2015 Fiscal Year Final Research Report
New permeable pavement structure to reduce stormwater runoff
| Project/Area Number |
26560192
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Natural disaster / Disaster prevention science
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| Research Institution | Yamaguchi University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | ゲリラ豪雨 / 道路舗装 / 水理特性 / 力学特性 |
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| Outline of Final Research Achievements |
As a measure to reduce damages in torrential rainfall and urban flood, this study proposes a new permeable pavement, which has inlet surface along the subbase layer. In order to grasp basic hydraulic and mechanical characteristics of this pavement, large scale permeability test for crusher-run material with changing grain size distribution and repeated plate loading test for pavement model under dry and saturated condition were carried out. The permeability of crusher-run material was around 0.1 cm/sec regardless of the grain size distribution. The repeated loading test for pavement model showed that the deflection of pavement surface and the vertical stress on subgrade surface increases due to pavement saturation. These mechanical changes are from degradation of subbase stiffness with saturation.
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| Free Research Field |
地盤工学
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