Concrete slurry leakage prevention construction device and method for civil air defense engineering

Abstract

The invention provides a concrete slurry leakage prevention construction device and method for civil air defense engineering, and relates to the technical field of concrete construction. The civil air defense engineering concrete slurry leakage prevention construction device comprises a prefabricated assembly and a pressure applying assembly, the prefabricated assembly comprises a leakage prevention frame, the cross section of the leakage prevention frame is in a U shape, the side, away from an opening, of the leakage prevention frame is fixedly connected with a plurality of embedded frames, and stress parts are symmetrically arranged on the inner side of the leakage prevention frame; a prefabricated width is reserved between the two stress pieces; the pressure applying assembly is arranged in the prefabricated assembly, horizontal outward thrust can be applied to the leakage-proof frame through the two stress pieces, and the pressure applying assembly comprises a pressure applying shell. By arranging the pressure applying assembly and the prefabricating assembly, horizontal pressure can be evenly applied to the inner wall of the formwork through mutual cooperation of the pressure applying assembly and the prefabricating assembly, concrete leakage is avoided, the concrete pouring cost is saved, and pouring is easy.

Description

Technical Field

[0001] The invention relates to the technical field of concrete construction, and in particular to a device and method for preventing concrete slurry leakage in civil air defense projects. Background Art

[0002] With the construction of urbanization, the development and utilization of underground space has gradually increased. When constructing underground buildings, the ground is first excavated into a foundation pit, and a casting space is formed in the foundation pit using formwork. A steel cage is placed in the casting space, and then concrete is poured into the casting space. For underground continuous building walls, usually after one section of the wall is completed, the next section of the wall will be constructed. However, when one section of the wall is being constructed, concrete is easy to flow out from the gap between the steel cage and the casting space, thereby affecting the quality of the building wall.

[0003] In the related art, there is a slurry leakage prevention device for underground continuous wall construction with announcement number: CN220013777U, which includes a top plate, a side plate, a bottom plate and a thin steel plate, wherein the side plate is arranged in the middle of the top plate and the bottom plate, and the top plate, the side plate and the bottom plate are arranged in an H-shaped structure, and the thin steel plate includes a first thin steel plate and a second thin steel plate, one side of the first thin steel plate is connected to the left flange of the top plate, and one side of the second thin steel plate is connected to the left flange of the bottom plate, the first thin steel plate and the second thin steel plate are of the same size, the tops of the first thin steel plate and the second thin steel plate are both in the same height as the top ends of the top plate and the bottom plate, and the bottoms of the first thin steel plate and the second thin steel plate are lower than the bottom end height of the top plate and the bottom plate.

[0004] Although this patent can exert pressure on the groove wall by adding concrete, the pressure provided by the concrete's own gravity is small. When the concrete filling amount is small, only the groove wall at the bottom can be subjected to pressure. When concrete is added from top to bottom, the concrete is easy to leak from the upper groove wall that is not subjected to pressure, thereby causing waste of concrete and making it more difficult to pour concrete. Summary of the invention

[0005] 1. Technical issues to be resolved In view of the shortcomings of the prior art, the present invention provides a concrete leakage prevention construction device and method for civil air defense projects, which solves the problems in the prior art that concrete needs to be poured to apply pressure on the groove wall, the concrete pouring space has poor sealing, resulting in waste of concrete, and the difficulty in pouring concrete.

