Waterproof structure of post-cast strip construction joint

Abstract

The utility model relates to the technical field of building construction, in particular to a waterproof structure of a post-cast strip construction joint, which comprises a foundation bed, a reinforcement cage, a water-resistant plate, a water stop strip and a fixing piece, the water-resistant plate is mounted on the foundation bed, a post-cast strip is arranged above the water-resistant plate, and the post-cast strip is distributed along the length direction of the water-resistant plate; the steel reinforcement framework is arranged on the foundation bed, the water stop strips are installed on the two sides of the post-cast strip and are arranged in the length direction of the post-cast strip, and the fixing pieces are used for installing and fixing the water stop strips; according to the waterproof structure of the post-cast strip construction joint, the water stop strips are arranged on the two sides of the post-cast strip, and the fixing pieces are used for fixing, so that water can be effectively prevented from permeating from the construction joint, and the waterproof effect of the post-cast strip construction joint is improved.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a waterproof structure of a post-cast construction joint. Background Art

[0002] In buildings, post-cast joints are temporary construction joints set up to prevent concrete from shrinking and deforming due to temperature, humidity and other factors during the hardening process. However, if appropriate waterproofing measures are not taken when pouring post-cast joint concrete, moisture can easily pass through the construction joint and invade the interior of the concrete, causing the concrete strength and durability to decrease, affecting the quality of the concrete and the stability of the structure.

[0003] The prior art discloses a structure of a waterstop steel plate for a post-casting construction joint, comprising a foundation cushion or formwork, on which are two layers of bottom steel meshes, on top of which are a pair of parallel waterstop steel plates, a group of supporting steel bars are welded on both sides of each waterstop steel plate, the bottom ends of the supporting steel bars are supported on the top surface of the foundation cushion or formwork, the middle parts of the supporting steel bars are welded to the bottom steel meshes, the top surface of the waterstop steel plate is welded to the horizontal section of the L-shaped steel bar, the vertical section of the L-shaped steel bar is perpendicular to the top surface of the waterstop steel plate, a closing net is provided on one side of the vertical section of the L-shaped steel bar, and the closing net is fixedly connected to the vertical section of the L-shaped steel bar through the closing net fixing bars.

[0004] Regarding the above-mentioned related technologies, since the bottom end of the supporting steel bar is directly supported on the foundation cushion or the top surface of the formwork, the fluidity and vibration of the concrete during the concrete pouring process will cause the supporting steel bar to move or deform, affecting the waterproof effect of the waterstop steel plate. Utility Model Content

[0005] In order to improve the waterproof effect, the present application provides a waterproof structure for a post-cast construction joint.

[0006] The waterproof structure of the post-casting construction joint provided in this application adopts the following technical solution:

[0007] A waterproof structure for post-cast construction joints, comprising a foundation cushion, a steel frame, a waterproof plate, a water stop strip and fixings;

[0008] The waterproof board is installed on the foundation cushion layer, the post-casting strip is set above the waterproof board, and the post-casting strip is distributed along the length direction of the waterproof board;

[0009] The steel bar skeleton is arranged on the foundation cushion layer;

[0010] The water stop strips are installed on both sides of the post-cast strip, and the water stop strips are arranged along the length direction of the post-cast strip;

[0011] The fixing piece is used to install and fix the water stop strip.

[0012] By adopting the above technical scheme, firstly, a waterproof board is installed on the foundation cushion layer to ensure that the waterproof board is firmly connected to the foundation cushion layer, and then a post-cast strip is arranged above the waterproof board, and ensure that the post-cast strip is distributed along the length direction of the waterproof board, and then the steel frame is arranged on the foundation cushion layer, and water stop strips are installed on both sides of the post-cast strip, and finally the water stop strips are installed and fixed with fixings; the waterproof structure of the construction joint of the post-cast strip is set by setting water stop strips on both sides of the post-cast strip and fixing it with fixings, which can effectively prevent moisture from penetrating from the construction joint, thereby improving the waterproof effect of the construction joint of the post-cast strip.

[0013] Preferably, a waterproof roll is laid on the base cushion layer.

[0014] By adopting the above technical solution, the laying of the waterproof membrane can provide an additional waterproof layer for the foundation cushion, effectively preventing groundwater or rainwater from penetrating through the foundation cushion, protecting the building from moisture, and to a certain extent protecting the foundation cushion from erosion by chemicals or other potentially harmful substances in the soil, thereby extending the service life of the foundation structure.

