关键词：北江大堤；无害管涌；砂模型试验；双层地基；渗流临界坡降 [gap=8213]Key words: levee; harmless seepage piping; model test; stratified foundation; critical seepage gradient
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As to stratified foundation, influences of the thickness and embedment depth of soft soil stratum on velocity admittance of block on dual and three layered ground are primarily studied.
对于层状地基,重点研究双层和三层地基上块体导纳曲线受软土层厚度、夹层厚度和埋置深度等的影响。
参考来源 - 复合地基动力特性及其应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
On the basis of above mentioned formulas, the calculation on elastic moduli of stratified foundation is made with direct method and a corresponding calculation software programmed.
以此为基础，利用直接法进行分层弹模计算，并编制了相应的计算软件。
As to stratified foundation, influences of the thickness and embedment depth of soft soil stratum on velocity admittance of block on dual and three layered ground are primarily studied.
对于层状地基，重点研究双层和三层地基上块体导纳曲线受软土层厚度、夹层厚度和埋置深度等的影响。
The hingcd-member method is used in calculation and the model of stratified summation method specified in the Code is adopted as the foundation soil.
计算方法采用连杆法，地基模型采用规范规定的分层总和法模型。
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