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| Research of negative friction for pile groups under surface load |
| Revised:May 22, 2002 |
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| DOI：10.7511/jslx20032034 |
| KeyWord:negative friction,Biot consolidation,pile groups,rheology,Fredholm integral equation |
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| Abstract: |
| The negative friction problem of pile groups under the surface load is studied by using Biot's consolidation theory and integral equation method. The second kind of Fredholm integral equations of the pile groups under the action of circular load in saturated soil is obtained by using the fundamental solution. The integral equations can be simplified by mean of Laplace transform methods. By the numerical solution of the integral equations and the corresponding inverse integral transforms the displacement, axial force, pore pressure and shear stress of the pile groups' and pore pressure along the pile groups' axis are obtained. |
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