Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: Li, Taoa; * | Wang, Xiaolonga | Li, Xinkuna | Jia, Xinyua | Wu, Lijiea | Yang, Weihongb
Affiliations: [a] School of Mechanics and Civil Engineering, China University of Mining and Technology(Beijing), Beijing, China | [b] Central Research Institute of Building and Construction CO., LTD. MCC, Beijing, China
Correspondence: [*] Corresponding author. Tao Li, School of Mechanics and Civil Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China. Tel.: +86 13681209442; E-mail: lit@cumtb.edu.cn.
Abstract: Tunnel stability is mainly concerned with the object of symmetric tunnels, shallow buried unsymmetric(SBU) tunnels should also be emphasized as the focus of the computational analysis of tunnel engineering. It is especially important to solve the expressions of ultimate support force and damage surface function for SBU tunnels. In this paper, considering the effect of unsymmetrical action, based on the Hoke-Brown(H-B) damage criterion, the optimal upper bound(UB) solution expression is derived by using the limit analysis method. The expression can be used to express the support force and collapse pattern of a SBU rectangular tunnel. The results show that q1 and q2 decrease with the increase of parameters A and σc, and increase with the increase of parameters B, γ, and h. q1 increases with the increase of α, and vice versa for q2. The range of damage surface decreases with increasing parameter A, σc and increases with increasing parameter B, γ, d, h. After the feasibility study and results analysis, it is concluded that the results obtained in this study are consistent with common engineering knowledge. The training results using Feedforward neural network verify the feasibility of the method for SBU tunnels and can be generalized for shallow buried(SB) symmetrical tunnels. The proposed method can provide a theoretical basis for the support design of SBU tunnels.
Keywords: Shallow buried unsymmetrical tunnels, Hoke-Brown criterion, collapsed rock mass, limit analysis method
DOI: 10.3233/JIFS-234766
Journal: Journal of Intelligent & Fuzzy Systems, vol. 46, no. 2, pp. 3799-3809, 2024
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl