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2026 Vol.27, Issue 4 Preview Page
Effect of Seismic Incident Direction on the Dynamic Behavior of Pile Groups Supporting Superstructures

상부구조물을 지지하는 무리말뚝의 동적거동에 지진파의 진행방향이 미치는 영향

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. 37-44
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Abstract

The dynamic behavior of structures during earthquakes is influenced by the interaction among soil, pile foundations, and superstructures, and the incidence direction of seismic waves can also affect structural response characteristics. However, studies on the dynamic behavior of soil–pile group–superstructure systems considering the directionality of seismic waves remain limited. In this study, 1 g shaking table tests were conducted on a 3×3 end-bearing pile group supporting a superstructure installed in dry sandy soil, with varying seismic incident directions. The results show that the dynamic p–y curves vary depending on the pile location within the group and the seismic incident direction, and both the maximum bending moment and its location also vary with the seismic incident direction.

Keywords
Superstructure
Pile group
Dynamic behavior
seismic wave
Incident direction

지진 시 구조물의 동적 거동은 지반, 말뚝기초 및 상부구조물의 상호작용에 의해 영향을 받으며, 지진파의 진행방향 또한 구조물의 응답특성에 영향을 미칠 수 있다. 그러나 지진파의 진행방향을 고려한 지반-무리말뚝-상부구조물 시스템의 동적 거동에 대한 연구는 매우 부족한 실정이다. 이에 본 연구에서는 건조 사질토 지반에 설치된 상부구조물을 지지하는 3×3 배열의 선단지지 무리말뚝을 대상으로, 지진파의 진행방향을 변화시켜 1 g 진동대 모형실험을 수행하였다. 실험 결과 무리말뚝 내 말뚝 위치에 따른 동적 p-y 곡선은 지진파의 진행방향에 따라 변화하는 것으로 나타났으며, 최대 휨모멘트 및 최대 휨모멘트 발생위치는 지진파의 진행방향에 따라 변화하는 것으로 나타났다.

키워드
상부구조물
무리말뚝
동적거동
지진파
진행방향
References
1

API (2014), Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms—Working Stress Design (API RP 2A-WSD), American Petroleum Institute.

2

Boulanger, R.W., Curras, C.J., Kutter, B.L., Wilson, D.W. and Abghari, A. (1999), Seismic soil-pile-structure interaction experiments and analyses, Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 125, Issue. 9, pp. 750~759.

10.1061/(ASCE)1090-0241(1999)125:9(750)
3

Bradley, B. A. and Baker, J. W. (2014), Ground motion directionality in the 2010–2011 Canterbury earthquakes, Earthquake Engineering & Structural Dynamics, Vol. 44, Issue. 3, pp. 371~384.

10.1002/eqe.2474
4

Brown, D. A., Morrison, C., and Reese, L. C. (1988), Lateral load behavior of pile group in sand, Journal of Geotechnical Engineering, Vol. 114, Issure. 11, pp. 1261~1276.

10.1061/(ASCE)0733-9410(1988)114:11(1261)
5

Cho, D.H., Park, J.H. and Hwang, J.H. (2003), Statistical analysis for natural frequency on the existing bridges through the field loading tests, Journal of Industrial Science and Technology Institute, Vol. 17, No. 1, pp. 145~153 (in Korean).

6

Gazetas, G. (1991), Formulas and charts for impedances of surface and embedded foundations, Journal of Geotechnical Engineering, ASCE, Vol. 117, Issue. 9, pp. 1363~1381.

10.1061/(ASCE)0733-9410(1991)117:9(1363)
7

Han, J.H., Ahn, S.N., Yoon, H.C. and Jung, J.W. (2021), Analysis of Dynamic p-y Curve Characteristics According to Mode Shape of Structure Using Shaking Table Tests, Journal of Korean Society of Hazard Mitigation, Vol. 21, No. 5, pp. 245~250 (in Korean).

10.9798/KOSHAM.2021.21.5.245
8

Iai, S. (1989), Similitude for shaking table tests on soil-structure-fluid model in 1g gravitational field, Journal of Soils and Foundations, Vol. 29, No. 1, pp. 105~118.

10.3208/sandf1972.29.105
9

Kim, H.T., Kang, H.S., Jeong, K.S. and Ahn, K.K. (2023), Dynamic Behavior Characteristics of Group Piles with Relative Density in Sandy Soil, Journal of the Korean Geo-Environmental Society, Vol. 24, No. 9, pp. 33~40 (in Korean).

10.14481/JKGES.2023.24.9.33
10

Lee, H.G., Ahn, K.K., Kang, H.S. (2019), The Effect of Dynamic Behavior on Changing Pile Cap Size of Pile Group in Sandy Soil, Journal of the Korean Geo-Environmental Society, Vol. 20, No. 8, pp. 5~12 (in Korean).

11

Lim, H.S. and Jeong, S.S. (2017), Analysis of Dynamic Behavior of a Single Pile in Dry Sand by 1g Shaking Table Tests, Journal of the Korean Geotechnical Society, Vol. 33, No. 7, pp. 17~28 (in Korean).

10.7843/KGS.2017.33.7.17
12

Matlock, H. (1970), Correlations for design of laterally loaded piles in soft clay, Proceedings of Offshore Technology Conference (OTC), Houston, Texas, pp. 577~594.

10.4043/1204-MS
13

Reese, L.C., Cox, W.R. and Koop, F.D. (1974), Analysis of laterally loaded piles in sand, Proceedings of Offshore Technology Conference (OTC), Houston, Texas, pp. 473~483.

10.4043/2080-MS
14

Rollins, K. M., Peterson, K. T. and Weaver, T. J. (1998), Lateral load behavior of full-scale pile group in clay, Journal of Geotechnical and Geoenvironmental Engineering, 124(6), 468~478.

10.1061/(ASCE)1090-0241(1998)124:6(468)
15

Tokimatsu, K., Suzuki, H. and Sato, M. (2005), Effects of inertial and kinematic interaction on seismic behavior of pile with embedded foundation, Soil Dynamics and Earthquake Engineering, Vol. 25, Issues. 4-10, pp. 753~762.

10.1016/j.soildyn.2004.11.018
16

Wolf, J.P. (1985), Dynamic Soil–Structure Interaction, Prentice-Hall.

17

Yang, E. K., Yoo, M. T., Kim, H. U. and Kim, M. M. (2009), Dynamic p-y Backbone Curves for a Pile in Saturated Sand, Journal of the Korean Geotechnical Society, Vol. 25, No. 11, pp. 27~38 (in Korean).

18

Yoo, M. T., Choi, J. I., Han, J. T. and Kim, M. M. (2013), Dynamic p-y Curves for Dry Sand from Centrifuge Tests, Journal of Earthquake Engineering, Vol. 17, pp. 1082~1102 (in Korean).

10.1080/13632469.2013.801377
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 :37-44
  • Received Date : 2026-03-03
  • Revised Date : 2026-03-06
  • Accepted Date : 2026-03-25
  • DOI :https://doi.org/10.14481/jkges.2026.27.4.37
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