Construction foundation drainage cushion layer structure
By using two drainage structural layers in the construction foundation drainage cushion structure, the drainage capacity is strengthened by using three-layer gravel structures and isolation layers, the problems of capillary rise and uneven settlement are solved, and more efficient drainage and a more stable structure are achieved.
Patent Information
- Application Number
- CN202422266713.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The existing construction foundation drainage cushion structure cannot effectively prevent capillary water from rising and increasing transverse drainage, resulting in uneven settlement.
The design of two drainage structural layers is adopted, including the main drainage layer consisting of three layers of gravel structures, with isolation layers and fiber grilles arranged between them to enhance drainage capacity and integrity.
Effectively prevent capillary water from rising, increase transverse drainage, improve the integrity of the drainage cushion layer, reduce uneven settlement, and improve service life.
Smart Images
Figure CN223003377U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, and particularly relates to a drainage cushion structure for a construction foundation Background Technique
[0002] The foundation cushion is a structural layer between the base course and the subgrade. When the water stability of the subgrade is poor, it is used to improve the water stability of the subgrade, enhance the water stability and frost heaving resistance of the pavement structure, and can also disperse the load to reduce the deformation of the subgrade. Therefore, it is usually set when the humidity and temperature conditions of the subgrade are poor. The strength requirement of the cushion material does not necessarily have to be high, but its water stability must be good
[0003] The existing drainage cushion structure for a construction foundation cannot adopt two drainage structure layers to further prevent the capillary water from rising continuously and increase the lateral drainage volume, and cannot enhance the integrity of the drainage cushion, making it prone to uneven settlement Content of the Utility Model
[0004] Aiming at the problems in the prior art, the utility model provides a drainage cushion structure for a construction foundation. The drainage cushion structure for a construction foundation adopts two drainage structure layers to further prevent the capillary water from rising continuously, increase the lateral drainage volume, enhance the integrity of the drainage cushion, and reduce uneven settlement
[0005] The technical solution adopted by the utility model to solve its technical problems is a drainage cushion structure for a construction foundation, which includes a main drainage layer, a coarse sand layer, a slag base course, a caulking layer and a sealing layer. The main drainage layer is composed of a first gravel layer, a second gravel layer and a third gravel layer. The first gravel layer is laid on the top of the second gravel layer, and the third gravel layer is laid on the bottom of the second gravel layer. Isolation layers are laid between the second gravel layer and the first gravel layer and the third gravel layer
[0006] A caulking layer is arranged on the top of the main drainage layer. A first fiber grid is arranged between the caulking layer and the sealing layer. A coarse sand layer is laid on the bottom of the main drainage layer, and a second fiber grid is arranged between the coarse sand layer and the main drainage layer. A slag base course is laid on the bottom of the coarse sand layer
[0007] By adopting the above technical solution, the drainage cushion structure for a construction foundation adopts two drainage structure layers to further prevent the capillary water from rising continuously, increase the lateral drainage volume, enhance the integrity of the drainage cushion, and reduce uneven settlement
[0008] Specifically, the outer surfaces of the first fiber grid and the second fiber grid are both coated with a curing layer, and the curing layer is specifically made of PU material
[0009] By adopting the above technical solution, since the solidified layer is made of PU material specifically, the first fiber grille and the second fiber grille have excellent wear resistance and repeated flexing performance, good tear strength, and excellent resistance to oil, acid, alkali and low temperature, thus improving the service life.
[0010] Specifically, a sealing layer is laid on the top of the caulking layer, and the sealing layer is a cement soil layer specifically.
[0011] Specifically, the isolation layer is a permeable geotextile specifically.
[0012] By adopting the above technical solution, the isolation layer between the gravel layers has good water permeability, improves the integrity of each layer of gravel without affecting the lateral drainage, and improves the bearing capacity of the foundation and reduces uneven settlement.
[0013] Specifically, the caulking layer is a stone powder material layer specifically.
