Foundation raft internal and external corner waterproof system and construction method thereof

Abstract

The invention provides a foundation raft internal and external corner waterproof system and a construction method thereof, and belongs to the field of building construction. According to the technical scheme, the structure comprises a plurality of pre-laid anti-sticking plates arranged at the internal and external corner positions of a basic raft, the adjacent pre-laid anti-sticking plates are spliced, each pre-laid anti-sticking plate comprises a cement fiber plate, a waterproof roll is arranged on the inner side of each cement fiber plate, splicing rabbets are formed in the side faces of the periphery of each cement fiber plate, and the splicing rabbets are connected with the cement fiber plates. Adjacent pre-laid reverse sticking plates are spliced through splicing rabbets, and waterproof roll overlapping edges are arranged at the edge positions of the cement fiber plates. The construction method has the beneficial effects that the pre-laid anti-sticking plates are used for replacing brick tires and foundation trench plastering, the problems that the internal and external corners of the foundation pit are difficult to build and plaster falls off are solved, meanwhile, plastering construction is not needed for the internal and external corners, the situation that a plaster layer falls off and cracks is avoided, and the situation that waterproof coiled materials are torn and leaked due to the falling off and cracking is prevented.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to a foundation raft yin-yang corner waterproofing system and a construction method thereof. Background Art

[0002] Pre-laid reverse-adhesive waterproofing membrane is applied to the foundation raft floor through the wet laying method. After the concrete is poured, the bonding between the cushion layer and the bottom plate forms a complete waterproof layer. However, in the convex parts such as the corners, the concrete is prone to damage during the construction process due to insufficient bonding and density. This not only frequently causes quality problems, but also in projects with high water levels, these parts are particularly prone to bottom plate seepage and sudden surges. Summary of the invention

[0003] The purpose of the present invention is to provide a foundation raft yin and yang corner waterproofing system and its construction method, which uses pre-laid anti-adhesive plates instead of bricks and foundation pit plastering, solves the problems of difficult masonry and plaster falling off at the yin and yang corners of the foundation pit, and at the same time, no plastering is required at the yin and yang corners, thus avoiding the falling off and cracking of the plaster layer, and preventing the tearing and leakage of the waterproof membrane caused by the same.

[0004] The present invention is achieved by the following measures: A waterproof system for the inner and outer corners of a basic raft slab, characterized in that it comprises a plurality of pre-laid reverse-adhesive boards arranged at the inner and outer corners of the basic raft slab, and adjacent pre-laid reverse-adhesive boards are spliced ​​and arranged; The pre-laid reverse-adhesive board comprises a cement fiber board, a waterproof roll is arranged on the inner side of the cement fiber board, and the sides of the cement fiber board are provided with splicing tongues and grooves, and adjacent pre-laid reverse-adhesive boards are spliced ​​and arranged by the splicing tongues and grooves; The edge of the cement fiberboard is provided with a lap edge of waterproof coiled material.

[0005] The specific features of the present invention also include: The overlapping width of the waterproof membrane shall not be less than 300mm.

[0006] The construction method comprises the following steps: S1. After the base is excavated, the formwork is set up at the corners of the foundation raft slab. Several pre-laid anti-adhesive plates are used on both sides to fix them through tongue and groove. The inner side is fixed in the soil body with diagonal braces, and the outer side is anchored with T-type steel bars. The adjacent pre-laid anti-adhesive plates are spliced ​​by the splicing tongue and groove, and the overlapping edge of the waterproof membrane at the bottom of the pre-laid anti-adhesive plates is laid on the inner side of the foundation raft slab; S2. The foundation raft slab is subsequently constructed with formwork or cement fiberboard for the outer formwork; S3. After the backfill is compacted, a horizontally set pre-laid anti-adhesive board is used on the top. Several horizontally set pre-laid anti-adhesive boards are laid on the top of the inner steel bars of the foundation raft slab, and spliced ​​with the pre-laid anti-adhesive boards previously installed on the sides of the corners.

[0007] Adjacent pre-laid anti-adhesive boards retain an overlapping edge of waterproof membrane to ensure waterproofing treatment is performed between adjacent pre-laid anti-adhesive boards.

[0008] Preferably, the construction method uses the pre-laid anti-adhesive board as a template on one side of the foundation after the base is excavated; Preferably, the overlapping seams of the overlapping edges of the waterproof membrane are 100 mm.

[0009] The beneficial effects of the present invention are as follows: the present invention uses pre-laid anti-adhesive plates instead of brick bases and foundation trench plastering, which solves the problems of difficult masonry and plaster falling off at the corners of the foundation pit. At the same time, no plastering construction is required at the corners, thus avoiding the falling off and cracking of the plaster layer, and preventing the resulting tearing and leakage of the waterproof membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the pre-laid anti-adhesive board in an embodiment of the present invention.

