Underground garage bottom plate post-cast strip advanced waterproof structure

Abstract

The utility model provides a kind of underground garage bottom plate post-cast strip advanced waterproof structure, it is related to advanced waterproof technical field, including bottom waterstop;The bottom plate concrete layer is bonded with water-swelling waterstop strip, and additional reinforcement is embedded in the inside of bottom plate concrete layer;The lower side of bottom waterstop is bonded with fine stone concrete layer, and the upper side of bottom waterstop is placed with polystyrene board, the upper side of polystyrene board is bonded with waterstop pad, and post-cast concrete is poured in the upper side of waterstop pad;By the setting of polystyrene board, bottom plate concrete layer and waterstop pad, make multiple polystyrene board plug-in joint closer, realize the waterproof of polystyrene board upper side position, improve the advanced waterstop performance of post-cast strip, solve the problem that traditional underground garage bottom plate post-cast strip extruded polystyrene board upper side gap does not have waterproof measure and multiple plastic polystyrene board front and rear butt joint position cannot be accurately fixed alignment, leading to poor advanced waterproof performance of post-cast strip.

Description

Technical Field

[0001] This utility model belongs to the field of advanced waterproofing technology, and more specifically, it relates to an advanced waterproofing structure for the post-pouring strip of the foundation slab of an underground garage. Background Technology

[0002] A post-cast strip in basement slab construction is a structural measure used to prevent harmful cracks in reinforced concrete structures caused by uneven shrinkage or settlement. The post-cast strip temporarily divides the basement slab structure into several sections, and after a period of time, concrete is poured at the construction joint to connect the divided sections into a whole. Currently, in basement construction, because the base slab needs to be poured in sections, multiple sets of extruded polystyrene (XPS) boards are usually arranged above a set of waterstops to prevent groundwater seepage at the joints of the post-cast strips. However, the XPS boards are only supported by additional reinforcing cages, and the joints between the multiple XPS boards cannot be accurately aligned, resulting in staggered separation and the formation of seepage gaps. Furthermore, the waterstop is only located at the bottom of the XPS boards and has a simple waterproof surface structure; the upper part of the XPS boards lacks waterproofing measures, affecting the advanced waterproofing performance of the post-cast strip. Summary of the Invention

[0003] To address the aforementioned technical problems, this utility model provides an advanced waterproofing structure for the post-cast strip of an underground garage floor slab. This structure solves the problems of the lack of waterproofing measures on the upper side of the extruded polystyrene board in the post-cast strip of traditional underground garage floor slabs, and the inability to accurately fix and align the front and rear joints of multiple sets of polystyrene boards, resulting in poor advanced waterproofing performance of the post-cast strip.

[0004] This utility model provides a pre-waterproofing structure for the post-cast strip of an underground garage floor slab, including a subbase; a fine aggregate concrete layer is laid on the upper side of the subbase; a waterproof membrane is embedded inside the fine aggregate concrete layer, and a base slab concrete layer is poured on the upper side of the fine aggregate concrete layer; it also includes a bottom waterstop; the base slab concrete layer is bonded to a water-swellable waterstop strip, additional reinforcing bars are embedded inside the base slab concrete layer, and additional distribution reinforcing bars are welded to the outer side of the additional reinforcing bars; a fine aggregate concrete layer is bonded to the lower side of the bottom waterstop, a polystyrene board is placed on the upper side of the bottom waterstop, a waterstop pad is bonded to the upper side of the polystyrene board, and post-cast concrete is poured on the upper side of the waterstop pad.

[0005] Furthermore, the upper side of the bottom concrete layer is provided with a through-type groove structure, the bottom of the groove is an isosceles trapezoid, the upper side of the trapezoid structure is provided with a long deep groove, the inside of the long deep groove is filled with a polystyrene board, and the left and right sides of the long deep groove are provided with three sets of long grooves.

[0006] Furthermore, the water-stop pad is made of rubber, and the lower side of the water-stop pad is provided with six sets of protrusions, with three sets of protrusions symmetrically distributed on the left and right sides. The protrusions on the lower side of the water-stop pad are embedded in the long grooves of the bottom concrete layer.

