Multilevel earthquake-response constrained design methods of building frames with system performance parameters as control variables

在本项目中，发展了几种实用的设计方法来寻找建筑结构的多级地震反应约束设计，使得所有设计平均最大响应量设计(谱相容)中等地震动且设计(谱相容)大震不超过规定的限值。主要结果如下：1.剪切型建筑在设计大震作用下，层间位移的平均最大塑性分量比的分布几乎是均匀的，只要在设计中等地震作用下，层间位移是均匀的。提出了一种求平面弹性建筑框架在给定的基本固有周期和基本特征振型下杆件刚度的理论。在此理论基础上，提出了平面建筑…反应约束设计的实用方法更多的GS受到设计中等地震的影响。提出了一种满足中震和大震两种地震反应约束条件的平面框架结构的多级反应约束设计方法。提出了一种求解平面框架弹塑性反应约束设计的方法，使得在一组设计主震作用下，每个构件的平均最大塑性构件比等于规定值。提出了桩基剪力墙结构的反应约束设计方法，以及剪力墙结构的场地相关设计反应谱。发展了两种求解一维分布质量结构响应约束设计的方法，即级数展开法和Galerkin法。发展了一种计算方法，用于生成关于指定设计应变水平的参数的竖向激励双层网架的响应应变约束设计的有序集合。较少

In this project, several practical design methods have been developed of finding multilevel earthquake-response constrained designs of building structures, such that all the design mean maximum response quantities to design (spectrum-compatible) moderate earthquake motions and to design (spectrum-compatible) major earthquake motions would not exceed the prescribed limits. The main results are as follows:1. The distribution of mean maximum plastic component ratios of interstorey drifts in a shear building has been found to be almost uniform under an ensemble of design major earthquakes so far as the building has been designed so that the interstorey drifts would be uniform under an ensemble of design moderate earthquakes.2. A theory has been developed of finding member stiffnesses of a plane elastic building frame for specified fundamental natural period and fundamental eigenmode. Based on this theory, a practical method has been developed of response constrained design of plane buildin … More gs subjected to design moderate earthquakes.3. A multilevel response constrained design method has been developed of finding plane frames which satisfy both response constraints, one for design moderate earthquakes and the other for design major earthquakes.4. A method has been developed of finding the inelastic response constrained designs of plane frames such that each mean maximum member plastic component ratio under an ensemble of design major earthquakes is equal to the prescribed value.5. A response constrained design methods has been developed for pile-supported shear buildings, and for shear buildings for site-dependent design response spectra.6. Two methods have been developed of finding response constrained designs of one- dimensional distributed mass structures, by means of a series expansion method and of a Galerkin method.7. A computational method has been developed of generating an ordered set of response-strain constrained designs of vertically excited double-layer grids, with respect to a parameter which specifies the design strain level. Less