Abstract The current code-conforming seismic lateral load patterns are implicitly derived based on the dynamic solutions of fixed-base elastic structural systems, without considering the effects of hysteretic characteristic and soil-structure-interaction (SSI). Consequently, such lateral force patterns may not be applicable for the seismic design of nonlinear deteriorating structural systems. In this study, the analytical model was constructed using the shear building model. The peak-oriented modified I–K model and sway-rocking (S-R) model were employed to simulate the deteriorating behavior and SSI effects, respectively. A practical optimization design procedure for optimal lateral load pattern was developed based on the uniform damage distribution. The influence of main parameters on the new lateral load pattern was comprehensively investigated, including the parameters of the S-R model and the peak-oriented modified I–K model, ground motion excitations, fundamental period, target ductility, damping ratio and so on. The quantified expression of the new lateral load distribution was proposed as a function of fundamental period, the target ductility, aspect ratio and shear wave velocity. The results show that the structures designed according to the proposed lateral force pattern experienced obviously less damage than the code-conforming pattern.

中文翻译：

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考虑土-结构相互作用的破旧剪力建筑抗震设计的新横向荷载分布模式

摘要 当前符合规范的地震横向荷载模式是基于固定基础弹性结构系统的动力解隐式推导出来的，没有考虑滞后特性和土结构相互作用（SSI）的影响。因此，这种横向力模式可能不适用于非线性恶化结构系统的抗震设计。在本研究中，分析模型是使用剪力建筑模型构建的。分别采用面向峰值的修正 I-K 模型和摇摆 (SR) 模型来模拟恶化行为和 SSI 效应。基于均匀损伤分布开发了用于最佳横向载荷模式的实用优化设计程序。综合考察了主要参数对新横向荷载模式的影响，包括SR模型和面向峰值的修正I-K模型参数、地震动激励、基本周期、目标延性、阻尼比等。新的横向载荷分布的量化表达式被提议为基本周期、目标延性、纵横比和剪切波速度的函数。结果表明，根据所提出的横向力模式设计的结构比符合规范的模式受到的损坏明显更少。