[0007] Furthermore, the front side of the polystyrene board is provided with a trapezoidal protrusion structure, and the rear side of the polystyrene board is provided with a trapezoidal groove structure, with the trapezoidal protrusion structure of the rear polystyrene board embedded in the trapezoidal groove structure of the front polystyrene board.

[0008] Furthermore, the bottom waterstop is made of rubber, and the upper side of the bottom waterstop is provided with a groove. The bottom end of the polystyrene board is embedded in the groove of the bottom waterstop. The left and right sides of the bottom waterstop are provided with long strip protrusions, and the upper side of each set of protrusions is provided with three sets of protrusions.

[0009] Furthermore, the number of water-swellable sealing strips is two sets, and the water-swellable sealing strips are respectively bonded to the left and right groove walls of the U-shaped groove structure of the bottom concrete layer.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, on the one hand, the nested splicing structure formed by the trapezoidal protrusions and trapezoidal grooves between two sets of polystyrene boards allows multiple sets of polystyrene boards to be aligned front to back and spliced ​​into an integral partition structure, avoiding the staggered gaps at the front and back joints of multiple sets of polystyrene boards. The splicing structure of multiple sets of polystyrene boards is more compact, improving the water-proof performance of the polystyrene boards. On the other hand, the trapezoidal groove bottom of the concave groove in the bottom concrete layer of the base slab ensures that the water seeping into the bottom of the groove on both sides of the bottom of the bottom concrete layer of the base slab is lower than the upper part of the polystyrene board, preventing water from directly flowing into the gap between the polystyrene board and the bottom concrete layer. Then, the water-stop pads bonded to the upper part of the polystyrene board are used to seal the gap between the polystyrene board and the bottom concrete layer, achieving waterproofing of the upper part of the polystyrene board and greatly improving the advanced water-stopping performance of the post-pouring strip. Attached Figure Description

[0011] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. The drawings are provided for a better understanding of the invention and are not intended to limit the scope of this disclosure. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein: Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the rear side view of this utility model.

[0013] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0014] Figure 4 This is the utility model Figure 3 Enlarged structural diagram of part A in the middle.

[0015] Figure 5 This is the utility model Figure 3 Enlarged structural diagram of part B in the middle.

[0016] Figure 6 This is a front view cross-sectional structural diagram of this utility model.

[0017] Reference numerals: 1. Base concrete layer; 2. Subbase layer; 3. Fine aggregate concrete layer; 4. Waterproof membrane layer; 5. Water-stop pad; 6. Post-poured concrete; 7. Additional reinforcing steel; 8. Additional distribution reinforcing steel; 9. Bottom waterstop strip; 10. Polystyrene board; 11. Water-swellable waterstop strip. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] like Figures 1-6 As shown, this utility model provides an advanced waterproof structure for the post-cast strip of the base slab of an underground garage, including a cushion layer 2; a fine stone concrete layer 3 is laid on the upper side of the cushion layer 2; a rolled waterproof layer 4 is embedded inside the fine stone concrete layer 3; a base slab concrete layer 1 is poured on the upper side of the fine stone concrete layer 3; it also includes a bottom waterstop 9 and a water-swellable waterstop strip 11; the base slab concrete layer 1 is bonded to the water-swellable waterstop strip 11; additional reinforcing bars 7 are embedded inside the base slab concrete layer 1; additional distributed reinforcing bars 8 are welded to the outer side of the additional reinforcing bars 7; the fine stone concrete layer 3 is bonded to the lower side of the bottom waterstop 9; a polystyrene board 10 is placed on the upper side of the bottom waterstop 9; a waterstop pad 5 is bonded to the upper side of the polystyrene board 10; and post-cast concrete 6 is poured on the upper side of the waterstop pad 5.

[0020] In this embodiment, a U-shaped groove structure is provided at the center of the upper side of the bottom concrete layer 1. The bottom of the U-shaped groove of the bottom concrete layer 1 is an isosceles trapezoidal structure. A long deep groove is provided at the middle of the upper side of the trapezoidal structure of the bottom concrete layer 1. A polystyrene board 10 is placed inside the long deep groove of the bottom concrete layer 1. By utilizing the upward inclined slope structure of the isosceles trapezoidal structure, the long deep groove of the bottom concrete layer 1 is raised, effectively slowing down the infiltration and flow rate of water. Three sets of long grooves are provided on the left and right sides of the long deep groove of the bottom concrete layer 1.

