Waterproof structure of building basement roof post-cast strip and construction method of waterproof structure

Abstract

The waterproof structure of the building basement roof post-cast strip comprises the post-cast strip, the outer edge of the side, close to a post-cast seam, of the top of each basement roof is turned upwards to form a flange, the opposite side faces of the two basement roofs are arranged obliquely downwards, and the top of the post-cast strip is flush with the top of the flange; one side of the water stop steel plate is buried in the post-cast strip, and the other side of the water stop steel plate is buried in the side face of the basement top plate; the water swelling strip is embedded in the construction joint between the flange and the post-cast strip; the water-stop belt is used for blocking the construction joint, and the two opposite sides of the water-stop belt are in lap joint with the flange and the post-cast strip correspondingly; the additional waterproof layer is laid on the post-cast strip and the flanges, and the two opposite sides of the additional waterproof layer extend to the top of the basement top plate; the top plate waterproof layer is laid on the additional waterproof layer; and the concrete protection layer is poured on the top plate waterproof layer. The waterproof construction method solves the problem that the leakage probability of an existing waterproof construction method for the basement roof post-cast strip is high.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a waterproof structure of a post-cast strip of a building basement top slab and a construction method thereof. Background Art

[0002] Building waterproofing has always been valued in the industry, especially the waterproofing of building basement roofs, which is prone to leakage, difficult to manage, has strong user attention, and high maintenance costs. The location of the post-cast strip of the building basement roof is also a common potential leakage point. The existing waterproofing construction method of the post-cast strip of the basement roof has a high probability of leakage. Summary of the invention

[0003] In order to overcome the defects of the prior art, a waterproof structure of a post-cast strip of a building basement top slab and a construction method thereof are provided to solve the problem of a high probability of leakage in the existing waterproof construction method of the post-cast strip of the basement top slab.

[0004] In order to achieve the above object, a waterproof structure of a post-cast strip of a building basement top slab is provided, comprising:

[0005] A post-cast strip, a post-cast joint is formed between two adjacent basement roof slabs, the outer edge of one side of the top of the basement roof slab close to the post-cast joint is turned up to form a flange, the opposite side surfaces of the two basement roof slabs are arranged obliquely downward toward the inner side of the post-cast joint, concrete is poured in the post-cast joint to solidify to form the post-cast strip, and the top of the post-cast strip is flush with the top of the flange;

[0006] A water-stop steel plate, one side of which is buried in the post-cast strip, and the other side of which is buried in the side surface of the basement roof;

[0007] A water-swelling water stop strip embedded in the construction joint between the flange and the post-casting strip;

[0008] A water stop strip for sealing the construction joint, wherein opposite sides of the water stop strip are overlapped with the flange and the post-cast strip respectively;

[0009] An additional waterproof layer is laid on the post-cast strip and the flange, and opposite sides of the additional waterproof layer extend to the top of the basement roof;

[0010] A top plate waterproof layer, laid on the additional waterproof layer;

[0011] The concrete protective layer is poured on the top slab waterproof layer.

[0012] Furthermore, the inclination of the side of the basement roof is 15°.

[0013] Furthermore, the waterstop steel plate is a stainless steel waterstop plate.

[0014] Furthermore, the waterstop is a rubber externally attached waterstop.

[0015] Furthermore, the strength of the concrete is higher than the strength of the concrete of the basement top slab.

[0016] Furthermore, the thickness of the flange is 50 mm.