[0014] The beneficial effects of the present utility model:
[0015] (1) For the construction foundation drainage cushion structure of the present utility model, when building this drainage cushion structure on the foundation, first use the slag base course for leveling to provide a flat base surface, and use the slag base course and the coarse sand layer to facilitate the lateral drainage of a small amount of groundwater, prevent the capillary water from rising further, and use the main drainage layer designed with a three-layer gravel structure to serve as a further defense line to further prevent the capillary water from rising further, increase the lateral drainage volume, and use the isolation layer between the gravel layers to have good water permeability, improve the integrity of each layer of gravel without affecting the lateral drainage, and improve the bearing capacity of the foundation and reduce uneven settlement.
[0016] (2) For the construction foundation drainage cushion structure of the present utility model, use the caulking layer to compact the gravel on the top of the main drainage layer, use the first fiber grille and the second fiber grille to increase the slab property of the overall drainage cushion, which is not easily damaged by water, and since the solidified layer is made of PU material specifically, the first fiber grille and the second fiber grille have excellent wear resistance and repeated flexing performance, good tear strength, and excellent resistance to oil, acid, alkali and low temperature, thus improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present utility model will be further described below in conjunction with the drawings and embodiments.
[0018] Figure 1 is the overall structural schematic diagram of the present utility model;
[0019] Figure 2 is the structural schematic diagram of the main drainage layer of the present utility model;
[0020] Figure 3Schematic diagram of the outer surface layer structure of the first fiber grille of the present utility model;
[0021] Figure 4 Schematic diagram of the outer surface layer structure of the second fiber grille of the present utility model.
[0022] In the figure: 1, capping layer; 2, first fiber grille; 3, caulking layer; 4, main drainage layer; 5, second fiber grille; 6, coarse sand layer; 7, slag subbase; 8, first gravel layer; 9, second gravel layer; 10, third gravel layer; 11, isolation layer; 12, curing layer. Detailed implementation manners
[0023] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with the detailed implementation manners.
[0024] For the construction of the foundation drainage cushion structure, two drainage structure layers are adopted to further prevent the capillary water from rising continuously, increase the lateral drainage volume, and enhance the integrity of the drainage cushion, reducing uneven settlement. As Figures 1-4 shown, a construction foundation drainage cushion structure of the present utility model includes a main drainage layer 4, a coarse sand layer 6, a slag subbase 7, a caulking layer 3 and a capping layer 1. The main drainage layer 4 is composed of a first gravel layer 8, a second gravel layer 9 and a third gravel layer 10. The first gravel layer 8 is laid on the top of the second gravel layer 9 and the third gravel layer 10 is laid on the bottom of the second gravel layer 9. An isolation layer 11 is laid between the second gravel layer 9 and the first gravel layer 8 and the third gravel layer 10;
[0025] A caulking layer 3 is arranged on the top of the main drainage layer 4. A first fiber grille 2 is arranged between the caulking layer 3 and the capping layer 1. A coarse sand layer 6 is laid on the bottom of the main drainage layer 4 and a second fiber grille 5 is arranged between the coarse sand layer 6 and the main drainage layer 4. A slag subbase 7 is laid on the bottom of the coarse sand layer 6.
[0026] During use, the construction foundation drainage cushion structure adopts two drainage structure layers to further prevent the capillary water from rising continuously, increase the lateral drainage volume, and enhance the integrity of the drainage cushion, reducing uneven settlement.
[0027] Exemplarily, as Figure 3 、 4 shown, the present utility model further includes that the outer surface layers of the first fiber grille 2 and the second fiber grille 5 are both coated with a curing layer 12, and the curing layer 12 is specifically made of PU material.
[0028] During use, the curing layer 12 is made of PU material specifically, enabling the first fiber grid 2 and the second fiber grid 5 to have excellent wear resistance and repeated flexing performance, good tear resistance, and excellent oil, acid, alkali, and low-temperature resistance, thereby extending the service life.
