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2022 Vol.38, Issue 8 Preview Page
Applicability of the Tensile Test Performance Evaluation Baseline for Ground Anchors

지반앵커에 대한 인장시험 성능평가 기준선의 적용성 고찰

Dae Gun Kim1
,
Tae Kwang Park2
,
Lee Keun Park3
,
Tae-Hyung Kim4*
김 대근1
,
박 태광2
,
박 이근3
,
김 태형4*
1Member, Graduate Student, Dept. of Civil and Environmental Engrg., Korea Maritime and Ocean Univ.
2Graduate Student, Dept. of Civil and Environmental Engrg., Korea Maritime and Ocean Univ.
3Member, President, Geotechnical Research & Development Co.
4Member, Prof., Dept. of Civil Engrg., Korea Maritime and Ocean Univ.
1정회원, 한국해양대학교 토목환경공학과 박사과정
2비회원, 한국해양대학교 토목환경공학과 석사과정
3정회원, (주)지오알앤디 대표이사
4정회원, 한국해양대학교 건설공학전공 교수
*Corresponding Author
31 August 2022. pp. 75-84
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Abstract

Currently, tension ground anchors are divided into temporary and permanent based on their purpose and period of use, and their performance evaluations are presented separately. Therefore, applying the current performance evaluation’s upper and lower limits to practice seems reasonable. However, because compression ground anchors have been mainly used as permanent, performance evaluation corresponding to permanent is conducted without distinction between temporary and permanent. This evaluation is a strict standard for ground anchors used as temporary, including the removal type. Because of examining the existing performance evaluation for the compression ground anchor, the lower limit can be applied without distinguishing between the temporary and permanent. However, the upper limit should be presented separately for the temporary and permanent. In applying the upper limit, it is necessary to adjust the upper limit of the anchor considering the anchored ground condition (rock or soil), the period of use, and particularly whether the load-displacement curve maintains the elastic state.

Keywords
Compression
Elastic statearrangement and analysis
Ground anchor
Permanent
Temporary
Tension

현재 인장형 지반앵커는 그 사용목적, 사용기간에 따라 가설과 영구로 구분하여 성능평가를 별도로 제시하고 있다. 현재의 성능평가 상한선과 하한선 기준을 실무에 적용하는 데 있어 타당한 것으로 보인다. 하지만, 압축형 지반앵커는 주로 영구로 사용되어 온 점으로 인해 가설과 영구의 구분 없이 영구에 해당하는 기준이 제시되어 있어 제거형과 같이 가설로 사용하는 지반앵커에 있어서는 엄격한 기준이 되고 있다. 기존 성능평가 기준선을 고찰해 본 결과, 하한 기준선은 가설과 영구 구분 없이 적용할 수 있는 것으로 판단되나 상한 기준선은 가설과 영구를 구분하여 제시하는 것이 바람직한 것으로 판단된다. 압축형 지반앵커에서 상한선 기준의 적용에 있어서 앵커의 정착지반상태(암반 또는 토사), 사용기간, 특히 하중-변위 곡선의 탄성상태 유지 여부 등을 고려하여 상한선을 조정할 필요성이 있다.

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Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 38
  • No :8
  • Pages :75-84
  • Received Date : 2022-07-14
  • Revised Date : 2022-08-03
  • Accepted Date : 2022-08-04
  • DOI :https://doi.org/10.7843/kgs.2022.38.8.75
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