西安公路交通大学学报 |
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三维非轴对称饱和土动力刚度矩阵 张玉红 黄义 摘 要:基于三维非轴对称饱和弹性土层动力响应分析的基本解,推导出有限厚饱和土层和饱和半空间精确动力刚度矩阵,再由层间内界面连续条件建立三维非轴对称分层饱和土体总刚方程。该方法不要求对土体自然层(有限厚度)作薄层离散,也可方便处理层内荷载的影响;总刚方程可直接用于计算边界元法中边界积分方程要求的影响函数(GREEN函数)。 The Dynamic Stiffness Matrix of the 3-D Non-axisymmetric Saturated Soils ZHANG Yu-hong(Department of Civil Engineering, Foshan University, Foshan
528000, China) Abstract:Based on the fundamental
solutions of governing dynamic equations of the 3-D non-axisymmetric saturated soils,a
layered saturated stiffness matrix and a saturated half-space stiffness matrix are derived
exactly.The global stiffness equation of a multi-layered half-space is assembled by using
the layer and half space stiffness matrices on the basis of continuity of traction s and
fluid flow at layer interfaces,which would not need to disperse the natural layered soils
(finite thickness),and it is easy to deal with in-layer loading in global stiffness
equation,and the GREEN's functions needed by boundary integral equation in boundary
element method can be obtained directly by means of global stiffness equation. |
| 基金项目:国家自然科学基金资助项目(59678003) 作者简介:张玉红(1963-),女,河南荥阳人,佛山大学副教授,博士 作者单位:张玉红(佛山大学 土建系,广东 佛山 528000) 黄义(西安建筑科技大学,陕西 西安 710055) 参考文献: [1]PHILIPPACOPOULOS A J. Waves in a partially saturated medium due
to surface loads[J]. J.Eng. Mech., ASCE, 1988,114:1740—1759. 收稿日期:2000年5月8日 出版日期:2001年1月1日 |