An anti-leakage slurry construction device and method for civil air defense projects

Abstract

The present invention provides a construction device and method for preventing concrete leakage in civil air defense projects, which relates to the technical field of concrete construction. The construction device for preventing concrete leakage in civil air defense projects includes a prefabricated component and a pressing component. The prefabricated component includes a leakage prevention frame, and the cross-sectional shape of the leakage prevention frame is U-shaped. A plurality of embedded frames are fixedly connected to the side of the leakage prevention frame far away from the opening. Stress members are symmetrically arranged inside the leakage prevention frame, and a prefabricated width is reserved between the two stress members. The pressing component is arranged inside the prefabricated component and can apply a horizontally outward thrust to the leakage prevention frame through the two stress members. The pressing component includes a pressing housing. By setting the pressing component and the prefabricated component, and through the mutual cooperation of the pressing component and the prefabricated component, a uniform horizontal pressure can be applied to the inner wall of the formwork, avoiding concrete leakage, saving the cost of pouring concrete, and making the pouring simple.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete construction, and specifically relates to a leakage-proof slurry construction device and method for concrete in civil air defense projects. Background Technique

[0002] With the construction of urbanization, the utilization degree of underground space development gradually increases. When constructing underground buildings, the ground is first excavated into a foundation pit, a pouring space is formed by using formwork in the foundation pit, a steel reinforcement cage is placed in the pouring space, and then concrete is poured into the pouring space. For underground continuous building walls, usually after one section of the wall is constructed, the next section of the wall is constructed. However, when constructing one section of the wall, the concrete is likely to flow out from the gap between the steel reinforcement cage and the pouring space, thus affecting the quality of the building wall.

[0003] In related technologies, such as an anti-leakage slurry device for constructing a diaphragm wall with the publication number of: CN220013777U, which includes a top plate, side plates, a bottom plate and thin steel plates. The side plates are arranged in the middle of the top plate and the bottom plate. The top plate, the side plates and the bottom plate are arranged in an H-shaped structure. The thin steel plates include a first thin steel plate and a second thin steel plate. One side of the first thin steel plate is connected to the left wing flange of the top plate, and one side of the second thin steel plate is connected to the left wing flange of the bottom plate. The first thin steel plate and the second thin steel plate have the same size. The tops of the first thin steel plate and the second thin steel plate are at the same height as the top ends of the top plate and the bottom plate. The bottoms of the first thin steel plate and the second thin steel plate are lower than the bottom ends of the top plate and the bottom plate.

[0004] Although this patent can apply pressure to the groove wall by adding concrete, however, the pressure provided by the self-gravity of the concrete is relatively small. When the filling amount of the concrete is small, only the bottom groove wall can be pressured. When the concrete is added from top to bottom, the concrete is likely to leak from the groove wall where no pressure is applied at the upper part, thus causing waste of the concrete and making it difficult to pour the concrete. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the present invention provides a leakage-proof slurry construction device and method for concrete in civil air defense projects, which solves the problems in the prior art that it is necessary to pour concrete to apply pressure to the groove wall, the sealing performance of the concrete pouring space is not good, resulting in waste of the concrete and great difficulty in pouring the concrete.

[0007] (II) Technical Solutions

[0008] To achieve the above purposes, the present invention is realized through the following technical solutions: A leakage-proof slurry construction device for concrete in civil air defense projects, comprising:

[0009] A prefabricated component, the prefabricated component includes a leak-proof frame, the cross-sectional shape of the leak-proof frame is U-shaped, a plurality of embedded frames are fixedly connected to the side of the leak-proof frame away from the opening, stress members are symmetrically arranged inside the leak-proof frame, and a prefabricated width is reserved between the two stress members;

