ABSTRACT

This paper presents a practical procedure using nonlinear time-history analysis to assess the seismic demand of reinforced concrete buildings considering nonlinear soil effects. The purpose of this paper is to employ a spectral method to avoid soil-structure-interaction analysis considering nonlinear site-specific conditions. In this regard, structural models were assessed by dynamic analysis using site-specific spectra that included soil-nonlinearity. Ground motion records compatible with target spectra were scaled based on a wavelet-based algorithm. The results indicate that the structural drift and force demand increase considerably due to soil-nonlinearity. Furthermore, the soil-nonlinearity leads to larger structural responses at clayey sites than at sandy ones.

摘要

本文介绍了一种使用非线性时程分析来评估考虑非线性土壤效应的钢筋混凝土建筑物抗震需求的实用程序。本文的目的是采用光谱方法来避免考虑非线性特定场地条件的土壤结构相互作用分析。在这方面，结构模型通过使用包括土壤非线性的特定地点光谱的动态分析进行评估。与目标光谱兼容的地面运动记录基于基于小波的算法进行缩放。结果表明，由于土壤非线性，结构漂移和力需求显着增加。此外，土壤非线性导致粘土场地的结构响应比沙质场地更大。