Corner-tightening waterproof structure and construction method thereof

Abstract

The invention discloses a tightening angle waterproof structure and a construction method thereof, a building main body structure comprises a basement top plate, a building base outer wall, a cantilever plate and a cantilever plate reverse ridge which are connected in sequence, and the waterproof structure comprises an internal corner waterproof additional layer, a basement top plate waterproof layer and a building base outer wall waterproof layer. The protection structure of the waterproof structure comprises a concrete waterproof protection layer, a brick wall, a concrete gap and an apron which are arranged in sequence. The waterproof effect of the basement bottom internal corner is ensured, the firmness and waterproof leakproofness of the closing opening of the cantilever plate reverse ridge side face waterproof structure are ensured, and the waterproof structures on the top face of a basement top plate, the side face of a building base outer wall, the bottom face of a cantilever plate and the lower portion of the side face of the cantilever plate reverse ridge can be completely and continuously attached, covered and protected.

Description

Technical Field

[0001] The invention relates to building waterproofing, and in particular to a corner waterproofing structure and a construction method thereof. Background Art

[0002] Corner areas are the key and difficult points in building waterproofing construction, and currently there are the following problems: 1) The waterproofing effect of the inner corner at the bottom of the basement is poor, and water leakage is prone to occur; 2) The closing height of the waterproof structure on the side of the cantilever slab counter-slope is not uniform and perfect, and it is easy for the waterproof closing to crack, resulting in waterproof failure; 3) The backfill under the cantilever slab is not solid, and a cavity will be formed after a long time, which is very likely to cause waterproof hollowing, causing the waterproof structure of the bottom surface of the cantilever slab to fail; the waterproof structure of the outer corner at the lower end of the cantilever slab counter-slope is not protected and water leakage is prone to occur; 4) There is no continuous protective structure on the top surface of the basement roof, the side of the protective building exterior wall, the bottom surface of the cantilever slab counter-slope, and the side of the cantilever slab counter-slope. Summary of the invention

[0003] The object of the present invention is to provide a corner waterproof structure and a construction method of the above-mentioned corner waterproof structure, which ensures the waterproof effect of the inner corner of the basement bottom, ensures the firmness and waterproof airtightness of the closing of the waterproof structure on the side of the cantilever plate, and can continuously fit, cover and protect the waterproof structures of the top surface of the basement roof, the side of the exterior wall of the building, the bottom surface of the cantilever plate, and the lower part of the side of the cantilever plate.

[0004] The technical solution adopted by the present invention is:

[0005] A corner waterproof structure, wherein a plaster transition is arranged at the inner corner between the basement roof and the outer wall of the building, and an inner corner waterproof additional layer is laid, a basement roof waterproof layer and a concrete waterproof protective layer are laid in sequence on the top surface of the basement roof, and an outer wall waterproof layer of the building is laid on the side of the outer wall of the building, the basement roof waterproof layer extends to the side of the outer wall of the building through the inner corner waterproof additional layer, the lower end of the outer wall waterproof layer of the building overlaps the basement roof waterproof layer, and the upper end of the outer wall waterproof layer of the building extends to the closing groove on the upper part of the side of the anti-slope of the cantilever plate through the bottom surface of the cantilever plate and is fixed by a pressure strip and a fastening nail, and is sealed by a sealing paste; the basement roof and the cantilever A brick wall is set between the slabs near the wall, a concrete caulking is set between the lower side of the cantilever slab and the backfill soil, a splash is set at the side of the cantilever slab counter-slope, the back of the brick wall fits and covers the waterproof structure of the side of the building's exterior wall, the top surface fits and covers the waterproof structure of the bottom of the cantilever slab close to the building's exterior wall, the bottom surface fits and covers the waterproof structure of the plastering transition and the top surface of the connected basement roof, the concrete caulking fits and covers the waterproof structure of the rest of the bottom surface of the cantilever slab, the splash and concrete caulking combination covers the positive corner at the lower end of the cantilever slab counter-slope, and the splash fits and covers the waterproof structure at the lower part of the side of the cantilever slab counter-slope.

