温度差异对桥梁伸缩度的影响对比分析  

Temperature Differences on the Influence of Bridge Expansion of Comparative Analysis

作　　者：麻文燕[1] 

机构地区：[1]重庆工程职业技术学院,重庆400037

出　　处：《科技通报》2013年第12期218-220,共3页Bulletin of Science and Technology

基　　金：PHC管桩基础在施工过程中的沉降分析研究(2011KJB)

摘　　要：随着我国对桥梁质量的要求不断增加,在充分研究桥梁外部温度变化特征的基础上,计算桥体的质量参数矩阵与温度有限元系数的关系,推断出桥梁的伸缩度与有限元温度变化的关系。通过对比分析,计算桥梁的伸缩度弹性模量随时间和外界温差变化的状况。运用桥梁主体伸缩距离对不同温差情况下的桥体伸缩度进行对比测试。通过某桥体外部不同温差对伸缩度影响进行计算机仿真分析,证明该方法正确可靠,为桥梁维修加固和设计提供了依据。Along with our country to bridge the requirements of quality increase, based on the full study of bridge outside temperature variation characteristics, based on the calculation of the bridge quality parameter matrix and the relationship between the temperature coefficient of finite element method, the authors deduce the bridge expansion degree and finite element temperature variation relationship, through the contrast analysis, calculation of the bridge expansion degree modulus of elasticity with time and temperature changes in the outside world. Using the bridge main expansion distance on different temperature under the condition of the bridge expansion of contrast test. Through a bridge body external different temperature difference of expansion degree effect on computer simulation analysis, it proves that this method is correct and reliable. For bridge maintenance and reinforcement and provide the basis for the design.

关 键 词：温度差异 桥体伸缩度 有限元 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]