【作者】 王永贵；

【导师】 高尔新；

【作者基本信息】 中国矿业大学（北京） ， 结构工程， 2014， 博士

【摘要】 屈曲约束支撑通过外围约束单元抑制内部芯材在轴向荷载下产生屈曲失稳现象，不仅起到普通支撑的作用，而且其滞回曲线饱满，地震作用下，屈曲约束支撑先于主体结构屈服，减轻主体结构的震害程度，增强结构体系的抗震性能，是屈曲约束支撑框架结构体系抵抗地震作用的第一道防线。本文基于屈曲约束支撑的工作原理对其构造设计的若干关键理论问题进行了详细探讨，通过数值模拟分析了相关参数对其性能的影响，提出了端部加强型屈曲约束支撑的设计方法；针对我国钢材市场，选取国标Q235角钢作为支撑内核芯材，设计并制作了6个支撑构件，通过低周循环加载试验，检验了其消能减震性为；通过对支撑框架结构体系消能减震的理论分析及数值模拟研究，详细分析了屈曲约束支撑的布置方式及抗侧刚度比等对支撑框架结构抗震性能的影响；根据能量守恒原理，提出了支撑框架结构基于能量的设计方法。更多还原

【Abstract】 Through the external constraint unit suppresses the internal core buckling instability in the axialload buckling-restrained braces(BRB) not only play the role of general brace, but also cansignificantly improve the ductility and seismic capacity of the buckling-restrained brace frame(BRBF) structure because of its hysteresis curve is full. The BRB is BRBF structures earthquakeresistant systems first line of defense. In this paper, the key theoretical problem on the componentdesign based on the working principle of BRB was discussed in detail, the influence of relatedparameters was studied through the numerical simulation, and the design method of BRB wassummarized and perfected; In view of China’s steel market, GB Q235angle was selected as kernelcore of BRB, six supporting specimen were designed and produced to verify the correctness of itsenergy dissipation properties and related theories through low cycle loading tests; A design methodbased on energy was proposed through the theoretical analysis and the simulation study on theBRBF structure system.更多还原