A Study on Performance Improvement of a PHC-W Pile for PHC-W Retaining Wall

Chae Min Kim; Sung Su Kim; Byeong Han Jeon; Yongkyu Choi

doi:10.7843/kgs.2017.33.2.27

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2017 Vol.33, Issue 2 Preview Page Next Page

A Study on Performance Improvement of a PHC-W Pile for PHC-W Retaining Wall PHC-W 흙막이용 PHC-W말뚝의 성능개선에 관한 연구

28 February 2017. pp. 27-34

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Abstract

Various earth retaining wall methods were used on the domestic construction sites and a cast in place pile (C.I.P) method was mostly applied at deep excavation. Because of a lot of shortcomings in the C.I.P method, a new method using PHC-W earth retaining wall was developed. The earth retaining wall method using PHC-W piles has a lot of advantages including that it is safer than other earth retaining wall methods due to uniform quality and high rigidity. PHC-W was designed to effectively resist lateral earth pressure by alternating cross section of PHC pile. And increment of bending moment and shear strength were verified through KS F 4306 tests, and were increased by 42% and 98% more than KS standards.

Keywords

Cast-in Place Pile method

PHC-W pile

PHC-W earth retaining wall

Bending moment

Shear strength

국내 건설 현장에서는 다양한 흙막이 공법이 적용되고 있으며 깊은 지하굴착에는 연속주열식공법(C.I.P)이 많이 적용되고 있다. 그러나 여러 단점들이 있어 이를 보완하기 위하여 PHC 말뚝을 이용한 흙막이 공법이 개발되었다. PHC 말뚝을 이용한 흙막이 공법은 품질이 균질하고 강성이 우수하여 안정성의 확보에 유리한 장점이 있다. PHC-W 말뚝은 PHC 말뚝의 단면을 변경한 제품으로, 수평 토압에 저항하기 위한 최적 설계를 통해 제작되었다. 그리고 KS F 4306 시험을 통하여 휨 모멘트 및 전단강도의 증가효과를 검증하였으며 휨 모멘트와 전단강도는 KS 기준보다 약 42%, 98% 증가되었다.

References

Choi, J. P. (2014), Study on the economic analysis of retaining PHC-W method, Pusan National Univ. Master’s Thesis, pp.6-25.

Choi, Y. K. (2015), Industrialization and quality upgradibility of PHC-W earth retainig wall method, pp.20-22.

Han, J. H. (2006), Case study on application of PHC pile to earth retaining and retention wall, Journal of the Korea Geosynthetics Society, Vol.5, No.3, pp.37-44.

Jin, H. M. (2011), Analysis of charateristics behavior of beaced excavation in the Deagu Region, Keimyung Univ. Master’s Thesis, p.9.

Korea Concrete Institute (2012), KIC concrete design code, Korea Concrete Institute, p.87.

Korea Standards Association (2014), Pretensioned spun high strength concrete piles.

Oh, J. H, Cho, C. W. (2004), Retaining engineering, Goomi bookstore, pp.32-33.

Ryu, S. H. (2015), Permanent basement wall convergence method using a PHC pile, Journal of the Korea Convergence Socity, Vol.6, No.6, pp.163-169.

Information

Publisher :The Korean Geotechnical Society
Publisher(Ko) :한국지반공학회
Journal Title :Journal of the Korean Geotechnical Society
Journal Title(Ko) :한국지반공학회 논문집
Volume : 33
No :2
Pages :27-34
Received Date : 2016-12-13
Revised Date : 2017-01-04
Accepted Date : 2017-01-31
DOI :https://doi.org/10.7843/kgs.2017.33.2.27

Journal of the Korean Geotechnical Society ISSN:1229-2427(Print) 2288-646X(Online) 한국지반공학회 논문집

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