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力学与实践 ›› 2013, Vol. 35 ›› Issue (4): 56-59.doi: 10.6052/1000-0879-12-306

• 应用研究 • 上一篇    下一篇

解析索单元的温度效应修正

肖一1, 卓卫东1, 范立础2   

  1. 1. 福州大学土木工程学院, 福州350108;
    2. 同济大学桥梁工程系, 上海200092
  • 收稿日期:2012-08-07 修回日期:2013-05-02 出版日期:2013-08-08 发布日期:2013-08-26
  • 通讯作者: 卓卫东,1966年生,男,教授,主要从事桥梁抗震研究.E-mail:zhuowd@fzu.edu.cn E-mail:zhuowd@fzu.edu.cn

TEMPERATURE EFFECT CORRECTION FOR AN ANALYTICAL CABLE ELEMENT

XIAO Yi1, ZHUO Weidong1, FAN Lichu2   

  1. 1. Department of Civil Engineering, Fuzhou University, Fuzhou 350108, China;
    2. Department of Bridge Engineering, Tongji University, Shanghai 200092, China
  • Received:2012-08-07 Revised:2013-05-02 Online:2013-08-08 Published:2013-08-26

摘要:

已有的解析索单元理论在考虑温度效应时,采用先计算出给定温度下无应力长度,再以此为参考状态进行静力计算的方法,因而温度应变和静力应变基于不同的参考状态. 在Irvine 的推导基础上计入温度效应,得到了基于无应变状态的解析索单元. 算例表明该修正的合理性.

关键词:

解析索单元|温度效应|非线性|有限元

Abstract:

In the existing analytical cable elements, the temperature effects are considered, with the unstressed length being calculated according to the temperature variation first and being taken as the reference state for the static strain. Therefore, the temperature strain and the strain by the static loads have different reference states. Based on Irvine's work, a temperature effect correction for an analytical cable element is made to overcome this problem. An example shows the rationality of the correction.

Key words:

analytical cable element|temperature effect|nonlinearity|finite element

中图分类号: 

  • U441+.3