A Case Study on Designs of Base Module for Modular Road System

모듈러 도로시스템 적용을 위한 지지구조 모듈의 설계사례 연구

  • Lee, Juhyung (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Baek, Duhyun (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Kim, Donggyou (Geotechnical Engineering Research Division, Korea Institute of Construction Technology)
  • Published : 2013.11.01

Abstract

This study is the basic research to develop the customized base module for modular road system. A case study was carried out on designs of base module for soft soil condition. Two types of base module was proposed; crossbeam module and crossbeam-pile module. Based on the case study, it was verified crossbeam-pile module is suitable for soft soil condition and the optimum dimension of crossbeam-pile module for modular road system constructed on soft soil was determined. For development of the optimal base modular for modular road system, it is needed in the future to build a data base about ground and roadbed of road construction sites and to classify and systemized base modules according to soil conditions through many case studies.

본 연구는 모듈러 도로시스템에 적용 가능한 맞춤형 지지구조 모듈러 개발을 위한 기초연구로서 연약지반 조건에 대한 지지구조 모듈의 설계사례 연구를 수행하였다. 지지구조 모듈은 크로스빔 지지구조와 크로스빔-말뚝 지지구조 두 가지 형식으로 제안하였다. 두 형식에 대한 설계검토를 통하여 연약지반에 대해서는 크로스빔-말뚝 지지구조가 적합한 것을 확인하였으며, 모듈러 도로시스템에 적합한 크로스빔-말뚝 지지구조의 제원을 도출하였다. 맞춤형 지지구조 모듈러 개발을 위해서는 향후 다양한 국내 도로건설 현장의 원지반이나 노체에 대한 DB를 구축하고 설계사례 연구를 통하여 지반조건에 따른 지지구조 모듈의 분류 및 체계화가 필요할 것으로 판단된다.

Keywords

References

  1. 국토해양부(2012), 2012 국토해양통계연보, pp. 183-222.
  2. 대한토목학회(2008), 도로교설계기준 해설, p.754.
  3. 한국건설기술연구원(2012), 지속가능한 장수명 모듈러 도로시스템 개발, 기획보고서, pp. 2-24.
  4. 한국교통연구원(2013), 2010년 전국 교통혼잡비용 추정과 추이 분석(수시연구 2013-6), p. 62.
  5. 한국도로공사(2009), 도로설계요령, pp. 67-68, 361, 469-470.
  6. 한국지반공학회(2009), 구조물 기초 설계기준 해설, pp. 179-424.
  7. Altaee, A., Evgin, E. and Fellenius, B. H.(1993), Load transfer for piles in sand and the critical depth, Canadian Geotechnical Journal, Vol. 30, No. 3, pp. 455-463. https://doi.org/10.1139/t93-039
  8. FEHRL.(2013), Report on FEHRL's US scanning tour 2013-advanced and innovative construction and maintenance, FEHRL Knowledge Centre, Belgium, pp. 7-24.
  9. Fellenius, B. H. and Altaee, A. A.(1995), Critical depth: How it came onto being and Why it does not exist, Proceedings of the Institute of Civil Engineers, Geotechnical Engineering Journal, London, Vol. 113, April, pp. 107-111.
  10. Hansen, J. B.(1970), A revised and extended fomula for bearing capacity, The Danish Geotechnical Institute, Bulletin No. 28, Copenhagen, pp. 5-11.
  11. Harr, M. E.(1966), Foundations of theoretical soil mechanics, McGraw-Hill, New York, p. 88.
  12. Meyerhof, G.(1976), Bearing capacity and settlement of pile foundations, Journal of Geotechnical Engineering Division, Vol. 102, No. 3, pp. 195-228.
  13. Schmertmann, J. H. and Hartman, J. P.(1978), Improved strain influence factor diagrams, Journal of the Geotechnical Engineering Division, Vol. 104, No. GT8, pp. 1131-1135.
  14. Skempton, A. W.(1951), The bearing capacity of clays, Proceedings, Building Research Congress, Vol. 1, London, pp. 180-189.
  15. Terzaghi, K.(1943), Theoretical soil mechanics, Wiley, New York, pp. 265-296.
  16. Terzaghi, K. and Peck, R. B.(1967), Soil mechanics in engineering practice, John Wiley, New York, 2nd ed., pp. 52-68.
  17. U.S. NAVY(1982), Soil mechanics, foundations and earth structures, NAVFAC Design Manual 7, Washington, D. C., pp. 59-85.
  18. Vesic, A. S.(1970), Tests on instrumented piles, Ogeechee river site, Journal of Soil Mechanics, Foundations Engineering Division, Vol. 96, No. SM2, pp. 561-584.
  19. Vesic, A. S.(1977), Design of pile foundations, National Cooperative Highway Research Program Synthesis of Practice No. 42, Transportation Research Board, Washington, D. C., pp. 32-48.
  20. Woodward, R. J., Lundgren, R. and Boitano, J. D.(1961), Pile loading tests in stiff clays, 5th International Conference of Soil Mechanics and Foundation Engineerning, Paris, Vol. 2, pp. 177-184.