MATEC Web Conf.
Volume 295, 2019Smart Underground Space and Infrastructures – Lille 2019
|Number of page(s)||8|
|Section||Smart Geo-Environment Geotechnics|
|Published online||18 October 2019|
Disturbance effect analysis of pipe jacking construction based on failure approach index
1 Shool of Civil Engineering, Hefei University of Technology, 23009, Hefei, China
2 China Water Huaihe Planning, Design and Research Co., Ltd, 230601, Hefei, China
* Corresponding author: firstname.lastname@example.org
In order to evaluate the influence of pipe jacking construction process on ground subsidence and surrounding buildings, the numerical simulation of the construction process was carried out by FLAC3D, and the failure approach index (FAI) of the rock and soil around the pipeline was calculated to describe quantitatively their risk and damage state. The numerical results show that the final settlements of the buildings around the pipeline are less than the buildings' safety control values. The rock or soil mass within 0.8 times of the pipe diameter are in the excavation damage zone and disturbance zone (0.8≤FAI≤1.3), while outside 0.8 times of the pipe diameter are basically undisturbed (FAI≤0.8).
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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