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施加边界位移产生纯剪应力及反分析应用 被引量:49
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作者 张奇华 钟作武 龚壁新 《长江科学院院报》 EI CSCD 北大核心 2000年第2期34-36,共3页
提出了在边界上施加边界位移 ,产生纯剪应力的方法 ,并根据 Cauchy- Kowalewsky定理 ,按位移求解平衡微分方程 ,论证了该方法的可行性。该方法简单易用 ,在地应力场反分析及同类工程中均可得到应用。
关键词 边界位移 平衡微分方程 地应力场反分析
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Analysis of the Effects of Slope Geometry on the Dynamic Response of a Near-field Mountain from the Wenchuan Earthquake 被引量:7
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作者 XIAO Shiguo FENG Wenkai ZHANG Jianjing 《Journal of Mountain Science》 SCIE CSCD 2010年第4期353-360,共8页
Fourier spectra and acceleration response spectra of near-field acceleration records of the 2008 Wenchuan Earthquake have been calculated.Relative fundamental frequencies(or predominant periods) were characterized.The... Fourier spectra and acceleration response spectra of near-field acceleration records of the 2008 Wenchuan Earthquake have been calculated.Relative fundamental frequencies(or predominant periods) were characterized.Then,the natural frequencies of a range of slopes with different geometric characteristics,such as height,slope ratio,and pattern,were analyzed.The seismic responses of the slopes were compared,and the variability of seismic response with the above geometric elements was found.Results show that if slope height increases,and provided that other conditions are unchanged,the natural frequency of the first mode of a doublesurface slope will change as a power law.However,natural frequencies will diminish(based on a parabolic function) as the slope angle becomes large.Both the surface pattern and the number of surfaces on a slope can have a great impact on the seismic response of the slope.Moreover,within a certain range of slope heights or angles,either height or angle will also greatly influence the variability of the seismic response.The results of this research will be helpful to understanding seismic dynamic response features and explaining the ways that slope stability can be affected by earthquakes. 展开更多
关键词 Wenchuan Earthquake SLOPE Geometric features Dynamic response Naturalfrequency
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