| 修正剑桥模型在真空预压土体强度研究中的应用 |
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| 引用本文： | 颜立明,彭劼.修正剑桥模型在真空预压土体强度研究中的应用[J].水利与建筑工程学报,2012(6):128-132. |
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| 作者姓名： | 颜立明 彭劼 |
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| 作者单位： | 河海大学岩土工程科学研究所;河海大学岩土力学与堤坝工程教育部重点实验室 |
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| 摘 要： | 基于修正剑桥模型里的临界状态模型,用临界状态来描述土体的不排水剪切强度,利用现场实测数据反推不排水剪切强度公式中三个参数的值,可以得到三轴条件下不排水剪切强度的理论公式。并且通过现有的现场实测数据考察了该不排水剪切强度公式的合理性,计算结果与现场实测数据基本吻合,验证了本文提出的公式能够较好地预测基于临界状态模型的不排水抗剪强度。即适用于温州工程现场区域土体性质的不排水抗剪强度的计算公式,可在类似工程中推广与应用。
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| 关 键 词： | 修正剑桥模型 真空预压 不排水抗剪强度 临界状态土力学 软粘土 |
Application of Modified Cam-clay Model in Research on Shear Strength of Soil Mass by Vacuum Preloading |
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| YAN Li-ming,PENG.Application of Modified Cam-clay Model in Research on Shear Strength of Soil Mass by Vacuum Preloading[J].Journal of Water Resources Architectural Engineering,2012(6):128-132. |
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| Authors: | YAN Li-ming PENG |
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| Affiliation: | 1,2(1.Geotechnical Engineering Research Institute,Hohai University,Nanjing,Jiangsu 210098,China;2.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering Hohai University,Nanjing,Jiangsu 210098,China) |
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| Abstract: | Based on the critical state model in the modified Cam-clay model,the undrained shear strength of soil is described here with critical state,the field test data are used for the back analysis of the parameters,and the theoretical formula of the undrained shear strength of the soil under triaxial condition could be obtained,then the accuracy of the theoretical formula is verified with existing field test data.The calculation results are basically consistent with the field test data,verifying that the proposed theoretical formula could better predict the undrained shear strength based on the critical state model.That is,the theoretical formula of the undrained shear strength applied to Wenzhou's project could be promoted and applied in similar projects. |
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| Keywords: | modified Cam-clay model vacuum preloading undrained shear strength critical state soil mechanics soft clay |
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