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首页> 外文期刊>Journal of Earthquake Engineering >Optimum Design Approaches for Improving the Seismic Performance of 3D RC Buildings
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Optimum Design Approaches for Improving the Seismic Performance of 3D RC Buildings

机译：改善3D RC建筑物抗震性能的最佳设计方法

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摘要

In this article, a number of design approaches for 3D reinforced concrete (RC) buildings are formulated in the framework of structural optimization problems and are assessed in terms of their performance under earthquake loading. In particular, three design approaches for RC buildings are considered in this study. In the first, the initial construction cost is considered as the objective function to be minimized. The second one is formulated as a minimization problem of the torsional response, while a combined formulation is also examined as the third design approach. The third approach is considered with two distinctive formulations. According to the first approach, the torsional behavior is minimized by minimizing the eccentricity between the mass and rigidity centers, while the second one is achieved by minimizing the eccentricity between the mass and strength centers. It is shown that the optimized designs obtained according to the minimum eccentricity of the rigidity center behave better in frequent (50/50 hazard level) and occasional (10/50 hazard level) earthquakes, while the designs obtained according to the minimum eccentricity of the strength center formulation was found better in rare (2/50 hazard level) events. Designs obtained through a combined formulation seem to behave equally well in the three hazard levels examined.
机译：在本文中，在结构优化问题的框架内阐述了3D钢筋混凝土（RC）建筑物的多种设计方法，并根据其在地震荷载下的性能进行了评估。特别是，本研究考虑了RC建筑物的三种设计方法。首先，将初始建设成本视为要最小化的目标函数。第二种方法被设计为扭转响应的最小化问题，而组合方法也作为第三种设计方法进行了研究。第三种方法被认为具有两种独特的表达方式。根据第一种方法，通过最小化质心和刚度中心之间的偏心率来最小化扭转行为，而第二种方法是通过最小化质心和强度中心之间的偏心率来实现。结果表明，根据刚度中心的最小偏心率获得的优化设计在频繁（50/50危险等级）和偶发（10/50危险等级）的地震中表现更好，而根据刚度中心的最小偏心获得的设计则表现更好。在罕见（2/50危险等级）事件中发现强度中心公式更好。通过组合配方获得的设计在所考察的三个危险等级中似乎表现良好。

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