[0010] A pressure-applying component, the pressure-applying component is arranged inside the prefabricated component, and can apply a horizontally outward thrust to the leak-proof frame through two stress members. The pressure-applying component includes a pressure-applying housing, a pressure-applying cavity is arranged inside the pressure-applying housing, a pressure-applying column is fixedly connected to the middle of the pressure-applying housing, communication holes are evenly arranged on the pressure-applying column, gradually changing inclined parts are symmetrically arranged at the lower part of the pressure-applying column, and the cross-section of the gradually changing inclined part gradually becomes larger from bottom to top. By setting the pressure-applying component and the prefabricated component, and utilizing the mutual cooperation of the pressure-applying component and the prefabricated component, a uniformly horizontal pressure can be applied to the inner wall of the formwork, avoiding concrete leakage, saving the cost of pouring concrete, and the pouring is simple; and under the action of the communication holes and the X support members, it is convenient for concrete to flow and increases the placement space of steel bars, improving the connection strength of adjacent walls. The overall structure is simple and the manufacturing cost is low.

[0011] Preferably, an X support member is fixedly connected inside the embedded frame, a steel bar accommodating cavity is arranged inside the embedded frame, an elastic pad is fixedly connected to the outer side surface of the leak-proof frame, and the total width of the leak-proof frame and the two elastic pads is the same as the width of the wall.

[0012] Preferably, the stress member includes a short side plate, a long side plate and a stress bar block fixed as a whole. 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 less than that of the long side plate, and the width of the leak-proof frame is greater than the width of the embedded frame. When the stress bar block is subjected to a 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 formwork, playing a sealing role, and the short side plate can provide support force for the long side plate, enabling the stress bar block to bear a greater pressure without being damaged, and improving the overall durability.

[0013] Preferably, the width of the upper cross-section of the pressure-applying column is the pressure-applying width, and the pressure-applying width is greater than the prefabricated width.

[0014] The present invention also provides a construction method for preventing concrete leakage in a civil air defense project, adopting the above-mentioned construction device for preventing concrete leakage in a civil air defense project, including the following steps:

[0015] Step 1: In the excavated foundation pit, a raw pouring space is surrounded by using formwork and prefabricated components according to the design dimensions;

[0016] Step 2: Place the pressure application component into the prefabricated component in Step 1 from top to bottom, apply pressure to seal the pouring space, place the steel reinforcement cage, and then pour concrete into the original pouring space after pressure sealing to form the original wall.

[0017] Step 3: Based on the prefabricated component and the pressure application component on the original wall, use new prefabricated components and templates to enclose a target pouring space.

[0018] Step 4: In the new prefabricated component in Step 3, place a new pressure application component from top to bottom, apply pressure to seal the target pouring space, place the steel reinforcement cage, and then pour concrete into the pressure-sealed target pouring space and the pressure shell connected to the original wall to form the target wall.

[0019] Preferably, the pressure sealing specifically uses the gradually changing inclined part to horizontally push the force-receiving parts on both sides outward, thereby driving the leakage prevention frame to move synchronously, so that the prefabricated component is closely attached to the template.

[0020] Preferably, the placement of the steel reinforcement cage specifically means vertically and centrally passing multiple steel bars through the embedded frame, and connecting the multiple steel bars to the steel bars outside the embedded frame by bundling or welding to form a steel reinforcement cage.

[0021] Preferably, it further includes Step 5: The concrete poured in the pressure shell connected to the original wall flows through the communication hole and is connected to the target wall as a whole.

[0022] (3) Beneficial effects

[0023] The present invention provides a construction device and method for preventing concrete leakage in civil air defense projects. It has the following beneficial effects:

[0024] Through the pressure application component and the prefabricated component provided in the present invention, by the mutual cooperation of the pressure application component and the prefabricated component, a uniform horizontal pressure can be applied to the inner wall of the template, avoiding concrete leakage, saving the cost of pouring concrete, and the pouring is simple; and under the action of the communication hole and the X support member, it is convenient for the concrete to flow and increases the placement space of the steel bars, improving the connection strength of adjacent walls. The overall structure is simple and the manufacturing cost is low. Description of the drawings

[0025] Figure 1 Is a three-dimensional view of the split state of the present invention;

[0026] Figure 2 Is a three-dimensional view of the pressure application component of the present invention;

[0027] Figure 3 Is a three-dimensional view of the prefabricated component of the present invention;

[0028] Figure 4 Is a top view of the pressure application component of the present invention;

[0029] Figure 5 Top view of the prefabricated component of the present invention;

[0030] Figure 6 Structural schematic diagram of the force-bearing member of the present invention;

[0031] Figure 7 Stereogram of the construction state of the present invention;

[0032] Figure 8 Top view of the construction state of the present invention.

