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李萬烈,李承輝 동아대학교 환경문제연구소 1994 硏究報告 Vol.17 No.1
The elastic theory is generally used to calculate lateral earth pressures due to surcharge loads, but this was sometimes discord with the measurements fo lateral pressures on the condition of surcharge loads. In this study, the methods to obtain the lateral pressures, the elastic and the plastic theories and the empirical methods, applied to the results of measurement on the condition of surcharge loads. As a result, it showed that the lateral pressures obtained by the earth pressure coefficient times the vertical stress calculated by the elastic theory should be not used. For the surcharges of point load, the Mindlin's method agreed roughly with the results of measurements when the distance from a surcharge to a wall, a, was less than about 0.5times of the depth, and the Boussinesq's method was in closely accord with them when a>0.5. For the surcharges of line and rectangular loads, it was difficult to look for the trend between the calculated values and the measurements, because of the insufficiently measured data. Especially, the application of the elastic theory showed the overestimated results when the surcharges of rectangular loads were distant from the wall.
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