| 结构性软土力学特性的试验研究 |
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| 引用本文： | 孙德安,陈波.结构性软土力学特性的试验研究[J].土木工程学报,2011(Z2):65-68. |
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| 作者姓名： | 孙德安 陈波 |
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| 作者单位： | 上海大学; |
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| 基金项目： | 上海大学第五届研究生创新基金(SHUCX111014) |
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| 摘 要： | 对扰动程度不同的原状样和重塑样分别进行单向固结试验和固结排水及不排水三轴剪切试验,研究结构性对上海软土的变形、强度特性的影响。压缩试验结果表明:结构性强的原状样具有明显的结构屈服应力,结构性一般的原状样,结构屈服应力不明显;原状样比重塑样具有更大的压缩指数Cc和膨胀指数Cs。剪切试验结果表明:相同固结压力下,结构性强的土样强度不仅低于结构性弱的土样强度,而且低于重塑样的强度。这是由剪切时土样的孔隙比差异造成的。若消除孔隙比的影响,则结构性将使原状样具有更高的强度,且结构性越强,土体强度越高。
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| 关 键 词： | 原状土 重塑土 结构屈服应力 孔隙比 |
Experimental study on the mechanical behavior of structural soft clay |
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| Sun Dean Chen Bo.Experimental study on the mechanical behavior of structural soft clay[J].China Civil Engineering Journal,2011(Z2):65-68. |
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| Authors: | Sun Dean Chen Bo |
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| Affiliation: | Sun Dean Chen Bo (Shanghai University,Shanghai 200072,China) |
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| Abstract: | A number of oedometer compression tests and consolidated-drained and undrained triaxial shear tests on undisturbed and reconstituted samples of Shanghai mucky clay,have been carried out to study the difference in compression and shear characteristics between them.Based on the comparison of compression curves of undisturbed and reconstituted samples,it is found that the compression curves of undisturbed samples have the structure yield stress which is obvious for samples taken by good quality,but not obvious... |
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| Keywords: | undisturbed soil reconstituted soil structure yield stress void ratio |
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