[0015] Preferably, a water-stop caulking joint is provided at the bottom of the post-cast strip, the water-stop caulking joint is located between the post-cast strip and the waterproof membrane, and the water-stop caulking joint is filled with a water-stop material.

[0016] By adopting the above technical scheme, the water-stop caulking left at the bottom of the post-cast strip and the water-stop material filled inside it can provide a second waterproof barrier. The double waterproof setting ensures that even if one waterproof layer is damaged, the other can continue to function and effectively prevent moisture penetration; the water-stop caulking is located between the post-cast strip and the waterproof membrane and can tightly fill the joint, effectively blocking the moisture passage and enhancing the stability of the structure to a certain extent, resisting structural deformation caused by factors such as foundation settlement and temperature changes, and ensuring the long-term stability of the building.

[0017] Preferably, a waterstop strip is provided at the connection between the waterstop caulking joint and the waterproof membrane, and the waterstop strip is provided along the length direction of the post-cast strip.

[0018] By adopting the above technical solution, the installed waterstop can form an additional waterproof barrier between the waterstop joint and the waterproof membrane, effectively preventing moisture from penetrating from the connection, thereby enhancing the waterproof effect of the entire waterproof structure and ensuring the long-term waterproof performance of the building; in addition, the waterstop usually has good adaptability and sealing, and can adapt to connections of various shapes and sizes, ensuring a close fit between the waterstop and the waterproof membrane, thereby achieving better waterproof effect.

[0019] Preferably, the steel bar skeleton includes distribution bars, bottom plate bottom bars and bottom plate surface bars arranged in sequence from bottom to top;

[0020] The distribution reinforcement is arranged between the foundation cushion layer and the waterproof board, and the bottom plate bottom reinforcement and the bottom plate surface reinforcement are sequentially erected on the waterproof board and connected to the distribution reinforcement.

[0021] By adopting the above technical scheme, the distribution reinforcement is located between the foundation cushion layer and the waterproof board, which can effectively connect the foundation cushion layer and the waterproof board together, which is beneficial to enhancing the overall strength and stability of the structure. The setting of the bottom reinforcement and the bottom reinforcement is beneficial to further increase the bearing capacity of the structure. Through the close connection and reasonable layout of the steel skeleton, the load can be evenly transferred to the bottom reinforcement and the bottom reinforcement, avoiding the problem of local stress concentration and preventing cracks in the concrete during construction and use, thereby reducing the possibility of water penetration and further improving the waterproof effect.

[0022] Preferably, the fixing member comprises two push plates, two water stop plates and a plurality of push springs;

[0023] The two push plates and the two water stop plates are symmetrically distributed about the post-cast strip, and the push plates and the water stop plates are distributed along the length direction of the post-cast strip, and the sides of the two water stop plates close to each other abut against the post-cast strip;

[0024] The plurality of push springs are arranged between the water stop plate and the push plate, and are distributed in an array along the length direction of the water stop plate. One end of the push spring is fixedly connected to the push plate, and the other end is fixedly connected to the water stop plate.

[0025] By adopting the above technical scheme, the sides of the two waterstop plates that are close to each other are arranged to abut against the post-cast strip, which can ensure that the waterstop strips are tightly fitted on both sides of the post-cast strip, effectively preventing moisture penetration and improving the reliability of the waterproof structure; multiple push springs are distributed in an array along the length direction of the waterstop plate, one end is fixedly connected to the push plate, and the other end is fixedly connected to the waterstop plate, so that the waterstop plate can be evenly subjected to the pressure from the push springs, thereby ensuring that the pressure of the waterstop strips on both sides of the post-cast strip is evenly distributed, thereby improving the stability of the waterproof structure; the two push plates and the two waterstop plates are symmetrically distributed about the post-cast strip, which can ensure that the waterstop strips are tightly fitted and the pressure is evenly distributed on both sides of the post-cast strip, thereby achieving long-term waterproofing effect and reducing structural damage and maintenance costs caused by moisture penetration.

[0026] Preferably, the water stop plate is provided with an installation groove for installing the water stop strip on one side close to the post-cast strip, the installation groove is distributed along the length direction of the post-cast strip, the water stop strip is located in the installation groove and one side of the water stop strip extends into the post-cast strip.

[0027] By adopting the above technical scheme, the installation grooves are distributed along the length direction of the post-cast strip, so that the waterstop strip can be accurately positioned on both sides of the post-cast strip during installation, thereby ensuring a close fit between the waterstop strip and the post-cast strip and not prone to displacement or deformation, effectively preventing moisture penetration, and helping to improve the reliability of the waterproof structure; one side of the waterstop strip extends into the post-cast strip, so that a closer contact is formed between the waterstop strip and the concrete of the post-cast strip, making it easier to prevent moisture from penetrating through the construction joint, thereby improving the waterproof effect, and reducing deformation and cracking of the waterproof structure caused by factors such as concrete shrinkage and temperature changes, which is beneficial to improving the durability and service life of the waterproof structure.

