바로가기메뉴

본문 바로가기 주메뉴 바로가기

logo

ISSN : 2233-8292

논문 상세

이전 다음
논문 투고

Vol.18 No.6
Citation Share

터널 갱구사면 쏘일네일링 보강배치계획을 위한 최적화기법 연구

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

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2016, v.18 no.6, pp.569-579
https://doi.org/10.9711/KTAJ.2016.18.6.569
김병찬 (한양대학교)
문현구 (한양대학교)
김병찬, & 문현구. (2016). 터널 갱구사면 쏘일네일링 보강배치계획을 위한 최적화기법 연구. (사)한국터널지하공간학회, 18(6), 569-579, https://doi.org/10.9711/KTAJ.2016.18.6.569
  • 다운로드 수
  • 조회수
PDF 다운로드

초록

국내 터널 갱구사면에 안정성을 확보하기 위한 사면보강은 앵커, 쏘일네일 및 록볼트 등을 이용한 다양한 공법이 사용되고있다. 갱구 사면보강공법 및 보강재 배치, 보강재 길이 등을 선정하기 위해서는 시행착오법 등 시간이 많이 소요되기도 하며, 최적조건의 상태가 선정되었는지에 대한 검증이 쉽지 않은 경우도 발생한다. 본 연구에서는 FLAC3D 프로그램에 내장된 FISH 언어를사용해서, 차분진화 알고리즘(DEA)을 적용한 최적화기법을 개발하였다. 갱구사면 보강공법 중에 쏘일네일링 공법에 대한 데이터베이스를 구축한 후, FLAC3D 해석을 통한 안전율 기반의 최적보강배치 계획을 선정할 수 있도록 하였다. 수치해석 결과, 완전조합(FC)에비해서 DEA 기반의 최적화기법이 해석회수가 8배 정도 감소함을 확인하였다. 갱구 사면보강 설계 시 개발된 시스템을 활용하면, 최적보강배치 계획을 상대적으로 쉽게 선정할 수 있을 것으로 기대된다.

keywords
터널 갱구부, 차분진화 알고리즘(DEA), 최적화, 사면보강, 쏘일네일링, Tunnel portal, Differential evolution algorithm (DEA), Optimization, Slope reinforcement, Soil nailing

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
터널 갱구부, 차분진화 알고리즘(DEA), 최적화, 사면보강, 쏘일네일링, Tunnel portal, Differential evolution algorithm (DEA), Optimization, Slope reinforcement, Soil nailing

참고문헌

1.

1. Ahn, W.J. (2012), “A numerical study for the optimal design reinforced retaining wall”, Master’s thesis, Changwon National University.

2.

2. 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.

3.

3. 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.

4.

4. Blondeau, F., Christiansen, M., Guilloux, A., Schlosser, F. (1984). “Talren: méthode de calcul des ouvrages en terre renforcée : Talren: Design method of reinforced soil structures”, Proc. Int. Conference. In Situ Soil and Rock Reinforcement, Paris, pp. 219-224.

5.

5. Doosan E&C. (2008), Gangnam Beltway Report of 5 building construction area.

6.

6. Glotech Co., Ltd. (2013), EBS-v8.0 User Manual.

7.

7. HKIE. (2011), “Design of soil nails for upgrading loose fill slopes”, Report, Geotechnical Engineering Office and Hong Kong Institution of Engineers (Geotechnical Division).

8.

8. Hwang, I.Y. (2013), “A study on effective reinforcement in portal of NATM tunnel in weathered soil”, Master’s thesis, Kangwon National University.

9.

9. 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.

10.

10. Itasca Consulting Group, Inc. (2012), FLAC3D-Fast Lagrangian Analysis of Continua in 3 Dimensions. Version 5.0. User Manual, Minnesota, USA.

11.

11. 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.

12.

12. 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.

13.

13. KR. (2013), “KR Code 2012 – Tunnel Portal Area (C-1208)”, Korean Rail Network Authority (in Korean).

14.

14. Lee, D.H., Lee, S.K. (2001), “Tunnel (7) - technical article”, Korean Geotech Soc, Vol. 17, No. 7, pp. 14-24 (in Korean).

15.

15. 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).

16.

16. Marchal, J. (1984). “Renforcement des sols par clouage. - Etude expérimentale 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.

17.

17. 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.

18.

18. 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.

19.

19. 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.

20.

20. 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.

21.

21. 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.

22.

22. Schlosser, F. (1982), “Behaviour and design of soil nailing”, In International Symposium on Recent Development in Ground Improvement Techniques, pp. 399-413.

23.

23. 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.

(사)한국터널지하공간학회

논문 투고 OA 정책