凸轮式响应放大摩擦阻尼器基于性态目标的能量设计方法

在前期对凸轮式响应放大摩擦阻尼器(cam type response amplification device with friction damper, CRAD-FD)研究的基础上，对安装该阻尼器的单自由度体系建立了能量方程，推导了简谐荷载作用下CRAD-FD单圈滞回的能量解析解；基于消能减震结构标准能量设计反应谱，提出了CRAD-FD基于性态目标的能量设计方法；以某10层RC框架结构为例，在设防、罕遇、极罕遇地震作用下验证了该方法的可靠性。研究表明：所推导的CRAD-FD的能量解析解正确，所提出的基于性态目标的能量设计方法可靠；消能减震结构通过CRAD串联小吨位摩擦阻尼器的减震与耗能效果可与直接安装大吨位阻尼器的效果相差无几或更优，体现了CRAD的响应放大效应。

ENERGY DESIGN METHOD OF CAM RESPONSE AMPLIFICATION DEVICE WITH FRICTION DAMPER BASED ON PERFORMANCE TARGET

Based on the previous research on the Cam type Response Amplification Device with friction damper ( CRAD-FD ), the energy equation of the single-degree-of-freedom system installed with the damper is established, and the energy analytical solution of the CRAD-FD single-loop hysteresis under harmonic load is derived. Based on the standard energy design response spectrum of energy dissipation structure, the energy design method of CRAD-FD based on performance objective is proposed. Taking a 10-story RC frame structure as an example, the reliability of the method is verified under the action of fortification, rare and extremely rare earthquakes. The research shows that the energy analytical solution of CRAD-FD is correct, and the energy design method based on the performance target is reliable. The energy dissipation structure can obtain a similar or better damping control effect by directly installing large tonnage dampers through CRAD series small tonnage friction dampers, which reflects the response amplification effect of CRAD.