Ground frost heaving prevention structure

Abstract

The utility model discloses a ground frost heaving prevention structure, which relates to the technical field of ground construction and comprises a base layer laid on the ground. The waterproof film layer covers the substrate layer; the first geotechnical cloth covers the waterproof film layer; the gravel layer is laid above the first geotechnical cloth; the filling and leveling layers are laid above and below the gravel layer and fill gaps formed by the gravel layer; the first permeable layer is laid above the filling and leveling layer; the second geotechnical cloth covers the first permeable layer; the second permeable layer is laid above the second geotechnical cloth; the permeable ground is laid above the second permeable layer; a supporting assembly and a drainage part are formed on the first permeable layer; water flow sequentially passes through the permeable ground, the second permeable layer, the second geotechnical cloth, the first permeable layer, the filling and leveling layer, the gravel layer, the first geotechnical cloth, the waterproof film layer and the base layer and permeates into the ground. The device is optimized in structure, a multi-layer drainage structure replaces a traditional drainage pipe, ground frost heaving is prevented, a supporting structure is additionally arranged, the structural strength is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of ground construction, in particular to a ground anti-freezing and swelling structure. Background Art

[0002] With the continuous acceleration of urban construction, the original natural vegetation is constantly replaced by buildings and non-permeable hardened ground, changing the natural permeability of natural soil and underlying layers, thus breaking the balance of water and air in nature, which has produced many negative effects. Therefore, permeable ground construction plays a vital role in the urban ecological environment, so permeable pavement is widely used, but at the same time it is also restricted by environmental factors; permeable pavement is susceptible to freeze-thaw conditions in cold areas, which significantly increases its vulnerability, shortens its service life, and limits its scope of use.

[0003] The existing anti-frost heave permeable pavement structure generally adopts the method of pre-buried drainage pipes for ground drainage. The construction is complicated, it is easily affected by frost heave, and there is a lack of corresponding reinforcement structure. The bearing capacity of the land or concrete layer around the drainage pipe will be restricted, and it will gradually lose its use function.

[0004] Therefore, in response to the corresponding problems existing in the above-mentioned permeable pavement structure, a structural optimization is designed. On the basis of controlling and eliminating the ground frost heave problem, a corresponding reinforced support structure is added to improve the structural strength, reduce the frequency of daily management and maintenance, and extend the service life of the structure to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a ground anti-freezing and heaving structure with an optimized structure, a ground drainage system, and a corresponding reinforced support structure to improve the structural strength and extend the service life.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] Ground anti-frost heaving structure, including:

[0008] A base layer, the base layer being laid on the ground;

[0009] A water-proof film layer, wherein the water-proof film layer covers the base layer;

[0010] a first geotextile, wherein the first geotextile covers the waterproof film layer;

[0011] A gravel layer, the gravel layer being laid on top of the first geotextile;

[0012] A filling layer, which is laid above and below the gravel layer and fills the gaps formed by the gravel layer;

[0013] a first permeable layer, wherein the first permeable layer is laid on the filling layer above the gravel layer;

[0014] a second geotextile, wherein the second geotextile covers the first permeable layer;

[0015] A second water-permeable layer, wherein the second water-permeable layer is laid on the second geotextile;

[0016] A permeable ground, wherein the permeable ground is laid on the second permeable layer;

[0017] The first water-permeable layer is formed with a support assembly and a drainage portion;

[0018] The water flows sequentially through the permeable ground, the second permeable layer, the second geotextile, the first permeable layer, the filling layer, the gravel layer, the first geotextile, the waterproof film layer, the base layer and penetrates into the ground.

[0019] Further, the support assembly has a support frame;

[0020] The support frames are spaced to form a plurality of grids;

[0021] The inner circumference of the grid is equipped with rubber blocks;

[0022] A grid plate is installed inside the grid.

[0023] Furthermore, the drainage part has a drainage groove and a water-permeable net;

[0024] The drainage grooves are provided on the support frame and are located between adjacent grids;

[0025] The permeable net is installed at the bottom of the grid.

[0026] Furthermore, a cross steel bar frame is installed inside the support frame.

[0027] Furthermore, the base layer is formed by compacting rammed earth;

[0028] The filling layer is made of coarse sand and fine sand;

[0029] The first permeable layer and the second permeable layer are made of medium-grained permeable asphalt concrete;

[0030] The permeable ground is made of artificial turf or plastic.

