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Research Article

Small Scale Modelling Experiments for Evaluating Lateral Resistance of Block-Type BreakwaterⅡ: A Single Block Reinforced with Piles under Cyclic Lateral Loads

블록식 방파제의 수평저항력 평가를 위한 실내모형실험Ⅱ: 보강형 싱글블럭의 반복수평 하중에 대한 저항

Gichun Kang1
,
Jiseong Kim2*
강 기천1
,
김 지성2*
1Associate Professor, Department of Civil Engineering, College of Engineering, Gyeongsang National University, 501 Jinjudae-ro, Jinju, Gyeongsnagnam-do 52828, Republic of Korea
2Member, Assistant Professor, Department of Cadastre & Civil Engineering, Vision College of Jeonju, 235 Cheonjam-ro, Wansan-gu, Jeonju, Jeollabuk-do 55069, Republic of Korea
*Corresponding Author
31 December 2021. pp. 105-112
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Abstract

In the case of harbor structures, it is important to understand the characteristics of structures that are subjected to repeated loads as they are structures that receive repetitive loads such as wave pressure as well as static loads. In this study, the lateral resistance according to the pile embeded depth of the block breakwater reinforced with piles by cyclic lateral loads was obtained through an model experiment. As the depth of embedment of the pile increased, the lateral resistance showed a tendency to increase. As the load was repeated, the gradient of the lateral resistance gradually appeared to be gentle. The bending moment of the rear pile was larger than that of the front pile. The bending moment of piles in the ground was similar to that when the pile head was free in the cohesionless of Broms (1964).

Keywords
Cyclic lateral loads
Block breakwater
Pile
Lateral resistance
Embeded depth

항만구조물의 경우 정적인 하중 뿐만 아니라 파압과 같이 반복적인 하중을 받는 구조물임에 따라 반복적인 하중을 받는 구조물의 특성을 파악하는 것이 중요하다. 따라서 본 연구는 반복 수평하중에 의한 말뚝으로 보강된 블록식 방파제의 거동특성을 실내모형실험을 통해 구하였다. 말뚝의 근입 깊이가 깊어질수록 수평저항력이 증가하는 경향이 나타났으며, 하중이 반복될수록 수평저항력의 기울기는 점차 완만하게 나타났다. 휨모멘트는 후열말뚝이 전열말뚝보다 크게 나타났다. 지반내에서의 말뚝의 휨모멘트는 Broms(1964)의 사질토지반에서 말뚝두부 자유일 때와 유사하게 나타났다.

References
1
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2
Broms, B. B. (1965), “Design of Laterally Loaded Piles”, Proc. ASCE, Vol.91, No.SM 3, pp.79-99. 10.1061/JSFEAQ.0000751
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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 : 20
  • No :4
  • Pages :105-112
  • Received Date : 2021-11-22
  • Revised Date : 2021-12-06
  • Accepted Date : 2021-12-08
  • DOI :https://doi.org/10.12814/jkgss.2021.20.4.105
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