【作者】 孔思华； 马玉宏； 赵桂峰； 蔡晓君；

【Author】 KONG Si-hua;MA Yu-hong;ZHAO Gui-feng;CAI Xiao-jun;Earthquake Engineering Research & Test Center,Guangzhou University;Guangdong Provincial Key Laboratory of Earthquake Engineering and Applied Technology,Guangzhou University;Key Laboratory of Earthquake Resistance,Earthquake Mitigation and Structural Safety,Ministry of Education,Guangzhou University;School of Civil Engineering,Guangzhou University;

【机构】 广州大学工程抗震研究中心； 广东省地震工程与应用技术重点实验室； 广州大学工程抗震减震与结构安全教育部重点实验室； 广州大学土木工程学院；

【摘要】 为研究凸轮式响应放大形状记忆合金阻尼器对隔震结构的控制效果,建立了附设凸轮式响应放大形状记忆合金阻尼器的多自由度隔震体系运动方程和能量方程,对附设形状记忆合金阻尼器的多自由度隔震体系和附设具有相同形状记忆合金参数的凸轮式响应放大形状记忆合金阻尼器的多自由度隔震体系进行了地震响应分析。结果表明:凸轮式响应放大形状记忆合金阻尼器可充分利用形状记忆合金材料,且可实现隔震层位移高效控制效果;在形状记忆合金材料参数相同的前提下,该阻尼器具有明显的力响应放大效应和阻尼增效特点;在降低形状记忆合金材料需求的同时,该阻尼器可有效避免形状记忆合金材料失效。更多还原

【Abstract】 In order to study the control effect of cam-type response amplified shape memory alloy damper(CRASD) on isolation systems,a multi-degree-of-freedom isolation system with CRASD was established,including the motion equation and energy equation.Seismic response analysis was conducted on three isolation systems at rare and extremely rare earthquake hazard level,including the isolation system without additional dampers,the isolation system with shape memory alloy(SMA) dampers and the isolation system with CRASD,which have the same SMA parameters.The results reveal that CRASD can fully utilize the energy dissipation characteristics of SMA materials and achieve efficient displacement control of the isolation layer.Moreover,the CRASD with the same SMA parameters has obvious force response amplification effect and damping enhancement characteristics.Furthermore,the CRASD effectively avoid the failure of SMA materials,reducing the demand for SMA force and displacement.更多还原