One-Dimensional Shock and Quasi-Static Liquefaction of Silt and Sand
One-Dimensional Shock and Quasi-Static Liquefaction of Silt and Sand
复制标题
粉砂的一维冲击与准静态液化
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
W. Charlie
中科院分区：
文献类型：
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作者：
J. M. Bolton;D. Durnford;W. Charlie
本文总结了对饱和邦尼粉土、Monterey 0/30号砂以及这两种土的混合物的受限试样进行的不排水准静态和冲击压缩试验的结果。试验评估了高强度压缩荷载作用下砂土、粉土和粉砂的孔隙压力响应和液化潜力。准静态试验包括递增幅度的载荷循环，冲击试验包括毫秒压缩波载荷。当砂土承受相等的峰值应变时，冲击和准静态引起的超静孔隙压力大致相等。对于相同的峰值应变，在准静态荷载作用下，粉土和混合物的超静孔压增量显著高于冲击荷载作用下的超静孔压增量。三种土类的孔压比随峰值应变的增大而增大，随有效应力的减小而增大，随孔隙比的增大而增大。
This paper summarizes the results of undrained quasi‐static and shock compression tests performed on confined specimens of saturated Bonny Silt, Monterey No. 0/30 sand, and a mixture of the two soils. The tests evaluated pore pressure response and liquefaction potential of sand, silt and silty‐sand subjected to high intensity compressive loading. The quasi‐static tests consisted of load cycles of increasing magnitude and the shock tests consisted of millisecond compressive wave loadings. Shock and quasi‐static induced excess pore pressures were approximately equal when the sand was subjected to equal peak strains. The silt and the mixture exhibited significantly higher increases in excess pore pressure under quasi‐static loading than under shock loading for the same peak strain. The pore‐pressure ratio of the three soil types increased with increasing peak strain, with decreasing effective stress, and with increasing void ratio.