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| Finite layer analysis for excavation rebound considering consolidation |
| Received:December 04, 2007 |
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| DOI：10.7511/jslx20096030 |
| KeyWord:consolidation excavation rebound finite layer method |
| Author | Institution |
| 宋林辉 |
南京工业大学 力学部,南京 |
| 梅国雄 |
南京工业大学土木工程学院,南京 |
| 宰金珉 |
南京工业大学土木工程学院,南京 |
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| Abstract: |
| According to the former researches on deformation of foundation pit, it’s known that the influence of rebound on stability of pit and post-settlement of construction is great. However, among the existing studies, the discussion on effect of consolidation on rebound is few. Therefore, the consolidation finite layer theory is introduced to analyze the dynamic process of soil consolidation during excavation and dissipation law of negative pore pressure with time. And the expression of finite layer method on excavation rebound considering consolidation is established by adding coupling matrix of excavated area and seepage matrix of excavated area. At the same time, the computer program is developed. The results show that negative pore pressure of bottom soil ranges from negative to zero, and it appears the Mandel-Cryer phenomena. While the rebound of bottom soil is increasing with time. And for whole excavated area, the distribution of rebound is similar to the shape of reverse hollowware. |
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