[0017] The present invention provides a construction method for a waterproof structure of a post-cast strip of a building basement top slab, comprising the following steps:

[0018] Casting the basement top slab so that a post-cast joint is formed between two adjacent basement top slabs, the outer edge of one side of the top of the basement top slab close to the post-cast joint is turned up to form a flange, and the opposite side surfaces of the two basement top slabs are arranged obliquely downward toward the inner side of the post-cast joint. While casting the basement top slab, the other side of the water-stop steel plate is buried in the side surface of the basement top slab so that one side of the water-stop steel plate extends into the post-cast joint;

[0019] Pouring concrete in the post-cast joint to solidify and form a post-cast strip, so that the top of the post-cast strip is flush with the top of the flange;

[0020] Embedding a water-expandable waterstop strip in the construction joint between the flange and the post-casting strip;

[0021] Overlapping the opposite sides of the water stop strip to the flange and the post-cast strip respectively to seal the construction joint;

[0022] Laying an additional waterproof layer on the post-cast strip and the flange, with opposite sides of the additional waterproof layer extending to the top of the basement roof;

[0023] Laying a top plate waterproof layer on the additional waterproof layer;

[0024] A concrete protective layer is poured on the top slab waterproof layer.

[0025] The beneficial effects of the present invention are that the waterproof structure of the post-cast strip of the building basement roof slab of the present invention is provided with a post-cast joint on the basement roof slab, and the side of the basement roof slab is inclined to increase the path of water, and the cross-section of the post-cast strip subsequently cast is in an inverted trapezoidal shape, which improves the bonding strength between the post-cast strip and the basement roof slab. The post-cast concrete at the post-cast strip of the waterproof structure of the post-cast strip of the building basement roof slab of the present invention is thickened, so that the post-cast strip is slightly raised, and water is easier to flow to both sides under the action of gravity, which increases the path of water and improves the impermeability. The waterproof structure of the post-cast strip of the building basement roof slab of the present invention is provided with an additional waterproof layer, and extends outward by not less than 300mm, thereby enhancing the waterproof reliability. The waterproof structure of the post-cast strip of the building basement roof slab of the present invention adopts expansive concrete with a higher strength grade to reduce the construction gap. The waterproof structure of the post-cast strip of the building basement roof slab of the present invention uses a rubber waterstop and an expansive waterstop strip to enhance the waterproof reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 It is a schematic structural diagram of the waterproof structure of the post-cast strip of the building basement top slab according to an embodiment of the present invention.

[0028] Figure 2 It is a partially enlarged schematic diagram of the waterproof structure of the post-cast strip of the building basement top slab according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] Reference Figure 1 to Figure 2 As shown, the present invention provides a waterproof structure of a post-cast strip of a building basement top slab, comprising: a post-cast strip 1, a water-stop steel plate 2, a water-swelling water-stop strip 3, a water-stop strip 4, an additional waterproof layer 5, a top slab waterproof layer 6 and a concrete protective layer 7.

[0032] In this embodiment, the basement roof structure includes a basement roof and a post-cast strip. Specifically, the basement roof is cast first, and a post-cast joint is formed between two adjacent basement roofs 8. The outer edge of one side of the top of the basement roof 8 near the post-cast joint is turned up to form a flange 81.

[0033] As a preferred embodiment, the thickness of the flange 81 is 50 mm.

[0034] The opposite side surfaces of the two basement top plates 8 are arranged obliquely downward toward the inner side of the post-cast joint.

[0035] As a preferred embodiment, the inclination of the side of the basement top plate 8 is 15°. In this embodiment, the width of the post-cast joint gradually increases from bottom to top. The cross section of the entire post-cast joint is an inverted isosceles trapezoid.

[0036] Concrete is poured in the post-cast joint to solidify and form a post-cast strip 1. The top of the post-cast strip 1 is flush with the top of the flange 81.

[0037] As a preferred embodiment, the strength of the concrete is higher than the strength of the concrete of the basement top slab 8. In this embodiment, the concrete is expansive concrete.

[0038] One side of the water stop steel plate 2 is buried in the post-cast strip 1. The other side of the water stop steel plate 2 is buried in the side surface of the basement ceiling 8.

[0039] As a preferred embodiment, the waterstop steel plate 2 is a stainless steel waterstop plate.

[0040] The water-swellable waterstop strip 3 is embedded in the construction joint between the flange 81 and the post-casting strip 1 .

