Evaluation of monotonic and non-monotonic dissipation test results |
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| Authors: | Em?ke Imre Pál Rózsa Lachlan Bates Stephen Fityus |
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| Institution: | 1. Szent István University, Ybl Miklós Civil Eng. Faculty, Budapest, Hungary;2. Budapest University of Technology and Economics, Department of Geotechnics, Budapest, Hungary;3. Budapest University of Technology and Economics, Department of Computer Science and Information Theory, Budapest, Hungary;4. The School of Engineering, The University of Newcastle Callaghan, Newcastle, Australia |
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| Abstract: | The dissipation test evaluation method presented here employs: (i) a point-symmetric, linear, coupled consolidation model with a new boundary condition and a new time factor, (ii) an automatic and mathematically precise, non-linear, inverse problem solver which includes some reliability testing methods and a kind of regularization technique, and (iii) a method to identify the initial condition.The evaluation method is equally applicable to pore water pressure data displaying monotonic or non-monotonic time variation, with the only difference that the initial condition is identified differently during the inverse problem solution.The necessary testing time is very short provided that the pore water pressure is measured well above the tip. This is attributed to the ability of the one-dimensional, linear consolidation model to account for the geometry and the unloading effects that occur when steady penetration of the static cone penetrometer ceases. |
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