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2024 Vol.23, Issue 3 Preview Page

Research Article

Field Applicability Evaluation of Monotype Load Cell for Load-Distributing Anchor

하중 분산형 앵커 내하체에 대한 모노타입 하중계의 현장 적용성 평가

Yong-Jae Song1
,
Kang-Il Lee2*
,
Yong-Chai Chang3
,
Sang-Yong Kim4
송 용재1
,
이 강일2*
,
장 용채3
,
김 상용4
1Member, Ph.D. Candidate, Dept. of Civil and Environment Engineering, Daejin Univ., 1007 Hoguk-ro, Pocheon-si, Gyeonggi-do 11159, Republic of Korea
2Member, Professor, Dept. of Smart Construction and Environmental Engineering, Daejin Univ., 1007 Hoguk-ro, Pocheon-si, Gyeonggi-do 11159, Republic of Korea
3Member, Professor, Department of Ocean Civil Engineering, Mokpo National Maritime University, Haeyangdaehak-ro 91, Mokpo 58628, Republic of Korea
4Graduate Students, Department of Ocean Civil Engineering, Mokpo National Maritime University, Haeyangdaehak-ro 91, Mokpo 58628, Republic of Korea
*Corresponding Author
30 September 2024. pp. 23-30
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Abstract

According to the method of settling the construction structure on the ground to keep the structure safe, the ground anchor method is divided into a load-distributing anchor and a general anchor. Recently, the application of load-distributed anchors, which show a large degree of recognition by anchors, is increasing in the field, but the problem of field applicability is also caused. The load-distributed anchor fixes the tensile force to each section of the lecture line and applies it, causing a problem of asymmetric loads in which the maximum tensile force size of each settlement site differs due to the length difference of the anchor body. Therefore, in this study, as a quality management method according to the asymmetric load of anchors, a mono-type load cell that can measure the load for each lecture line of a load-distributed anchor was developed, and the field applicability was analyzed by comparing and analyzing the measurement results of the existing multi-type load cell and mono-type load cell. As a result of the study, the multi-type load cell had no choice but to estimate the working load for each inner body, so it was impossible for the load-distributed anchor to manage it according to the generation of asymmetric loads for each lecture line. However, in the case of a mono-type load cell the load was measured for each inner body and for each lecture line, regardless of ground conditions and construction conditions, and thus the load value was measured for each lecture line, enabling safety management and construction management according to the occurrence of asymmetric loads.

Keywords
Load-distributing anchor
Asymmetric Loads
Monotype load cell
Multitype load cell

건설 구조물을 지반에 정착시켜 구조물을 안전하게 유지하기 위한 그라운드 앵커공법은 정착 방식에 따라 하중분산형 앵커와 일반형 앵커로 구분된다. 최근 현장에서는 앵커의 인장력이 크게 나타나는 하중분산형 앵커를 적용하는 사례가 증가하는 추세이지만 그에 따른 현장 적용성에 대한 문제점도 있다. 하중분산형 앵커는 강연선에 인장력을 각각 다른 구간에 정착시켜 가하는 방식으로 앵커체의 길이 차이로 인해 정착장 별 최대 인장력 크기가 다르게 나타나는 편하중의 문제점이 발생하고 있다. 이에 본 연구에서는 앵커의 편하중에 따른 품질관리 방안으로 하중분산형 앵커의 각 강연선별로 하중 측정이 가능한 모노타입 하중계를 개발하였으며, 기존의 멀티타입 하중계와 모노타입 하중계의 측정 결과를 비교 분석하여 현장 적용성을 분석하였다. 그 연구 결과, 멀티타입 하중계는 내하체별 작용하중을 추정할 수 밖에 없어 하중분산형 앵커의 강연선별 편하중 발생에 따른 관리는 불가능하였다. 그러나 모노타입 하중계의 경우에는 각 내하체별, 강연선별로 하중이 측정되어 지반조건, 시공조건 등에 상관없이 각 강연선별로 하중값이 측정되어 편하중 발생에 따른 안전관리와 시공관리가 가능할 것으로 판단된다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 23
  • No :3
  • Pages :23-30
  • Received Date : 2024-07-23
  • Revised Date : 2024-08-08
  • Accepted Date : 2024-08-12
  • DOI :https://doi.org/10.12814/jkgss.2024.23.3.023
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