【摘要】 从抗倒塌角度出发,采用理论分析和算例计算相结合的方法,对部分柱顶滑移钢筋混凝土框剪结构的框架梁设计、摩擦系数下限值估算、摩擦支座中震耗能等进行了探讨。研究结果表明:1)考虑框架梁塑性铰区受拉纵筋强化并调整设计步骤后,框架梁的经济性更好;2)基于D值法的摩擦系数下限值估算方法与现行规范联系紧密,便于工程人员应用;3)中震作用下摩擦支座可提供较大附加阻尼比,耗能效应较为明显。更多还原

【Abstract】 In view of the anti-collapse design of RC frame-shear wall structures,some studies on the RC frame-shear wall structures with partial columns sliding at upper ends are presented in this paper,including design of the frame beams,assessment of the lower limit value of friction coefficient,and energy dissipation analysis of the friction supports.Simulation results show that:(a) by taking the hardening of tensile reinforcements into account and by adjusting the design procedures,the frame beams may be designed more economically;(b) the assessment method for the low limit value of friction coefficient is related to the current design code and easier for engineering application;and(c) a larger additional damping ratio can be provided by the friction supports under moderate earthquake,leading to considerable energy-dissipated effect.更多还原