Fabricated waterproof structure for underground closed space and construction method

Abstract

The invention discloses an assembly type waterproof structure for an underground closed space and a construction method, and relates to the technical field of assembly type constructions.The assembly type waterproof structure comprises a Z-shaped plate, and a prefabricated part A and a prefabricated part B are arranged at the top and the bottom of the Z-shaped plate; structural adhesives are arranged between the Z-shaped plate and the prefabricated part B and between the Z-shaped plate and the prefabricated part A. A water stop steel plate is arranged on the right side of the Z-shaped plate. The structure with the inner wall being a whole steel plate is adopted, reinforcing steel bars and concrete are matched to enable the structure of the component to reach the strength, and the leakage phenomenon of the prefabricated part caused by concrete cracks is completely eradicated; meanwhile, a Z-shaped connection mode is adopted, the smearing width of the structural adhesive is increased, two bends are additionally arranged, the effective waterproof width of the structural adhesive is larger, the possibility of water leakage is reduced to the maximum extent, welding of the water stop steel plates is facilitated, and connection between modules is more stable through the Z-shaped connection structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of prefabricated buildings, and in particular relates to a prefabricated waterproof structure for an underground enclosed space and a construction method. Background Art

[0002] In the engineering construction in recent years, the time cost and environmental protection cost have become increasingly important for the overall cost of construction projects. This is an important reason why prefabricated buildings are becoming more and more common. However, at the same time, the waterproof effect of traditional underground prefabricated structures is far inferior to that of cast-in-place structures, and it is unable to effectively solve the problems of water seepage and leakage. The present invention aims to improve the assembly rate of underground structures and solve the waterproof problem of the entire structure at one time during the construction stage. In traditional technologies, underground prefabricated structures generally use rubber pads at the joints and grouting to seal the structural joints. However, with the long-term erosion of groundwater, the rubber pads will age. At the same time, accompanied by the settlement of buildings and other phenomena, cracks will appear inside the mortar, and due to the uneven attachment surface of the rubber and other reasons, the waterproof structure will fail, resulting in water leakage and seepage. Summary of the invention

[0003] The purpose of the present invention is to provide an assembled waterproof structure and construction method for underground closed spaces, and solve the problems of assembled rapid construction and waterproofing of existing underground closed structures by proposing a steel plate + concrete combined waterproof structural plate.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention relates to an assembled waterproof structure and construction method for an underground closed space, comprising a Z-shaped plate, wherein a prefabricated component A and a prefabricated component B are arranged on the top and bottom of the Z-shaped plate, structural adhesive is arranged between the Z-shaped plate and the prefabricated component B and between the Z-shaped plate and the prefabricated component A, and a waterstop steel plate is arranged on the right side of the Z-shaped plate.

[0005] Furthermore, the left side of the inner wall of the prefabricated component A and the prefabricated component B is provided with prefabricated component transverse steel bars, the left side of the inner wall of the prefabricated component A and the prefabricated component B is provided with prefabricated component vertical steel bars, the right side of the inner wall of the prefabricated component A and the prefabricated component B is provided with studs, the middle part of the left side of the inner wall of the prefabricated component A and the prefabricated component B is provided with studs, the number of the studs is several, and the inner walls of the prefabricated components A and the prefabricated components B are filled with anti-seepage concrete.

[0006] Furthermore, the assembled waterproof structure and construction method for an underground enclosed space include the following steps: Step 1: Material calculation of prefabricated structural modules; Step 2: Graphic design of the overall structure; Step 3: Module division; Step 4: Prefabricated components production; Step 5: Installation of accessories for prefabricated components; Step 6: Installation of components; Step 7: Closed welding of components; Step 8: Construction of the structural top plate and prefabricated components; Step 9: Internal processing.

[0007] Furthermore, in the aforementioned prefabricated waterproof structure and construction method for underground enclosed space, in step 1, the material calculation of the prefabricated structural module is to calculate the material selection according to the project scale information, including: steel plate model, thickness, concrete grade, waterproof performance, bolt material, size; In step two, the plane design of the overall structure is carried out; according to the scale of the project, the overall plane space of the project can be designed as a circular or chamfered square structure. The prefabricated component has a more stable structure when the plane is circular, and the internal space is larger with the same material; if it is square due to the influence of the surrounding environment, other reinforcement measures need to be added to stabilize the structure.

