| 全风化花岗岩抗剪强度影响因素分析 |
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| 引用本文： | 赵建军,王思敬,尚彦军,岳中琦. 全风化花岗岩抗剪强度影响因素分析[J]. 岩土力学, 2005, 26(4): 624-628 |
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| 作者姓名： | 赵建军 王思敬 尚彦军 岳中琦 |
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| 作者单位： | 1. 河海大学 土木工程学院，南京 210098；2. 天津城建学院 土木系，天津 300384 3. 中科院地质与地球物理研究所 北京 100029；4. 香港大学，香港 |
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| 基金项目： | 香港大学边坡信息资讯中心资助项目(No.香港全风化花岗岩的微结构综合研究NO1) |
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| 摘 要： | 研究了香港全风化花岗岩三轴抗剪强度指标凝聚力c、内摩擦角 同微结构及成分的关系，指出微结构的特点决定了强度特点， 值主要由其石英与长石总含量和颗粒中大于0.5 mm的含量所控制，而c值的影响因素复杂性决定了其试验结果的离散性。通过研究c， 值与应变之间的关系，说明摩擦力在强度中占的比重大，并能够进一步解释c值结果的离散性大的原因。
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| 关 键 词： | 全风化花岗岩 抗剪强度 凝聚力 内摩擦角 |
| 文章编号： | 1000-7598-(2005)04-0624-05 |
| 收稿时间： | 2003-12-26 |
| 修稿时间： | 2003-12-26 |
Control factors on shear strength of completely decomposed granite |
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| ZHAO Jian-jun,WANG Si-jing,SHANG Yan-jun,YUE Zhong-qi. Control factors on shear strength of completely decomposed granite[J]. Rock and Soil Mechanics, 2005, 26(4): 624-628 |
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| Authors: | ZHAO Jian-jun WANG Si-jing SHANG Yan-jun YUE Zhong-qi |
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| Affiliation: | 1.College of Civil Engineering, Hohai University, Nanjing 210098, China; 2. Department of Civil Engineering, TIUC, Tianjin 300384, China; 3. Institute of Geology, CAS, Beijing 100029, China; 4.Hong Kong University, Hong Kong, China |
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| Abstract: | The relations among the shear strength, microstructure and composition of completely decomposed granite are discussed. The friction angle is mainly controlled by the content of particles greater than 0.5 mm and total content of quartz and feldspar. The discreteness of cohesion is attributed to the complexity of control factors. The relationship between the shear strength and the strain shows that friction has a predominant proportion in the shear strength. And furthermore, it can explain the discreteness of cohesion as well. |
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| Keywords: | completely decomposed granite (CDG) shear strength cohesion friction angle |
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