A kind of waterproof structure for super-thick bottom plate stepwise layering pouring

Abstract

The utility model relates to a waterproof structure belongs to building construction technical field, specifically a kind of for super-thick bottom plate stepped layered pouring waterproof structure;In the utility model, through the stepped concrete bottom plate joint surface and triple waterproof component synergistic effect, significantly improve the impermeability of super-thick bottom plate, utilize waterproof layer whole covering concrete cushion and extend to ladder root, form foundation sealing barrier, block groundwater permeation path, utilize three water-stop steel plate respectively in water side, backwater side and ladder variable height position, through rigid physical interception dispersed water pressure, overcome traditional single steel plate impermeability insufficient defect, utilize expansion waterstop pre-compression embedded top layer groove, after concrete shrinkage expansion caulking, realize dynamic sealing, the design is aimed at high water pressure environment, utilize ladder structure to prolong water permeation path, combine rigid-flexible multi-level defense line, completely solve layered interface leakage risk.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically a waterproof structure for stepped layered pouring of ultra-thick base slabs. Background Technology

[0002] Current methods for constructing ultra-thick base slabs mostly involve one-time casting or ordinary horizontal construction joints, which present the following problems:

[0003] 1. One-time casting is prone to temperature cracks;

[0004] 2. Traditional construction joints only have water-stop steel plates, which is insufficient for the seepage prevention treatment of the layered interface;

[0005] 3. High risk of leakage under high water pressure environment.

[0006] Based on this, this utility model proposes a stepped, layered waterproofing structure for ultra-thick base plates. Utility Model Content

[0007] To address the aforementioned technical problems, this utility model proposes a stepped, layered waterproofing structure for ultra-thick foundation slabs, which facilitates the interception of construction joints in ultra-thick concrete pouring and significantly improves the impermeability of ultra-thick foundation slabs.

[0008] The technical solution to achieve the purpose of this utility model is: a waterproof structure for stepped layered pouring of ultra-thick base slabs, including a concrete cushion layer, on which a waterproof layer is laid, and further comprising;

[0009] The quick-closing steel mesh is installed on a waterproof layer. Water-stop steel plates are provided on the quick-closing steel mesh. A concrete base slab is poured on the waterproof layer. Multiple water-stop steel plates and multiple expansion water-stop strips are provided on the concrete base slab.

[0010] Preferably, the waterproof layer covers the entire surface of the concrete subbase and extends to the root of the stepped joint surface.

[0011] Preferably, the quick-closing steel mesh and the reinforcing steel frame are combined to form a concrete interception net, which is vertically set at the layer interface.

[0012] Preferably, the water-stop steel plate includes a first water-stop steel plate disposed on the water-facing side of the stepped joint surface, a second water-stop steel plate disposed on the water-repellent side of the stepped joint surface, and a third water-stop steel plate disposed at the point where the step height changes.

[0013] Preferably, the expansion sealing strip is pressed into the stepped groove before the concrete base slab is fully set, and is in a pre-compressed state during installation.

[0014] Compared with existing technologies, the significant advantages of this invention are:

[0015] In this invention, the joint surface of the stepped concrete base slab and the triple waterproofing components work together to significantly improve the impermeability of the ultra-thick base slab. The waterproofing layer covers the entire concrete cushion layer and extends to the root of the steps, forming a basic sealing barrier to block the seepage path of groundwater. Three water-stop steel plates are respectively set on the water-facing side, the water-repellent side, and the step height position. Through rigid physical interception, the water pressure is dispersed, overcoming the shortcomings of the traditional single steel plate in terms of impermeability. The expansion water-stop strip is pre-compressed and embedded in the top groove. After the concrete shrinks, it expands and fills the joint to achieve dynamic sealing. This design is designed for high water pressure environments. It uses the stepped structure to extend the seepage path and combines a multi-layered defense line with both rigidity and flexibility to completely solve the risk of leakage at the layer interface. Attached Figure Description

[0016] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the planar structure of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Concrete foundation; 2. Waterproof layer; 3. Quick-closing steel mesh; 4. Water-stop steel plate; 5. Concrete base slab; 6. Expansion waterstop strip. Detailed Implementation

[0020] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0021] This utility model provides an improved waterproof structure for stepped, layered casting of ultra-thick base slabs. The technical solution of this utility model is as follows:

[0022] like Figure 1 As shown, a stepped layered waterproofing structure for ultra-thick base slabs includes a concrete cushion layer 1, which provides a flat base surface and transfers loads. A waterproof layer 2 is laid on the concrete cushion layer 1, forming a fully enclosed waterproof membrane. The structure also includes:

[0023] The quick-closing steel mesh 3 is installed on the waterproof layer 2. Water-stop steel plates 4 are installed on the quick-closing steel mesh 3. A concrete base slab 5 is poured on the waterproof layer 2. Multiple water-stop steel plates 4 and multiple expansion water-stop strips 6 are installed on the concrete base slab 5. The expansion water-stop strips 6 will expand when exposed to water. Through the synergistic effect of the stepped concrete base slab 5 joint surface and the triple waterproof components, the seepage resistance of the ultra-thick base slab is significantly improved. This design is designed for high water pressure environments. It uses a stepped structure to extend the seepage path and combines a multi-layered defense line that combines rigidity and flexibility to completely solve the risk of leakage at the layer interface.

