Abstract
In order to give full play to the supporting role of the feet-lock anchor pipe in the tunnel with unconsolidated formation, it is necessary to obtain the optimal construction parameters of the feet-lock anchor pipe. Based on a tunnel project on the Huaping–Lijiang Expressway in Yunnan Province, this paper conducted numerical simulation and field test analysis. By comparing the arch subsidence and horizontal convergence of the supporting structure when the feet-lock anchor pipe with different parameters was constructed, the paper explored the characteristics and causes of the influence of construction parameters on the feet-lock effect. The results show that the feet-lock anchor pipes can effectively reduce the deformation of the supporting structure in unconsolidated formation, and the arch subsidence and horizontal convergence of the tunnel are significantly reduced. In the construction parameters of feet-lock anchor pipes, the angle and length of the anchor pipe have an obvious influence on the feet-lock effect, but the height has little influence. By combining the research conclusion with engineering application and considering the operability and economy, the optimal construction parameters for this kind of formation are proposed.
Publication Date
3-17-2023
DOI
10.14048/j.issn.1671-2579.2023.01.028
First Page
162
Last Page
167
Submission Date
March 2025
Recommended Citation
Heqing, TANG; Xishan, JIANG; and Peng, YANG
(2023)
"Study on parameter optimization of feet‐lock anchor pipes of tunnels in unconsolidated formation,"
Journal of China & Foreign Highway: Vol. 43:
Iss.
1, Article 28.
DOI: 10.14048/j.issn.1671-2579.2023.01.028
Available at:
https://zwgl1980.csust.edu.cn/journal/vol43/iss1/28
Included in
Construction Engineering and Management Commons, Other Civil and Environmental Engineering Commons, Statistical Methodology Commons, Structural Materials Commons, Transportation Engineering Commons