|
|
|
| Effect of Deep Underground Water Recharge on LongTerm Settlements of Pile Foundations
|
| HUANG Yizhang1,SHI Yujin1，2,CHEN Jinjian1,WANG Jianhua1
|
| （1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China;
2. Shanghai Institute of Geological Survey, Shanghai 200072, China） |
|
|
|
|
Abstract Abstract： Artificial recharge in deep strata is an effective method to prevent land subsidence, and make the deep strata upheave to some extent. The pile foundations of elevated road are relatively deep so that the deformation of deep strata will greatly affect the elevated road. Using the numerical method, the elevated pile and the behavior of the surrounding soil at pumping and recharge loads were simulated and its deformation characteristics were discussed based on the coupled theory. The result shows that groundwater pumping can cause a large settlement of elevated road, while the artificial recharge can control the settlement effectively. Regional land subsidence is smaller than the elevated settlement, but the deformation tendency matches the elevated road well. Besides, based on an engineering project, the longterm deformation characteristic of elevated road at underground water recharge was simulated. The study shows that numerical results agree with the filed data, and the deformation characteristics of elevated piles are mainly influenced by deep strata. Using parameter analysis, the basic laws of elevated deformation were obtained, providing reference for the prediction of longterm settlement of elevated piles.
|
|
Received: 21 January 2015
Published: 28 March 2016
|
|
|
|
|
|
|
|
|
