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| 初始主应力方向对钙质砂动力特性影响的试验研究 | |
| 引用本文： | 李建国,汪稔,虞海珍,何杨,许成顺.初始主应力方向对钙质砂动力特性影响的试验研究[J].岩土力学,2005,26(5):723-727. |
| 作者姓名： | 李建国 汪稔 虞海珍 何杨 许成顺 |
| 作者单位： | 1. 中国科学院岩土力学重点实验室,武汉,430071 2. 华中科技大学,土木工程学院,武汉,430074 3. 大连理工大学,土木水利学院,大连,116024 |
| 基金项目： | 国家自然科学基金资助项目(No.40272121)，科技部“十·五”南沙群岛及其邻近海区综合调查项目(No.7001DIA50041)资助。 |
| 摘 要： | 利用大连理工大学的土工静力-动力液压三轴-扭转动多能剪切仪对相对密度为30％的钙质砂进行了扭转和竖向循环耦合试验，探讨了初始主应力方向角α0对钙质砂动强度和残余应变发展的影响。试验结果表明：α0对钙质砂的动强度、残余应变发展的影响非常明显，随着α0的增大，钙质砂的动强度显著减小，而残余应变的发展速度则明显加快。 |
| 关 键 词： | 初始主应力方向 动强度 残余应变 三轴扭转多功能剪切仪 扭转和竖向循环耦合剪切试验 钙质砂 |
| 文章编号： | 1000-7598-(2005)05-0723-05 |
| 收稿时间： | 2004-08-17 |
| 修稿时间： | 2004年8月17日 |
Experimental research on effect of initial principal stress orientation on dynamic properties of calcareous sand |
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| LI Jian-guo,WANG Ren,YU Hai-zhen,HE Yang,XU Cheng-shun.Experimental research on effect of initial principal stress orientation on dynamic properties of calcareous sand[J].Rock and Soil Mechanics,2005,26(5):723-727. | |
| Authors: | LI Jian-guo WANG Ren YU Hai-zhen HE Yang XU Cheng-shun |
| Institution: | 1. Key Laboratory of Rock and Soil Mechanics, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2.Institute of Civil Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; 3.School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China |
| Abstract: | In order to investigate the effect of the initial angle of principal stress on dynamic strength and residual strain behaviors of calcareous sand under cyclic loading, a series of triaxial-and-torsional coupling cyclic shear tests on calcareous sand with a relative density of 30 % were carried out in a new universal triaxial and torsional shear apparatus of Dalian University of Technology. The test results show that the effect is marked. With the increasing of , the dynamic strength of calcareous sand decreases obviously and the rising rate of residual strain increases. |
| Keywords: | initial principal stress orientation dynamic strength residual strain universal triaxial and torsional shear apparatus triaxial-and-torsional coupling cyclic shear test calcareous sand |
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