[0033] Among them, 1. Pressing assembly; 101. Pressing housing; 102. Pressing cavity; 103. Pressing column; 104. Communication hole; 105. Gradual inclined part; 2. Prefabricated component; 201. Embedded frame; 202. Elastic pad; 203. Force-bearing member; 2031. Short side plate; 2032. Long side plate; 2033. Force-bearing strip; 204. Leakage-proof frame; 205. X support member; 206. Steel bar accommodation cavity; 61. Prefabricated width; 62. Pressing width; 3. Original wall; 4. Target wall; 5. Formwork. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] As Figures 1-8 shown, an anti-leakage slurry construction device for concrete in a civil air defense project provided by an embodiment of the present invention includes:

[0036] A prefabricated component 2, the prefabricated component 2 includes a leakage-proof frame 204, the cross-sectional shape of the leakage-proof frame 204 is U-shaped, a plurality of embedded frames 201 are fixedly connected to the side of the leakage-proof frame 204 away from the opening, force-bearing members 203 are symmetrically arranged inside the leakage-proof frame 204, and a prefabricated width 61 is reserved between the two force-bearing members 203;

[0037] Referring to Figure 1 , Figure 3 , Figure 5 , the leakage-proof frame 204 can cooperate with the formwork 5 to form a good sealing space. The force-bearing member 203 can expand the pressing area of the horizontal pressure and improve the anti-leakage effect. The embedded frame 201 is used to connect the walls and improve the connection strength of adjacent walls.

[0038] The 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 leak-proof frame 204. The total width of the leak-proof frame 204 and the two elastic pads 202 is the same as the width of the wall body;

[0039] Reference Figure 5 , The X support member 205 can provide a support force for the embedded frame 201, and increase the contact area between the concrete and the embedded frame 201, improving the connection strength. The steel bar accommodating cavity 206 is used for the steel bars to pass through, facilitating the placement of the steel bars.

[0040] The stress member 203 includes a short side plate 2031, a long side plate 2032 and a stress bar block 2033 that are fixed together. Both the short side plate 2031 and the long side plate 2032 are fixedly connected to the leak-proof frame 204. The length of the short side plate 2031 is less than that of the long side plate 2032. The width of the leak-proof frame 204 is greater than the width of the embedded frame 201;

[0041] Reference Figure 6 , When the stress bar block 2033 is subjected to a 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, making the elastic pad 202 fully contact with the template 5, playing a sealing role. At the same time, the short side plate 2031 can provide a support force for the long side plate 2032, enabling the stress bar block 2033 to withstand greater pressure without damage, improving the overall durability.

[0042] The pressure - applying assembly 1 is provided inside the prefabricated component 2. It can apply a horizontally outward thrust to the leak-proof frame 204 through the two stress members 203. The pressure - applying assembly 1 includes a pressure - applying housing 101. A pressure - applying cavity 102 is provided inside the pressure - applying housing 101. A pressure - applying column 103 is fixedly connected to the middle of the pressure - applying housing 101. The width of the upper cross - section of the pressure - applying column 103 is the pressure - applying width 62. The pressure - applying width 62 is greater than the prefabricated width 61. Communication holes 104 are evenly provided on the pressure - applying column 103. Gradual inclined parts 105 are symmetrically arranged at the lower part of the pressure - applying column 103. The cross - section of the gradual inclined part 105 gradually becomes larger from bottom to top;

