基于超级单元的钢-混凝土混合结构动力特性及地震反应研究

Study on dynamic behavior and seismic response of steel frame-reinforced concrete wall mixed structure based on super element

本文提出了基于超级单元的钢框架-混凝土剪力墙结构体系动力特性及地震反应分析的一种方法,该方法考虑了混合结构体系中钢框架部分的受力和变形特点,即节点柔性(半刚性)、梁柱效应(p-δ效应)及P-Δ效应(以下合称P-Delta效应),推导了考虑三种因素情况下,钢框架的层间侧移刚度及钢框架-混凝土剪力墙结构体系的超级单元刚度矩阵,采用刚度法求解钢框架-混凝土混合结构周期和振型。该方法物理概念清楚,计算简便。

Based on super element, a method used for analysing the dynamic behavior and seismic response of steel framereinforced concrete shear wall mixed structure is presented. The flexible connection of joint of beamcolumn, beamcolumn effect(pδ effect) and second order effect (PΔ effect) can be considered. The method is suitable for calculating natural period of vibration and vibration mode. The super element stiffness matrix of structure and drift stiffness of steel frames part of structure is derived.