Lamb's integral formulas of two-phase saturated medium for soil dynamic with drainage  

作　　者：丁伯阳 党改红 袁金华 

机构地区：[1]College of Civil Engineering and Architecture,Zhejiang University of Technology [2]Department of Civil Engineering,Zhejiang Agriculture and Forest University

出　　处：《Applied Mathematics and Mechanics(English Edition)》2010年第9期1113-1124,共12页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(No.10572129)

摘　　要：When dynamic force is applied to a saturated porous soil, drainage is common. In this paper, the saturated porous soil with a two-phase saturated medium is simulated, and Lamb＇s integral formulas with drainage and stress formulas for a two-phase saturated medium are given based on Biot＇s equation and Betti＇s theorem （the reciprocal theorem）. According to the basic solution to Biot＇s equation, Green＇s function Gij and three terms of Green＇s function G4i, Gi4, and G44 of a two-phase saturated medium subject to a concentrated force on a spherical coordinate are presented. The displacement field with drainage, the magnitude of drainage, and the pore pressure of the center explosion source are obtained in computation. The results of the classical Sharpe＇s solutions and the solutions of the two-phase saturated medium that decays to a single-phase medium are compared. Good agreement is observed.When dynamic force is applied to a saturated porous soil, drainage is common. In this paper, the saturated porous soil with a two-phase saturated medium is simulated, and Lamb＇s integral formulas with drainage and stress formulas for a two-phase saturated medium are given based on Biot＇s equation and Betti＇s theorem （the reciprocal theorem）. According to the basic solution to Biot＇s equation, Green＇s function Gij and three terms of Green＇s function G4i, Gi4, and G44 of a two-phase saturated medium subject to a concentrated force on a spherical coordinate are presented. The displacement field with drainage, the magnitude of drainage, and the pore pressure of the center explosion source are obtained in computation. The results of the classical Sharpe＇s solutions and the solutions of the two-phase saturated medium that decays to a single-phase medium are compared. Good agreement is observed.

关 键 词：explosive field drainage dynamic response Lamb＇s integral formula 

分 类 号：O313[理学—一般力学与力学基础]