| 饱和砂土相变和峰值状态的研究 |
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| 引用本文： | 赵春雷,张卫华,蔡国庆,胡庆龙.饱和砂土相变和峰值状态的研究[J].应用力学学报,2020(2):595-600,I0009. |
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| 作者姓名： | 赵春雷 张卫华 蔡国庆 胡庆龙 |
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| 作者单位： | 北京城市学院城市建设学部;北京交通大学土木建筑工程学院;中铁工程设计咨询集团有限公司 |
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| 基金项目： | 国家自然科学基金(51478135,51722802,51678041);国家自然科学基金青年基金(51608033);北京市科技新星计划(Z181100006218005);河南省交通运输科技计划(2017B4)。 |
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| 摘 要： | 在实验室内运用TSZ-1全自动三轴仪,对重塑饱和砂土进行了一系列不同排水条件下的三轴剪切试验。通过控制土样的初始孔隙比、围压及其排水条件,设计了三轴试验的方案。对试验结果进行了分析,研究了相变点、峰值点与饱和砂土的初始孔隙比、围压之间的线性规律,并建立了相应关系式,为进一步基于相变和峰值建立饱和砂土的本构关系提供基础。
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| 关 键 词： | 饱和砂土 相变点 峰值点 初始孔隙比 围压 |
Study on the phase transformation and peak state of saturated sand |
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| Zhao Chunlei,Zhang Weihua,Cai Guoqing,Hu Qinglong.Study on the phase transformation and peak state of saturated sand[J].Chinese Journal of Applied Mechanics,2020(2):595-600,I0009. |
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| Authors: | Zhao Chunlei Zhang Weihua Cai Guoqing Hu Qinglong |
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| Institution: | (City Construction Department,Beijing City University,100083,Beijing,China;School of Civil Engineering,Beijing Jiaotong University,100044,Beijing,China;China Railway Engineering Consulting Group Co.,Ltd.,100055,Beijing,China) |
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| Abstract: | In present contribution,a series of traditional triaxial tests of remoulded saturated sand are carried out in the laboratory by TSZ-1 automatic triaxial apparatus.In the tests,the initial void ratio,confining pressure and drainage condition are controlled.Through the analysis of the test results,effects of initial void ratio and confining pressure on the values of phase transformation point and peak point are studied,and a group of corresponding relations are proposed.The studies may provide a basis for the further study of strength and deformation constitutive model for saturated sands. |
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| Keywords: | saturated sands phase transformation point peak point initial void ratio confining pressure |
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