Buried water-permeable drainage structure and construction method thereof

Abstract

The application provides a buried water-permeable drainage structure and a construction method thereof. The structure is arranged on one side of a road base and comprises a plurality of tee connectors, a plurality of first perforated pipes and a plurality of second perforated pipes. The plurality of tee connectors are arranged in the water-permeable concrete at intervals, and a plurality of water passing holes are formed in the upper ends of the tee connectors. The water passing holes are located in the bottom region of the water-permeable surface layer. The first perforated pipes are arranged in the water-permeable concrete below the water-permeable surface layer, and one end of each of the first perforated pipes is connected to the first side end of the corresponding tee connector, and the other end is connected to the corresponding first rainwater inlet. The second perforated pipes are arranged in the water-permeable concrete, and one end of each of the second perforated pipes is connected to the second side end of the corresponding tee connector, and the other end is connected to the corresponding second rainwater inlet. The structure and the construction method can enhance the flexibility of the sponge facility, prevent water from being blocked at the vertical connection part of the road structure, reduce the occurrence of road operation diseases, and achieve convenient construction and full coverage of road construction conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building, in particular to a buried water-permeable drainage structure and a construction method thereof. BACKGROUND

[0002] With the development of sponge city construction, the focus is to solve the problem of urban waterlogging, to reduce rainwater runoff pollution, to pay attention to rainwater collection and utilization, and to make the city have good "elasticity" and "resilience" in adapting to climate change and resisting rainstorm disasters.

[0003] With the increase of running time, the water permeability of road sponge facilities is continuously attenuated, and without targeted technical measures, it will become an important factor of road diseases. SUMMARY

[0004] One of the purposes of the present application is to provide a buried water-permeable drainage structure and a construction method thereof, so as to solve the problem of poor resilience of the existing road sponge facilities due to the attenuation of water permeability.

[0005] The technical solution of the present application is:

[0006] A buried water-permeable drainage structure is arranged on one side of a road base, comprising a plurality of tee connectors, a plurality of first perforated pipes and a plurality of second perforated pipes; a plurality of tee connectors are spaced apart and buried in the water-permeable concrete, and a plurality of water passing holes are formed in the upper end, the water passing holes are located in the bottom area of the water-permeable surface layer; the first perforated pipe is buried in the water-permeable concrete below the water-permeable surface layer, and one end is communicated with the first side end of the corresponding tee connector, and the other end is communicated with the corresponding first rainwater inlet; the second perforated pipe is buried in the water-permeable concrete, and one end is communicated with the second side end of the corresponding tee connector, and the other end is communicated with the corresponding second rainwater inlet.

[0007] As a technical solution of the present application, the distance between adjacent tee connectors is 12-24m.

[0008] As a technical solution of the present application, the tee connector is detachably provided with a protective cover or a grating.

[0009] As a technical solution of the present application, the grating is a circular structure and has a slope of 1%-2% from the outer end to the center, and a plurality of spaced water filtering holes are arranged on the top of the grating.

[0010] As a technical solution of the present application, the water-permeable surface layer comprises water-permeable bricks, water-permeable asphalt or EPDM.

[0011] As a technical scheme of the present application, the waterproof layer is arranged at the bottom and the side of the rectangular groove of the pervious concrete, and the waterproof layer comprises waterproof mortar or waterproof asphalt.

[0012] A construction method of a buried pervious drainage structure is used for construction under the working condition of newly-built roads, and comprises the following steps:

[0013] Step one: level the roadbed, construct the cushion layer, and install the curbstone;

[0014] Step two: install the base layer template, and reserve the rectangular groove for the construction of the buried pervious drainage structure;

[0015] Step three: pour the road base layer concrete on the base layer template to form the base layer, and make the waterproof layer in the buried pervious drainage structure at one side of the base layer;

[0016] Step four: install the first perforated pipe and the second perforated pipe in the buried pervious drainage structure respectively, and temporarily fix them by using the steel support; install the plurality of tee connectors in the buried pervious drainage structure, and connect the first side end of the tee connector with one end of the first perforated pipe, and connect the second side end of the tee connector with one end of the second perforated pipe;

[0017] Step five: backfill the rectangular groove with the pervious concrete and roll and form it; clean the base layer, lay the anti-cracking paste, and construct the adhesive layer;

[0018] Step six: construct the pervious surface layer on the upper part of the base layer, and reserve the space above the upper part of the tee connector; install the protective cover on the top of the tee connector; regularly maintain the first perforated pipe, the second perforated pipe, the tee connector and the road surface during the operation period; when the pervious property of the surface layer is almost exhausted, remove the protective cover, install the grating on the top of the tee connector, and continuously maintain the road.