[0021] In this embodiment, the water-stop pad 5 is made of rubber. The lower side of the water-stop pad 5 is provided with six sets of protruding strips, with three sets of protruding strips symmetrically distributed on the left and right. The protruding strips on the lower side of the water-stop pad 5 are embedded in the long groove of the bottom concrete layer 1, so that the gap between the water-stop pad 5 and the upper side of the groove bottom of the bottom concrete layer 1 forms an interlaced and tortuous path, which improves the waterproof performance of the contact surface between the water-stop pad 5 and the bottom concrete layer 1.

[0022] In this embodiment, the front side of the polystyrene board 10 is provided with a trapezoidal protrusion structure, and the rear side of the polystyrene board 10 is provided with a trapezoidal groove structure. The trapezoidal protrusion structure of the rear polystyrene board 10 is embedded in the trapezoidal groove structure of the front polystyrene board 10, so that the two sets of polystyrene boards 10 are aligned front to back and spliced ​​together, thereby making multiple sets of polystyrene boards 10 into an integrated structure with the front and back flush. This avoids the front and back cross cracks between multiple sets of polystyrene boards 10, makes the structure between multiple sets of polystyrene boards 10 more compact, and improves the water-proof performance of the polystyrene board 10.

[0023] In this embodiment, the bottom waterstop 9 is made of rubber. Utilizing the elastic properties of rubber, the bottom waterstop 9 remains tightly fitted to the contact area between the base concrete layer 3 and the base concrete layer 1 during deformation of the base concrete layer 1 and the fine aggregate concrete layer 3, ensuring the sealing and waterproofing of the base concrete layer 3 and the base concrete layer 1. The upper side of the bottom waterstop 9 is provided with a groove, and the bottom end of the polystyrene board 10 is embedded in the groove of the bottom waterstop 9, providing vertical support for the polystyrene board 10. The left and right sides of the bottom waterstop 9 are provided with long convex plates, and the upper side of each set of convex plates is provided with three sets of convex strips, so that the contact gap between the bottom waterstop 9 and the base concrete layer 1 forms an interlaced and tortuous path, increasing the length of the water seepage path and slowing down the water seepage rate.

[0024] In this embodiment, there are two sets of water-swellable waterstop strips 11. The water-swellable waterstop strips 11 are respectively bonded to the left and right walls of the U-shaped groove structure of the bottom concrete layer 1. When water seeps in through the gap between the bottom concrete layer 1 and the post-cast concrete 6, the water comes into contact with and wets the water-swellable waterstop strips 11. The water-swellable waterstop strips 11 continuously absorb water and increase their volume, effectively blocking the water from seeping in through the gap between the bottom concrete layer 1 and the post-cast concrete 6.

[0025] The specific usage and function of this embodiment are as follows: In this invention, during the pre-construction of the post-pouring strip for waterproofing, the bottom waterstop 9 is first bonded to the upper side of the fine aggregate concrete layer 3 with sealant. Then, multiple sets of polystyrene boards 10 are sequentially inserted into the grooves of the bottom waterstop 9 from front to back. At this time, the trapezoidal protrusion of the rear polystyrene board 10 is inserted into the trapezoidal groove of the front polystyrene board 10. The trapezoidal protrusion of the rear polystyrene board 10 and the trapezoidal groove of the front polystyrene board 10 form a locking structure, making the multiple sets of polystyrene boards 10 form a horizontally aligned whole, preventing the multiple sets of polystyrene boards 10 from separating or intersecting and forming gaps. Then, the fine aggregate... A base concrete layer 1 is poured on top of concrete layer 3, and a U-shaped groove is reserved in concrete layer 1 for the subsequent pouring of concrete 6. After the base concrete layer 1 has completely solidified, water-swellable sealing strips 11 are bonded to both sides of the groove in the base concrete layer 1. Then, the subsequent pouring of concrete 6 is injected into the U-shaped groove in the base concrete layer 1. The weight of the subsequent pouring of concrete 6 compresses the water-stop pad 5. The protrusion on the lower side of the water-stop pad 5 is tightly attached to the long groove on the upper side of the groove bottom of the base concrete layer 1, thus completing the waterproof sealing of the gap between the polystyrene board 10 and the top of the base concrete layer 1.

