| 主应力偏转角对砂砾料动力特性影响的试验研究 |
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| 引用本文： | 付磊,王洪瑾,周景星. 主应力偏转角对砂砾料动力特性影响的试验研究[J]. 岩土工程学报, 2000, 22(4): 435-440 |
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| 作者姓名： | 付磊 王洪瑾 周景星 |
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| 作者单位： | 北京市水利规划设计研究院!北京；100044；清华大学水电系!北京；100084； |
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| 摘 要： | 利用空心圆柱动扭剪仪研究初始主应力偏转角α0 对一种砂砾料动强度、残余应变发展的影响。试验结果表明初始主应力偏转角α0 对土的动强度、残余孔隙水压力及残余应变的发展都具有不可忽视的重要影响。随着α0 的增大 ,动强度明显降低 ,残余孔隙水压力减小 ,残余应变发展速率加快
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| 关 键 词： | 主应力偏转角 空心圆柱动扭剪仪 动强度 残余孔隙水压力 残余应变 |
Effect of the initial rotation angle of principal stress on the dynamic properties of soil |
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| Fu Lei,Wang Hongjin,Zhou Jingxing. Effect of the initial rotation angle of principal stress on the dynamic properties of soil[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(4): 435-440 |
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| Authors: | Fu Lei Wang Hongjin Zhou Jingxing |
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| Affiliation: | Beijing Municipal Institute of Hydraulic Engineering Planning Design and Research Beijing 100044 Department of Hydraulic Engineering Tsinghua University Beijing 100084 |
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| Abstract: | In this paper,a series of tests on Miyun sand-gravel specimens using a hollow cylinder torsional shear apparatus have been carried out to investigate the effect of α 0(the inital rotation angle of principal stress),p 0(average principal stress)and η 0 (stress ratio )on dynamic strength and pore pressure. The test results show that α 0 has important effects on the dynamic properties of soil. With the increase of α 0,dynamic strength decreases markedly. |
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| Keywords: | angle of principal stress rotation dynamic strength hollow cylinder torsional shear apparatus residual pore pressure residual strain |
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