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2026 Vol.27, Issue 7 Preview Page
Reusability Evaluation of Existing Concrete Piles in Soft Ground

연약지반에 설치된 기존 콘크리트 말뚝의 재사용 가능성 평가

Youngho Seo1
,
Sunhee Kim2
,
Jungsoon Hwang3
,
Jungjae Lee4
,
Seungcheol Baek5*
서 영호1
,
김 선희2
,
황 정순3
,
이 중재4
,
백 승철5*
1Director, Kyunghwa Engineering co., Ltd.
2Associate Prof., Dept. of Architectural Engineering, Gachon University
3General Manager, Civil Engineering Team, Doosan eng. & Const.
4CTO, Hanil Geoeng.
5Professor, Dept. of Civil Engineering, Gyeongkuk National University
*Corresponding Author
1 July 2026. pp. 15-22
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Abstract

This study employed numerical analysis to identify potential issues associated with two scenarios for the removal of existing concrete piles originally installed as foundations for a planned structure. Considering hazard factors that may arise from temporary excavation and backfilling operations, as well as the geotechnical characteristics of the excavation ground and the surrounding groundwater conditions, the analysis compared (i) complete removal of all piles and (ii) staged removal of only the necessary portions around the building. In addition, displacements at each construction stage were evaluated for both scenarios to predict their effects on adjacent ground and structures. The results indicate that decisions regarding pile removal should be made with careful consideration of site-specific ground conditions and groundwater distribution. Furthermore, the carbon emission analysis indicated that the complete removal of the piles results in an additional emission of approximately 9,585 ton-CO2eq. Regarding the reforestation required for carbon neutrality, it was verified that a period of 60 years must elapse following the planting of 76,680 pine trees.

Keywords
Pile
Reuse
Concrete pile
Displacement
Removal
Carbon emission

기존에 계획된 구조물의 기초용으로 시공된 콘크리트 말뚝을 철거하기 위해 임시 굴착공사와 되메움 공사가 진행됨에 따라 발생할 수 있는 위해요인 및 굴착 대상 지반특성, 주변 지하수 특성을 고려하여 말뚝을 전체 철거하는 경우와 건축물을 중심으로 필요한 부분만 단계적으로 철거하는 경우 발생 가능한 문제점을 수치해석을 통해 분석하였다. 또한, 말뚝 전체를 철거할 경우와 필요한 부분만 철거하는 경우 시공 단계별 변위를 확인하여 인접 지반 및 구조물에 미칠 영향을 예측하였다. 추가적으로 환경영향 평가를 위해 탄소배출량을 산정한 결과, 말뚝 전체 철거시 기존 재사용안 대비 약 9,585 ton-CO2eq. 의 탄소가 추가 배출되는 것으로 분석되었다. 이는 소나무 76,680그루를 식재한 후 60년 동안 흡수해야 하는 양에 해당한다. 결과적으로 기존 말뚝의 철거를 최소화하는 재 사용안은 안정성, 환경성, 경제성 측면에서 모두 우수한 것으로 평가되었다.

키워드
말뚝
재사용
콘크리트 말뚝
변위
철거
탄소배출량
References
1

국립산림과학원 (2019), 주요 산림 수종의 표준 탄소흡수량(ver 1.2), NIFOS 산림정책 이슈, 제129호.

2

국토교통부 (2020), 지하안전성영향평가 표준매뉴얼.

3

국토교통부 (2025), 공사중단 장기건축물의 정비 등에 관한 특별 조치법.

4

국토해양부 (2012), 시설물별 탄소배출량 산정 가이드라인-도시재생.

5

서울특별시 (2016), 공사장 지하수 관리 매뉴얼.

6

Choi, S. H. (2012), Comparative study on the sustainability assessment of steel pipe piles and PHC piles by carbon dioxide emission, Ph. D. dissertation Hongik University (in Korean).

7

Cui, J., Li, J., Xiao, J., Yao, J. and Yang, Z. (2020). Reclamation pathway of waste piles: a case study in Shanghai, Journal of Cleaner Production, Vol. 253, Article 119919.

10.1016/j.jclepro.2019.119919
8

Horii, Y., Nagao, T., Kawata, M., Ishizawa, S. and Ono, S. (2007), Reuse of existing piles using flexible connection at pile head, Journal of Architecture and Building Science, Vol. 13, No. 25, pp. 81~84 (in Japanese).

10.3130/aijt.13.81
9

Kim, J. W., Lee, K. S., and Shin, S. W. (2011), A study on the development of an assessment methodology for CO2 emission from concrete manufacturing to CIP, Journal of the Architectural Institute of Korea, Vol. 27, No. 8, pp. 103~110 (in Korean).

10

Miyata, A. and Suzuki, M. (2004), Influence of old piles left underground on new pile resistance, Annual Report of Kajima Technical Research Institute, Kajima Corp., No. 52, pp. 29~34 (in Japanese).

11

Niu, J., Yang, Z., Yin, S. and Cheng, S. (2025), Integrated analysis of optimization and settlement characteristics in hybrid pile systems for reused foundations, Applied Sciences, Vol. 15, No. 6, 3016.

10.3390/app15063016
12

Sei, H., Chatani, F. and Fujii, A. (2001), Enhancing seismic performance of pile foundation by using existing piles and non-rigid connection method of the pile head, Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, B-1, pp. 429~430 (in Japanese).

13

Sheil, B. (2017), Numerical simulations of the reuse of piled raft foundations in clay, Acta Geotechnica, Vol. 12, No. 5, pp. 1047~1059.

10.1007/s11440-017-0522-8
14

Tsubakihara, Y., Yamada, T. and Yamashita, K. (2003), Investigation on carbonation of cast-in-place concrete piles, Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, B-1, pp. 563~564 (in Japanese).

15

Watanabe, T., Ishizaki, S., Tomita, N., Kawamoto, S. and Tatsuno, S. (2015), Reuse of existing bored piles for high-rise building foundation, The 15th ARC on Soil Mechanics and Geotechnical Engineering, Fukuoka, pp. 158~161.

10.3208/jgssp.ESD-09
16

Zhang, J., Huang, L., Gao, Q., Ding, H., Ren, Z., Liu, C., Cheng, G. and Wu, D. (2024), Durability and bearing capacity assessment of existing bridge pile foundations for sustainable highway reconstruction, Sustainability, Vol. 16, No. 24, 11096.

Information
  • Publisher :Korean Geo-Environmental Society
  • Publisher(Ko) :한국지반환경공학회
  • Journal Title :Journal of the Korean Geo-Environmental Society
  • Journal Title(Ko) :한국지반환경공학회 논문집
  • Volume : 27
  • No :7
  • Pages :15-22
  • Received Date : 2026-05-04
  • Revised Date : 2026-05-13
  • Accepted Date : 2026-06-18
  • DOI :https://doi.org/10.14481/jkges.2026.27.7.15
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