Permeable paving structure for sustainable mitigation of urban heat island effect

A technology of urban heat island effect and pavement, which is applied in the direction of on-site paved concrete pavement, pavement details, climate change adaptation, etc., can solve the problems that cannot be achieved, improve the urban ecological environment, etc. The effect of ecological protection

Active Publication Date: 2018-06-22
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the water-retaining pavement prolongs the time for facilities to alleviate the urban heat island effect, its effect time is only three or four days, and it still cannot achieve the expected effect of improving the urban ecological environment

Method used

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  • Permeable paving structure for sustainable mitigation of urban heat island effect
  • Permeable paving structure for sustainable mitigation of urban heat island effect
  • Permeable paving structure for sustainable mitigation of urban heat island effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A permeable pavement structure that can sustainably alleviate the urban heat island effect, such as figure 1 As shown, it consists of a permeable surface layer 1, a leveling sand layer 2, a permeable geotextile 3, a composite structure layer 8 and a bottom aquifer 7 arranged from top to bottom. The permeable surface layer 1 is paved with clay bricks with good water absorption and high strength, with a height of 80mm; the leveling sand layer 2 is paved with coarse sand with a particle size range of 0.5-1.0mm, and the thickness is about 25mm; the permeable geotextile 3 is paved with good hydrophilicity modified polyester; the composite structure layer 8 has a height of 300 mm and is composed of graded gravel 4 with a nominal maximum particle size of 26.5 mm and a series of capillary columns 5 vertically dispersed therein, such as figure 2 As shown, the capillary column 5 connects the upper permeable geotextile 3 and the water storage layer 7 at the bottom of the permeabl...

Embodiment 2

[0031] A permeable pavement structure suitable for sidewalks that can sustainably alleviate the urban heat island effect, consisting of a permeable surface layer 1, a leveling sand layer 2, a permeable geotextile 3, a composite structure layer 8 and a bottom aquifer 7 arranged from top to bottom . The permeable surface layer 1 is paved with concrete bricks with good water absorption and high strength, with a height of 60 mm; the leveling sand layer 2 is paved with coarse sand with a particle size of 0.5 mm, and the thickness is 20 mm; the permeable geotextile 3 is modified with good hydrophilicity Polyester; the composite structure layer 8 has a height of 250mm, and is composed of graded gravel 4 with a nominal maximum particle size of 19.0mm and a series of capillary columns 5 vertically dispersed in it. The capillary columns 5 connect the upper permeable geotextile 3 and the permeable The water storage layer 7 at the bottom of the pavement structure, the capillary column 5 i...

Embodiment 3

[0033] A permeable pavement structure that can sustainably alleviate the urban heat island effect is used for light-duty driveways. It consists of a top-down permeable surface layer 1, a leveling sand layer 2, a permeable geotextile 3, a composite structure layer 8, and a bottom aquifer 7 composition. The permeable surface layer 1 is paved with concrete bricks with good water absorption and high strength, with a height of 80mm; the leveling sand layer 2 is paved with coarse sand with a particle size of 0.5-1.0mm, and the thickness is 30mm; the permeable geotextile 3 is paved with good hydrophilicity Modified polyester; the composite structure layer 8 has a height of 400 mm, and is composed of graded gravel 4 with a nominal maximum particle size of 26.5 mm and a series of capillary columns 5 vertically dispersed in it, and the capillary columns 5 are connected to the upper permeable geotextile 3 And the water storage layer 7 at the bottom of the infiltration pavement structure,...

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Abstract

The invention relates to a permeable paving structure for sustainable mitigation of an urban heat island effect. The permeable paving structure is composed of a water permeable surface layer, a leveling sand layer, a water permeable geotechnical cloth, a composite structural layer and a bottom water storage layer which are arranged from top to bottom; and the composite structural layer comprises grading crushed stones and capillary columns which are disposed in the grading crushed stones and of which the two ends are separately connected to the water permeable geotechnical cloth and the waterstorage layer. Compared with the prior art, the permeable paving structure for the sustainable mitigation of the urban heat island effect effectively prolongs the time for the permeable pavement to lower the surface temperature and continuously mitigates the urban heat island effect.

Description

technical field [0001] The invention relates to the field of infrastructure, in particular to a permeable pavement structure for sustainably alleviating the urban heat island effect. Background technique [0002] The development of urbanization leads to the continuous increase of impermeable pavement, which cuts off the connection between the natural soil and the atmosphere, hinders the heat and water exchange between the ground and the air, and the solar radiation energy absorbed by the surface is greater than the thermal radiation emitted to the outer space Energy, resulting in the continuous accumulation of heat on the surface, resulting in a huge difference between the urban ecological environment and the natural ecological environment, and the urban heat island effect is increasing. [0003] As one of the low-impact development technologies, permeable pavement can change the seepage properties of the underlying surface of the city, increase the infiltration of rainwater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C11/00E01C11/22
CPCE01C7/32E01C11/00E01C11/225Y02A30/60
Inventor 李田刘勇詹宇聪姜懿凇罗彪
Owner TONGJI UNIV
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