粉土液化特性的试验研究  

The reseach on the silty soil liquefaction property

作　　者：党改红[1] 王国省[1] 朱小可[2] 

机构地区：[1]浙江林学院园林工程学院 [2]浙江工业大学

出　　处：《山西建筑》2006年第15期75-76,共2页Shanxi Architecture

摘　　要：利用TYD-20动三轴实验机对杭州湾附近的近海粉土,模拟不同的波浪荷载作用下相同固结比的不排水动三轴的动强度和液化试验,对所得的试验结果进行比较,研究频率改变对液化特性的影响,从而总结不同的振动频率和不同的振幅对粉土液化强度的影响程度,为判断粉土液化的可能性和附加变形提供科学有效的分析方法。The silty soil, near the Hangzhou Gulf, is tested in undrainage dynamical triaxial strength and liquetaction tests wtth different compression ratios, by TYD-20 dynamical triaxial test machine simulating different wave loadings. The affection of frequency variation to liquefaction property is obtained with the changement of wave loading frequency and the comparison of test results. It is concluded that the degree of influence on liquefaction intensity under different vibration frequencies and amplitudes, which supplies an scientific and effective analytical ap- proach of determining the possibility of silty soil liquefaction and additional deformation.

关 键 词：粉土 液化强度 剪切应力 循环周期 

分 类 号：TU441.3[建筑科学—岩土工程]