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Mathematical Problems in Engineering
Volume 2015 (2015), Article ID 382427, 12 pages
http://dx.doi.org/10.1155/2015/382427
Research Article

Correspondence Analysis of Soil around Micropile Composite Structures under Horizontal Load

1Beijing Jiaotong University, No. 3, Shangyuancun, Haidian District, Beijing 100044, China
2Beijing Key Laboratory of Track Engineering, Beijing, China
3Beijing Engineering and Technology Research Center of Rail Transit Line Safety and Disaster Prevention, Beijing, China

Received 27 June 2015; Accepted 1 September 2015

Academic Editor: Fazal M. Mahomed

Copyright © 2015 Hai Shi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The current approach, which is based on conformal transformation, is to map micropile holes in comparison with unit circle domain. The stress field of soil around a pile plane, as well as the plane strain solution to displacement field distribution, can be obtained by adopting complex variable functions of elastic mechanics. This paper proposes an approach based on Winkler Foundation Beam Model, with the assumption that the soil around the micropiles stemmed from a series of independent springs. The rigidity coefficient of the springs is to be obtained from the planar solution. Based on the deflection curve differential equation of Euler-Bernoulli beams, one can derive the pile deformation and internal force calculation method of micropile composite structures under horizontal load. In the end, we propose reinforcing highway landslides with micropile composite structure and conducting on-site pile pushing tests. The obtained results from the experiment were then compared with the theoretical approach. It has been indicated through validation analysis that the results obtained from the established theoretical approach display a reasonable degree of accuracy and reliability.