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结构性土的强度准则
  • 期刊名称:岩土工程学报,28(10): 1248-1252,2006
  • 时间:0
  • 分类:TU317.1[建筑科学—结构工程] TU320.2[建筑科学—结构工程]
  • 作者机构:[1]攀枝花学院土木工程学院,四川攀枝花617000, [2]四川大学水电学院,成都610065
  • 相关基金:国家自然科学基金资助项目(50479007)
  • 相关项目:复杂应力路线下结构性粘土的破损机理及数值模拟
中文摘要:

通过对土料人工处理,可以使其力学特性和强度大为提高,从而有助于建筑物的兴建。通过添加不同含量的水泥,制备了人工胶结土样。然后进行了三轴试验来探讨胶结土的力学特性和强度特点,试验结果表明水泥含量不同导致的颗粒胶结对胶结土的应力—应变、孔压发展、体积变形特性和抗剪强度有很大的影响。最后建议了一个胶结土的抗剪强度表达式,并与实验结果进行对比,表明所建议的抗剪强度表达式具有较好的适用性。

英文摘要:

Treated by adding some kinds of cemented materials,the soils will have better mechanical features and higher strength,contributing to the construction of buildings.The cemented soil samples,prepared artificially with addition of some different contents of cement into the original soil materials here,are sheared under triaxial stress conditions.The mechanical characteristics and strength mechanism of the cemented soils are investigated and it indicates experimentally that the cementation between soil particles has great influence on the stress-strain,pore pressure development,volumetric deformation and shear strength of the soil samples.Finally,a new shear strength criterion of the cemented soils is proposed based on the strength mechanism and it agrees well with the experimental results of the cemented soils.

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