摘要
针对福州市橘园洲防洪堤的K4+000断面和K6+260断面的饱和砂基进行液化稳定分析,采用动剪应力对比法进行液化判别.地震剪应力采用考虑动孔压的上升对动剪切模量的修正作用的三维二相非线性有限元法计算,抗液化剪应力采用动力试验确定相应的参数引入经验公式进行修正计算,得到了各断面下的液化分布图.
By applying shearing stress antithesis on liquefied analysis,the K4＋000 monitor cross section and K6＋260 monitor cross section of Juyuanzhou protection levee in Fuzhou Aera are studied for liquefied stabilization analysis.Dynamic shear stress contrast methord is used for distinguishing liquefaction,during which three-dimensional and two-phase nonlinear FEM based on the shearing modulus influenced by mechanical pore water pressure is applied to its seismic shear stress.Meanwhile,empirical formula is introduced to determine its anti-liquefaction shear stress,with parameters defined by dynamical experiment.Thus the liquid distribution of various sections is worked out,which provides a theoretical basis for the liquefication analysis of the flood protection levee.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第1期135-141,共7页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省自然科学基金资助项目(2008J0154
2009J01250)
福建省省属高校专项课题资助项目(2006F5002)
关键词
防洪堤
有限元分析
饱和砂土
液化分析
福州
橘园洲
protection levee
FEM analysis
saturated sandy clay
liquefication analysis
Fuzhou
Juyuanzhou
