| 轴对称条件下水泥土强度特性试验研究 |
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| 引用本文： | 宋新江. 轴对称条件下水泥土强度特性试验研究[J]. 水利水电技术, 2011, 42(8) |
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| 作者姓名： | 宋新江 |
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| 作者单位： | 安徽省水利部淮河水利委员会水利科学研究院,安徽蚌埠,233000 |
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| 摘 要： | 通过水泥土等p三轴剪切试验、常规三轴固结排水剪切试验(CD)与三轴固结不排水剪切试验(CU),对水泥土力学特性进行研究,讨论水泥土的应力～应变曲线变化特点和强度特性。试验结果表明:水泥土的应力～应变曲线为软化型,软化程度与围压有关;不同应力路径对水泥土强度有一定的影响,但影响程度较弱;小围压作用下水泥土具有剪胀性,类似强超固结土;高围压下,水泥土类似弱超固结土;残余强度均随围压的增加呈线性增大,CD试验残余强度高于CU试验,残余强度与峰值强度的比值随围压的增大而增大,增大速率逐渐减小;水泥土CU试验的有效强度包线与CD试样强度包线基本一致。
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| 关 键 词： | 水泥土 等p三轴剪切试验 三轴固结排水剪切试验 三轴固结不排水剪切试验 强度 |
Experimental study on strength characteristics of soil-cement under axial symmetry condition |
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| SONG Xinjiang. Experimental study on strength characteristics of soil-cement under axial symmetry condition[J]. Water Resources and Hydropower Engineering, 2011, 42(8) |
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| Authors: | SONG Xinjiang |
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| Affiliation: | SONG Xinjiang(Water Resources Research Institute of Anhui Province and Huaihe River Commission,MWR.,Bengbu 233000,Anhui,China) |
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| Abstract: | Based on the constant p triaxial shear test,conventional triaxial consolidation-drained shear test(CD) and triaxial consolidation-undrained shear test(CU),the mechanical property of soil-cement is studied;in which the variation characteristics of the stress-strain curve,and the strength characteristics of the soil-cement are discussed.The results indicate that:(a) the stress-strain curve of the soil-cement behaves as strain softening,and the soften rate is related to confining pressure;(b) different stress ... |
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| Keywords: | soil-cement constant p triaxial shear test triaxial consolidated drained compression shear test triaxial consolidated undrained compression shear test strength |
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