Analysis on the Seismic Load Reduction Effect of a Ground by Considering Pile Strength

말뚝 강성을 고려한 지반의 지진하중 저감 효과에 관한 해석 연구

  • Received : 2012.09.13
  • Accepted : 2012.10.25
  • Published : 2012.10.30


In this study, a numerical analysis to evaluate the reduction of seismic load due to pile group was performed and compared the peak ground acceleration(PGA) measured at free-field and foundation. The special attention was given to the amplification of seismic acceleration on the foundation due to the pile effects. The analysis considering pile effects was carried out for 4, 8 and 12 piles with same condition by PLAXIS 2D Dynamics. Based on the analysis results, it is found that the overall reduction in seismic load due to foundation and reduction rates are similar irrespective of pile numbers. This study gives a possibility for effective design of piled foundation by reducing seismic load about 20~25%.


Seismic Load;PHC Pile;Amplification;PLAXIS;Numerical Analysis


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Supported by : 한국토지주택공사(LH)