2009 Fiscal Year Final Research Report
Floating type ground improvement system in consideration with environmental aspects
| Project/Area Number |
20860058
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| Research Category |
Grant-in-Aid for Young Scientists (Start-up)
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| Allocation Type | Single-year Grants |
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| Research Field |
Geotechnical engineering
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| Research Institution | Yamaguchi University |
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Principal Investigator |
ISHIKURA Ryohei Yamaguchi University, 大学院・理工学研究科, 助教 (90510222)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 地盤改良 / 非着底型 / 応力分担比 / 圧密沈下 |
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| Research Abstract |
Floating-type deep mixing soil stabilization is a method with acceptable settlement for maintaining the proper functioning of high standard roads or high embankments on soft grounds. The advantage of this method is that it reduces the cost of construction of soil structures on deep soft soil layers. In addition, the soft soil layers are retained under the improved portion ; this ensures a smooth flow of ground water in this type of improved ground, which is not the case in ground improvement by the end-bearing-type stabilization method.
In this study, in order to evaluate the stress distribution ratio of the improved ground with respect to the improvement ratio and improvement depth, model tests and analysis were conducted. Furthermore, a method for predicting the total settlement for this type of improved ground was confirmed from the field measurements in full scale test embankments.
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