[0041] The opposite sides of the water stop strip 4 are overlapped with the flange 81 and the post-casting strip 1. The water stop strip 4 is used to block the construction joint.

[0042] As a preferred embodiment, the waterstop 4 is a rubber external waterstop.

[0043] The additional waterproof layer 5 is laid on the post-cast strip 1 and the flange 81. The opposite sides of the additional waterproof layer 5 extend to the top of the basement top plate 8.

[0044] As a preferred implementation, the additional waterproof layer uses common waterproof materials such as asphalt non-curing waterproof membrane, extending outward by no less than 300 mm.

[0045] The top plate waterproof layer 6 is laid on the additional waterproof layer 5 .

[0046] In this embodiment, the top slab waterproof layer 6 is a two-layer waterproof roll material layer laid on the top slab of the basement.

[0047] The concrete protective layer 7 is poured on the top slab waterproof layer 6 .

[0048] In this embodiment, a 50 mm thick fine stone concrete protective layer is provided on the top plate waterproof layer 6.

[0049] The present invention provides a construction method for a waterproof structure of a post-cast strip of a building basement top slab, comprising the following steps:

[0050] S1. Cast the basement top slab 8 so that a post-cast joint is formed between two adjacent basement top slabs 8. The outer edge of one side of the top of the basement top slab 8 close to the post-cast joint is turned up to form a flange 81. The opposite side surfaces of the two basement top slabs 8 are arranged obliquely downward toward the inner side of the post-cast joint. While casting the basement top slab 8, the other side of the waterstop steel plate 2 is buried in the side surface of the basement top slab 8 so that one side of the waterstop steel plate 2 extends into the post-cast joint.

[0051] S2. Pour concrete into the post-cast joint to solidify and form a post-cast strip 1 , so that the top of the post-cast strip 1 is flush with the top of the flange 81 .

[0052] S3, embedding the water-swellable waterstop strip 3 in the construction joint between the flange 81 and the post-casting strip 1.

[0053] S4. Overlap the opposite sides of the water stop strip 4 on the flange 81 and the post-cast strip 1 to seal the construction joint.

[0054] S5. An additional waterproof layer 5 is laid on the post-cast strip 1 and the flange 81 , and opposite sides of the additional waterproof layer 5 extend to the top of the basement roof 8 .

[0055] S6. Lay the top plate waterproof layer 6 on the additional waterproof layer 5.

[0056] S7, pouring a concrete protective layer 7 on the top plate waterproof layer 6.

[0057] In this embodiment, the cross section of the first poured concrete (i.e., the basement top slab) at the post-cast zone is inclined 15 degrees to both sides, so that the cross section of the post-cast concrete is an inverted trapezoid.

[0058] Before waterproofing the basement roof, clean the basement roof and pour the post-cast strip concrete of the basement roof. The post-cast strip concrete uses an expansive concrete with a higher strength grade than the pre-cast structure. The post-cast strip concrete is 50mm thicker. The post-cast strip of the basement roof has an additional waterproof layer compared to the general roof. Common waterproof materials such as asphalt non-curing waterproofing membranes can be used, extending outward by no less than 300mm. The upper side of the additional waterproof layer is a two-layer waterproofing membrane that is laid throughout the roof. The two layers of waterproofing membranes are protected by a 50mm thick fine stone concrete protective layer. Rubber external waterstops and expansive waterstops are set at the starting points of the construction joints on both sides. A waterstop stainless steel plate with a thickness greater than 3mm and a width greater than 300mm is set at the 1 / 2 thickness of the roof construction joint from the outside to the inside, and it opens outward.

[0059] The waterproof structure of the post-cast strip of the building basement roof slab of the present invention is characterized in that a post-cast joint is arranged on the basement roof slab, and the side of the basement roof slab is inclined at 15 degrees to increase the water path, and the cross-section of the post-cast strip subsequently cast is in an inverted trapezoidal shape, thereby improving the bonding strength between the post-cast strip and the basement roof slab.