[0043] Reference Figure 2 、 Figure 4 , During the pressure - applying operation, the pressure - applying assembly 1 is placed from top to bottom. Since the cross - section of the gradual inclined part 105 gradually becomes larger from bottom to top, it will gradually push the stress bar block 2033, applying a horizontally outward thrust to the stress bar block 2033, thus playing a pressure - applying role. And because the pressure - applying column 103 is the same height as the prefabricated component 2 as a whole, it can form uniform pressure at various positions. Compared with the traditional single - point position pressure application, it has the characteristics of uniform pressure application, stable stress, and durable structure. At the same time, it takes into account reducing the construction cost, the construction cost of the locking parts enterprise, and increasing the enterprise profit rate;

[0044] Concrete can be poured into the pressure chamber 102. Due to the fluidity of the concrete, the concrete can flow through the communication holes 104 and be connected to the target wall 4 as a whole, playing a role in fixing the pressure application component 1, making the pressure application component 1, the prefabricated component 2 and the target wall 4 fixed as a whole, achieving double pressure application and fixation, and improving the firmness of the wall. By filling the inclined side of the pressure application and support housing 101, support can be provided for the long side plate 2032, increasing the support surface provided by the pressure application component 1, not only ensuring good sealing performance, but also preventing the single position of the force-bearing strip 2033 from being damaged due to excessive force, and extending the overall service life of the force-bearing member 203.

[0045] Reference Figure 7 、 Figure 8 Moreover, the embodiment of the present invention further provides a construction method for preventing concrete leakage in civil air defense projects. Using the above-mentioned construction device for preventing concrete leakage in civil air defense projects, the method includes the following steps:

[0046] Step 1: In the excavated foundation pit, according to the design dimensions, use the formwork 5 and the prefabricated component 2 to enclose the original pouring space; the formwork 5 and the prefabricated component 2 can initially form the original pouring space.

[0047] Step 2: Place the pressure application component 1 into the prefabricated component 2 in Step 1 from top to bottom, apply pressure to seal the pouring space, place the steel reinforcement cage, and then pour concrete into the originally pressure-sealed pouring space to form the original wall 3; the pressure sealing specifically uses the gradually changing inclined part 105 to horizontally push the force-bearing members 203 on both sides outward, thereby driving the leakage prevention frame 204 to move synchronously, making the prefabricated component 2 closely fit with the formwork 5; placing the steel reinforcement cage specifically means vertically and centrally passing multiple steel bars through the embedding frame 201, and connecting the multiple steel bars to the steel bars outside the embedding frame 201 by bundling or welding to form a steel reinforcement cage;

[0048] Step 3: On the basis of the prefabricated component 2 and the pressure application component 1 on the original wall 3, use new prefabricated components 2 and formwork 5 to enclose the target pouring space;

[0049] Step 4: In the new prefabricated component 2 in Step 3, place a new pressure application component 1 from top to bottom, apply pressure to seal the target pouring space, place the steel reinforcement cage, and then pour concrete into the pressure-sealed target pouring space and the pressure application housing 101 connected to the original wall 3 to form the target wall 4; the pressure sealing specifically uses the gradually changing inclined part 105 to horizontally push the force-bearing members 203 on both sides outward, thereby driving the leakage prevention frame 204 to move synchronously, making the prefabricated component 2 closely fit with the formwork 5; placing the steel reinforcement cage specifically means vertically and centrally passing multiple steel bars through the embedding frame 201, and connecting the multiple steel bars to the steel bars outside the embedding frame 201 by bundling or welding to form a steel reinforcement cage;

[0050] When the stressed block 2033 is subjected to a 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, playing a sealing role. At the same time, the short side plate 2031 can provide a supporting force for the long side plate 2032, enabling the stressed block 2033 to withstand greater pressure without being damaged, and improving the overall durability;

[0051] It further includes Step Five: The concrete poured in the pressure-applying housing 101 connected to the original wall 3 flows through the communication hole 104 and is connected to the target wall 4 as a whole; Concrete can be poured in the pressure-applying cavity 102. Due to the fluidity of the concrete, the concrete can flow through the communication hole 104 and be connected to the target wall 4 as a whole, playing a role in fixing the pressure-applying assembly 1, and fixing the pressure-applying assembly 1, the prefabricated assembly 2 and the target wall 4 as a whole.

