显式积分针对非线性结构的性能研究

田志昌，王保生，李倩，苏佶智

（内蒙古科技大学 建筑与土木工程学院，内蒙古 包头 014010）

关键词：非线性结构；显式积分；中心差分法

中图分类号：TU311.3          文献标识码：A

摘要：本文利用fortran编写了显式积分中的中心差分法，并根据一高层框架剪力墙结构的简化模型进行分析。根据结构的不同刚度值分别在弹性和弹塑性阶段得出结构的位移数据。做出数据曲线，查看其敛散性，并与WILSON-θ法进行对比分析结构的性能对显式积分的影响。

Research of explicit integration capability for nonlinear structure

TIAN Zhi-chang，WANG Bao-sheng，LI qian，SU Ji-zhi

(Architecture and Civil Engineering School, Inner Mongolia University of Science and Technology, Baotou014010, China)

Key words:nonliner structure;explicit integration;central difference method

Abstract:The central difference method of the explicit integration was compiled based on Fortran language and a simplified model of the Frame-shear wall structure was analyzed. According to the different stiffness values of the structure, the structure displacement data were obtained in the elastic and elastoplastic phases. And the data curve was worked out, viewing its convergence and divergence. The impact of the structure capability on the explicit integration was compared with that by WILSON-θmethod.