解析索单元的温度效应修正

TEMPERATURE EFFECT CORRECTION FOR AN ANALYTICAL CABLE ELEMENT

  • 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.

     

    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.

     

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