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| Analysis of bearing capacity of root-caisson with flexual roots |
| Received:March 27, 2008 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20103021 |
| KeyWord:root-caisson flexual roots bearing capacity load transfer method elastic foundation |
| Author | Institution |
| 胡丰 |
东南大学 土木学院,南京 |
| 龚维明 |
东南大学 土木学院,南京 |
| 童小东 |
东南大学 土木学院,南京 |
| 殷永高 |
安徽省高速公路总公司, 合肥 |
| 单建 |
东南大学 土木学院,南京 |
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| Abstract: |
| Based on the load transfer method and the Winkler beam theory, considering the bending effects of roots and reduced effects from the overlapping of roots, an elastic solution of bearing capacity of root-caisson with flexual roots is deducted. The computational values of displacement are close to the test results in elastic range. The vertical distributions of displacement and axial force curves are presented. We also analyze the bearing behavior of root and the proportion of each part of soil resistance. From the computational results, it is concluded that the bearing capacity of root-caisson is superior to the traditional caisson foundation, so the root-caisson can be utilized in the bridge engineering. However, as the bending effects of roots reduce the bearing capacity of root-caisson, improving the bending stiffness of roots is particular necessary. |
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