| p-s平面上不同应力路径的非饱和土力学特性研究 |
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| 引用本文： | 苗强强,陈正汉,朱青青.p-s平面上不同应力路径的非饱和土力学特性研究[J].岩石力学与工程学报,2011,30(7):1496-1501. |
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| 作者姓名： | 苗强强 陈正汉 朱青青 |
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| 作者单位： | (1. 后勤工程学院 建筑工程系，重庆 401331；2. 西北民族大学 化工学院，甘肃 兰州 730000) |
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| 基金项目： | 国家自然科学基金资助项目，后勤工程学院2008年研究生创新专项基金 |
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| 摘 要： | 通过7个吸力和净平均应力同时变化的非饱和含黏砂土固结试验，研究7条不同应力路径的试验在p-s-v，p-s- ，p-s- 和p-s-w空间曲线形状随角度?(净平均应力和吸力夹角)的变化规律，分析引起变化的机制，指出净平均应力是决定体变的重要因素，吸力是决定水分变化的首要条件。并探讨p-s平面上7条应力路径屈服点连线轨迹的统一表达式，建立p-s平面上屈服点连线的统一抛物线表达式。最后运用该公式预测已有的试验数据，预测结果较为理想，说明该式预测p-s平面上不同应力路径各屈服点变化规律是较为可靠的。
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| 关 键 词： | 土力学应力路径非饱和土吸力净平均应力 |
| 收稿时间： | 2011-01-13; |
STUDY OF MECHANICS CHARACTERISTIC OF UNSATURATED SOILS WITH DIFFERENT STRESS PATHS ON P-S PLANE |
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| MIAO Qiangqiang,CHEN Zhenghan,ZHU Qingqing.STUDY OF MECHANICS CHARACTERISTIC OF UNSATURATED SOILS WITH DIFFERENT STRESS PATHS ON P-S PLANE[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(7):1496-1501. |
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| Authors: | MIAO Qiangqiang CHEN Zhenghan ZHU Qingqing |
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| Affiliation: | (1. Department of Architectural Engineering，Logistical Engineering University of PLA，Chongqing 401331，China；;
2. College of Chemical Engineering，Northwest Minority University，Lanzhou，Gansu 730000，China) |
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| Abstract: | Through 7 clayey sand consolidation tests of suction and net mean stress both changing,the variation laws of 7 stress paths were studied in the p-s-v,p-s-,p-s-and p-s-w spaces with the variation between suction and net mean stress included angle.Where p is net mean stress;s is suction;v is specific volume;is volume deformation;is volume deformation in water phase;w is moisture content;is angle.The test results indicate that net mean stress is a very important factors to the volume deformation;the suction is... |
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| Keywords: | soil mechanics stress path unsaturated soils suction net mean stress |
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