Land and Housing Review (토지주택연구)

Land and Housing Research Institute (한국토지주택공사 토지주택연구원)
권호 표지
DOI QR코드

DOI QR Code

Suggestion of Load and Resistance Factored Design Value for PHC Bored Pile

PHC 매입말뚝의 하중저항 설계정수 제안

  • Received : 2012.06.21
  • Accepted : 2012.07.17
  • Published : 2012.07.30
Download PDF
⟨ Previous Next ⟩

Abstract

The limit states design method is replacing the allowable stress design method worldwide, e.g. the design code of ISO and various construction codes of Korea are adopting the reliability based limit state method. This paper proposed LRFD design value which is one of limit states design method for the PHC bored pile used as building foundation. This paper analysed 81 load test results and the bearing design(Meyerhof method & SPT-CPT conversion method), and proposed LRFD value for each design reliability Index 2.33 and 3.0 for PHC bored pile. LRFD value of PHC bored pile represents 0.36~0.44 for Meyerhof method and 0.24~0.31 for SPT-CPT conversion method according to the deign reliability index.

뢰성에 기반한 한계상태설계법은 국제표준화기구인 ISO뿐만 아니라 국내의 각종 건설관련 기준에서도 적용되는 등 국내외적으로 기존 허용응력설계법을 대체하고 있는 실정이다. 본 논문에서는 국내에서 건축물의 기초로 많이 사용되고 있는 PHC 매입말뚝을 대상으로 한계상태설계법의 일종인 LRFD 설계정수를 제안하였다. PHC 매입말뚝의 LRFD 설계정수를 제안하기 위해 81개의 현장 동재하 시험자료와 이들 말뚝에 대한 지지력 설계(Meyerhof 설계법, SPT-CPT 전환 설계법) 자료를 분석하고 목표 신뢰도 지수 2.33과 3.0에 대해 하중저항계수를 제시하였다. PHC 매입말뚝의 저항계수는 목표 신뢰도 지수에 따라 Meyerhof 방법, SPT-CPT 전환법은 각각 0.36~0.44, 0.24~0.31을 나타내었다.

Keywords

References

  1. 국토해양부(2010), 도로교 설계기준 해설, 한국도로교통협회, pp. 838-848.
  2. 국토해양부, 한국건설교통기술평가원(2008), LRFD 기초구조 물 설계를 위한 저항계수 결정 연구, 한국건설기술연구원.
  3. 국토해양부(2009), 구조물 기초 설계기준 해설, 한국지반공학회, pp. 304-307.
  4. 박종배, 김상연, 이범식, 박용부, 임해식, 최경륜, 김동수, 김범주 (2011), 말뚝기초의 설계법 선진화 및 시공법 다양화, 한국토지주택공사 토지주택연구원, pp. 90-173.
  5. 박종배, 김정수, 정형식(2003), "SIP 공법의 지지력 특성에 관한 연구", 한국지반공학회 논문집, 19(1): 51-60.
  6. KBC (2009), 건축구조기준 및 해설(강구조편), 대한건축학회, pp. 28-30.
  7. AASHTO (2007), LRFD Bridge and Construction Specifications, AASHTO, Washington, D.C.
  8. Bustamante, M. and L. Gianeselli (1982), "Pile Bearing Capacity Prediction by Means of Static Penetrometer CPT.", Proc. of 2nd European Symposium on Penetration Testing, Amsterdam, pp. 493-500.
  9. Canadian Geotechnical Society (1992), Canadian Foundation Engineering Manual, 3rd Edition, Bi-Tech Publishers, Ltd., Richmond, British Columbia, Canada, 512.
  10. Goble, G. G. (1999), Geotechnical Related Development and Implementation of Load and Resistance Factor Design (LRFD) Methods, NCHRP Program, Synthesis of Highway Practice 276, Transportation Research Board, Washington, D.C.
  11. Eurocode 7 (1993), Geotechnical Design Forth and Final Draft, European Committee for Standardization, TC 250/SC7
  12. Meyerhof, G. G. (1976). "Bearing Capacity and Settlement of Pile Foundations", Journal of the Geotechnical Engineering Division, ASCE, New York, NY, 102(GT3): 196-228.
  13. NCHRP Report 507 (2004), Load and Resistance Factor Design for Foundations, Transportation Research Board, Washington, D.C.
  14. Ontario Highway Department (1991), Ontario Highway Bridge Design Code, Third Edition, Ministry of Transportation and Communication, Toronto, Ontario, 370.
  15. Robertson, P. K. and R. G. Campanella (1983), "SPT-CPT Correlations", Journal of Geotechnical Engineering, ASCE, 109(11): 1449-1459. https://doi.org/10.1061/(ASCE)0733-9410(1983)109:11(1449)
  16. Van Impe, W., E. E. DeBeer and E. Louisberg (1988), "Prediction of Single Pile Bearing Capacity in Granular Soils from CPT Results", Procedings of the 1st International Symposium on Penetration Testing, ISOPT-1, Specialty Session, Orlando, Fla, March 20-24, 1988. pp. 1-34.
  17. Withiam, J. L., E. P. Voytko, R. M. Barker, J. M. Duncan, B. C. Kelly, S. C. Musser and V. Elias (2001), Load and Resistance Factor Design (LRFD) for Highway Bridge Substructures, Publication No FHWA HI-98-032, NHI Course No.13068, Federal Highway Administration, Washington D.C.
  18. Yoon, G. L. and M. W. O'Neill(1997), Resistance Factors for Single Driven Piles from Experiments, Transportation Research Record, 1569: 47-54. https://doi.org/10.3141/1569-06