A design method of anti-storm and waterlogging recycled permeable concrete pavement

A technology of permeable concrete and concrete pavement, applied to ceramic products, other household appliances, geometric CAD, etc., can solve the problems of inaccurate control of the porosity of permeable concrete, inability of permeable roads to meet waterlogging requirements, poor water permeability and other problems, and achieve relief Urban heat island effect, solving the problem of resource reuse, not easy to block the effect

Active Publication Date: 2022-04-26
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A lot of research has been carried out on the water permeability of permeable concrete and the application of urban rainwater management at home and abroad. However, the porosity of traditional permeable concrete cannot be accurately controlled, the water permeability is poor, and there is a contradiction between water permeability and strength. The permeable roads cannot meet the waterlogging requirements. At present, there are few studies on the design of permeable concrete for different levels of rainstorms.

Method used

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  • A design method of anti-storm and waterlogging recycled permeable concrete pavement
  • A design method of anti-storm and waterlogging recycled permeable concrete pavement
  • A design method of anti-storm and waterlogging recycled permeable concrete pavement

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Step 1. Divide the accumulated rainfall within 24h of the rainstorm condition by the drainage time of this condition, and obtain the precipitation velocity range of the torrential rain as 0.03-0.06mm / s; 0.5mm / s; according to the relationship between water permeability coefficient and porosity (1), it is determined that the optimal porosity range for different rainstorm grades is 0.09-0.1%.

[0049] Step 2. A new type of rainstorm-resistant waterlogging regenerated permeable concrete pavement. According to the drainage requirements of rainstorm, the aperture is selected to be 0.7mm, and 25 permeable holes are evenly arranged on every 1 square decimeter, in a 5×5 arrangement, and the porosity is 0.096 %.

[0050] Step 3. Determine the strength grade of the new type of recycled permeable concrete to be 55MPa. According to the design strength grade and formula (4), the water-binder ratio is calculated to be 0.41, and the mix ratio design is carried out. Cement, water, sand,...

Embodiment 2

[0054] Step 1. Divide the accumulated rainfall within 24h of the rainstorm condition by the drainage time of this condition, and obtain the precipitation velocity range of the torrential rain as 0.03-0.06mm / s; 0.5mm / s; according to the relationship between water permeability coefficient and porosity (1), it is determined that the optimal porosity range for different rainstorm grades is 0.09-0.1%.

[0055] Step 2. A new type of rainstorm-resistant waterlogging regenerated permeable concrete pavement. According to the drainage requirements of rainstorm, the aperture is selected as 1mm, and 12 permeable holes are evenly arranged on every 1 square decimeter, in a 3×4 arrangement, and the porosity is 0.094% .

[0056] Step 3. Determine the strength grade of the new type of recycled permeable concrete to be 55MPa. According to the design strength grade and formula (4), the water-binder ratio is calculated to be 0.41, and the mix ratio design is carried out. Cement, water, sand, sili...

Embodiment 3

[0060] Step 1. Divide the accumulated rainfall within 24 hours of the heavy rainstorm condition by the drainage time of this condition, and obtain the precipitation velocity range of the heavy rainstorm as 0.03-0.14mm / s; 0.5mm / s; according to the relationship between water permeability coefficient and porosity (1), it is determined that the optimal porosity range for different rainstorm grades is 0.1-0.11%.

[0061] Step 2. A new type of rainstorm-resistant waterlogging regenerated permeable concrete pavement. According to the drainage requirements of heavy rainstorms, for heavy rainstorms, the aperture is selected to be 0.8mm, and 20 permeable holes are evenly arranged per 1 square decimeter, using a 4×5 arrangement. The rate is 0.100%.

[0062] Step 3. Determine the strength grade of the new type of recycled permeable concrete to be 60MPa. According to the design strength grade and formula (4), the water-binder ratio is calculated to be 0.37, and the mix ratio design is carr...

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Abstract

The present invention relates to a design method of anti-storm waterlogging regeneration permeable concrete pavement, which is characterized in that it comprises the following steps: S01 to determine the water permeability coefficient K of the concrete pavement when the set drainage standard is reached; S02 to obtain the ratio between the concrete porosity P and the water permeable system K Relational expression one, and determine the porosity P corresponding to the water permeability coefficient K in step S01 according to the first relational expression; S03 obtains the second relational expression between the concrete strength and the porosity P, and determines the concrete according to the second relational expression Intensity; S04 carries out the permeable hole design of the concrete pavement according to the relationship formula three between the porosity P and the permeable hole, and the permeable hole design includes the aperture and hole distribution design of the permeable hole; S05 carries out the matching of the concrete according to the concrete strength determined in step S03 than design. This method can design the porosity and mix ratio of permeable concrete according to the rainstorm level and the waterlogging requirements that the pavement needs to meet.

Description

technical field [0001] The invention relates to a method for designing a concrete pavement, in particular to a method for designing a regenerated permeable concrete pavement against heavy rain and waterlogging. Background technique [0002] Urban waterlogging has swept across the world, seriously threatening the normal operation of cities and people's daily life. In order to reduce the occurrence of urban rainstorm and waterlogging disasters and improve ecosystem functions, a global upsurge in the construction of "sponge cities" has been set off. Paving permeable concrete pavement can quickly infiltrate rainstorm runoff, effectively manage urban rainwater, and reduce the probability of rainstorm and waterlogging disasters. It has a good application prospect and has attracted extensive attention in the field of municipal engineering. [0003] At home and abroad, a lot of research has been carried out on the water permeability of permeable concrete and the application of urba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/00G06F30/13C04B111/20C04B111/52
CPCC04B28/04G06F30/13C04B2111/00284C04B2111/0075C04B2111/00991C04B2111/20C04B2111/52C04B2201/50C04B2201/52C04B18/08C04B18/146C04B14/48C04B14/06C04B18/16C04B2103/302C04B38/0003C04B38/0074
Inventor 朱平华牛志刚陈春红刘惠王新杰封金财
Owner CHANGZHOU UNIV
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