[0019] A construction method of a buried pervious drainage structure is used for construction under the working condition of road repair, and comprises the following steps:

[0020] Step one: break the original road surface layer;

[0021] Step two: on the side of the road base layer along the slope direction, cut the seam on the original road base layer by using the diesel road cutting machine according to the size of the rectangular groove of the buried pervious drainage structure, and break the original road base layer structure for installing the rectangular groove of the buried pervious drainage structure by using the electric hammer, the pneumatic pick or the hydraulic breaker according to the actual working condition;

[0022] Step three: according to the damage condition of the existing curb and the actual situation of drainage, the existing curb is reinforced, replaced or replaced with a lying stone; the bottom and side of the rectangular trench are cleaned, and a waterproof layer is applied;

[0023] Step four: install the first perforated pipe and the second perforated pipe in the buried permeable drainage structure, and temporarily fix them with steel reinforcement support; install multiple three-way connectors in the buried permeable drainage structure, connect the first side end of the three-way connector with one end of the first perforated pipe, and connect the second side end of the three-way connector with one end of the second perforated pipe; backfill the rectangular trench with permeable concrete and roll it into shape;

[0024] Step five: check the original road base, and re-pour the base layer after removing the disease of the base plate; use milling machinery to mill the cemented material layer of the original road base; clean the base layer; use asphalt mastic to fill and compact the ordinary cracks, original construction joints and original expansion joints, and paste anti-cracking paste; construction of the adhesive layer;

[0025] Step six: construct a permeable surface layer on the upper part of the base layer and reserve space on the upper part of the three-way connector; install a protective cover on the top of the three-way connector; regularly maintain the first perforated pipe, the second perforated pipe, the three-way connector and the road surface during operation; when the permeability of the surface layer decays, remove the protective cover and install a grating on the top of the three-way connector, and continue to maintain the road.

[0026] The beneficial effects of the present application are:

[0027] The buried permeable drainage structure and the construction method of the buried permeable drainage structure of the present application propose a drainage structure and implementation method for compensating the permeability decay of the surface layer of the permeable road based on the concept of toughness. In view of the problem of permeability decay of the road sponge facility, a drainage structure considering the permeable road surface and the impermeable road surface is developed, which uses additional protective cover and grating replacement structure to enhance the toughness of the sponge facility. At the same time, the structure and method are designed to solve the problems of poor aesthetics and water blocking at the vertical connection part of the conventional drainage structure and road structure, and prone to road diseases. The buried permeable drainage structure is designed, more than 90% of the drainage structure is buried below the road surface, the water passing measure of the connecting piece (the upper part of the three-way connector) is optimized, and the occurrence of road operation diseases is reduced. In addition, in view of the problem that the working condition of the conventional drainage structure is not strong, the pavement (the connection between the permeable pavement and the drainage structure permeable material), the rainwater conveying channel (the first perforated pipe and the second perforated pipe), and the connection method (three-way connection and hot melt connection) are highly integrated, and convenient construction and full coverage of road construction working conditions (i.e. new road construction and road repair construction working conditions) are realized. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 The buried water-permeable drainage structure provided by the embodiments of the present application is shown in the diagram.

[0030] Figure 2 The first angle diagram of the buried water-permeable drainage structure provided by the embodiments of the present application is shown in the diagram.

[0031] Figure 3 The diagram of the tee connector provided by the embodiments of the present application is shown in the diagram.

[0032] Figure 4 The diagram of the water-permeable attenuated tee connector provided by the embodiments of the present application is shown in the diagram.

[0033] Figure 5 The diagram of the grate provided by the embodiments of the present application is shown in the diagram.