[0006] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: a construction device for preventing concrete slurry leakage in civil air defense projects, comprising: A prefabricated component, wherein the prefabricated component comprises a leakproof frame, wherein the cross-sectional shape of the leakproof frame is U-shaped, wherein a plurality of embedded frames are fixedly connected to a side of the leakproof frame away from the opening, wherein force-bearing members are symmetrically arranged on the inner side of the leakproof frame, and a prefabricated width is reserved between two of the force-bearing members; A pressure component is arranged inside the prefabricated component, and can apply a horizontal outward thrust to the leak-proof frame through two force-bearing members. The pressure component includes a pressure shell, a pressure chamber is arranged inside the pressure shell, a pressure column is fixedly connected to the middle of the pressure shell, and connecting holes are evenly arranged on the pressure column. The lower part of the pressure column is symmetrically provided with a gradual slope, and the cross section of the gradual slope gradually increases from bottom to top. By setting up the pressure component and the prefabricated component, and utilizing the mutual cooperation of the pressure component and the prefabricated component, horizontal pressure can be evenly applied to the inner wall of the formwork, thereby avoiding concrete leakage, saving the cost of pouring concrete, and making pouring simple; and under the action of the connecting holes and the X-support members, it is convenient for concrete to circulate and increase the space for placing steel bars, thereby improving the connection strength of adjacent walls, and the overall structure is simple and the manufacturing cost is low.

[0007] Preferably, an X-support is fixedly connected inside the embedded frame, a steel bar accommodating cavity is provided inside the embedded frame, an elastic pad is fixedly connected to the outer side of the leakage-proof frame, and the total width of the leakage-proof frame and the two elastic pads is the same as the width of the wall.

[0008] Preferably, the stress-bearing member includes a short side plate, a long side plate and a stress-bearing strip fixed as one, the short side plate and the long side plate are both fixedly connected to the leak-proof frame, the length of the short side plate is smaller than the long side plate, and the width of the leak-proof frame is larger than the width of the embedded frame. When the stress-bearing strip is subjected to horizontal pressure, the horizontal pressure can be transmitted to the leak-proof frame through the short side plate and the long side plate, so that the elastic pad is in full contact with the template to play a sealing role, and the short side plate can provide support for the long side plate, so that the stress-bearing strip can withstand greater pressure without damage, thereby improving the overall durability.

[0009] Preferably, the width of the upper cross section of the pressure column is the pressure width, and the pressure width is greater than the prefabrication width.

[0010] The present invention also provides a method for preventing concrete slurry from leaking in civil air defense projects, which uses the above-mentioned concrete slurry prevention construction device for civil air defense projects, and comprises the following steps: Step 1: In the excavated foundation pit, use formwork and prefabricated components to surround the original pouring space according to the designed dimensions; Step 2: Place the pressure component from top to bottom in the prefabricated component in step 1, pressurize and seal the casting space, insert the steel cage, and then pour concrete into the original casting space after pressure sealing to form the original wall; Step 3: Based on the prefabricated components and pressure components on the original wall, use new prefabricated components and templates to surround the target casting space; Step 4: Place a new pressure component from top to bottom into the new prefabricated component in step 3, pressure-seal the target casting space, insert a steel cage, and then pour concrete into the pressure-sealed target casting space and the pressure shell connected to the original wall to form the target wall.

[0011] Preferably, the pressure seal is specifically to use the gradual slope to push the force-bearing members on both sides horizontally outward, thereby driving the leak-proof frame to move synchronously, so that the prefabricated component is tightly fitted with the template.

[0012] Preferably, the inserting of the steel cage is specifically to vertically pass a plurality of steel bars through the center of the embedded frame, and connect the plurality of steel bars with the steel bars on the outside of the embedded frame by bundling or welding to form the steel cage.

[0013] Preferably, the method further includes step five: the poured concrete in the pressure shell connected to the original wall flows through the connecting hole and is connected to the target wall as a whole.

[0014] (III) Beneficial effects The present invention provides a device and method for preventing concrete slurry leakage in civil air defense projects. It has the following beneficial effects: The present invention can uniformly apply horizontal pressure to the inner wall of the template by setting up a pressure component and a prefabricated component, utilizing the cooperation between the pressure component and the prefabricated component, thereby avoiding concrete leakage, saving the cost of pouring concrete, and simplifying pouring; and under the action of the connecting holes and the X-support members, it is convenient for concrete to flow and increase the placement space of steel bars, thereby improving the connection strength of adjacent walls, and the overall structure is simple and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the disassembled state of the present invention; Figure 2 A three-dimensional diagram of a pressure-applying assembly of the present invention; Figure 3 A perspective view of a prefabricated assembly of the present invention; Figure 4 A top view of the pressure-applying assembly of the present invention; Figure 5 A top view of a prefabricated component of the present invention; Figure 6 It is a structural schematic diagram of the force-bearing member of the present invention; Figure 7 A three-dimensional diagram of the construction state of the present invention; Figure 8 It is a top view of the construction state of the present invention.

