CN211547135U

CN211547135U - Steel fiber concrete water permeable brick for increasing underwater seepage amount of rain

Info

Publication number: CN211547135U
Application number: CN201820864933.9U
Authority: CN
Inventors: 李顺群; 陈立航; 张勋程; 李�杰; 申道明; 马芸; 周亚东; 王英红
Original assignee: Tianjin Chengjian University
Current assignee: Tianjin Chengjian University
Priority date: 2018-05-29
Filing date: 2018-05-29
Publication date: 2020-09-22
Anticipated expiration: 2028-05-29

Abstract

The utility model provides a steel fiber concrete permeable brick for increasing the underwater seepage of rain, which is laid on the earth surface, and steel fibers are added into the concrete permeable brick; the quantity of the steel fibers in the concrete water permeable brick is set according to the strength requirement of a road pavement. The utility model has the advantages that: has the characteristics of good water permeability and high strength. The strength of the concrete permeable brick is improved to meet the requirements of construction and use, so that the use area and the use scale of the concrete permeable brick are increased, and the purposes of increasing the underwater seepage of rain and keeping ecological balance to promote harmonious development of people and nature are achieved.

Description

Steel fiber concrete water permeable brick for increasing underwater seepage amount of rain

Technical Field

The utility model belongs to sponge city construction field relates to a steel fibre concrete brick that permeates water for increasing rainfall under water seepage volume. The method is suitable for areas such as residential areas, parking lots, sidewalks and the like.

Background

Under the background of rapid development of urbanization, the urban scale is continuously enlarged to cause the original natural ground to be covered by impervious materials such as cement, asphalt and the like, so that infiltration of rainwater on the ground surface is blocked, and the drainage burden of an urban pipe network is increased. Meanwhile, the problems of insufficient groundwater supply, ground subsidence and the like are caused. In addition, rainwater cannot reach the ground surface, so that the temperature and the humidity of the urban ground surface cannot be adjusted, and a heat island phenomenon is caused. Therefore, there is a strong need for a technique and method that can improve the permeability of urban road pavements.

The sponge city construction can effectively solve the urban rainfall flood disaster, and achieve the purposes of increasing the underwater seepage of rain and keeping ecological balance so as to promote the harmonious development of human and nature. According to the traditional road design theory, the highway and the urban road pavement have the characteristics of compactness, smoothness, wear resistance, skid resistance and the like, and the surface layer of the road is made of materials such as dense asphalt mixture, cement concrete and the like, so that the water permeability of the urban road pavement is poor.

The use of water permeable pavements improves water impermeability in conventional road designs. The road engineering of the Beijing south-North Long street adopts a water permeable pavement with 28d compressive strength of 15.3 MPa; water permeable pavements are adopted in Shanghai 2010 world expo parks, Guangzhou Linjiang great road landscape roads, old city road reconstruction and the like. However, these are applied to a region where the road surface strength is not high. The road surface for urban traffic has certain requirements on the strength of concrete, and the concrete permeable brick cannot be widely applied to urban roads due to the limitation of the strength. Therefore, a high-strength concrete water permeable brick is urgently needed, and the high-strength concrete water permeable brick provides technical support for solving the problems of the use area and the use scale of the concrete water permeable brick.

Disclosure of Invention

The utility model aims at providing a steel fibre concrete brick that permeates water for increasing rainfall has improved the concrete and has permeated water the intensity performance such as brick to can increase the concrete and permeate water the use area and the use scale of brick.

In order to achieve the above object, the utility model adopts the following technical scheme: the steel fiber concrete water permeable brick is laid on a surface soil layer of residential areas, parking lots and sidewalk areas and consists of steel fibers and the concrete water permeable bricks, and the steel fibers are uniformly distributed in the concrete water permeable bricks.

The concrete water permeable brick is a porous concrete brick formed by water permeable concrete.

The holes of the porous concrete brick are of a honeycomb structure which is uniformly distributed.

The length-diameter ratio of the steel fiber is 1: 2.

The steel fiber is made by a thin steel wire cutting method, cold-rolled strip steel shearing, steel ingot milling or molten steel rapid condensation method.

The utility model has the advantages that: the performance of the concrete with the steel fiber is compared with that of the concrete without the steel fiber: the early crack resistance is improved by 1.5 to 2.0 times; the tensile strength and the bending strength are improved by 1.5 to 1.8 times; an increase in elongation of about 2-fold; the compressive strength is improved by 1.0 to 1.3 times; the shear strength is improved by 1.5 to 2.0 times; the toughness is improved by 40-200 times; an improvement of 5 to 10 times in impact resistance; simultaneously, the fatigue strength, the impact resistance and the resistance to freeze-thaw action are improved. The invention enhances various performances of the concrete permeable brick and provides technical support for sponge city construction.