[0008] Furthermore, in the above-mentioned prefabricated waterproof structure and construction method for underground enclosed space, in step three, module division; after the plane design is completed, the module division is carried out, and the division principle is that the length and width do not exceed 6m, and the module division needs to be optimized according to the project characteristics and the marked size of the steel plate, so that the model of the prefabricated component is as single as possible and the steel plate cutting steps are reduced, thereby improving the factory prefabrication efficiency; In step 4, prefabricated components are made; the prefabricated components as a whole use steel plates + studs as the inner wall and waterproof concrete as the outer wall. First, the cut steel plates are welded with studs at a spacing of 200mm*200mm to fix the mixed steel bars and anchor the concrete; then "Z"-shaped steel plates are welded on the opposite sides of the steel plates, and strip steel plates are welded on the other two sides. These four steel plates constitute the four edge sealings of the prefabricated blocks; then the steel bars are tied to improve the overall strength of the prefabricated panels; then the strong and weak electricity pipelines required for the walls are installed; finally, the concrete is poured and maintained as required.

[0009] Furthermore, in the described assembled waterproof structure and construction method for underground enclosed space, in step 5, the accessories of the prefabricated component are installed; first, the lifting lug of the component is installed, and the lifting lug can be set at a place vertical to the side of the strip steel plate, and then a 200mm wide water-stop steel plate is welded on the side of the inner wall steel plate at the "Z"-shaped steel plate, and the full welding is required, and one steel plate can be welded with one water-stop steel plate; at this point, the construction of the prefabricated component is completed; In step six, the components are installed; hoist the components into the reserved grooves of the structural base plate, apply 5mm thick waterproof structural glue in the grooves, and after fixing them, hoist the second component. The "Z"-shaped sides of the two components are coated with 5mm structural glue and squeezed tightly to serve as the first waterproof structure.

[0010] Further, in the described prefabricated waterproof structure and construction method for underground enclosed space, in step seven, the closed welding of the components; after the components are installed, the welded single-sided water-stop steel plate will be tightly attached to the adjacent plate, and foreign matter and rust near the water-stop plate will be removed, and the water-stop plate of the prefabricated component will be welded to the adjacent components to form a layered closed structure. When welding, attention should be paid to flat welding, and welders should work at the same time, from top to bottom, and weld at a uniform speed in the same direction; In step eight, the construction of the structural top plate and prefabricated components; "L"-shaped steel is used as the internal and external edge sealing of the structure, and welding operations are performed to meet the waterproof requirements of the overall structure.

[0011] Furthermore, in the described assembled waterproof structure and construction method for an underground enclosed space, in step nine, after the internal steel plate welding is completed, an elastic flame-retardant non-toxic waterproof coating is brushed on the inside of the warehouse body, and after the elastic waterproof coating is brushed, an ultra-thin non-toxic fire-retardant coating is brushed again.

[0012] The present invention has the following beneficial effects: 1. The present invention is different from the traditional method in that it adopts a structure with an inner wall made of a whole steel plate, and cooperates with steel bars and concrete to make the component structure strong, thus eliminating the leakage of prefabricated components caused by concrete cracks; at the same time, it adopts a "Z"-shaped connection method, which increases the application width of the structural adhesive and adds two bends, so that the effective width of the structural adhesive waterproofing is larger, which minimizes the possibility of leakage and facilitates the welding of the water-stop steel plate. The "Z"-shaped connection structure also makes the connection between modules more stable, especially when the difference between the internal and external pressures is large.

[0013] 2. The present invention innovates from the perspective of assembly, improves the construction efficiency of underground closed structures, realizes prefabrication and factory construction of more than 60% of concrete pouring, and saves construction time. If this method is applied to special facilities such as underground grain depots and underground oil depots, it can better reflect the superiority of this solution in terms of construction period; at the same time, after the final construction of this solution is completed, the inner side of the structural wall is a closed steel plate, which eliminates the possibility of water leakage, greatly reduces the cost of subsequent leakage maintenance, ensures the dryness of the space, and eliminates external pollution of the internal environment; on the whole, this solution solves the problems of "slow construction" and "easy leakage" in underground closed spaces from the aspects of leakage prevention and rapid construction.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of a flow chart of an assembled waterproof structure and a construction method for an underground enclosed space of the present invention; Figure 2 It is a schematic diagram of a half-section structure of the present invention; Figure 3 It is a schematic diagram of the overall right top view of the structure of the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Z-shaped plate; 2. Structural adhesive; 3. Waterstop steel plate; 4. Prefabricated component A; 5. Prefabricated component B; 6. Horizontal reinforcement of prefabricated component; 7. Vertical reinforcement of prefabricated component; 8. Studs; 9. Anti-seepage concrete. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-3 As shown, the present invention is an assembled waterproof structure and construction method for an underground closed space, comprising a Z-shaped plate 1, a Z-shaped plate 1, a prefabricated component A4 and a prefabricated component B5 are arranged on the top and bottom of the Z-shaped plate 1, structural adhesive 2 is arranged between the Z-shaped plate 1 and the prefabricated component B5 and between the Z-shaped plate 1 and the prefabricated component A4, and a water-stop steel plate 3 is arranged on the right side of the Z-shaped plate 1.

