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2026 Vol.27, Issue 4 Preview Page
Characteristics of Acceleration Response of Soil-Pile Group-Superstructure According to Seismic Incidence Direction

지진파의 입사방향에 따른 지반-무리말뚝-상부구조물의 가속도 응답 특성

Jinhwi Hong1
,
Kwangkuk Ahn2*
홍 진휘1
,
안 광국2*
1Gtx central conductor, Korea national railway
2Professor, School of Civil Engineering, Chungbuk National University
*Corresponding Author
1 April 2026. pp. 29-35
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Abstract

The dynamic behavior of structures during earthquakes is influenced by the interaction among soil, pile groups, and superstructures, and the incidence direction of seismic waves can also affect the response characteristics of structures. However, studies on the dynamic response of soil–pile group–superstructure considering the directionality of seismic waves remain limited. In this study, 1 g shaking table tests were conducted to investigate the effect of seismic incidence direction on the acceleration response characteristics of a soil–pile group–superstructure installed in dry sandy soil. The results showed that the peak response accelerations at the ground surface, pile cap, and superstructure varied depending on the seismic incidence direction. In particular, the peak response acceleration of the superstructure tended to increase as the seismic incidence direction increased.

Keywords
Seismic
Incidence direction
Pile group
Acceleration

지진 시 구조물의 동적 거동은 지반, 무리말뚝 및 상부구조물의 상호작용에 의해 영향을 받으며, 지진파의 입사방향 또한 구조물의 응답특성에 영향을 미칠 수 있다. 그러나 지진파의 입사방향을 고려한 지반-무리말뚝-상부구조물의 동적 응답에 대한 연구는 미비한 실정이다. 이에 본 연구에서는 건조 사질토 지반에 설치된 무리말뚝과 상부구조물로 구성된 지반-무리말뚝-상부구조물을 대상으로 지진파의 입사방향이 가속도 응답 특성에 미치는 영향을 확인하기 위해 1 g 진동대 모형실험을 수행하였다. 실험 결과 지표면, 말뚝캡 및 상부구조물에서의 최대 응답가속도는 지진파의 입사방향에 따라 변화하는 것으로 나타났으며, 특히 지진파의 입사방향이 증가하면 상부구조물에서의 최대 응답가속도는 증가하는 경향으로 나타났다.

키워드
지진파
입사방향
무리말뚝
가속도
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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 :4
  • Pages :29-35
  • Received Date : 2026-03-03
  • Revised Date : 2026-03-06
  • Accepted Date : 2026-03-25
  • DOI :https://doi.org/10.14481/jkges.2026.27.4.29
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