【摘要】 在开发桥梁分析软件时,为了使徐变计算具有系统性、连贯性和可操作性,通过对已有关于徐变计算理论的文献分析,推导并组织了徐变系数、徐变增量法递推公式以及徐变等效节点荷载列阵等相关计算公式,并采用龄期调整有效模量法编制了适合各类杆系结构各种施工情况的徐变分析程序,计算内容包括徐变系数、徐变变形及徐变次内力,最后通过一个变截面固端梁的算例,采用本程序计算并与其他方法计算结果进行对比分析,表明计算思路正确可行.更多还原

【Abstract】 To make the creep calculation systematic, coherent and operable,after analyzing the references about creep theory,the author give the correlation formulas such as creep modulus,creep increment method recursion and creep equivalent node load embattle when programming a software for bridge analysis.An adjusting effective module method according to age is adopted for a creep analysis program which can be fit for all pole structures.The creep coefficient,creep deformation and creep second force are included in the calculation objects.Finally,an example of mutative section fixed end beam is provided and the result obtained by program in this paper and by other method is compared to prove that the result and the calculation flow in this paper is right and feasible.更多还原