[0034] Figure: 1-protective cover; 2-tee connector; 3-water hole; 4-first perforated pipe; 5-water-permeable concrete; 6-waterproof layer; 7-water-permeable surface layer; 8-base layer; 9-cushion layer; 10-curbstone; 11-grate; 12-water filter hole. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0037] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] In the description of the application, it needs to be explained that the terms "upper", "lower", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is usually placed, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0039] In addition, in the present application, unless otherwise explicitly specified and limited, the first feature above or below the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0040] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0041] In the description of the application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] Embodiment:

[0043] Please refer to Figure 1 , please refer to Figures 2 to 5The application provides a buried water-permeable drainage structure arranged on one side of a road base 8, mainly comprising a plurality of three-way connectors 2, a plurality of first perforated pipes 4 and a plurality of second perforated pipes. The plurality of three-way connectors 2 are arranged in the water-permeable concrete 5 at intervals, and the upper ends are provided with a plurality of water passing holes 3. The water passing holes 3 are located at the bottom region of the water-permeable surface layer 7, which can prevent the water blocking effect of the three-way connectors 2 and avoid the occurrence of road diseases. The first perforated pipe 4 is arranged in the water-permeable concrete 5 below the water-permeable surface layer 7, and one end is connected to the first side end of the corresponding three-way connector 2, and the other end is connected to the corresponding first rainwater inlet. During the operation period, the first perforated pipe 4 can be dredged through the rainwater inlet and the upper part of the three-way connector 2. Meanwhile, the second perforated pipe is arranged in the water-permeable concrete 5, and one end is connected to the second side end of the corresponding three-way connector 2, and the other end is connected to the corresponding second rainwater inlet. During the operation period, the second perforated pipe can be dredged through the rainwater inlet and the upper part of the three-way connector 2.

[0044] It should be noted that the buried water-permeable drainage structure is arranged on one side of the road base 8, and the number thereof can be determined according to the road form. When the road is a single slope road, the buried water-permeable drainage structure is arranged on one side of the road in the downhill direction. When the road is a double slope road, the buried water-permeable drainage structure is arranged on both sides of the road in the downhill direction. Meanwhile, the distance between the adjacent three-way connectors 2 is 12-24 m, which serves as the connector between the adjacent first perforated pipe 4 and second perforated pipe. The adjacent pipes at other positions in the road are connected by means of hot melt connection. Meanwhile, the three-way connector 2 is also a conveying component of the road surface rainwater. In the normal use, the three-way connector 2 is detachably provided with a protective cover 1. The protective cover 1 is used to close the upper part of the three-way connector 2 in the initial operation period of the road, which is used to prevent sundries from entering the interior of the buried water-permeable drainage structure. After the road has been used for many years and the water permeability of the road has been greatly reduced, the protective cover 1 is removed, and a grating 11 is arranged on the top of the three-way connector 2.

[0045] It should be noted that the grating 11 is in a circular shape, and the top thereof has a slope of 1%-2% from the outer end to the center. The top of the grating 11 is provided with a plurality of filter holes 12 arranged at intervals. After the road has been used for many years and the water permeability of the road has been greatly reduced, the protective cover 1 on the upper part of the three-way connector 2 is replaced by the grating 11, which improves the drainage efficiency of the road surface layer and ensures the safety of drainage.

[0046] It should be noted that the water-permeable surface layer 7 can be made of water-permeable bricks, water-permeable asphalt or various conventional water-permeable paving materials such as EPDM. Meanwhile, the bottom and side of the rectangular groove where the water-permeable concrete 5 is arranged are provided with a waterproof layer 6, which can be made of waterproof mortar or waterproof asphalt and the like, so as to prevent rainwater from penetrating into the road structure layer. The backfill of the buried water-permeable drainage structure is the water-permeable concrete 5, which is beneficial to the construction operation.

[0047] In addition, the structure can be applied to both new road and road overhaul (sponge transformation) conditions.

[0048] Therefore, in the embodiment, a buried permeable drainage structure construction method is also provided, which is mainly applicable to the construction condition under the new road condition, and comprises the following steps:

[0049] Step one: level the roadbed, construct the cushion layer 9, and install the curb stone 10;

[0050] Step two: install the base layer 8 template, and reserve a rectangular trench for the construction of the buried permeable drainage structure;

[0051] Step three: pour the road base layer 8 concrete on the base layer 8 template to form the base layer 8, and make the waterproof layer 6 in the buried permeable drainage structure at one side of the base layer 8;

[0052] Step four: install the first perforated pipe 4 and the second perforated pipe in the buried permeable drainage structure respectively, and temporarily fix them by using the steel support; install the plurality of tee connectors 2 in the buried permeable drainage structure, connect the first side end of the tee connector 2 with one end of the first perforated pipe 4, and connect the second side end of the tee connector 2 with one end of the second perforated pipe; the spacing between the adjacent tee connectors 2 is 12-24 m, which is used as the connector between the adjacent first perforated pipe 4 and the second perforated pipe, and the hot melt connection is used to connect the adjacent pipes at other positions in the road;