[0028] Preferably, a plurality of the installation grooves and the plurality of water stop strips are provided, and the plurality of the installation grooves and the plurality of the water stop strips are evenly distributed along the height direction of the water stop plate.

[0029] By adopting the above technical scheme, setting up multiple installation grooves and water stop strips can ensure that effective waterproofing measures are taken at various positions along the height direction of the post-cast strip, which is beneficial to enhancing the comprehensiveness and reliability of the waterproof structure and effectively preventing moisture from penetrating through construction joints at different heights; multiple water stop strips are evenly distributed along the height direction of the water stop plate, so that the water stop strips can evenly share the pressure when subjected to the buoyancy of concrete or external force, avoiding excessive force at a single point that causes the water stop strip to shift or be damaged, thereby improving the stability and durability of the water stop strip.

[0030] Preferably, the water stop strip is a water stop strip that swells when exposed to water.

[0031] By adopting the above technical solution, since the water-swelling waterstop strip has the characteristic of rapidly expanding when encountering water, it can fill all irregular surfaces, holes and gaps in the joints after expansion, and at the same time generate huge contact pressure, thereby completely preventing water penetration and ensuring the durability of the waterproof effect.

[0032] Preferably, a waterproof layer is provided on one side of the waterproof board close to the post-cast strip, and the waterproof layer includes a water-absorbing layer and a polyester non-woven fabric isolation layer laid sequentially from bottom to top, and the polyester non-woven fabric isolation layer is provided between the post-cast strip and the water-absorbing layer.

[0033] By adopting the above technical scheme, the water-absorbing layer can quickly absorb and store moisture, effectively preventing moisture from penetrating into the waterproof board, thereby improving the waterproof performance; the polyester non-woven fabric isolation layer is located between the post-cast strip and the water-absorbing layer, playing an isolation role, preventing the concrete or moisture in the post-cast strip from directly contacting the water-absorbing layer, thereby further preventing moisture from entering the interior of the structure through the waterproof board; at the same time, the combined use of the water-absorbing layer and the polyester non-woven fabric isolation layer facilitates the formation of a multi-level waterproof system, which can more effectively cope with moisture penetration from different sources and forms, and improve the reliability and durability of the waterproof structure.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. The waterproof structure of the post-cast belt construction joint is set by setting water stop strips on both sides of the post-cast belt and fixing the structure with fixing parts, which can effectively prevent moisture from penetrating from the construction joint and improve the waterproof effect of the post-cast belt construction joint.

[0036] 2. The two waterstop plates are arranged on one side close to each other and abutted against the post-cast strip, which can ensure that the waterstop strips are tightly fitted on both sides of the post-cast strip, effectively preventing moisture penetration and improving the reliability of the waterproof structure; multiple push springs are distributed in an array along the length direction of the waterstop plate, one end is fixedly connected to the push plate, and the other end is fixedly connected to the waterstop plate, so that the waterstop plate can be evenly subjected to the pressure from the push springs, thereby ensuring that the pressure of the waterstop strips on both sides of the post-cast strip is evenly distributed, thereby improving the stability of the waterproof structure; the two push plates and the two waterstop plates are symmetrically distributed about the post-cast strip, which can ensure that the waterstop strips are tightly fitted on both sides of the post-cast strip and the pressure is evenly distributed, thereby achieving long-term waterproofing effect and reducing structural damage and maintenance costs caused by moisture penetration. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the waterproof structure of the post-cast construction joint in the embodiment of the present application.

[0038] Figure 2 It is a cross-sectional view of the waterproof structure of the post-cast construction joint in the embodiment of the present application.

[0039] Explanation of the reference numerals in the accompanying drawings: 01, post-cast strip; 1, foundation cushion layer; 11, waterproof membrane; 12, water-stop caulking; 13, water-stop strip; 2, steel bar skeleton; 21, distribution ribs; 22, bottom plate bottom ribs; 23, bottom plate surface ribs; 3, water-resistant board; 31, waterproof layer; 311, water-absorbing layer; 312, polyester non-woven fabric isolation layer; 4, water-stop strip; 5, fixing part; 51, push plate; 52, water-stop plate; 53, push spring; 54, installation groove. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-2 This application is described in further detail.

