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首页> 外文会议>IABSE Conference on Bridges and Structures Sustainability-Seeking Intelligent Solutions >Sensitivity Analysis based Optimal Seismic Design of Tall Buildings under Story Drift Constraint
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Sensitivity Analysis based Optimal Seismic Design of Tall Buildings under Story Drift Constraint

机译：基于思想分析的故事漂移约束下高层建筑的最优地震设计

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摘要

Earthquake actions for tall buildings are significant, thus numerous tall buildings are controlled by earthquake actions. Inadequate lateral stiffness may cause excessive damage to non-structural components, thus story drift limitations under earthquake actions are specified in Chinese Code. Response spectrum analysis is one of the most common methods for seismic analysis of structures. A sensitivity analysis method is carried out based on response spectrum methodunder story drift constraint.The sensitivities of story drift constraint of each mode related to design variables are first determined from the design spectrum, and the sensitivities of different modal responses are then combined using combination rules to produce the overall story drift sensitivities related to design variables. A 2-story planar frame is used to validate the sensitivity analysis method. And an artificial structural optimization method is developed in this paper for optimal seismic design of tall buildings. According to the sensitivity coefficients, cost effective structural design is achieved by means of reasonably distributing materials among the various components. A 468-meter tall building project is employed to illustrate the applicability and effectiveness of the proposed optimal seismic design method.
机译：高层建筑的地震行动是显着的，因此许多高层建筑由地震行动控制。横向刚度不足可能对非结构组件造成过度损害，因此在中国代码中指定了地震行动下的故事漂移限制。响应频谱分析是结构地震分析的最常见方法之一。基于响应频谱法进行敏感性分析方法。故事漂移约束。与设计变量相关的每个模式的故事漂移约束的敏感性首先从设计频谱确定，然后使用组合规则组合不同模态响应的敏感性生成与设计变量相关的整体故事漂移敏感性。 2层平面帧用于验证灵敏度分析方法。本文开发了一种人工结构优化方法，用于高层建筑的最佳地震设计。根据敏感性系数，通过各种组分之间的合理分配材料来实现成本有效的结构设计。采用468米高的建筑项目来说明所提出的最佳地震设计方法的适用性和有效性。

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