抗震结构静力弹塑性分析的Pushover-QR法

目的将以B样条函数为基础的QR法与Pushover分析方法相结合，建立高层建筑结构静力弹塑性分析的Pushover-QR法．方法通过沿用传统Pushover分析的实施思路，用QR法代替Pushover分析方法中的有限元理论部分．结果表明Pushovet-QR法充分利用了QR法和Pushovet分析方法各自的优点，使得抗震结构静力弹塑性分析的计算得到较大的简化；Pushover-QR法在加载模式、目标位移的确定等方面都考虑了结构高阶振型的影响．结论工程算例表明，该法是一种经济、有效、可行的实用分析方法．

Pushover-QR Method for Static Elasto-plastic Analysis of Aseismic Structures

Combining the QR-method based on B-spline functions and the pushover analysis method,the authors put forward the pushover-QR method for static elasto-plastic analysis of high-rising buildings in this paper.The method still hires the ideology of traditional pushover method in static elasto-plastic analysis of (aseismic) structures.By replacing the theory of finite element with the QR-method in the process of pushover analysis and making full use of the advantages of both QR-method and finite element,pushover-QR method greatly simplifies the calculation of astatic elasto-plastic analysis of(aseismic) structures.In addition,the paper has considered the contributions of higher modes of structures when the lateral load patterns,target displacement and other aspects are determined.The procedure of the pushover-QR method is used to calculate some examples,which shows that the pushover-QR method is an economic,efficient and feasible analysis method.