[0041] The embodiment of the present application discloses a waterproof structure for a post-cast construction joint.

[0042] Reference Figure 1A waterproof structure of a post-cast construction joint includes a foundation cushion layer 1, a steel frame 2, a waterproof board 3, a water stop strip 4 and a fixing part 5. The foundation cushion layer 1 is cast on the top wall of the foundation pit, the steel frame 2 and the waterproof board 3 are both installed on the top of the foundation cushion layer 1, the post-cast strip 01 is arranged at the center position above the waterproof board 3, and the post-cast strip 01 is distributed along the length direction of the foundation cushion layer 1, the water stop strip 4 is arranged on both sides of the post-cast strip 01, and the fixing part 5 is used to install and fix the post-cast strip 01 and the water stop strip 4.

[0043] Reference Figure 1 and Figure 2 The steel skeleton 2 includes distribution bars 21, bottom plate bottom bars 22 and bottom plate surface bars 23 which are arranged in sequence from bottom to top. The distribution bars 21 include horizontal section auxiliary bars and inclined section connecting bars which are arranged in one piece. The horizontal section auxiliary bars are arranged between the foundation cushion layer 1 and the waterproof board 3, and the horizontal section auxiliary bars are completely located in the inner cavity of the foundation pit. One end of the inclined section connecting bar is welded to the horizontal section auxiliary bars, and the other end is arranged outside the foundation pit. A water-stop caulking joint 12 is also reserved at the center of the horizontal section auxiliary bars. The waterproof board 3 is horizontally arranged at the top of the foundation pit and distributed along the length direction of the post-casting belt 01. The bottom plate bottom bars 22 are erected on the waterproof board 3 and the bottom plate is welded to the inclined section connecting bars. The bottom plate surface bars 23 are horizontally arranged just above the bottom plate bottom bars 22 and are welded to the inclined section connecting bars. The cast-in-place strip 01 is arranged between the bottom rib 22 of the bottom plate and the surface rib 23 of the bottom plate; the water-stop caulking 12 is vertically arranged at the bottom of the post-cast-in-place strip 01, and the waterproof membrane 11 is laid on the top wall of the foundation cushion layer 1. The water-stop caulking 12 is located between the post-cast-in-place strip 01 and the waterproof membrane 11, and the water-stop caulking 12 is filled with waterproof material. A waterstop strip 13 is also arranged at the connection between the waterstop caulking 12 and the waterproof membrane 11. The waterstop strip 13 is bonded to the top wall of the waterproof membrane 11, and the waterstop strip 13 is arranged along the length direction of the waterproof membrane 11; in addition, a waterproof layer 31 is also arranged on the top wall of the waterproof board 3, and the waterproof layer 31 includes a water-absorbing layer 311 and a polyester non-woven fabric isolation layer 312 arranged from bottom to top, and the polyester non-woven fabric isolation layer 312 is arranged between the post-cast-in-place strip 01 and the water-absorbing layer 311.

[0044] Reference Figure 1 and Figure 2The fixing member 5 includes two push plates 51, two water stop plates 52 and a plurality of push springs 53. The two push plates 51 and the two water stop plates 52 are respectively located on both sides of the post-cast strip 01, and the two push plates 51 and the two water stop plates 52 are symmetrically distributed about the post-cast strip 01. The push plates 51 and the water stop plates 52 are arranged along the length direction of the post-cast strip 01, and the two water stop plates 52 are also provided with installation grooves 54 for installing the water stop strip 4 on the side walls on one side of each other. The installation grooves 54 are distributed along the length direction of the post-cast strip 01. One side of the water stop strip 4 is located in the installation groove 54, and the other side extends into the post-cast strip 01. In order to improve the waterproof performance of the construction joint of the post-cast strip 01, In the present application, multiple installation grooves 54 and multiple waterstop strips 4 are provided, and the multiple installation grooves 54 and multiple waterstop strips 4 are evenly distributed along the height direction of the waterstop plate 52. In the present embodiment, three waterstop strips 4 are provided, corresponding to three installation grooves 54. The three installation grooves 54 and the three waterstop strips 4 are all arranged along the length direction of the post-cast strip 01. The waterstop strip 4 in the present application is a water-swelling waterstop strip 4; multiple push springs 53 are arranged between the waterstop plate 52 and the push plate 51, and the multiple push springs 53 are distributed in an array along the length direction of the waterstop plate 52, one end of the push spring 53 is fixedly connected to the push plate 51, and the other end is fixedly connected to the waterstop plate 52.

