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Optimal design for parameters of coupling beam metal dampers of shear walls based on Kriging surrogate model[J].计算力学学报,2017,(2):131~136

Optimal design for parameters of coupling beam metal dampers of shear walls based on Kriging surrogate model
Optimal design for parameters of coupling beam metal dampers of shear walls based on Kriging surrogate model

DOI：10.7511/jslx201702001

 作者 单位 E-mail 张喆 大连理工大学 运载工程与力学学部 工业装备结构分析国家重点实验室 大连 116024 zhangzh024@163.com 欧进萍 大连理工大学 建设工程学部 大连 116024 李冬生 大连理工大学 建设工程学部 大连 116024

连梁阻尼器是剪力墙连梁结构中主要的耗能部件，其构造形式直接影响剪力墙的性能。本文从连梁阻尼器的几何特征入手，在用料相同的前提下，对四种典型开孔形式金属平面内屈服连梁阻尼器进行耗能性能对比研究，引入Kriging代理模型，构造出不同开孔尺寸与滞回耗能的关系。然后，分别对四种开孔形式的连梁阻尼器几何参数进行进一步优化，以获得最优构型。为简化优化迭代过程中反复的多步加载非线性求解计算，在优化过程中以Kriging代理模型作为反演优化平台，代替原有的几何参数与滞回耗能关系，并采用最大期望提高加点方法，不断提高代理模型在最优解附近的精度，在提高代理模型的代理精度同时，也提高了优化设计效率。所提算法为寻求一种形式简单、性能优越的金属平面内屈服连梁阻尼器提供了新的解决框架。

Couple shear wall structures are well known for their lateral stability and have a promising future in large complex tall structures. Coupling beam dampers are the key components of coupled shear wall structures. In this manuscript, metallic in-plane yielding coupling beam damper with four types of proration and different pore areas are analyzed by the Finite Element Method. It is found that the hourglass-shaped poring coupling beam damper has superior hysteretic behavior and higher load-carrying capacity compared with other types of poring dampers. In addition, the optimized proration parameters are further obtained by using Kriging surrogate model, which maximize the carrying load-capacity and enhance hysteretic behavior of the hourglass-shaped coupling beam damper.