[0060] The waterproof structure of the post-cast strip of the building basement top plate of the present invention adopts a water-stopping stainless steel plate, thereby reducing the rust removal process time of the water-stopping steel plate before pouring.

[0061] The waterproof structure of the post-cast strip of the building basement top slab of the present invention is provided with an additional waterproof layer, and extends outward by not less than 300 mm, thereby enhancing the waterproof reliability.

[0062] The waterproof structure of the post-cast strip of the building basement top slab of the present invention adopts expansion concrete with a higher strength grade, so that the construction gap is reduced.

[0063] The waterproof structure of the post-cast strip of the building basement top slab of the present invention uses a rubber water stop strip and an expansion water stop strip to enhance the waterproof reliability.

[0064] The post-cast concrete at the post-cast strip of the waterproof structure of the post-cast strip of the building basement top plate of the present invention is thickened, so that the post-cast strip is slightly raised, and water flows more easily to both sides under the action of gravity, thereby increasing the water path.

[0065] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A waterproof structure of a post-cast strip of a building basement roof, characterized in that: include: A post-cast strip, a post-cast joint is formed between two adjacent basement roof slabs, the outer edge of one side of the top of the basement roof slab close to the post-cast joint is turned up to form a flange, the opposite side surfaces of the two basement roof slabs are arranged obliquely downward toward the inner side of the post-cast joint, concrete is poured in the post-cast joint to solidify to form the post-cast strip, and the top of the post-cast strip is flush with the top of the flange; A water-stop steel plate, one side of which is buried in the post-cast strip, and the other side of which is buried in the side surface of the basement roof; A water-swelling water stop strip embedded in the construction joint between the flange and the post-casting strip; A water stop strip for sealing the construction joint, wherein opposite sides of the water stop strip are overlapped with the flange and the post-cast strip respectively; An additional waterproof layer is laid on the post-cast strip and the flange, and opposite sides of the additional waterproof layer extend to the top of the basement roof; A top plate waterproof layer, laid on the additional waterproof layer; The concrete protective layer is poured on the top slab waterproof layer.

2. The waterproof structure of the post-cast strip of the building basement top slab according to claim 1 is characterized in that: The inclination of the side of the basement roof is 15°.

3. The waterproof structure of the post-cast strip of the building basement top slab according to claim 1 is characterized in that: The waterstop steel plate is a stainless steel waterstop plate.

4. The waterproof structure of the post-cast strip of the building basement top slab according to claim 1 is characterized in that: The waterstop is a rubber externally attached waterstop.

5. The waterproof structure of the post-cast strip of the building basement top slab according to claim 1 is characterized in that: The strength of the concrete is higher than the strength of the concrete of the basement ceiling.

6. The waterproof structure of the post-cast strip of the building basement top slab according to claim 1 is characterized in that: The thickness of the flange is 50 mm.

7. A construction method for a waterproof structure of a post-cast strip of a building basement top slab as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Casting the basement top slab so that a post-cast joint is formed between two adjacent basement top slabs, the outer edge of one side of the top of the basement top slab close to the post-cast joint is turned up to form a flange, and the opposite side surfaces of the two basement top slabs are arranged obliquely downward toward the inner side of the post-cast joint. While casting the basement top slab, the other side of the water-stop steel plate is buried in the side surface of the basement top slab so that one side of the water-stop steel plate extends into the post-cast joint; Pouring concrete in the post-cast joint to solidify and form a post-cast strip, so that the top of the post-cast strip is flush with the top of the flange; Embedding a water-expandable waterstop strip in the construction joint between the flange and the post-casting strip; Overlapping the opposite sides of the water stop strip to the flange and the post-cast strip respectively to seal the construction joint; Laying an additional waterproof layer on the post-cast strip and the flange, with opposite sides of the additional waterproof layer extending to the top of the basement roof; Laying a top plate waterproof layer on the additional waterproof layer; A concrete protective layer is poured on the top slab waterproof layer.

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