[0011] Figure 2 It is a schematic diagram of the structure of the pre-laid anti-adhesive board splicing in an embodiment of the present invention.

[0012] Among them, the accompanying drawings are marked as: 1, cement fiber board; 101, splicing tongue and groove; 2, waterproof membrane; 201, overlapping edge of waterproof membrane. DETAILED DESCRIPTION

[0013] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0014] See also Figure 1 and 2 , a waterproof system for the inner and outer corners of a foundation raft, comprising a plurality of pre-laid anti-adhesive boards arranged at the inner and outer corners of the foundation raft, wherein adjacent pre-laid anti-adhesive boards are spliced ​​and arranged; The pre-laid anti-adhesive board includes a cement fiber board 1, a waterproof roll material 2 is arranged inside the cement fiber board 1, and a splicing groove 101 is arranged on the sides of the cement fiber board 1. Adjacent pre-laid anti-adhesive boards are spliced ​​and arranged by the splicing groove 101. The edge of the cement fiber board 1 is provided with a waterproof roll material overlap edge 201 .

[0015] The width of the overlapping edge 201 of the waterproof membrane shall not be less than 300mm.

[0016] The construction method includes the following steps: S1. After the base is excavated, the formwork is set up at the corners of the foundation raft slab. Several pre-laid anti-adhesive plates are used on both sides to fix them through tongue and groove. The inner side is fixed in the soil with diagonal braces, and the outer side is anchored with T-type steel bars. Adjacent pre-laid anti-adhesive plates are spliced ​​by splicing tongue and groove 101, and the overlapping edge 201 of the waterproof membrane at the bottom of the pre-laid anti-adhesive plate is laid on the inner side of the foundation raft slab; S2, the foundation raft is subsequently constructed with a formwork or cement fiberboard 1 for the outer formwork; S3. After the backfill is compacted, a horizontally set pre-laid anti-adhesive board is used on the top. Several horizontally set pre-laid anti-adhesive boards are laid on the top of the inner steel bars of the foundation raft slab, and spliced ​​with the pre-laid anti-adhesive boards previously installed on the sides of the corners.

[0017] Adjacent pre-laid anti-adhesive boards retain a waterproofing membrane overlap edge 201 to ensure that waterproofing is performed between adjacent pre-laid anti-adhesive boards.

[0018] Preferably, the construction method is to use the pre-laid anti-adhesive board as the template on one side of the foundation after the base is excavated; Preferably, the overlapping seam of the overlapping edge 201 of the waterproof membrane is 100 mm.

[0019] Technical features not described in the present invention can be achieved through or by adopting existing technologies and will not be described in detail here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A basic raft yin and yang corner waterproof system, characterized in that: It comprises a plurality of pre-laid anti-adhesive boards arranged at the positive and negative corners of the foundation raft slab, and adjacent pre-laid anti-adhesive boards are spliced ​​and arranged; The pre-laid reverse-adhesive board comprises a cement fiber board, a waterproof roll is arranged on the inner side of the cement fiber board, and the sides of the cement fiber board are provided with splicing tongues and grooves, and adjacent pre-laid reverse-adhesive boards are spliced ​​and arranged by the splicing tongues and grooves; The edge of the cement fiberboard is provided with a lap edge of waterproof coiled material.

2. The basic raft yin and yang corner waterproofing system according to claim 1 is characterized in that: The overlapping width of the waterproof membrane shall not be less than 300mm.

3. The basic raft yin and yang corner waterproofing system according to claim 2 is characterized in that: The construction method comprises the following steps: S1. After the base is excavated, the formwork is set up at the corners of the foundation raft slab. Several pre-laid anti-adhesive plates are used on both sides to fix them through tongue and groove. The inner side is fixed in the soil body with diagonal braces, and the outer side is anchored with T-type steel bars. The adjacent pre-laid anti-adhesive plates are spliced ​​by the splicing tongue and groove, and the overlapping edge of the waterproof membrane at the bottom of the pre-laid anti-adhesive plates is laid on the inner side of the foundation raft slab; S2. The foundation raft slab is subsequently constructed with formwork or cement fiberboard for the outer formwork; S3. After the backfill is compacted, a horizontally set pre-laid anti-adhesive board is used on the top. Several horizontally set pre-laid anti-adhesive boards are laid on the top of the inner steel bars of the foundation raft slab, and spliced ​​with the pre-laid anti-adhesive boards previously installed on the sides of the corners.

4. The basic raft yin and yang corner waterproofing system according to claim 3 is characterized in that: Adjacent pre-laid anti-adhesive boards retain an overlapping edge of waterproof membrane to ensure waterproofing treatment is performed between adjacent pre-laid anti-adhesive boards.

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