多维非平稳随机地震响应分析的混合型精细时程积分

蒙文流;韦树英

振动与冲击 ›› 2009, Vol. 28 ›› Issue (10) : 199-202.

PDF(944 KB)
PDF(944 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (10) : 199-202.
论文

多维非平稳随机地震响应分析的混合型精细时程积分

  • 蒙文流;韦树英
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PRECISE TIME INTEGRATION OF MIXED TYPE FOR ANALYSIS OF MULTI-COMPONENTS NON-STATIONARY RANDOM SEISMIC RESPONSE

  • Meng Wen-liu;Wei Shu-ying
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摘要

在一维虚拟激励法的基础上,通过激励功率谱的分解,建立多维非平稳地震激励作用下结构随机响应的虚拟激励法。根据演变随机激励的调制函数取不同形式,推导不同的特解精细积分格式,并混合应用这些格式于结构响应时变功率谱分析,可获得高效精确的数值结果。最后,通过算例讨论地震动各分量相关性对非对称结构地震响应的影响,得到一些有意义的结论。

Abstract

Based on one-component pseudo-excitation method, the pseudo-excitation method under multi-components and mean modulation non-stationary seismic excitation is developed by the use of PSD separation , and a number of high-precision quadratures are developed corresponding to various evolutionary random excitations . A mixed use of such quadratures leads to accurate and very efficient analyses of structural time-dependent power spectral densities . At last , a numerical example is introduced to discuss the effect of correlation of the ground motion components on the seismic responses of asymmetric structure , and several significant conclusions are given

关键词

地震响应 / 非平稳激励 / 多维激励 / 精细积分

Key words

seismic response / non-stationary excitation / multi-component excitation / precise integration

引用本文

导出引用
蒙文流;韦树英. 多维非平稳随机地震响应分析的混合型精细时程积分[J]. 振动与冲击, 2009, 28(10): 199-202
Meng Wen-liu;Wei Shu-ying. PRECISE TIME INTEGRATION OF MIXED TYPE FOR ANALYSIS OF MULTI-COMPONENTS NON-STATIONARY RANDOM SEISMIC RESPONSE[J]. Journal of Vibration and Shock, 2009, 28(10): 199-202
中图分类号: TU311.3   

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