[0053] Step five: backfill the rectangular trench with the pervious concrete 5 and roll it into shape; clean the base layer 8 by using the sweeper or manually, lay the anti-cracking paste, and construct the adhesive layer;

[0054] Step six: construct the pervious surface layer 7 on the upper part of the base layer 8, and reserve the space above the tee connector 2; install the protective cover 1 on the top of the tee connector 2; regularly maintain the first perforated pipe 4, the second perforated pipe, the tee connector 2 and the road surface during the operation period; when the surface layer permeability is almost exhausted, remove the protective cover 1, install the grating 11 on the top of the tee connector 2, and continuously maintain the road.

[0055] Meanwhile, in the embodiment, a buried permeable drainage structure construction method is also provided, which is mainly applicable to the construction condition under the road overhaul condition, and comprises the following steps:

[0056] Step one: break the original road surface layer;

[0057] Step two: according to the size of the rectangular trench of the buried water-permeable drainage structure, a diesel cutting machine is used to cut the original road base 8 on the side of the slope direction of the road base 8, and an electric hammer, a pneumatic pick or a hydraulic breaker is used to break the original road base 8 structure for installing the rectangular trench of the buried water-permeable drainage structure according to the actual working conditions;

[0058] Step three: according to the damage condition of the existing curb 10 and the actual drainage condition, the existing curb 10 is reinforced, replaced or replaced with a lying stone; the bottom and side surfaces of the rectangular trench are cleaned, and the waterproof layer 6 is constructed;

[0059] Step four: the first perforated pipe 4 and the second perforated pipe of the buried water-permeable drainage structure are installed and temporarily fixed by using a steel support; the plurality of three-way connectors 2 of the buried water-permeable drainage structure are installed, the first side end of the three-way connector 2 is connected with one end of the first perforated pipe 4, and the second side end is connected with one end of the second perforated pipe; the rectangular trench is backfilled with water-permeable concrete 5 and is formed by rolling;

[0060] Step five: the original road base 8 is checked, the base 8 plate disease is broken, and then a high-grade base 8 is recast; the milling machine is used to mill the cemented material layer of the original road base 8; the sweeper or manual cleaning of the base 8 is used; the ordinary cracks, original construction joints and original expansion joints are filled and compacted with asphalt mastic and are pasted with anti-cracking paste; the adhesive layer is constructed.

[0061] Step six: the water-permeable surface layer 7 is constructed on the upper part of the base 8, and the space above the three-way connector 2 is reserved; the protective cover 1 is installed on the top of the three-way connector 2; the maintenance of the first perforated pipe 4, the second perforated pipe, the three-way connector 2 and the road surface during the operation period is regularly done; when the surface layer water permeability decays, the protective cover 1 is removed, the grating 11 is installed on the top of the three-way connector 2, and the road maintenance is continuously done.

[0062] In conclusion, the buried permeable drainage structure and the buried permeable drainage structure construction method provided by the application propose a drainage structure and implementation method for compensating the permeability attenuation of the surface layer permeable road based on the concept of toughness. In view of the problem of permeability attenuation of the road sponge facility, a drainage structure that takes into account the surface layer permeable road and the surface layer impermeable road is developed. The additional protective cover 1 and the grate 11 replacement structure are used to enhance the toughness of the sponge facility. At the same time, the structure and method are aimed at the problems of the conventional drainage structure and the road structure, such as the unattractive connection, the water blocking at the vertical connection part, and the easy occurrence of road diseases. The buried permeable drainage structure is designed. More than 90% of the drainage structure is buried below the road surface layer. The water passing measures of the connecting piece (i.e. the upper part of the tee connector 2) are optimized to reduce the occurrence of road operation diseases. In addition, in view of the problem of poor adaptability of the conventional drainage structure, the pavement (the connection between the permeable pavement and the drainage structure permeable material), the rainwater conveying channel (the first perforated pipe 4 and the second perforated pipe), and the connection mode (the tee connection and the hot melt connection) are highly integrated to achieve convenient construction and full coverage of the road construction conditions (i.e. the construction conditions of new roads and road maintenance).