[0016] Among them, 1. pressure component; 101. pressure shell; 102. pressure chamber; 103. pressure column; 104. connecting hole; 105. gradual slope; 2. prefabricated component; 201. embedded frame; 202. elastic pad; 203. load-bearing member; 2031. short side plate; 2032. long side plate; 2033. load-bearing strip; 204. leak-proof frame; 205. X support member; 206. steel bar accommodating cavity; 61. prefabricated width; 62. pressure width; 3. original wall; 4. target wall; 5. template. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figure 1-Figure 8 As shown, an embodiment of the present invention provides a concrete slurry leakage prevention construction device for civil air defense engineering, comprising: Prefabricated component 2, comprising a leakproof frame 204, the cross-section of which is U-shaped, a plurality of embedded frames 201 being fixedly connected to one side of the leakproof frame 204 away from the opening, a force-bearing member 203 being symmetrically arranged on the inner side of the leakproof frame 204, and a prefabricated width 61 being reserved between two force-bearing members 203; refer to Figure 1 , Figure 3 , Figure 5 The leak-proof frame 204 can cooperate with the template 5 to form a good sealed space. The force-bearing member 203 can expand the pressure area of ​​the horizontal pressure and improve the leak-proof effect. The embedded frame 201 is used to connect the wall to improve the connection strength of the adjacent walls.

[0019] An X-support member 205 is fixedly connected in the embedded frame 201, a steel bar receiving cavity 206 is provided in the embedded frame 201, an elastic pad 202 is fixedly connected to the outer side of the leakproof frame 204, and the total width of the leakproof frame 204 and the two elastic pads 202 is the same as the width of the wall; refer to Figure 5 The X-support member 205 can provide support for the embedded frame 201, increase the contact area between the concrete and the embedded frame 201, and improve the connection strength. The steel bar accommodating cavity 206 is used for the steel bar to pass through, which is convenient for the placement of the steel bar.

[0020] The force bearing member 203 includes a short side plate 2031, a long side plate 2032 and a force bearing bar 2033 fixed as one body, the short side plate 2031 and the long side plate 2032 are fixedly connected to the leakage prevention frame 204, the length of the short side plate 2031 is smaller than the long side plate 2032, and the width of the leakage prevention frame 204 is larger than the width of the embedded frame 201; refer to Figure 6 When the stress-bearing strip 2033 is subjected to horizontal pressure, the horizontal pressure can be transmitted to the leak-proof frame 204 through the short side plate 2031 and the long side plate 2032, so that the elastic pad 202 is in full contact with the template 5 to play a sealing role. At the same time, the short side plate 2031 can provide support for the long side plate 2032, so that the stress-bearing strip 2033 can withstand greater pressure without damage, thereby improving the overall durability.