Drawings

Fig. 1 is a section view of the steel fiber concrete water permeable brick for increasing the underwater seepage of rain.

In the figure:

1. steel fiber 2 concrete water permeable brick 3. soil body layer

Detailed Description

The structure of the steel fiber concrete permeable brick for increasing the underwater seepage of rain of the utility model is explained by combining the attached drawings.

As shown in figure 1, the design principle of the steel fiber concrete permeable brick for increasing the infiltration capacity under rain water of the invention is as follows: the permeable brick material adopts permeable concrete which is widely used at present and is formed by mixing aggregate, cement, reinforcing agent and water.

The invention focuses on improving the problem of rain water seepage and solves the problem by increasing the use area and the use scale of the concrete water permeable brick. In order to meet the requirements of increasing the use area and the use scale of the concrete water permeable brick, the most important is to solve the performance problems of the concrete water permeable brick, such as strength and the like. The steel fiber concrete water permeable brick is composed of steel fibers and a concrete water permeable brick. The concrete permeable brick is a porous concrete brick prepared by mixing aggregate, cement, reinforcing agent and water, has a honeycomb structure with uniformly distributed holes inside, and has the characteristics of air permeability and water permeability. The steel fiber is prepared by cutting thin steel wire, shearing cold-rolled strip steel, milling steel ingot or rapidly condensing molten steel to obtain fiber with length-diameter ratio of 1: 2. Adding a certain amount of steel fibers into common concrete to uniformly distribute the steel fibers into the common concrete to form a novel multiphase composite material, wrapping the steel fibers into the concrete, and improving the ductility of the concrete by using the tensile strength, the elastic modulus and the deformability of the steel fibers; and through the uniformly distributed steel fibers, the stress concentration at the end part of the fine crack caused by the load in the concrete is reduced, thereby effectively hindering the expansion of the micro crack and the formation of the macro crack in the concrete and obviously improving the tensile property, the bending resistance, the impact resistance and the fatigue resistance of the concrete.

The utility model discloses a steel fibre concrete brick structure of permeating water for increasing rainfall is, steel fibre concrete brick of permeating water is including steel fibre 1, concrete brick 2 and the soil body 3 of permeating water, during steel fibre 1 added concrete brick 2 of permeating water, pour the concrete brick 2 of permeating water that adds steel fibre 1 on the soil body 3. When rainwater falls to the ground, the rainwater can reach the ground surface through the gaps in the steel fiber concrete water permeable bricks, and the rainwater infiltration capacity is increased.

The utility model discloses a steel fibre concrete brick that permeates water for increasing rainfall under water can improve rainfall seepage under water, and supply underground water resource exhausted day by day improves earth's surface ecological cycle, solves because the negative effects that extensive modernization city construction brought, is favorable to reaching increasing rainfall seepage under water, keeps ecological balance to promote the purpose of people and nature harmonious development. The invention provides technical support for sponge city construction.

Claims

1. A steel fibre concrete brick that permeates water for increasing infiltration capacity under rainwater, characterized by: the steel fiber concrete water permeable brick is laid on a surface soil layer (3) of residential areas, parking lots and sidewalk areas and consists of steel fibers (1) and concrete water permeable bricks (2), and the steel fibers (1) are uniformly distributed in the concrete water permeable bricks (2).

2. The steel fiber concrete permeable brick for increasing the infiltration capacity of rainwater according to claim 1, which is characterized in that: the concrete water permeable brick (2) is a porous concrete brick formed by water permeable concrete.

3. The steel fiber concrete permeable brick for increasing the infiltration capacity of rainwater according to claim 2, which is characterized in that: the holes of the porous concrete brick are of a honeycomb structure which is uniformly distributed.

4. The steel fiber concrete permeable brick for increasing the infiltration capacity of rainwater according to claim 1, which is characterized in that: the length-diameter ratio of the steel fiber (1) is 1: 2.

5. The steel fiber concrete permeable brick for increasing the infiltration capacity of rainwater according to claim 4, which is characterized in that: the steel fiber (1) is prepared by a thin steel wire cutting method, cold-rolled strip steel shearing, steel ingot milling or molten steel rapid condensation method.