculation results with the corresponding pole model and the elementary beam theory results.At the same time,some factors of the effect of box girder transverse temperature stress distribution are analyzed.Based on the comparative analysis of the calculation results of different parameters,the box beam transverse temperature stress distribution law is summed up.This article also puts forward some suggestions,which may be adopted by other designers.

关 键 词：温度应力 梯度温度 自应力 顶板 腹板 承托 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]