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| 1 | A combined control strategy using tuned liquid dampers to reduce displacement demands of base-isolated structures: a probabilistic approach显示文摘This paper investigates a hybrid structural control system using tuned liquid dampers (TLDs) and lead-rubber bearing (LRB) systems for mitigating earthquake-induced vibrations. Furthermore, a new approach for taking into account the uncertainties associated with the steel shear buildings is proposed. In the proposed approach, the probabilistic distributions of the stiffness and yield properties of stories of a set of reference steel moment frame structures are derived through Monte-Carlo sampling. The approach is applied to steel shear buildings isolated with LRB systems. The base isolation systems are designed for different target base displacements by minimizing a relative performance index using Genetic Algorithm. Thereafter, the base-isolated structures are equipped with TLDs and a combination of the base and TLD properties is sought by which the maximum reduction occurs in the base displacement without compromising the performance of the system. In addition, the effects of TLD properties on the performance of the system are studied through a parametric study. Based on the analyses results, the base displacement can be reduced 23% by average, however, the maximum reduction can go beyond 30%. | Parham SHOAEI Houtan Tahmasebi ORIMI | 2019 | Frontiers of Structural and Civil Engineering2019，13，4： | 0 |
| 2 | 基于TMD原理的层间隔震结构的抗震性能分析显示文摘利用有限元Etabs分析软件,建立了(框架-核心筒三维模型传统非隔震结构)及基于(TMD调谐质量阻尼器)原理的层间隔震模型.根据TMD原理对传统非隔震结构增设层间隔震装置,并确定隔震支座主要参数.进行了三种典型地震波输入下结构地震响应时程分析及减震效果研究.结果表明:在多遇、罕遇地震下基于TMD原理的层间隔震方案,使主体结构及隔震层上部结构均具有良好的减震效果,结构地震响应得到有效控制.其中多遇地震作用下的层间隔震结构,顶层的平均减震率可达73%;罕遇地震下的层间隔震结构,主体最大层间减震率可达45%,减震效果显著. | 张玉涵 杨德健 师乐萌 | 2020 | 天津城建大学学报2020，26，5： | 0 |
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