[0026] All the above components are installed, connected, or set up using common mechanical methods, such as welding, threaded connections, and screw connections. Furthermore, the specific structure, model, and coefficient indicators of all components are based on their own technology; any method that achieves the desired effect can be implemented. The additional reinforcing bars 7 and 8 mentioned above are common commercially available components. When purchasing and using them, simply connect them according to the instruction manual purchased with the product; therefore, further details are omitted here.

[0027] The technical solution of this utility model is not limited to the scope of the embodiments of this utility model. All technical contents not described in detail in this utility model are known technologies.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A pre-waterproofing structure for the post-cast strip of an underground garage floor slab, comprising a subbase (2); a fine aggregate concrete layer (3) is laid on the upper side of the subbase (2); a rolled waterproofing layer (4) is embedded inside the fine aggregate concrete layer (3); and a floor slab concrete layer (1) is poured on the upper side of the fine aggregate concrete layer (3); characterized in that: It also includes a bottom waterstop (9); the bottom concrete layer (1) is bonded to a water-swellable waterstop strip (11), and additional reinforcing bars (7) are embedded inside the bottom concrete layer (1), and additional distribution reinforcing bars (8) are welded to the outer side of the additional reinforcing bars (7); a fine stone concrete layer (3) is bonded to the lower side of the bottom waterstop (9), a polystyrene board (10) is placed on the upper side of the bottom waterstop (9), a waterstop pad (5) is bonded to the upper side of the polystyrene board (10), and post-cast concrete (6) is poured on the upper side of the waterstop pad (5).

2. The pre-waterproofing structure for the post-cast strip of the underground garage floor slab as described in claim 1, characterized in that: The upper side of the bottom concrete layer (1) is provided with a U-shaped groove structure that runs through the front and back. The bottom of the U-shaped groove of the bottom concrete layer (1) is an isosceles trapezoidal structure. The upper side of the trapezoidal structure of the bottom concrete layer (1) is provided with a long deep groove. Polystyrene board (10) is placed inside the long deep groove of the bottom concrete layer (1). There are three sets of long grooves on the left and right sides of the long deep groove of the bottom concrete layer (1).

3. The pre-waterproofing structure for the post-cast strip of the underground garage floor slab as described in claim 1, characterized in that: The water-stop pad (5) is made of rubber. The lower side of the water-stop pad (5) is provided with six sets of protrusions, with three sets of protrusions symmetrically distributed on the left and right. The protrusions on the lower side of the water-stop pad (5) are embedded in the long groove of the bottom concrete layer (1).

4. The pre-waterproofing structure for the post-cast strip of the underground garage floor slab as described in claim 1, characterized in that: The front side of the polystyrene board (10) is provided with a trapezoidal protrusion structure, and the rear side of the polystyrene board (10) is provided with a trapezoidal groove structure. The trapezoidal protrusion structure of the rear polystyrene board (10) is embedded in the trapezoidal groove structure of the front polystyrene board (10).

5. The pre-waterproofing structure for the post-cast strip of the underground garage floor slab as described in claim 1, characterized in that: The bottom waterstop (9) is made of rubber. The upper side of the bottom waterstop (9) is provided with a groove. The bottom end of the polystyrene board (10) is embedded in the groove of the bottom waterstop (9). The left and right sides of the bottom waterstop (9) are provided with long strip protrusions. The upper side of each set of protrusions is provided with three sets of protrusions.

6. The pre-waterproofing structure for the post-cast strip of the underground garage floor slab as described in claim 1, characterized in that: The number of water-swellable sealing strips (11) is two sets, and the water-swellable sealing strips (11) are respectively bonded to the left and right groove walls of the U-shaped groove structure of the bottom concrete layer (1).

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