Browse > Article
http://dx.doi.org/10.9711/KTAJ.2016.18.6.569

A study on the optimization technique for the plan of slope reinforcement arrangement of soil-nailing in tunnel portal area  

Kim, Byung-Chan (HANYANG University, Dept. of Natural Resources and Environmental Engineering)
Moon, Hyun-Koo (HANYANG University, Dept. of Natural Resources and Environmental Engineering)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.18, no.6, 2016 , pp. 569-579 More about this Journal
Abstract
In order to ensure the stability of tunnel portal slope, reinforcement method such as anchors, soil nails and rock bolts have been used in Korea. When selecting slope reinforcement methods in tunnel portal area such as reinforcement arrangement and length, trial and error method can be very time-consuming and it was also not easy to verify the selection of an optimum condition. In this study, using the FISH language embedded in the finite difference code FLAC3D program, the optimization technique was developed with the Differential Evolution Algorithm (DEA). After building a database on the soil nailing method in tunnel portal area, this system can be selected to an optimum arrangement plan based on the factor of safety through the FLAC3D analysis. Through the results of numerical analysis, it was confirmed that the number of analysis was decreased by about 8 times when DEA based optimization technique was used compared to the full combination (FC). In case of the design of slope reinforcement in tunnel portal area, if this built-system is used, it is expected that the selection of an optimum arrangement plan can be relatively easier.
Keywords
Tunnel portal; Differential evolution algorithm (DEA); Optimization; Slope reinforcement; Soil nailing;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 Itasca Consulting Group, Inc. (2012), FLAC3D-Fast Lagrangian Analysis of Continua in 3 Dimensions. Version 5.0. User Manual, Minnesota, USA.
2 Jeong, H.G., Seo, Y.S. (2013), "Slope stability analysis and landslide hazard assessment in tunnel portal area", Journal of Korean Tunn Undergr Sp Assoc, Vol. 15, No. 4, pp. 387-400.   DOI
3 Kim, J.Y., Seo, J.W., Kang, K.I. (2003). "A study on the selection model of retaining wall bearing methods using neural network", Journal of the Architectural of Korea Structure & Construction, Vol. 19, No. 5, pp. 121-128.
4 KR. (2013), "KR Code 2012 - Tunnel Portal Area (C-1208)", Korean Rail Network Authority (in Korean).
5 Lee, D.H., Lee, S.K. (2001), "Tunnel (7) - technical article", Korean Geotech Soc, Vol. 17, No. 7, pp. 14-24 (in Korean).
6 Lee, W.K., Park, J.Y., Sim, J.S. (2014), "Management of safety construction through slope reinforcement in tunnel portal area", Geoenvironmental Engineering, Vol. 15, No. 4, pp. 23-32 (in Korean).
7 Marchal, J. (1984). "Renforcement des sols par clouage. - Etude experimentale en laboratoire : Reinforcement of soils by mailing - experimental study in the laboratory", Proc. Int. Conference. In Situ Soil and Rock Reinforcement, Paris, pp. 275-278.
8 Park, D.S., Bae, J.S. (2015), "Case study of the stability of a large cut-slope at a tunnel portal", The Journal of Engineering Geology, Vol. 25, No. 1, pp. 115-129.   DOI
9 An, J.S., Kim, B.C., Moon, H.K., Song, K.I., Su, G.S. (2016a), "DEA optimization for operating tunnel back analysis", Journal of Korean Tunn Undergr Sp Assoc, Vol. 18, No. 2, pp. 183-193.   DOI
10 Imam, R., Hoseini, S.S. (2016). "Design and optimization procedure for composite soil nail-anchor walls", Japanese Geotechnical Society Special Publication, Vol. 2, No. 45, pp. 1597-1601.   DOI
11 Su, G.S., Zhang, X.F., Chen, G.Q., Fu, X.Y. (2008), "Identification of structure and parameters of rheological constitutive model for rocks using differential evolution algorithm", Journal of Central South University of Technology, Vol. 15, Issue 1, pp. 25-28.   DOI
12 Vardakos, S., Gutierrez, M., Xia, C. (2012), "Parameter identification in numerical modeling of tunneling using the Differential Evolution Genetic Algorithm (DEGA)", Tunnelling and underground space technology, Vol. 28, pp. 109-123.   DOI
13 Schlosser, F. (1982), "Behaviour and design of soil nailing", In International Symposium on Recent Development in Ground Improvement Techniques, pp. 399-413.
14 Seo, H.J., Lee, G.H., Park, J.J., Lee, I.M. (2012). "Optimization of soil-nailing designs considering three failure modes", Journal of the Korean Geotechnical Society, Vol. 28, No. 7, pp. 5-16.   DOI
15 Storn, R., Price, K. (1997), "Differential evolution-a simple and efficient heuristic for global optimization over continuous spaces", Journal of Global Optimization, Vol. 11, No. 4, pp. 341-359.   DOI
16 Zheng, S.S., Li, Z.Q., Tao, Q.L., Han, P.C. (2012). "Hierarchical genetic algorithm for soil-nail bracing", In Applied Mechanics and Materials Vol. 170, pp. 651-654. Trans Tech Publications.
17 Glotech Co., Ltd. (2013), EBS-v8.0 User Manual.
18 An, J.S., Kim, B.C., Moon, H.K., Song, K.I. (2016b), "Estimation of subsea tunnel stability considering ground and lining stiffness degradation measurements", Journal of Korean Tunn Undergr Sp Assoc, Vol. 18, No. 5, pp. 183-193.   DOI
19 Blondeau, F., Christiansen, M., Guilloux, A., Schlosser, F. (1984). "Talren: methode de calcul des ouvrages en terre renforcee : Talren: Design method of reinforced soil structures", Proc. Int. Conference. In Situ Soil and Rock Reinforcement, Paris, pp. 219-224.
20 Doosan E&C. (2008), Gangnam Beltway Report of 5 building construction area.
21 HKIE. (2011), "Design of soil nails for upgrading loose fill slopes", Report, Geotechnical Engineering Office and Hong Kong Institution of Engineers (Geotechnical Division).
22 Hwang, I.Y. (2013), "A study on effective reinforcement in portal of NATM tunnel in weathered soil", Master's thesis, Kangwon National University.
23 Ahn, W.J. (2012), "A numerical study for the optimal design reinforced retaining wall", Master's thesis, Changwon National University.