[0031] In the above technical solution, the ground anti-freezing and heaving structure of the utility model has the following beneficial effects:

[0032] The device has an optimized structure, and a multi-layer drainage structure replaces the traditional drainage pipe. It has a simple structure and is easy to lay. On the basis of controlling and eliminating the problem of ground frost heave, a corresponding reinforced support structure is added to improve the structural strength and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0034] Figure 1 A schematic diagram of the structure of the ground anti-freezing and heaving structure provided by an embodiment of the utility model;

[0035] Figure 2 A schematic diagram of a partial structure of a ground anti-freezing and heaving structure provided by an embodiment of the utility model;

[0036] Figure 3 A schematic diagram of the partial structure of the ground anti-freezing and heaving structure provided in an embodiment of the utility model.

[0037] Description of reference numerals:

[0038] 10. Base layer; 11. Waterproof film layer; 12. First geotextile; 13. Gravel layer; 14. Filling layer; 15. First permeable layer; 16. Second geotextile; 17. Second permeable layer; 18. Permeable ground surface;

[0039] 151. Support assembly; 152. Drainage part; 153. Support frame; 154. Grid; 155. Rubber block; 156. Grille plate; 157. Drain trough; 158. Permeable net; 159. Cross steel frame. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] It should be noted that the terms "above", "below", "bottom", etc. used in this article indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description. Similar expressions are only for the purpose of explanation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] See also Figure 1-Figure 3 As shown;

[0043] Ground anti-frost heaving structure, including:

[0044] A base layer 10, the base layer is laid on the ground;

[0045] A water-proof film layer 11, wherein the water-proof film layer 11 covers the base layer 10;

[0046] A first geotextile 12, the first geotextile 12 covers the waterproof film layer 11;

[0047] A gravel layer 13, wherein the gravel layer 13 is laid on the first geotextile 12;

[0048] A filling layer 14, which is laid above and below the gravel layer 13 and fills the gaps formed by the gravel layer 13;

[0049] A first permeable layer 15, the first permeable layer 15 is laid on the filling layer 14 located above the gravel layer 13;

[0050] A second geotextile 16, the second geotextile 16 covers the first water-permeable layer 15;

[0051] A second water-permeable layer 17, the second water-permeable layer 17 is laid on the second geotextile 16;

[0052] A permeable ground surface 18, the permeable ground surface 18 is laid on the second permeable layer 17;

[0053] The first water-permeable layer 15 is formed with a support assembly 151 and a drainage portion 152;

[0054] The water flows sequentially through the permeable ground 18, the second permeable layer 17, the second geotextile 16, the first permeable layer 15, the filling layer 14, the gravel layer 13, the first geotextile 12, the waterproof film layer 11, the base layer 10 and penetrates into the ground.

[0055] The support assembly 151 has a support frame 153;

[0056] The support frame 153 is spaced to form a plurality of grids 154;

[0057] A rubber block 155 is installed on the inner circumference of the grid 154;

[0058] A grid plate 156 is installed inside the grid 154 .

[0059] The drainage portion 152 has a drainage groove 157 and a water-permeable net 158;

[0060] The drainage groove 157 is provided on the support frame 153 and is located between adjacent grids 154;

[0061] A water-permeable net 158 ​​is installed at the bottom of the grid 154 .

[0062] A cross steel bar frame 159 is installed inside the support frame 153.

[0063] The base layer 10 is formed by compacting the cement mortar;

[0064] The filling layer 14 is made of coarse sand and fine sand;

[0065] The first permeable layer 15 and the second permeable layer 17 are made of medium-grained permeable asphalt concrete;

[0066] The permeable ground 18 is made of artificial turf or plastic.

[0067] Specifically, the ground anti-freezing heave structure is sequentially laid with a permeable ground 18, a second permeable layer 17, a second geotextile 16, a first permeable layer 15, a filling layer 14, a gravel layer 13, a first geotextile 12, a waterproof film layer 11, and a base layer 10 from top to bottom, wherein the base layer 10 is in contact with the ground, the base layer 10 uses cement as a base, and can be laid with ash soil or cement-like earthwork and then compacted, a waterproof film layer 11 is laid on the base layer 10, and the waterproof film layer 11 can use a high-density polyethylene geomembrane, which can block part of the water flow and prevent the base layer 10 from being overly washed and soaked, and a first geotextile 12 is covered on the waterproof film layer 11, and the geotextile is corrosion-resistant, high-strength, and permeable, and a gravel layer 13 is laid on the first geotextile 12 After the gravel is laid, a filling layer 14 is laid above and below it. The filling layer 14 located on the upper layer of the gravel layer 13 is made of coarse sand, and the filling layer 14 located below the gravel layer 13 is made of fine sand. During the laying process, part of the coarse sand will fall into the gravel layer 13 to fill the gaps between the gravels and slow down the infiltration speed of the water flow. A first permeable layer 15 is laid above the filling layer 14 at the upper end of the gravel layer 13. The first permeable layer 15 is covered with a second geotextile 16. A second permeable layer 17 is laid above the second geotextile 16. The second permeable layer 17 is made of medium-grained permeable asphalt concrete and is mixed with antifreeze. The medium-grained permeable asphalt concrete has good permeability and high stability. A permeable ground 18 is laid above the second permeable layer 17, and the permeable ground 18 is decorated with permeable artificial turf or plastic;

