摘要
本文利用初应变法推导出由徐变增量和收缩应变增量产生的单元等效结点力增量,将"公桥规"(JTG D62-2004)中给出的混凝土徐变系数和收缩应变表达式用指数函数进行拟合,得出收缩徐变递推计算公式。该公式简洁统一,可实现收缩与徐变的同步计算。
In this paper, the equivalent node force increment caused by the creep and shrink strain increment in the elements are deduced by the way of the initial strain method. Based on the fact, the author fitted the creep coefficient and shrink strain expression listed in the bridge criterion （JTGD62-2004） with exponential function model and found a way to get the recursion formulas of shrinkage and creep. The recursion formulas are succinct and unified, they are suited to calculate the creep and shrinkage simultaneously.
出处
《辽宁省交通高等专科学校学报》
2012年第5期5-8,共4页
Journal of Liaoning Provincial College of Communications
关键词
桥梁工程
收缩徐变初应变法
函数拟合
递推公式
Bridge Engineering, Shrinkage and Creep, the Initial Strain Method, Function Fitting,Recursion Formula
