【作者】 樊剑； 周金； 刘志雄； 龙晓鸿；

【Author】 FAN Jian;ZHOU Jin;LIU Zhi-xiong;LONG Xiao-hong;School of Civil Engineering and Mechanics of Huazhong University of Science and Technology;Hubei Key Laboratory of Control Structures, Huazhong University of Science and Technology;

【机构】 华中科技大学土木工程与力学学院； 控制结构湖北省重点实验室；

【摘要】 以隔震支座的屈服后刚度和规格化屈服力为优化设计参数,取非平稳随机地震作用下上部结构吸收的最大能量最小为目标函数,以支座失效的概率不超过5%以及支座的第二形态系数不大于某限制为约束条件,提出了获得支座优化设计参数的计算过程;在优化计算过程中用径向基函数响应面代替隐式的目标函数和约束条件,并采用序列二次规划算法求解优化问题。更多还原

【Abstract】 This paper used two parameters to develop an optimization method for bearing design: the post-yielding stiffness and the normalized yield strength of the isolation bearing. Using the minimization of the maximum energy absorption level of the upper structure subjected to an earthquake as an objective function, and with the constraints that the bearing failure probability is no more than 5% and the second shape factor of the bearing is less than 5, a calculation method for the two optimal design parameters was presented. In this optimization process, the radial basis function(RBF) response surface was applied, instead of the implicit objective function and constraints, and a sequential quadratic programming(SQP) algorithm was used to solve the optimization problems.更多还原