摘要
本文提出并证明了普遍适用于以广义位移为独立变量的各种数值模型的内力影响面分析的机动算法原理。这一原理把内力影响面分析归结为求解在一个等价荷载作用下的结构位移场,并给出了得到等价荷载的方法。用本文方法得到的是结构某一点的内力的影响面,而且对数值模型来说,是精确解。作为本文原理的应用,用机动法分析了采用有限条模型的薄板的内力影响面,并给出了若干数值例子。
In this paper a principle is proposed and proved. Based on this principle the kinematic method for the analysis of the internal force influence surface of numerical models is developed. Using this method the influence surface for the internal force at any position can be analyzed efficiently and exactly. As its application, the internal force influence surface of thin plates idealized with conventional and spline finite strips are calculated. And some results of numerical examples are illustrated.
基金
国家教委优秀年轻教师基金
关键词
内力影响面
机动法
数值模型
桥梁
internal force influence surface, kinematic method, finite strip, spline finite strip
