压缩波在饱和粘土中传播机理数值模拟及分析  

Numerical simulation and analysis of compressional wave propagation in saturated clay

作　　者：刘健[1] 李选正 于晓龙 Liu Jian;Li Xuanzheng;Yu Xiaolong(Civil Engineering College, Shandong University, Jinan 250061, China;Engineering Construction Center of Yellow River Shandong Bureau, Jinan 250011, China)

机构地区：[1]山东大学土建与水利学院,山东济南250061 [2]山东黄河河务局工程建设中心,山东济南250011

出　　处：《山西建筑》2018年第9期35-37,共3页Shanxi Architecture

摘　　要：利用ABAQUS有限元数值计算软件,模拟压缩波在饱和粘土中的传播机理,研究压缩波在饱和粘土中的波动特性。研究表明:当荷载频率较低时,例如小于1 Hz时,P1波主导了粘土的动力响应,P2波对粘土动力响应影响较小。当荷载频率较大时,例如大于5 Hz时,P1和P2波分别在低渗透系数和高渗透系数范围内主导着粘土的动力响应。当渗透系数大于10-4m/s时,会出现P1波到P2波的转换。ABAQUS （FE method） is used to simulate compressional wave propagation mechanism insaturated clay and to investigate the dynamic characteristics of compressional waves. The results of the study shows that： when the load frequency is relatively low, for example, less than 1 Hz, the PI wave dominates the dynamic response of clay structures, while the P2 wave has less effect ; when the loading frequency is relatively large, for example, greater than 5 Hz, PI wave and P2 wave control the dynamic response of soil structures in the range of low permeability and high permeability respectively. When the permeability is more than 10^-4 m/s , the transition from the PI wave to the P2 wave is observed.

关 键 词：压缩波 饱和粘土 ABAQUS P1波 P2波 

分 类 号：TU435[建筑科学—岩土工程]