[0020] Prefabricated component A4 and prefabricated component B5 are provided with prefabricated component transverse steel bars 6 on the left side of the inner wall, prefabricated component A4 and prefabricated component B5 are provided with prefabricated component vertical steel bars 7 on the left side of the inner wall, prefabricated component A4 and prefabricated component B5 are provided with studs 8 on the right side of the inner wall, prefabricated component A4 and prefabricated component B5 are provided with studs 8 in the middle of the left side of the inner wall, and the number of studs 8 is several. The inner walls of prefabricated components A4 and prefabricated components B5 are filled with anti-seepage concrete 9.

[0021] An assembled waterproof structure and construction method for an underground enclosed space, comprising the following steps: Step 1: Material calculation of prefabricated structural modules; Step 2: Graphic design of the overall structure; Step 3: Module division; Step 4: Prefabricated components production; Step 5: Installation of accessories for prefabricated components; Step 6: Installation of components; Step 7: Closed welding of components; Step 8: Construction of the structural top plate and prefabricated components; Step 9: Internal processing.

[0022] An assembled waterproof structure and construction method for underground enclosed space, in step 1, material calculation of prefabricated structural modules, material selection is calculated according to project scale information, including: steel plate model, thickness, concrete grade, waterproof performance, bolt 8 material, size; In step two, the plane design of the overall structure is carried out; according to the scale of the project, the overall plane space of the project can be designed as a circular or chamfered square structure. The prefabricated component has a more stable structure when the plane is circular, and the internal space is larger with the same material; if it is square due to the influence of the surrounding environment, other reinforcement measures need to be added to stabilize the structure.

[0023] An assembled waterproof structure and construction method for underground enclosed space, in step three, module division; after the plane design is completed, the module division is carried out, and the division principle is that the length and width do not exceed 6m, and the module division needs to be optimized according to the project characteristics and the marked size of the steel plate, so that the model of the prefabricated component is as single as possible and the steel plate cutting steps are reduced, thereby improving the factory prefabrication efficiency; In step 4, prefabricated components are made; the prefabricated components as a whole use steel plates + bolts 8 as the inner wall and waterproof concrete as the outer wall. First, the cut steel plates are welded with bolts 8 at a spacing of 200mm*200mm to fix the mixed steel bars and anchor the concrete; then "Z"-shaped steel plates are welded on the opposite sides of the steel plates, and strip steel plates are welded on the other two sides. These four steel plates constitute the four edge sealings of the prefabricated blocks; then the steel bars are tied to improve the overall strength of the prefabricated panels; then the strong and weak electricity pipelines required for the walls are installed; finally, the concrete is poured and maintained as required.

[0024] An assembled waterproof structure and construction method for underground enclosed space, in step 5, the accessories of the prefabricated component are installed; first, the lifting lug of the component is installed, and the lifting lug can be set at a place vertical to the side of the strip steel plate, and then a 200mm wide water-stop steel plate 3 is welded on the side of the inner wall steel plate at the "Z"-shaped steel plate, and the full welding is required, and one steel plate is welded with one water-stop steel plate 3; at this point, the construction of the prefabricated component is completed; In step six, the components are installed; the components are hoisted into the reserved grooves of the structural base plate, and 5mm thick waterproof structural glue 2 is applied to the grooves. After fixing, the second component is hoisted, and the "Z"-shaped sides of the two components are respectively coated with 5mm structural glue 2 and squeezed tightly to serve as the first waterproof structure.

[0025] An assembled waterproof structure and construction method for underground enclosed space, in step seven, closed welding of components; after the components are installed, the single-sided water-stop steel plate 3 is welded to be close to the adjacent plate, foreign matter and rust near the water-stop plate are removed, and the water-stop plate of the prefabricated component is welded to the adjacent component to form a layered closed structure. When welding, attention should be paid to flat welding, and welders should work at the same time, from top to bottom, and weld at a uniform speed in the same direction; In step eight, the construction of the structural top plate and prefabricated components; "L"-shaped steel is used as the internal and external edge sealing of the structure, and welding operations are performed to meet the waterproof requirements of the overall structure.

[0026] An assembled waterproof structure and construction method for underground enclosed space. In step nine, after the internal steel plate is welded, an elastic flame-retardant non-toxic waterproof coating is applied inside the warehouse body. After the elastic waterproof coating is applied, an ultra-thin non-toxic fire-retardant coating is applied again.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An assembled waterproof structure and construction method for underground enclosed space, characterized in that: The Z-shaped plate (1) comprises a prefabricated component A (4) and a prefabricated component B (5) arranged at the top and bottom of the Z-shaped plate (1), structural adhesive (2) is arranged between the Z-shaped plate (1) and the prefabricated component B (5) and between the Z-shaped plate (1) and the prefabricated component A (4), and a water-stop steel plate (3) is arranged on the right side of the Z-shaped plate (1).

