土工基础

›› 2016, Vol. 30 ›› Issue (6): 658-661.

• 工程实录 • 上一篇    下一篇

一种多阻尼反应谱拟合的时域叠加方法

陈  胜   

  1. (江苏省岩土工程公司，南京 210000)
  • 收稿日期:2016-06-02 修回日期:2016-06-27 出版日期:2016-12-20 发布日期:2016-12-22
  • 作者简介:陈 胜(1985-)，男，江苏盐城人，河海大学硕士，工程师，研究方向为岩土工程设计和科研。

A Time Domain Superposition Method for the Fitting of Response Spectrum with MultiDampings

CHEN Sheng   

  1. (Jiangsu Geotechnical Engineering Co., Nanjing 210000)
  • Received:2016-06-02 Revised:2016-06-27 Online:2016-12-20 Published:2016-12-22

摘要： 在对结构物进行非线性动力响应分析时，常常需要输入与规范反应谱相拟合的地震动时程。对多阻尼反应谱拟合的时域调整进行了研究。基于单阻尼拟合中广泛应用的时域叠加小波函数方法，改进了模拟算法，考虑了各个阻尼下叠加函数的相互影响，从而实现将该模拟算法推广到多阻尼拟合中。并以某实测地震动为例，分别拟合我国规范反应谱和欧洲规范反应谱，将该地震动调整为以规范反应谱相拟合的地震动，模拟结果表明所提出的多阻尼时域调整方法在多阻尼拟合时可以有效将拟合误差控制在规范要求范围以内，拟合效果较好。

关键词: 动力分析, 多阻尼, 反应谱拟合, 地震动

Abstract: In nonlinear dynamic response analysis of structures, the time history of ground motion is often needed to fit the response spectrum. In this paper, the time domain adjustment of multidamping response spectrum fitting is studied. Based on the timedomain superposition wavelet function method which is widely used in single damping fitting, the simulation algorithm is extended to the multidamping fitting considering the interaction of each damping superposition function. Use a measured ground motion as an example, the ground motion was adjusted and fitted to the normalized response spectrum in accordance with both Chinese normalized response spectra and the European normalized response spectra. The results show that the fitting error can be controlled within allowable range using the proposed multidamping domain adjusting method.

Key words: Dynamic Analysis, Multidamping, Response Spectrum Fitting, Ground Motion