All Issue

2018 Vol.34, Issue 12
December 2018. pp. 7-17
Abstract

PHC-W흙막이벽체와 결합된 지하증설벽체의 테스트베드를 구축중에 있다. 지하증설벽체의 제원을 결정하기 위하여 실대형 지하증설벽체의 핵심 부재를 제작하여 휨강도실험 및 전단강도실험을 실시하였다. 원형 PHC말뚝의 단면 형상을 개량하여 개발된 PHC-W 흙막이벽체를 건축물 지하벽체로 활용하기 위하여 합성증설벽체와 비합성증설벽체를 제작하여 휨강도 및 전단강도 실험을 수행하였다. 합성증설벽체와 비합성증설벽체에서 휨모멘트 강도 실험값 및 전단강도 실험값이 유사한 수준으로 나타났으므로 합성증설벽체 대신에 시공이 간편하고 비용이 절감될 수 있는 비합성증설벽체를 적용할 수 있다는 것을 확인하였다. 실대형 모형 증설벽체는 두께 200mm로 제작되었는데, PHC-W흙막이벽체와 결합된 지하증설벽체의 경우 동등 지하실 규모의 통상적인 지하벽체보다 두께를 100∼200mm 정도 절감할 수 있는 것을 확인할 수 있었다.

Test bed additional wall combined with PHC-W pile retaining wall has been constructed. To determine the dimensions of test bed additional wall, bending and shear tests of full scale core members of additional wall were tested. Basement additional walls utilizing PHC-W pile retaining wall, which were developed by modifying the cross-section of PHC piles, were classified into the composite additional wall and the non-composite additional wall. Their tests were conducted to obtain bending strength and shear strength of basement additional walls ultilizing PHC-W pile retaining wall. Since bending strengths and shear strengths of the composite additional wall and the non-composite additional wall were similar, it could be confirmed that the non-composite additional wall could be applied instead of the composite additional wall. Full-scale model additional wall was 200 mm thick, thus the thickness of additional wall combined with PHC-W pile retaining wall could be reduced by 100∼200 mm.

References
  1. Choi, J. P., Jin, H. M., Kim, C. M., Kim, S. S., and Choi, Y. K. (2017), "A Study on Behavior of PHC-W Retaining Wall Method Based on the Numerical Analysis Results", Korean Geotechnical Society, Vol.33, No.2, 2017. 1., pp.2-3, ISSN 1229-2427. (in Korean)
  2. Kim, C. M, Kim, S. S., Jeon, B. H., and Choi, Y. K. (2017), "A Study on Performance Improvement of a PHC-W Pile for PHC-W Retaining Wall", Korean Geotechnical Society, Vol.33, No.2, 2017. 1., pp.27-34, ISSN 1229-2427. (in Korean)
  3. KCSC (2016), KDS 14 20 00. (in Korean) Concrete structure design (Ultimate design method). (in Korean)
  4. Musung construction co. Ltd. (2017), Annual performance plan, Korea Agency for infrastructure Technology Advancement, pp.19-22. (in Korean)
  5. Musung construction co. Ltd & Hill Egnrg. Corp. (2018), Institute For Research & Industry Cooperation of KSU (2018), Report on Structural Design and Performance Test of PHC-W Pile and Additional Wall, 2018. 4., p.3. (in Korean)
Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 34
  • No :12
  • Pages :7-17
  • Received Date :2018. 05. 29
  • Accepted Date : 2018. 12. 04