Numerical Analysis-Based Derivation of the Optimal Shape for a Plate Anchor Pins

Song Hee Suk; Chan-Young Park; Da-Bin Kwon; Gyeong-Ho Lee; Soon-Joo Choi; Yong-Seong Kim

doi:10.12814/jkgss.2025.24.2.025

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2025 Vol.24, Issue 2 Preview Page

Research Article

Numerical Analysis-Based Derivation of the Optimal Shape for a Plate Anchor Pins 수치해석을 통한 Plate Anchor Pin의 최적 형상 도출

30 June 2025. pp. 25-37

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Abstract

The use of stone net reinforcement materials, which can replace conventional concrete structures and blocks, is gradually increasing. However, if the stone net is not properly secured, strong water flow can reduce the friction between the ground and the net, resulting in problems such as embankment sliding or slope failure. To effectively secure the stone net to the riverbed and prevent loss or damage even under strong water flow, a method has been developed that involves inserting fixed anchor pins to secure the stone net into the riverbed and connecting them to the stone net. This study performed a finite element analysis (FEA) using the MIDAS GTS NX program based on the geotechnical properties of a river embankment reinforcement site in Gapyeong, Gyeonggi Province. The analysis investigated the stress-strain behavior of the ground resulting from the pullout of plate anchor pins, leading to the derivation of optimal conditions for the anchor pin length and plate width. The results indicated that anchor pin performance improved with increased length and plate width. Considering economic efficiency, the optimal dimensions were determined.

Keywords

Plate anchor pin

Pullout load

River reinforcement

Numerical model comparison

기존의 콘크리트 구조물과 블록을 대체할 수 있는 스톤네트 보강재의 사용이 점차 증가하고 있지만 스톤네트가 제대로 고정되지 않을 경우, 강한 유속에 의해 지반과의 마찰력이 감소하여 제방 슬라이딩 현상이나 비탈면 붕괴와 같은 문제가 발생할 수 있다. 이에 따라 스톤네트를 하천에 효과적으로 고정하고 강한 유속에서도 유실 및 파손을 방지하기 위해, 하상에 스톤네트를 고정해주는 고정형 앵커핀을 삽입하고 이를 스톤네트와 연결하는 방안이 개발되고 있다. 본 연구에서는 경기도 가평에 위치한 하천 제방 보강공사 현장의 물성치를 바탕으로 MIDAS 사의 GTS NX프로그램을 사용하여 스톤네트의 앵커핀과 플레이트를 대상으로 유한요소해석을 수행하고 플레이트 앵커핀의 인발에 따른 지반의 응력-변형 거동을 분석하여, 앵커핀의 길이와 플레이트의 폭이 최적화되는 조건을 도출하였다. 본 연구 결과, 앵커핀의 길이와 플레이트의 폭은 길고 넓을수록 성능이 향상되는 것으로 나타났으며 경제적인 측면을 고려하여 최적 형상을 선정하였다.

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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 : 24
No :2
Pages :25-37
Received Date : 2025-02-17
Revised Date : 2025-05-26
Accepted Date : 2025-06-17
DOI :https://doi.org/10.12814/jkgss.2025.24.2.025

Journal of the Korean Geosynthetics Society ISSN:2508-2876(Print) 2287-9528(Online) 한국지반신소재학회 논문집

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