[0029] Exemplarily, as Figure 1 shown, the present invention further includes that a sealing layer 1 is laid on the top of the caulking layer 3, and the sealing layer 1 is specifically a cement soil layer.
[0030] During use, the cement soil layer has a certain strength and stiffness, blocks groundwater, and bears the upper structure.
[0031] Exemplarily, as Figure 2 shown, the present invention further includes that the isolation layer 11 is specifically a permeable geotextile.
[0032] During use, due to the good water permeability of the isolation layer 11 between the gravel layers, the integrity of each layer of gravel is improved without affecting the lateral drainage, and the bearing capacity of the foundation is increased, reducing uneven settlement.
[0033] Exemplarily, as Figure 1 shown, the present invention further includes that the caulking layer 3 is specifically a stone powder material layer.
[0034] During use, the caulking layer 3 has an effect of compacting and densifying the gravel at the top of the main drainage layer 4.
[0035] When the present invention is in use and the drainage cushion structure is built on the foundation, first, the slag subbase layer 7 is used for leveling to provide a flat base surface, and the slag subbase layer 7 and the coarse sand layer 6 are used to facilitate the lateral drainage of a small amount of groundwater and prevent capillary water from rising further;
[0036] The main drainage layer 4 is designed with a three-layer gravel structure, which is convenient as a subsequent defense line to further prevent capillary water from rising further, increase the lateral drainage volume. Due to the good water permeability of the isolation layer 11 between the gravel layers, the integrity of each layer of gravel is improved without affecting the lateral drainage, and the bearing capacity of the foundation is increased, reducing uneven settlement;
[0037] The caulking layer 3 has an effect of compacting and densifying the gravel at the top of the main drainage layer 4. The first fiber grid 2 and the second fiber grid 5 are used to increase the slab property of the overall drainage cushion, making it not easily damaged by water. The curing layer 12 is made of PU material specifically, enabling the first fiber grid 2 and the second fiber grid 5 to have excellent wear resistance and repeated flexing performance, good tear resistance, and excellent oil, acid, alkali, and low-temperature resistance, thereby extending the service life.
[0038] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A construction foundation drainage cushion structure, characterized in that: The invention comprises a main drainage layer (4), a coarse sand layer (6), a slag subbase layer (7), a caulking layer (3) and a capping layer (1); the main drainage layer (4) is composed of a first crushed stone layer (8), a second crushed stone layer (9) and a third crushed stone layer (10); the first crushed stone layer (8) is laid on the top of the second crushed stone layer (9) and the third crushed stone layer (10) is laid on the bottom of the second crushed stone layer (9); and an isolation layer (11) is laid between the second crushed stone layer (9) and the first crushed stone layer (8) and the third crushed stone layer (10); A caulking layer (3) is arranged on the top of the main drainage layer (4), a first fiber grid (2) is arranged between the caulking layer (3) and the capping layer (1), a coarse sand layer (6) is laid on the bottom of the main drainage layer (4), a second fiber grid (5) is arranged between the coarse sand layer (6) and the main drainage layer (4), and a slag base layer (7) is laid on the bottom of the coarse sand layer (6).
2. A construction foundation drainage cushion structure according to claim 1, characterized in that: The outer surfaces of the first fiber grid (2) and the second fiber grid (5) are both coated with a solidified layer (12), and the solidified layer (12) is specifically made of PU material.
3. A construction foundation drainage cushion structure according to claim 1, characterized in that: A sealing top layer (1) is laid on the top of the caulking layer (3), and the sealing top layer (1) is specifically a cement soil layer.
4. A construction foundation drainage cushion structure according to claim 1, characterized in that: The isolation layer (11) is specifically a permeable geotextile.
5. A construction foundation drainage cushion structure according to claim 1, characterized in that: The caulking layer (3) is specifically a stone powder material layer.