2. The assembled waterproof structure and construction method for underground enclosed space according to claim 1, characterized in that: The left side of the inner wall of the prefabricated component A (4) and the prefabricated component B (5) is provided with a prefabricated component transverse steel bar (6), the left side of the inner wall of the prefabricated component A (4) and the prefabricated component B (5) is provided with a prefabricated component vertical steel bar (7), the right side of the inner wall of the prefabricated component A (4) and the prefabricated component B (5) is provided with a stud (8), the middle part of the left side of the inner wall of the prefabricated component A (4) and the prefabricated component B (5) is provided with a stud (8), the number of the studs (8) is several, and the inner wall of the prefabricated component A (4) and the prefabricated component B (5) is filled with impermeable concrete (9).

3. An assembled waterproof structure and construction method for underground enclosed space according to claims 1-2, characterized in that: The following steps are involved: Step 1: Material calculation of prefabricated structural modules; Step 2: Graphic design of the overall structure; Step 3: Module division; Step 4: Prefabricated components production; Step 5: Installation of accessories for prefabricated components; Step 6: Installation of components; Step 7: Closed welding of components; Step 8: Construction of the structural top plate and prefabricated components; Step 9: Internal processing.

4. The assembled waterproof structure and construction method for underground enclosed space according to claim 3, characterized in that: In step 1, the material calculation of the prefabricated structural module is based on the project scale information to calculate the material selection, including: steel plate model, thickness, concrete grade, waterproof performance, bolt (8) material, size; In step two, the plane design of the overall structure is carried out; according to the scale of the project, the overall plane space of the project can be designed as a circular or chamfered square structure. The prefabricated component has a more stable structure when the plane is circular, and the internal space is larger with the same material; if it is square due to the influence of the surrounding environment, other reinforcement measures need to be added to stabilize the structure.

5. The assembled waterproof structure and construction method for underground enclosed space according to claim 3, characterized in that: In step three, module division: after the plane design is completed, module division is carried out. The division principle is that the length and width should not exceed 6m, and the module division should be optimized according to the project characteristics and the marked size of the steel plate, so that the model of the prefabricated components is as single as possible and the steel plate cutting steps are reduced, thereby improving the prefabrication efficiency of the factory; In step 4, prefabricated components are manufactured; the prefabricated components as a whole adopt the form of steel plate + bolts (8) as the inner wall and waterproof concrete as the outer wall. First, the bolts (8) are welded on the cut steel plate at a spacing of 200mm*200mm to fix the mixed steel bars and anchor the concrete; then, "Z"-shaped steel plates are welded on the opposite sides of the steel plate, and strip steel plates are welded on the other two sides. These four steel plates constitute the four sealing edges of the prefabricated block; then, the steel bars are tied to improve the overall strength of the prefabricated plate; then, the strong and weak electricity pipelines required for the wall are installed; finally, the concrete is poured and maintained as required.

6. The assembled waterproof structure and construction method for underground enclosed space according to claim 3, characterized in that: In step 5, the accessories of the prefabricated component are installed; first, the lifting lugs of the component are installed, and the lifting lugs can be set at a place on the side of the strip steel plate and perpendicular to it, and then a 200mm wide water-stop steel plate (3) is welded on the side of the inner wall steel plate at the "Z"-shaped steel plate. The welding needs to be full, and one steel plate is welded with one water-stop steel plate (3); at this point, the construction of the prefabricated component is completed; In step six, the components are installed; the components are hoisted into the reserved groove of the structural base plate, and a 5 mm thick waterproof structural glue (2) is applied into the groove. After the components are fixed, the second component is hoisted, and the "Z"-shaped sides of the two components are respectively coated with a 5 mm thick structural glue (2) and then squeezed tightly to serve as the first waterproof structure.

7. The assembled waterproof structure and construction method for underground enclosed space according to claim 3, characterized in that: In step seven, the closed welding of the components; after the components are installed, the water stop steel plate (3) on one side is welded to be close to the adjacent plate, foreign matter and rust near the water stop plate are removed, and the water stop plate of this prefabricated component is welded to the adjacent components to form a layered closed structure. When welding, attention should be paid to flat welding, and welders should work at the same time, from top to bottom, and weld at a uniform speed in the same direction; In step eight, the construction of the structural top plate and prefabricated components; "L"-shaped steel is used as the inner and outer edge sealing of the structure, and welding operations are performed to meet the waterproof requirements of the overall structure.

8. The assembled waterproof structure and construction method for underground enclosed space according to claim 3, characterized in that: In step nine, after the internal steel plate welding is completed, the elastic flame-retardant non-toxic waterproof coating is applied to the inside of the warehouse. After the elastic waterproof coating is applied, the ultra-thin non-toxic fire-retardant coating is applied again.

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