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平面不规则结构在水平地震作用下由于结构刚心和质心不重合而引起的结构扭转耦联使得结构位移比不满足规范要求。在平面不规则结构中布置位移型阻尼器能有效的减小结构的位移比,但阻尼器的参数和位置直接决定了对结构的扭转反应控制效果。首先设计简单的双向偏心框架结构算例,研究位移型阻尼器布置位置和参数对平面不规则结构扭转响应的控制规律。在此基础上基于基本人工鱼群算法结合有限元软件SAP2000API开发一种针对偏心结构中位移型阻尼器布置的优化模型,模型面向多维多自由度实际有限元结构模型,可同时对结构各层位移型阻尼器的布置位置和参数进行优化。最后,利用该文建立的优化模型对某位移比超限的多层不均匀偏心实际结构中的位移型阻尼器进行优化布置,结果表明该文优化模型计算出的位移型阻尼器布置方案使结构的位移比得到了有效的控制。
Planar irregular structure under horizontal earthquake due to the structure of the center of gravity and the center of mass caused by the structural torsion coupling structure displacement ratio does not meet the regulatory requirements. Displacement dampers arranged in a plane irregular structure can effectively reduce the displacement ratio of the structure. However, the parameters and positions of the damper directly determine the torsional reaction control effect on the structure. First, a simple example of the structure of biaxial eccentric frame is designed to study the control law of the position and parameters of the displacement damper on the torsional response of the plane irregular structure. Based on this, an optimization model based on the basic artificial fish-swarm algorithm combined with the finite element software SAP2000API is proposed for the displacement damper arrangement in eccentric structures. The model is oriented to the actual finite element model of multi-dimensional multi-degrees of freedom, Type damper position and parameters of the optimization. Finally, the displacement damper in a multi-layer non-uniform eccentric eccentricity structure with displacement ratio overrun is optimized by using the optimization model established in this paper. The results show that the displacement damper configuration scheme calculated by the paper optimizes the structure The displacement ratio has been effectively controlled.