[0063] The above only describes the preferred embodiments of the application and is not intended to limit the application. Those skilled in the art can make various changes and modifications to the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A buried permeable drainage structure, installed on one side of a road base layer, characterized in that, The system includes multiple T-joints, multiple first perforated pipes, and multiple second perforated pipes. The multiple T-joints are spaced apart and embedded in the permeable concrete, each with multiple water-passing holes at its upper end, located at the bottom of the permeable surface layer. The first perforated pipes are embedded in the permeable concrete below the permeable surface layer, with one end connected to the first side end of the corresponding T-joint and the other end connected to the corresponding first rainwater inlet. The second perforated pipes are embedded in the permeable concrete, with one end connected to the corresponding... The second end of the tee connector is connected to the corresponding second rainwater inlet; a protective cover or grate is detachably installed on the tee connector, and after the permeability of the road surface layer has been reduced to almost nothing after the road is in operation, the tee connector is connected to the grate to replace the protective cover connected to the upper part of the tee connector, and to improve the drainage efficiency of the road surface layer; the grate has a circular structure and the top has a slope of 1%-2% from the outer end to the center of the circle, and multiple spaced filter holes are arranged on the top of the grate.

2. The buried permeable drainage structure according to claim 1, characterized in that, The spacing between adjacent T-joints is 12-24m.

3. The buried permeable drainage structure according to claim 1, characterized in that, The permeable surface layer includes permeable bricks, permeable asphalt, or EPDM.

4. The buried permeable drainage structure according to claim 1, characterized in that, The bottom and sides of the rectangular trench containing the permeable concrete are provided with a waterproof layer, which includes waterproof mortar or waterproof asphalt.

5. A construction method for a buried permeable drainage structure, used in the construction of new roads, characterized in that... Includes the following steps: Step 1: Level the roadbed, construct the subbase, and install the curb stones; Step 2: Install the base formwork and reserve a rectangular trench for the construction of the buried permeable drainage structure; Step 3: Pour road base concrete onto the base formwork to form the base layer; apply the waterproof layer of the buried permeable drainage structure on one side of the base layer; Step 4: Install the first perforated pipe and the second perforated pipe in the buried permeable drainage structure respectively, and temporarily fix them with steel reinforcement brackets; Install multiple T-connectors in the buried permeable drainage structure, and connect the first end of the T-connector to one end of the first perforated pipe and the second end to one end of the second perforated pipe. Step 5: Backfill the rectangular trench with permeable concrete and compact it; clean the base layer and apply crack-resistant tape; apply the adhesive layer. Step Six: Construct a permeable surface layer on the upper part of the base layer, and reserve space above the tee connector; install a protective cover on the top of the tee connector; regularly maintain the first perforated pipe, the second perforated pipe, the tee connector, and the road surface during the operation period; when the permeability of the surface layer has completely decreased, remove the protective cover, install a grate on the top of the tee connector, and continue to maintain the road.

6. A construction method for a buried permeable drainage structure, used in road renovation projects, characterized in that, Includes the following steps: Step 1: Remove the original road surface layer; Step 2: On one side of the road base along the slope direction, according to the size of the rectangular trench of the buried permeable drainage structure, use a diesel road cutter to cut a groove in the original road base. Then, depending on the actual working conditions, use an electric hammer, pneumatic hammer or hydraulic breaker to break up the original road base structure used to install the rectangular trench of the buried permeable drainage structure. Step 3: Based on the existing damage to the curb stones and the actual drainage situation, reinforce, replace, or replace the existing curb stones with horizontal stones; clean the bottom and sides of the rectangular trench and apply a waterproof layer; Step 4: Install the first perforated pipe and the second perforated pipe in the buried permeable drainage structure, and temporarily fix them with steel reinforcement brackets; Install multiple T-joints in the buried permeable drainage structure, connect the first end of the T-joint to one end of the first perforated pipe and the second end to one end of the second perforated pipe; backfill the rectangular trench with permeable concrete and compact it into shape; Step 5: Inspect the existing road base layer, remove any damaged sections, and recast a base layer of a higher grade; use milling machinery to mill the cementitious material layer of the existing road base layer; clean the base layer; fill ordinary cracks, existing construction joints, and existing expansion joints with asphalt mortar and apply crack-resistant tape; apply the bonding layer. Step Six: Construct a permeable surface layer on top of the base layer, leaving space above the tee connector; install a protective cover on top of the tee connector; regularly maintain the first perforated pipe, the second perforated pipe, the tee connector, and the road surface during operation; when the permeability of the surface layer has almost completely decreased, remove the protective cover, install a grate on top of the tee connector, and continue to maintain the road.

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