[0021] A pressure component 1 is arranged inside the prefabricated component 2, and can apply a horizontal outward thrust to the leak-proof frame 204 through two force-bearing members 203. The pressure component 1 includes a pressure shell 101, a pressure chamber 102 is arranged inside the pressure shell 101, a pressure column 103 is fixedly connected to the middle of the pressure shell 101, the width of the upper cross section of the pressure column 103 is a pressure width 62, and the pressure width 62 is greater than the prefabricated width 61. The pressure column 103 is evenly provided with connecting holes 104, and the lower part of the pressure column 103 is symmetrically provided with a gradual slope 105, and the cross section of the gradual slope 105 is gradually enlarged from bottom to top; refer to Figure 2 , Figure 4 During the pressure operation, the pressure component 1 is placed from top to bottom. Since the cross section of the gradually inclined portion 105 gradually increases from bottom to top, the force-bearing strip 2033 will be gradually pushed, and a horizontal outward thrust will be applied to the force-bearing strip 2033, thereby exerting a pressure effect. Moreover, since the pressure column 103 is the same height as the prefabricated component 2 as a whole, uniform pressure can be formed at various positions. Compared with the traditional single-point position pressure, it has the characteristics of uniform pressure, stable force, and durable structure. At the same time, it takes into account the reduction of construction costs, the construction costs of the lock enterprise, and increases the enterprise profit margin; Concrete can be poured in the pressure chamber 102. Due to the fluidity of concrete, the concrete can flow through the connecting hole 104 and connect with the target wall 4 as a whole, thereby fixing the pressure component 1, so that the pressure component 1, the prefabricated component 2 and the target wall 4 are fixed as a whole, playing a role of double pressure and fixation, and improving the strength of the wall. The inclined side surface of the filling support pressure shell 101 can provide support for the long side plate 2032, thereby increasing the supporting surface provided by the pressure component 1, which not only ensures good sealing, but also avoids damage to a single position of the stress-bearing bar 2033 due to excessive force, thereby extending the overall service life of the stress-bearing member 203.

[0022] refer to Figure 7 , Figure 8 The embodiment of the present invention also provides a method for preventing leakage of concrete slurry in civil air defense projects, which uses the above-mentioned device for preventing leakage of concrete slurry in civil air defense projects, and includes the following steps: Step 1: In the excavated foundation pit, the template 5 and prefabricated components 2 are used to surround the original casting space according to the designed size; the template 5 and prefabricated components 2 can initially form the original casting space.

[0023] Step 2: Place the pressure component 1 from top to bottom in the prefabricated component 2 in step 1, pressure-seal the casting space, insert the steel cage, and then pour concrete into the original casting space after pressure sealing to form the original wall 3; the pressure sealing is specifically to use the gradual slope 105 to push the force-bearing members 203 on both sides horizontally outward, thereby driving the leak-proof frame 204 to move synchronously, so that the prefabricated component 2 and the template 5 are closely fitted; inserting the steel cage is specifically to vertically and centrally pass multiple steel bars through the embedded frame 201, and connect the multiple steel bars with the steel bars on the outside of the embedded frame 201 by bundling or welding to form a steel cage; Step 3: Based on the prefabricated components 2 and the pressure components 1 on the original wall 3, new prefabricated components 2 and templates 5 are used to surround the target casting space; Step 4: In the new prefabricated component 2 in step 3, a new pressure component 1 is placed from top to bottom, the target casting space is pressure-sealed, and a steel cage is placed, and then concrete is poured into the pressure-sealed target casting space and the pressure shell 101 connected to the original wall 3 to form a target wall 4; the pressure sealing is specifically to use the gradual slope 105 to push the force-bearing members 203 on both sides horizontally outward, thereby driving the leak-proof frame 204 to move synchronously, so that the prefabricated component 2 and the template 5 are closely fitted; the steel cage is specifically to vertically and centrally pass a plurality of steel bars through the embedded frame 201, and connect the plurality of steel bars to the steel bars on the outside of the embedded frame 201 by bundling or welding to form a steel cage; When the stressed strip 2033 is subjected to horizontal pressure, the horizontal pressure can be transmitted to the leak-proof frame 204 through the short side plate 2031 and the long side plate 2032, so that the elastic pad 202 is fully in contact with the template 5 to play a sealing role. At the same time, the short side plate 2031 can provide support for the long side plate 2032, so that the stressed strip 2033 can withstand greater pressure without damage, thereby improving the overall durability. It also includes step five: the poured concrete in the pressure shell 101 connected to the original wall 3 flows through the connecting hole 104 and is connected to the target wall 4 as a whole; concrete can be poured in the pressure chamber 102. Due to the fluidity of the concrete, the concrete can flow through the connecting hole 104 and be connected to the target wall 4 as a whole, thereby fixing the pressure component 1, so that the pressure component 1, the prefabricated component 2 and the target wall 4 are fixed as a whole.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concrete slurry leakage prevention construction device for civil air defense engineering, characterized in that ,include: A prefabricated component (2), the prefabricated component (2) comprising a leakproof frame (204), the leakproof frame (204) having a U-shaped cross-section, a plurality of embedded frames (201) being fixedly connected to a side of the leakproof frame (204) away from the opening, force-bearing members (203) being symmetrically arranged on the inner side of the leakproof frame (204), and a prefabricated width (61) being reserved between two of the force-bearing members (203); A pressure component (1) is arranged inside a prefabricated component (2), and can apply a horizontal outward thrust to a leak-proof frame (204) through two force-bearing members (203). The pressure component (1) comprises a pressure shell (101), a pressure chamber (102) is arranged inside the pressure shell (101), a pressure column (103) is fixedly connected to the middle of the pressure shell (101), connecting holes (104) are evenly arranged on the pressure column (103), and a gradually inclined portion (105) is symmetrically arranged at the lower portion of the pressure column (103), and the cross section of the gradually inclined portion (105) is gradually enlarged from bottom to top.

