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首页> 外文期刊>Computers & Structures >An optimal resizing technique for seismic drift design of concrete buildings subjected to response spectrum and time history loadings
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An optimal resizing technique for seismic drift design of concrete buildings subjected to response spectrum and time history loadings

机译：响应频谱和时程荷载作用下混凝土建筑物地震漂设计的最佳尺寸调整技术

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摘要

In an effort to improve conventional trial-and-error seismic design methods that rely heavily on engineers' experience and intuition, there have been attempts to develop an automatic resizing technique for the optimal drift designs of concrete framework structures. This paper presents an effective numerical optimisation technique for the seismic drift performance design of buildings under multiple earthquake loading conditions. Specifically, an Optimality Criteria (OC) method is developed to minimize the construction costs subject to seismic drift performance constraints and member sizing constraints. The emphasis is first placed on the formulation of an elastic drift design problem from the response spectrum or time history loadings and then on the details of the OC method to produce the optimal drift design. Two building frame examples are presented to illustrate the effectiveness and practicality of the proposed optimal method. The optimisation algorithm demonstrates its ability in automatically adjusting the stiffness of structural members and in simultaneously considering multiple earthquake responses to produce an optimal design while satisfying all specified drift performance criteria.
机译：为了改进严重依赖工程师经验和直觉的传统试错地震设计方法，已经尝试开发一种自动调整大小的技术，以用于混凝土框架结构的最佳漂移设计。本文提出了一种有效的数值优化技术，用于多种地震荷载条件下建筑物的抗震性能设计。具体而言，开发了一种最佳性标准（OC）方法，以最大程度地减少受地震漂移性能约束和构件尺寸约束的建筑成本。首先将重点放在从响应谱或时程荷载上制定弹性漂移设计问题，然后着重于OC方法的细节以产生最佳漂移设计。给出了两个建筑框架实例，以说明所提出的最佳方法的有效性和实用性。该优化算法证明了它能够自动调整结构构件的刚度，并同时考虑多种地震响应，从而在满足所有指定的漂移性能标准的同时，产生最佳设计的能力。

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