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Dynamic Bearing Pressure of Inverted T-type Retaining Walls Subjected to Seismic Motion

지진시 동토압을 받는 역 T형 옹벽의 접지압 산정에 관한 연구

  • 이진선 (원광대학교 토목환경공학과)
  • Received : 2011.12.28
  • Accepted : 2012.04.05
  • Published : 2012.04.30

Abstract

Pseudo static analysis using the Mononobe-Okabe method and numerical analysis considering a small strain nonlinearity from the soil were performed to determine the bearing pressure changes of the inverted T-type retaining wall subjected to earthquake motions. In many cases, an inverted 'T' type retaining wall of more than 10 m shows bearing capacity failure under earthquake conditions, despite showing sufficient bearing capacity during normal conditions. The most important reason for this is the change of the effective base area during an earthquake. In this paper, the change of the effective base area of an inverted 'T' type wall is analyzed by using finite difference element code (FLAC). In addition, the effect of dynamic bearing capacity coefficients (which has been suggested by several researchers but not adopted in current design codes and procedures) was verified.

Acknowledgement

Supported by : 원광대학교

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