2. The device for preventing concrete slurry from leaking in civil air defense projects according to claim 1 is characterized in that: An X-support member (205) is fixedly connected inside the embedded frame (201), a steel bar accommodating cavity (206) is provided inside the embedded frame (201), an elastic pad (202) is fixedly connected to the outer side surface of the leakproof frame (204), and the total width of the leakproof frame (204) and the two elastic pads (202) is the same as the width of the wall.

3. The device for preventing concrete slurry from leaking in civil air defense engineering according to claim 1 is characterized in that: The force-bearing member (203) comprises a short side plate (2031), a long side plate (2032) and a force-bearing strip (2033) fixed as one body, the short side plate (2031) and the long side plate (2032) are both fixedly connected to the leakage-proof frame (204), the length of the short side plate (2031) is smaller than the length of the long side plate (2032), and the width of the leakage-proof frame (204) is larger than the width of the embedded frame (201).

4. The device for preventing concrete slurry from leaking in civil air defense projects according to claim 1 is characterized in that: The width of the upper cross section of the pressure column (103) is the pressure width (62), and the pressure width (62) is greater than the prefabrication width (61).

5. A method for preventing leakage of concrete slurry in civil air defense projects, using the device for preventing leakage of concrete slurry in civil air defense projects as claimed in any one of claims 1 to 4, characterized in that , including the following steps: Step 1: In the excavated foundation pit, form a casting space by using templates (5) and prefabricated components (2) according to the designed dimensions; Step 2: placing the pressure component (1) from top to bottom in the prefabricated component (2) in step 1, pressurizing and sealing the casting space, inserting a steel cage, and then pouring concrete into the original casting space after the pressure sealing to form the original wall (3); Step 3: Based on the prefabricated components (2) and the pressure components (1) on the original wall (3), a new prefabricated component (2) and a template (5) are used to surround the target casting space; Step 4: Place a new pressure component (1) from top to bottom into the new prefabricated component (2) in step 3, pressurize and seal the target casting space, insert a steel cage, and then pour concrete into the pressure-sealed target casting space and the pressure shell (101) connected to the original wall (3) to form a target wall (4).

6. A method for preventing concrete slurry leakage in civil air defense projects according to claim 5, characterized in that: The pressure sealing is specifically to use the gradually changing inclined portion (105) to push the force bearing members (203) on both sides outward horizontally, thereby driving the leak-proof frame (204) to move synchronously, so that the prefabricated component (2) and the template (5) are tightly fitted.

7. A method for preventing concrete slurry leakage in civil air defense projects according to claim 5, characterized in that: The inserting of the steel cage specifically involves vertically passing a plurality of steel bars through the embedded frame (201) in the center, and connecting the plurality of steel bars to the steel bars outside the embedded frame (201) by bundling or welding to form the steel cage.

8. The method for preventing concrete slurry leakage in civil air defense engineering according to claim 5, characterized in that: The method further comprises step five: the poured concrete in the pressure shell (101) connected to the original wall (3) flows through the connecting hole (104) and is connected to the target wall (4) as a whole.

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