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波浪作用下成层海床孔隙水压力响应的简化分析

, PP. 156-160

Keywords: 成层海床,孔隙水压力,液化,波浪荷载,简化分析

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Abstract:

采用不排水条件下孔隙水压力发展模式,作为Terzaghi一维固结方程中考虑波浪循环作用所引起的孔隙水压力源项,对于成层海床建立了推广的一维动力固结方程,运用数理方程中的分离变量法与Green函数求解了成层海床在波浪作用下残余孔隙水压力的发展规律,进而对成层海床的液化势进行了评判。对比计算与分析表明,海床表层土的渗透性及其厚度对于海床的整体抗液化性能具有显著的影响,低渗透性的表层导致海床孔隙水压力的显著积累,此时表层置换法是防治液化的有效途径。

References

[1]  Seed H B,Martin P P,Lysmer J.Pore-water pressure changes during soil liquefaction[J].Journal of the Geotechnical Engineering Division,ASCE,1976,102(G T2):323-346.
[2]  Booker J R,Rahman M S,Seed H B.GA DFLFA-Acomputer program for the analysis of pore pressure generation and dissipation during cycle or earthquake loading[R].Report No UCB/EERC-76/24.Berk ley:University of California,1976.
[3]  栾茂田,钱令希.层状饱和砂土振动孔隙水压力扩散与消散简化解法[J].大连理工大学学报,1995,35(2):216-221.
[4]  Mcdougal W G,Tsai Y T,Liu P L-F,et al.Waveindu ced porewater pressure accum ulation in marine soils[J].Journal of Off shore Mechanics and Arctic Engineering,1989,111:111.
[5]  Seed H B,Rahman M S.Wave-induced pore pressure in relation to ocean floor stability of cohesion lesssoils[J].Marine Geotechnology,1978,3:123-150.
[6]  杨少丽,沈渭铨,杨作升.波浪作用下海底粉砂液化的机理分析[J].岩土工程学报,1995,17(4):28-37.
[7]  Carter J P,Booker J R,Small J C.The analysis of finite elastro-plastic consolidation[J].International Journal for Numerical and Analytical Methods in Geomechanics,1979,3:107-129.
[8]  刘占阁,栾茂田,许成顺,等.成层非均质土一维固结的简化分析.第九届全国水利水电青年学术交流会论文集[C].大连:大连理工大学出版社,2002.377-380.
[9]  Madsen O S.Wave-induced pore pressure and effective stresses in aporousbed[J].Geotechnique,1978,28(4):377-393.

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