[0068] The first water-permeable layer 15 is provided with a support assembly 151 and a drainage part 152. The support assembly 151 plays a supporting role, increases the overall structural strength, and makes the structure more stable and durable. The drainage part 152 is used for drainage. The support assembly 151 has a support frame 153. The support frame 153 is made of medium-grained water-permeable asphalt concrete and is mixed with antifreeze. A plurality of grids 154 are provided on the support frame 153, and rubber blocks 15 are arranged around the grids 154. The rubber blocks 15 can be deformed to The rubber block 15 has strong strength, can absorb water and expand and deform due to freezing, and prevent the structure from being damaged by freezing. A grid plate 156 is installed between the rubber blocks 15. The grid plate 156 divides the position between the grids 154 into multiple groups of small grids, which can not only play a supporting role, but also slow down the infiltration of water. The bottom of the grid plate 156 is a permeable net 158. A drainage groove 157 is opened between adjacent grids 154. The permeable net 158 ​​and the drainage groove 157 are used for drainage, that is, the permeable net 158 ​​and the drainage groove 157 form a drainage part 152;

[0069] Furthermore, a cross steel frame 159 is installed inside the support frame 153. The structure formed by welding the cross steel frame 159 can play a better supporting role, improve the load-bearing capacity, and enhance the structural strength.

[0070] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. The ground anti-freezing structure is characterized by: include: A base layer (10), the base layer being laid on the ground; A water-proof film layer (11), wherein the water-proof film layer (11) covers the base layer (10); A first geotextile (12), wherein the first geotextile (12) covers the waterproof film layer (11); A gravel layer (13), wherein the gravel layer (13) is laid on top of the first geotextile (12); A filling layer (14), wherein the filling layer (14) is laid above and below the gravel layer (13) and fills the gaps formed by the gravel layer (13); A first water-permeable layer (15), wherein the first water-permeable layer (15) is laid on the filling layer (14) located above the gravel layer (13); A second geotextile (16), wherein the second geotextile (16) covers the first water-permeable layer (15); A second water-permeable layer (17), wherein the second water-permeable layer (17) is laid on top of the second geotextile (16); A permeable ground surface (18), wherein the permeable ground surface (18) is laid on top of the second permeable layer (17); The first water-permeable layer (15) is formed with a support assembly (151) and a drainage portion (152); The water flows sequentially through the permeable ground surface (18), the second permeable layer (17), the second geotextile (16), the first permeable layer (15), the filling layer (14), the gravel layer (13), the first geotextile (12), the waterproof film layer (11), the base layer (10), and penetrates into the ground surface.

2. The ground anti-freezing and heaving structure according to claim 1, characterized in that: The support assembly (151) comprises a support frame (153); The support frame (153) is spaced to form a plurality of grids (154); A rubber block (155) is installed on the inner circumference of the grid (154); A grid plate (156) is installed inside the grid (154).

3. The ground anti-freezing and heaving structure according to claim 2 is characterized in that: The drainage portion (152) comprises a drainage groove (157) and a water-permeable net (158); The drainage groove (157) is provided on the support frame (153) and is located between adjacent grids (154); The water-permeable net (158) is installed at the bottom of the grid (154).

4. The ground anti-freezing and heaving structure according to claim 3 is characterized in that: A cross steel bar frame (159) is installed inside the support frame (153).

5. The ground anti-freezing and heaving structure according to claim 1 is characterized in that: The base layer (10) is formed by compacting cement mortar; The filling layer (14) is made of coarse sand and fine sand; The first water-permeable layer (15) and the second water-permeable layer (17) are made of medium-grained water-permeable asphalt concrete; The permeable ground (18) is made of artificial turf or plastic.

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