| 黄土震陷的微结构损伤模型 |
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| 引用本文： | 裘国荣,石玉成,刘红玫,王平,钟秀梅.黄土震陷的微结构损伤模型[J].自然灾害学报,2011(5). |
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| 作者姓名： | 裘国荣 石玉成 刘红玫 王平 钟秀梅 |
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| 作者单位： | 中国地震局兰州地震研究所;中国地震局地震预测研究所兰州科技创新基地; |
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| 基金项目： | 国家自然科学基金资助项目(50878200) |
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| 摘 要： | 黄土是典型的结构性土,微结构控制其力学性能和强度要求。通过黄土震陷实验和微结构电镜扫描实验,应用统计细观损伤力学深入研究了考虑微结构要素的黄土震陷的内在破坏机理,得到了黄土震陷的结构损伤模型和本构关系。将计算结果与实验结果进行了比较,结果表明,应用统计细观损伤力学研究黄土震陷机理具有较高的合理性,黄土震陷主要是由其独特的架空孔隙结构破坏和土体颗粒掉入孔隙所致,与其动应力状态和孔隙分布有很大关系。
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| 关 键 词： | 黄土 震陷 损伤模型 本构关系 |
Microstructural damage model of seismic subsidence of loess |
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| QIU Guo-rong,SHI Yu-cheng,LIU Hong-mei,WANG Ping,ZHONG Xiu-mei,.Microstructural damage model of seismic subsidence of loess[J].Journal of Natural Disasters,2011(5). |
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| Authors: | QIU Guo-rong SHI Yu-cheng LIU Hong-mei WANG Ping ZHONG Xiu-mei |
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| Institution: | QIU Guo-rong1,SHI Yu-cheng1,2,LIU Hong-mei1,WANG Ping1,ZHONG Xiu-mei1,2) (1.Lanzhou Institute of Seismology,China Earthquake Administration,Lanzhou 730000,China,2.Lanzhou Creative Base of Institute of Earthquake Prediction,China) |
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| Abstract: | As a typical structural soil,loess's mechanical properties and strength are controlled by its microstructure.Based on seismic subsidence experiment and electron microscope scanning experiment of loess,the inherent failure mechanism of seismic subsidence of loess in consideration of microstructure elements was researched further by statistic microscopic damage mechanics.The structural damage model and constitutive relation of seismic subsidence of loess were obtained.The calculated results were compared with... |
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| Keywords: | loess seismic subsidence damage model constitutive relation |
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