框架结构极限荷载分析的便携解法

本文介绍了框架结构在水平地震作用下极限分析便捷方法的基本原理与具体应用，首先给出了框架结构在地震作用下极限分析的平衡方程及约束条件，然后阐述了便捷解法的基本原理及其力学意义，该方法比常用的单纯形法应用范围广，而且求解快速简便，最后对一个典型例子进行了极限承载力计算，并与其它方法（包括弹塑性精细方法）的计算结果进行了比较，结果表明应用本文中以准确而快捷地计算框架结构的极限承载力以及破坏形式，并找出了结构的薄弱部位，经过进一步的工作，该方法还可以应用于框架－剪力墙结构的极限荷载分析。

Convenient Procedure for Calculating Ultimate Load of Frame

In this paper a limit analysis method-convenient procedure both in principle and in practice was introduced, which is used to calculate the ultimate capability of frame structure under earthquake. Firstly, the equilibrium equations and restricted conditions of frame's limit analysis under earthquake were given. Then the fundamental principle and the mechanical meaning of convenient method were illustrated. The convenient procedure can be used widely and quickly compared with the simple method. Finally, the calculation of a typical example and comparison with the results of other methods, including accurate elasto-plastic method, have been given. The results show that the limit analysis method can calculate the ultimate capability of frame structure accurately and quickly. Furthermore, the plastic hinge position can also be found. This method can also be used to analyse the ultimate load of frame-wall structure.