Study on Variation of Surface Runoff and Soil Moisture Content in the Subgrade of Permeable Pavement Structure
The self-designed indoor simulated rainfall device was used to rain on five types of pavement structures with 4 types of rainfall intensity (2.5 mm/min, 3.4 mm/min, 4.6 mm/min, and 5.5 mm/min). The effect of rainfall intensity on the surface runoff, the relation between the subgrade soil moisture co...
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Series: | Advances in Civil Engineering |
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doaj-b48486c28fe74fbf82e099163f13d9b22020-11-25T02:35:49ZengHindawi LimitedAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88366438836643Study on Variation of Surface Runoff and Soil Moisture Content in the Subgrade of Permeable Pavement StructureLijun Hou0Yuan Wang1Fengchun Shen2Ming Lei3Xiang Wang4Xiaochong Zhao5Shuling Gao6Abdullah Alhaj7Power China Roadbridge Group Co., Ltd., Beijing 100048, ChinaPower China Roadbridge Group Co., Ltd., Beijing 100048, ChinaPower China Roadbridge Group Co., Ltd., Beijing 100048, ChinaPower China Roadbridge Group Co., Ltd., Beijing 100048, ChinaPower China Roadbridge Group Co., Ltd., Beijing 100048, ChinaSchool of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, ChinaSchool of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, ChinaDepartment of Geosciences and Geological and Petroleum Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USAThe self-designed indoor simulated rainfall device was used to rain on five types of pavement structures with 4 types of rainfall intensity (2.5 mm/min, 3.4 mm/min, 4.6 mm/min, and 5.5 mm/min). The effect of rainfall intensity on the surface runoff, the relation between the subgrade soil moisture content changes, and the influence of initial soil water content on rain infiltration rate are studied. The test results show that the surface runoff coefficient of densely asphalted pavement is greater than 90% in drainage pavements and it has little influence on the reducing and hysteresis of the flood peak. The surface runoff coefficient of large-void asphalt pavement (permeable) is less than 40%. Although the large-void asphalt pavement (permeable) can reduce a small amount of surface runoff, it has no obvious effect on the reduction and hysteresis of the flood peak. In semipermeable pavement, with the increasing of the thickness of base (graded gravel), the surface runoff coefficient decreases at different rainfall intensities, parts of the surface runoff are reduced, and the arrival of flood peaks is delayed. In permeable roads, almost no surface runoff occurred. As time continued, the soil moisture content quickly reached a saturated state and presented a stable infiltration situation under the action of gravity and the gradient of soil water suction. As the initial moisture content increases, the initial infiltration rate decreases and the time to reach a stable infiltration rate becomes shorter. The drier the soil, the greater the initial infiltration rate and the higher the soil moisture content after infiltration stabilization. Permeable roads can greatly alleviate the pressure of urban drainage and reduce the risk of storms and floods.http://dx.doi.org/10.1155/2020/8836643 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lijun Hou Yuan Wang Fengchun Shen Ming Lei Xiang Wang Xiaochong Zhao Shuling Gao Abdullah Alhaj |
spellingShingle |
Lijun Hou Yuan Wang Fengchun Shen Ming Lei Xiang Wang Xiaochong Zhao Shuling Gao Abdullah Alhaj Study on Variation of Surface Runoff and Soil Moisture Content in the Subgrade of Permeable Pavement Structure Advances in Civil Engineering |
author_facet |
Lijun Hou Yuan Wang Fengchun Shen Ming Lei Xiang Wang Xiaochong Zhao Shuling Gao Abdullah Alhaj |
author_sort |
Lijun Hou |
title |
Study on Variation of Surface Runoff and Soil Moisture Content in the Subgrade of Permeable Pavement Structure |
title_short |
Study on Variation of Surface Runoff and Soil Moisture Content in the Subgrade of Permeable Pavement Structure |
title_full |
Study on Variation of Surface Runoff and Soil Moisture Content in the Subgrade of Permeable Pavement Structure |
title_fullStr |
Study on Variation of Surface Runoff and Soil Moisture Content in the Subgrade of Permeable Pavement Structure |
title_full_unstemmed |
Study on Variation of Surface Runoff and Soil Moisture Content in the Subgrade of Permeable Pavement Structure |
title_sort |
study on variation of surface runoff and soil moisture content in the subgrade of permeable pavement structure |
publisher |
Hindawi Limited |
series |
Advances in Civil Engineering |
issn |
1687-8086 1687-8094 |
publishDate |
2020-01-01 |
description |
The self-designed indoor simulated rainfall device was used to rain on five types of pavement structures with 4 types of rainfall intensity (2.5 mm/min, 3.4 mm/min, 4.6 mm/min, and 5.5 mm/min). The effect of rainfall intensity on the surface runoff, the relation between the subgrade soil moisture content changes, and the influence of initial soil water content on rain infiltration rate are studied. The test results show that the surface runoff coefficient of densely asphalted pavement is greater than 90% in drainage pavements and it has little influence on the reducing and hysteresis of the flood peak. The surface runoff coefficient of large-void asphalt pavement (permeable) is less than 40%. Although the large-void asphalt pavement (permeable) can reduce a small amount of surface runoff, it has no obvious effect on the reduction and hysteresis of the flood peak. In semipermeable pavement, with the increasing of the thickness of base (graded gravel), the surface runoff coefficient decreases at different rainfall intensities, parts of the surface runoff are reduced, and the arrival of flood peaks is delayed. In permeable roads, almost no surface runoff occurred. As time continued, the soil moisture content quickly reached a saturated state and presented a stable infiltration situation under the action of gravity and the gradient of soil water suction. As the initial moisture content increases, the initial infiltration rate decreases and the time to reach a stable infiltration rate becomes shorter. The drier the soil, the greater the initial infiltration rate and the higher the soil moisture content after infiltration stabilization. Permeable roads can greatly alleviate the pressure of urban drainage and reduce the risk of storms and floods. |
url |
http://dx.doi.org/10.1155/2020/8836643 |
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