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| 排水条件下饱和砂土单调剪切特性试验研究 | |
| 引用本文： | 冷艺,栾茂田,许成顺,马太雷.排水条件下饱和砂土单调剪切特性试验研究[J].大连理工大学学报,2009,49(1):98-104. |
| 作者姓名： | 冷艺 栾茂田 许成顺 马太雷 |
| 作者单位： | 1. 大连理工大学海岸和近海工程国家重点实验室,辽宁大连,116024;大连理工大学土木水利学院岩土工程研究所,辽宁大连,116024;中交水运规划设计院有限公司,北京,100007 2. 大连理工大学海岸和近海工程国家重点实验室,辽宁大连,116024;大连理工大学土木水利学院岩土工程研究所,辽宁大连,116024 3. 北京工业大学建筑工程学院,北京,100022 |
| 基金项目： | 国家自然科学基金资助项目(50579006,50639010) |
| 摘 要： | 应用大连理工大学研发的土工静力-动力液压-三轴扭转多功能剪切仪,控制试验过程的平均主应力和中主应力系数保持恒定,改变主应力方向,针对相对密度为30%、60%的饱和福建标准砂,进行一系列排水单调剪切试验.主要探讨排水条件下主应力方向和相对密度对砂土应力-应变关系、有效内摩擦角及体变特性的影响.试验结果表明:主应力方向对饱和砂土的单调剪切特性具有显著影响;不同主应力方向对应的应力-应变关系所表现出的变化规律取决于水平面与竖直面上受到的剪应力作用,相变及峰值广义剪应力和有效内摩擦角与主应力方向角之间存在抛物线型关系.同时相对密度的影响也不容忽略;同中密砂相比,松砂的剪缩现象明显,其峰值抗剪强度降低. |
| 关 键 词： | 主应力方向 排水单调剪切 相变状态 峰值状态 有效摩擦角 |
Experimental research on behavior of saturated sand under drained monotonic shearing |
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| LENG Yi,LUAN Maotian,XU Chengshun,MA Tailei.Experimental research on behavior of saturated sand under drained monotonic shearing[J].Journal of Dalian University of Technology,2009,49(1):98-104. | |
| Authors: | LENG Yi LUAN Maotian XU Chengshun MA Tailei |
| Institution: | LENG Yi1,2,3,LUAN Mao-tian1,XU Cheng-shun4,MA Tai-lei1,21.State Key Laboratory of Coastal , Offshore Engineering,Dalian University of Technology,Dalian 116024,China,2.Institute of Geotechnical Engineering,School of Civil , Hydraulic Engineering,3.CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,4.College of Architecture , Civil Engineering,Beijing University of Technology,Beijing 100022 |
| Abstract: | The experimental tests of Fujian standard sand with the relative density of 30% and 60% were performed by using the soil static and dynamic universal triaxial and torsional shear apparatus which was developed in Dalian University of Technology.A series of drained monotonic shearing tests were conducted under complex stress conditions with various orientations of principal stress,constant mean principal stress and coefficient of intermediate principal stress.Based on the comparative experimental results,the ... |
| Keywords: | orientation of principal stress drained monotonic shearing phase-transformation state peak state effective friction angle |
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