[0045] The implementation principle of the waterproof structure of the post-cast construction joint in an embodiment of the present application is: first, a waterproof board 3 is installed on the foundation cushion layer 1 to ensure that the waterproof board 3 is firmly connected to the foundation cushion layer 1, and then a post-cast strip 01 is arranged above the waterproof board 3, and it is ensured that the post-cast strip 01 is distributed along the length direction of the waterproof board 3, and then a steel skeleton 2 is arranged on the foundation cushion layer 1, and water stop strips 4 are installed on both sides of the post-cast strip 01, and finally the water stop strip 4 is installed and fixed using the fixing parts 5.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A waterproof structure for a post-cast construction joint, characterized in that: It comprises a foundation cushion layer (1), a steel reinforcement frame (2), a waterproof plate (3), a water stop strip (4) and a fixing member (5); The waterproof board (3) is installed on the foundation cushion layer (1), the post-cast strip (01) is arranged above the waterproof board (3), and the post-cast strip (01) is distributed along the length direction of the waterproof board (3); The steel reinforcement skeleton (2) is arranged on the foundation cushion layer (1); The water stop strips (4) are installed on both sides of the post-cast strip (01), and the water stop strips (4) are arranged along the length direction of the post-cast strip (01); The fixing member (5) is used to install and fix the water stop strip (4).

2. The waterproof structure of the post-casting construction joint according to claim 1 is characterized in that: A waterproof coiled material (11) is laid on the base cushion layer (1).

3. The waterproof structure of the post-casting construction joint according to claim 2 is characterized in that: A water-stopping caulking joint (12) is provided at the bottom of the post-cast strip (01), the water-stopping caulking joint (12) is located between the post-cast strip (01) and the waterproof coiled material (11), and the water-stopping caulking joint (12) is filled with a water-stopping material.

4. The waterproof structure of the post-casting construction joint according to claim 3 is characterized in that: A waterstop strip (13) is provided at the connection between the waterstop caulking joint (12) and the waterproof coiled material (11), and the waterstop strip (13) is provided along the length direction of the post-cast strip (01).

5. The waterproof structure of the post-casting construction joint according to claim 1 is characterized in that: The steel bar skeleton (2) comprises distribution bars (21), bottom plate bars (22) and bottom plate surface bars (23) which are arranged in sequence from bottom to top; The distribution ribs (21) are arranged between the foundation cushion layer (1) and the waterproof board (3), and the bottom plate bottom ribs (22) and the bottom plate surface ribs (23) are sequentially erected on the waterproof board (3) and connected to the distribution ribs (21).

6. The waterproof structure of the post-casting construction joint according to claim 1 is characterized in that: The fixing member (5) comprises two push plates (51), two water stop plates (52) and a plurality of push springs (53); The two push plates (51) and the two water stop plates (52) are symmetrically distributed about the post-cast strip (01), the push plates (51) and the water stop plates (52) are distributed along the length direction of the post-cast strip (01), and the sides of the two water stop plates (52) close to each other are in contact with the post-cast strip (01); The plurality of push springs (53) are arranged between the water stop plate (52) and the push plate (51), and the plurality of push springs (53) are distributed in an array along the length direction of the water stop plate (52), one end of the push spring (53) is fixedly connected to the push plate (51), and the other end is fixedly connected to the water stop plate (52).

7. The waterproof structure of the post-casting construction joint according to claim 6 is characterized in that: The water stop plate (52) is provided with an installation groove (54) for installing the water stop strip (4) on one side close to the post-cast strip (01); the installation groove (54) is distributed along the length direction of the post-cast strip (01); the water stop strip (4) is located in the installation groove (54) and one side of the water stop strip (4) extends into the post-cast strip (01).

8. The waterproof structure of the post-casting construction joint according to claim 7 is characterized in that: A plurality of the installation grooves (54) and the water stop strips (4) are provided, and the plurality of the installation grooves (54) and the plurality of the water stop strips (4) are evenly distributed along the height direction of the water stop plate (52).

9. The waterproof structure of the post-casting construction joint according to claim 8 is characterized in that: The water stop strip (4) is a water stop strip (4) that swells when in contact with water.

10. The waterproof structure of the post-casting construction joint according to claim 1 is characterized in that: A waterproof layer (31) is provided on one side of the waterproof board (3) close to the post-cast strip (01), and the waterproof layer (31) comprises a water-absorbing layer (311) and a polyester non-woven fabric isolation layer (312) which are laid in sequence from bottom to top, and the polyester non-woven fabric isolation layer (312) is provided between the post-cast strip (01) and the water-absorbing layer (311).

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