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| Application of composite element method in sand drain ground finite element analysis |
| Revised:July 08, 2002 |
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| DOI：10.7511/jslx20041005 |
| KeyWord:sand-wall composite element,smearing,well resistance,sand drain ground,finite element analysis |
| Ding Li~* Ling Daosheng Wang Lizhong Chen Yunmin |
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| Abstract: |
| Based on the application of the domain-by-domain integration technique, a new element, sand-wall composite element, is provided for the plane strain finite element analysis of sand drain ground in this paper. The general element was improved in which both the effects of smearing and well resistance were taken into account inside the composite sand-wall element, therefore the drawback of the huge amount of element number and node number adopted in the general finite element analysis is overcame. The sand-wall composite element is incorporated in the finite element procedure USAP. Compared with other solutions of sand drain ground under plane strain condition and finite element analysis software PLAXIS, the calculated result of the improved element is reasonable and models both the effects of smearing and well resistance well. Compared with the general finite element analysis, it's proved that the composite element could reduce the calculation significantly whereas the accuracy of calculation is assured. |
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