粉土动强度试验研究
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摘要
文中对重塑的粉土试样施加正弦波和任意波轴向荷载,进行应变控制的动三轴试验。根据试验结果,分析和比较2种不同波形振动荷载下粉土的动强度和变形特性。研究结果表明:固结条件相同,振动频率为1Hz,任意波振动荷载作用下粉土的动强度较正弦波下的稍小;任意波下粉土试样产生的动应变比正弦波下的大。
By setting axial load of sine and arbitrary waves on the remodeling silt samples,strain-controlled dynamic triaxial tests are conducted to study the dynamic strength and strain of the silt under vibrating loads with two different waveforms.The test results indicate that in the case of the same consolidation conditions and the vibration frequency of 1 Hz,the dynamic strength of silt under arbitrary wave is smaller than that under sine wave,and the dynamic strain of silt under arbitrary wave is contrary to that under sine wave.
引文
[1]林本海,李业茂.粉土工程性质的探讨[C]∥中国土木工程学会第八届土力学及岩土工程学术会议论文集,北京:万国学术出版社,1999,181-184.
    [2]石兆吉,郁寿松,王余庆,等.饱和轻亚黏土地基液化可能性判别[J].地震工程与工程振动,1984,4(3):71-81.
    [3]袁晓铭,孙锐,孟上九.土体地震大变形分析中Seed有效循环次数方法的局限性[J].岩土工程学报,2004,26(2):207-211.
    [4]Seed HB,Idriss I M.Simplified procedure for evaluating soil liquefaction potential[J].Soil Mechanics and Foundations Division,ASCE,1971,(SM9):1249-1273.
    [5]黄永林.南京砂的液化与判别[J].世界地震工程,2001,17(1):69-74.
    [6]陈敬松,张家生,孙希望.饱和尾矿砂动强度特性试验结果与分析[J].水力学报,2006,37(5):603-607.
    [7]王峻,王兰民,李兰.不同地震荷载对黄土动模量和阻尼比的影响[J].自然灾害学报,1992,1(4):75-79.

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