[0024] Furthermore, such as Figure 1 As shown, the waterproof layer 2 covers the entire surface of the concrete cushion layer 1. The waterproof layer 2 covers the entire concrete cushion layer 1 and extends to the root of the step, forming a foundation sealing barrier to block the path of groundwater infiltration.

[0025] Furthermore, such as Figure 1 As shown, the quick-closing steel mesh 3, combined with the steel reinforcement skeleton, forms a concrete interception net. The mesh surface forms an angle of 75°-90° with the horizontal plane and is vertically set at the layer interface to achieve mechanical interlocking of new and old concrete.

[0026] Furthermore, such as Figure 1 As shown, the water-stop steel plate 4 includes a first water-stop steel plate 4 set on the water-facing side of the stepped joint surface, a second water-stop steel plate 4 set on the water-repellent side of the stepped joint surface, and a third water-stop steel plate 4 set at the point where the height of the steps changes. The three water-stop steel plates 4 overcome the defects of insufficient anti-seepage of traditional single steel plates by rigidly intercepting and dispersing water pressure.

[0027] Furthermore, such as Figure 1 As shown, the expansion waterstop strip 6 is pressed into the stepped groove before the concrete base plate 5 is fully set, and it is in a pre-compressed state during installation. The expansion waterstop strip 6 is pre-compressed and embedded into the top groove, and expands to fill the gap after the concrete shrinks, thus achieving dynamic sealing.

[0028] The specific working method is as follows: First, pour a concrete foundation layer 1. After it reaches its strength, lay a bottom waterproof layer 2 on top of it. Then, at the layer interface, vertically set a concrete interception net composed of a steel skeleton and a quick-closing steel mesh 3. Pre-embed three water-stop steel plates 4 at different heights on the stepped joint surface—one each on the water-facing side, the back water-facing side, and the step height position. Next, pour the concrete foundation 5 in layers to form a continuous stepped joint surface. Before the bottom concrete sets, press the expansion water-stop strip 6 into the groove at the top of the step and keep it in a pre-compressed state. After pouring, cure the concrete foundation 5. Finally, roughen the stepped joint surface and pour the upper concrete foundation 5. The stepped waterproof structure is formed by the triple seal of the waterproof layer 2, the water-stop steel plate 4, and the expansion water-stop strip 6.

[0029] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A waterproof structure for stepped layered casting of ultra-thick base slabs, comprising a concrete cushion layer (1), characterized in that: A waterproof layer (2) is laid on the concrete cushion layer (1), and it also includes; Quick-closing steel mesh (3), the quick-closing steel mesh (3) is set on the waterproof layer (2), the quick-closing steel mesh (3) is provided with water-stop steel plate (4), the waterproof layer (2) is poured with concrete base plate (5), the concrete base plate (5) is provided with multiple water-stop steel plates (4), and the concrete base plate (5) is provided with multiple expansion water-stop strips (6).

2. The waterproof structure for stepped layered casting of ultra-thick base slabs according to claim 1, characterized in that: The waterproof layer (2) covers the entire surface of the concrete cushion layer (1) and extends to the root of the stepped joint surface.

3. The waterproof structure for stepped layered casting of ultra-thick base slabs according to claim 1, characterized in that: The quick-closing steel mesh (3) and the steel reinforcement skeleton are combined to form a concrete interception net, which is vertically set at the layer interface.

4. A waterproof structure for stepped layered casting of ultra-thick base slabs according to claim 1, characterized in that: The water-stop steel plate (4) includes a first water-stop steel plate (4) set on the water-facing side of the stepped joint surface, a second water-stop steel plate (4) set on the back side of the stepped joint surface, and a third water-stop steel plate (4) set at the point where the step height changes.

5. A waterproof structure for stepped layered casting of ultra-thick base slabs according to any one of claims 1-4, characterized in that: The expansion sealing strip (6) is pressed into the stepped groove before the concrete base plate (5) is fully set, and is in a pre-compressed state during installation.

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