LATERAL PRESSURES ON RETAINING WALLS DUE TO LOADS ON SURFACE OF GRANULAR BACKFILL
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概要
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The lateral pressure transmittal through different types of backfill material; characterized through a material parameter E/G; subjected to different types of contact pressure on its surface is evaluated theoretically by the use of the concept, in which it is considered that E/G>2(1+ν). The backfill material extending upto infinity depth as well as limited by the presence of rigid boundaries having different frictional characteristics have been considered. The physical and mechanical characteristics of the granular materials affecting the development of lateral pressures on retaining wall are investigated. The model used in the analysis is found to be applicable to a wide range of materials ranging from solid like at one end to liquid like at the other end.Qualitative numerical results over a wide range of the values of the material parameter (E/G) have been presented in a non-dimensional form to elucidate its influence on this problem. The results are also compared with that of Boussinesq's approach. It is observed that the softer/looser the backfill, the poorer is pressure transmission in horizontal direction resulting in a overall decrease of the lateral pressure on the retaining structure. The proposed model gives a partial explanation of the divergences between the results of the existing theories and reality.
- 社団法人地盤工学会の論文
- 1980-06-15