| 试样高度对粗粒土剪切性能的影响 |
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| 引用本文： | 龚超凡,曹志翔,宋新伟,张玲洁,袁仕方. 试样高度对粗粒土剪切性能的影响[J]. 水电能源科学, 2021, 39(1): 139-141 |
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| 作者姓名： | 龚超凡 曹志翔 宋新伟 张玲洁 袁仕方 |
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| 作者单位： | 西藏农牧学院水利土木工程学院,西藏林芝860000;西藏农牧学院水利土木工程学院,西藏林芝860000;河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 |
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| 基金项目： | 河海大学水文水资源与水利工程科学国家重点实验室开放研究基金项目(2016490311);西藏自治区自然科学基金项目(XZ2017ZRG-34(Z))。 |
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| 摘 要： | 为研究不同试样高度粗粒土剪切性能的差异,运用DHJ50-2型叠环式剪切试验机,对1?2 mm粗粒土组成的3种干密度土样,在4种试样高度下进行直剪试验,探究试样高度改变对粗粒土剪切性能的影响.结果表明,不同试样高度粗粒土抗剪强度及其参数在边界摩擦和力链结构共同作用下呈波动变化;咬合力对尺寸变化更加敏感;不同试样高度的剪切...
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| 关 键 词： | 试样高度 粗粒土 直剪试验 剪切性能 |
Influence of Sample Height on Shear Properties of Coarse-grained Soil |
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| GONG Chao-fan,CAO Zhi-xiang,SONG Xin-wei,ZHANG Ling-jie,YUAN Shi-fang. Influence of Sample Height on Shear Properties of Coarse-grained Soil[J]. International Journal Hydroelectric Energy, 2021, 39(1): 139-141 |
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| Authors: | GONG Chao-fan CAO Zhi-xiang SONG Xin-wei ZHANG Ling-jie YUAN Shi-fang |
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| Affiliation: | (Department of Water Conservancy and Civil Engineering,Tibet Agriculture and Animal Husbandry University,Nyingchi 860000,China;State Key Laboratory of Hydrology-Water Resources and HydraulicEngineering,Hohai University,Nanjing 210098,China) |
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| Abstract: | In order to study the shear properties of coarse-grained soil with different sample height,DHJ50-2 type laminated shear tester was used to carry out direct shear test under conditions of 4 sample heights with 3 kinds of dry density for 1-2 mm coarse-grained soil.And the influence of sample height on the shear performance of coarse-grained soil was discussed.The results show that the shear strength and parameters of coarse-grained soil with different sample height fluctuate under the joint action of boundary friction and force chain structure;The resultant force is more sensitive to the size change;The shear curves of different sample heights have the same variation trend;The higher the sample height is,the larger the shear reduction.The results provide a reference for a more comprehensive interpretation of the change of shear properties of coarse-grained soil under the size effect. |
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| Keywords: | height of sample coarse-grained soil direct shear test shear properties |
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