[0052] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction device for preventing concrete leakage in civil air defense projects, characterized in that , including: A prefabricated component (2), the prefabricated component (2) includes a leak-proof frame (204), the cross-sectional shape of the leak-proof frame (204) is U-shaped, a plurality of embedding frames (201) are fixedly connected to the side of the leak-proof frame (204) away from the opening, stress members (203) are symmetrically arranged inside the leak-proof frame (204), and a prefabricated width (61) is reserved between the two stress members (203); A pressure-applying component (1), the pressure-applying component (1) is arranged inside the prefabricated component (2), and can apply a horizontally outward thrust to the leak-proof frame (204) through the two stress members (203). The pressure-applying component (1) includes a pressure-applying housing (101), a pressure-applying cavity (102) is arranged inside the pressure-applying housing (101), a pressure-applying column (103) is fixedly connected to the middle of the pressure-applying housing (101), communication holes (104) are uniformly arranged on the pressure-applying column (103), gradually changing inclined parts (105) are symmetrically arranged at the lower part of the pressure-applying column (103), and the cross-section of the gradually changing inclined part (105) gradually becomes larger from bottom to top; the width of the upper cross-section of the pressure-applying column (103) is a pressure-applying width (62), and the pressure-applying width (62) is greater than the prefabricated width (61).

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

3. A concrete leakage prevention and slurry leakage prevention construction device for civil air defense projects according to claim 1, characterized in that: The stress member (203) includes a short side plate (2031), a long side plate (2032) and a stress bar block (2033) fixed together. The short side plate (2031) and the long side plate (2032) are both fixedly connected to the leak-proof frame (204), the length of the short side plate (2031) is less than that of the long side plate (2032), and the width of the leak-proof frame (204) is greater than the width of the embedding frame (201).

4. A construction method for preventing concrete leakage in civil air defense projects, using the construction device for preventing concrete leakage in civil air defense projects described in any one of claims 1-3, characterized in that , including the following steps: Step 1: In the excavated foundation pit, use a template (5) and a prefabricated component (2) to enclose an original pouring space according to the design dimensions; Step 2: Place the pressure-applying component (1) into the prefabricated component (2) in Step 1 from top to bottom, apply pressure to seal the pouring space, place a steel bar cage, and then pour concrete into the originally pressure-sealed pouring space to form an original wall (3); Step 3: On the basis of the prefabricated component (2) and the pressure-applying component (1) on the original wall (3), use a new prefabricated component (2) and a template (5) to enclose a target pouring space; Step 4: In the new prefabricated component (2) in Step 3, place a new pressure-applying component (1) from top to bottom, apply pressure to seal the target pouring space, place a steel bar cage, and then pour concrete into the pressure-sealed target pouring space and the pressure-applying housing (101) connected to the original wall (3) to form a target wall (4).

5. A construction method for preventing concrete leakage in civil air defense projects according to claim 4, characterized in that: The pressure application and sealing specifically uses the gradual inclined part (105) to horizontally push the force-receiving members (203) on both sides outwards, thereby driving the leakage-proof frame (204) to move synchronously, so that the prefabricated component (2) is closely attached to the formwork (5).

6. A construction method for preventing concrete leakage in civil air defense projects according to claim 4, characterized in that: The placement of the steel reinforcement cage specifically means vertically and centrally passing multiple steel bars through the embedded frame (201), and connecting the multiple steel bars to the steel bars outside the embedded frame (201) by bundling or welding to form a steel reinforcement cage.

7. A construction method for preventing concrete leakage in civil air defense projects according to claim 4, characterized in that: It further includes Step Five: The concrete poured in the pressure application housing (101) connected to the original wall (3) flows through the communication holes (104) and is connected to the target wall (4) as a whole.

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