研究液化的三维动力非线性有限元法

THREE DIMENSIONAL DYNAMIC NONLINEAR FINITE ELEMENT METHOD FOR LIQUEFACTION ANALYSIS

提出结点等价体积和三维结点等价流量的概念，综合研究了孔隙水压力在地震过程中发展和消散，考虑了正应力、剪应力及循环次数等因素对其的影响．推导出液化问题的三维动力非线性有限元理论公式．实例分析说明理论推导正确，运算简捷，对工程有实用价值．

In this paper the 3 Dimensional nodal equivalent volume and equivalent flow are put forward. The development and dissipation of porewater pressure in the seismal process have been researched, and normal stress, shear stress and cycle number are considered. By using these conceptions 3 Dimensional dynamic nonlinear finite element formula have been worked out. The results show that this liquefaction analysis is feasible and its compution is clear and quick, so it's of great value to engineering practice.