击实粘土固结前后孔隙压力系数的变化及对强度特性的影响

击实粘土固结前后孔隙压力系数的变化及对强度特性的影响 English Version

The Checkout Centre of Foundation Engineering of Chemistry industry Ministry Zhengzhou institute of Technology Dept. of Geology and Geotechnical Engneering Hobal University Naming Yellow River Coaservancy Press

摘要: 本文主要探讨了去实粘土团结前后孔隙压力系数Ｂ值的变化及其对强度特性的影响。试验结果表明，团结前Ｂ值接近１的试样，团结后在不排水状态下承受周围压力增量时Ｂ值小于１，这将引起土体抗剪强度增加；使抗剪强度不能表示为剪前试样承受的有效应力的线性函数；Ｂ值与饱和度Ｓｒ的关系国测试条件不同而不同。本文还对三轴仪底座及试样帽漏水对试验结果的影响，以及影响团结排水量量测和孔隙压力系数Ｂ的因素进行了分析。
- 三轴试验 /
- 饱和度 /
- 孔隙压力系数 /
- 抗剪强度 /
- 团结排水量
Abstract: Changes of POre pressure parameter B of the compacted clay sample before and after consolidation and itseffect on strength properties are dealt with in this paper. Test results show that the test sample with B = 1 beforeconsolidation will give B< 1 after consolidation, so its shear strength increases nonlinearly with the consolidationstress. And the relationship between B and Sr varies with the testing condition. Besides, the dripping effect oftriaxial apparatus base and sample cap on test results and the factors which affect consolidation drainage measurementand B-paramater are also analysed in this paper.
- triaxial test /
- degree of saturation /
- pore pressure parameter /
- shear strength /
- consolidation drainage.