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http://dx.doi.org/10.12814/jkgss.2020.19.3.035

Experimental Study on Soft Ground with DCM Column  

Hong, Gigwon (Institute of Technology Research and Development, Korea Engineering & Construction)
Publication Information
Journal of the Korean Geosynthetics Society / v.19, no.3, 2020 , pp. 35-44 More about this Journal
Abstract
This study described the result of laboratory model tests, in order to compare the improvement effect of the DCM column installed on the soft ground according to DCM column type. In the laboratory model test, the non-reinforced type and the 3 types of DCM column were applied, and the behavior (settlement, lateral flow) of soft ground was evaluated under the surcharge load condition for each type. The settlement evaluation result showed that the settlement of soft ground without DCM column occurred rapidly under the low load condition, but the settlement of the soft ground with the DCM column had relatively small settlement. The evaluation result of lateral flow in the soft ground showed that the soft ground with DCM column had lower lateral displacement than the soft ground without DCM column. Especially, the lateral displacement under the same load condition decreased in the order of pile type, wall type, and grid type. Therefore, it confirmed that the improvement effect of soft ground was excellent when the DCM of grid type was applied for settlement and lateral flow.
Keywords
Deep cement mixing (DCM); Soft ground; Ground improvement; Lateral flow;
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