【摘要】 利用指数函数拟合“桥规”中徐变系数的数学表达形式 ,以初应变法为基础 ,从徐变应变计算的递推公式出发 ,导出了时步徐变荷载阵的递推公式和两种常用荷载增量的徐变荷载阵的当前项。根据推出的公式、初应变原理和矩阵位移法理论 ,编制了节段施工桥梁考虑徐变影响的平面杆系桥梁结构分析的通用程序。更多还原

【Abstract】 The creep coefficient is fitted in the paper. Based on the initial strain method ,the recurrence formula for calculation of equivalent load of creep is presented.A program is also developed,which employs initial strain method and matrix displacement method.As an example, the developed program is applied to Dong Ting Hu Bridge.更多还原