[0006] Preferably, the basement roof waterproofing layer adopts a non-curing asphalt waterproof coating layer and an SBS asphalt pre-laid reverse-adhesive waterproof membrane laid in sequence, and the building exterior wall waterproofing layer adopts a water-based anti-skid waterproof coating layer and an SBS asphalt self-adhesive waterproof membrane laid in sequence, and the non-curing asphalt waterproof coating layer and the SBS asphalt pre-laid reverse-adhesive waterproof membrane are both extended to the side of the building exterior wall through the internal corner waterproof additional layer, and the lower ends of the anti-skid waterproof coating layer and the SBS asphalt self-adhesive waterproof membrane are overlapped on the non-curing asphalt waterproof coating layer and the SBS asphalt pre-laid reverse-adhesive waterproof membrane, respectively.

[0007] Preferably, the additional layer for internal corner waterproofing adopts a non-curing asphalt waterproof coating layer and a SBS asphalt pre-laid reverse-adhesive waterproofing membrane which are laid in sequence.

[0008] Preferably, fine stone concrete is used for the plaster transition.

[0009] Preferably, a steel mesh is built into the concrete waterproof protective layer, and slits are arranged at intervals in the concrete waterproof protective layer.

[0010] Preferably, the pressure strips are made of aluminum alloy and are distributed at intervals.

[0011] Preferably, the water dispersion is supported on a water dispersion foundation.

[0012] The construction method of the above-mentioned corner waterproof structure is to first cast the basement roof, the exterior wall of the building on the first floor, the cantilever slab and the cantilever slab anti-slope, reserve a closing groove on the upper part of the side of the cantilever slab anti-slope, and then clean the base layer and the closing groove; then set a plastering transition at the inner corner between the basement roof and the exterior wall of the building; then construct the inner corner waterproof additional layer, the inner corner waterproof additional layer covers the plastering transition area and the connected basement roof and building exterior wall; then construct the basement roof waterproof layer, the basement roof waterproof layer extends to the side of the building exterior wall through the inner corner waterproof additional layer; then conduct a closed water test on the basement; then lay a concrete waterproof protective layer on the top surface of the basement roof; then construct the building exterior wall waterproof layer, so that the lower end of the building exterior wall waterproof layer overlaps the basement roof waterproof layer; then make the upper end of the building exterior wall waterproof layer extend through the bottom surface of the cantilever slab to the closing of the upper part of the side of the anti-slope of the cantilever slab. The groove is first fixed by a pressure strip and fasteners, and then sealed by sealing paste; then a brick wall is built between the basement roof and the cantilever plate near the wall, so that the back of the brick wall fits and covers the waterproof structure of the side of the outer wall of the building, the top surface fits and covers the waterproof structure of the bottom surface of the cantilever plate close to the outer wall of the building, and the bottom surface fits and covers the plastering transition and the waterproof structure of the top surface of the connected basement roof; then the backfill soil is spread and compacted in layers on the basement roof until it reaches below the bottom surface of the cantilever plate, and then concrete filling is poured, and then backfill is continued to be filled to the designed elevation, and then the groove is reversed to construct the splash foundation, and then the splash construction is carried out, so that the splash and concrete filling combination covers the positive corner of the lower end of the cantilever plate anti-slope, the concrete filling fits and covers the waterproof structure of the rest of the bottom surface of the cantilever plate, and the splash fits and covers the waterproof structure of the lower part of the side of the cantilever plate anti-slope.

[0013] Preferably, before casting the main structure, when setting up the cantilever slab anti-slope formwork, the formworks on both sides are connected by tension bolts in combination with back ribs, and a forming strip for forming a closing groove is fixed on the inner surface of one side of the formwork.

[0014] The beneficial effects of the present invention are:

[0015] The inner corner between the basement roof and the exterior wall of the building is not only provided with a plaster transition but also provided with an additional waterproof layer for the inner corner. This can not only avoid damage to the waterproof material, but also add an extra layer of waterproofing within the waterproof layer of the basement roof. Moreover, the brick wall can also fit the waterproof structure covering the plaster transition and the top surface of the connected basement roof, thus ensuring the waterproof effect of the inner corner at the bottom of the basement. The closing of the waterproof structure on the side of the cantilever slab counter-peak adopts a combination of closing grooves, pressure strips, fasteners and sealing paste to ensure the firmness and waterproof tightness of the closing, avoid cracking of the waterproof closing, and reduce the occurrence of corner leakage risks. Concrete filling can fill the gap between the underside of the cantilever slab and the return The cavity between the backfill soil not only solves the problem of exposed waterproof structure caused by false settlement of backfill under the cantilever slab, but also cooperates with the brick wall to cover and protect the waterproof structure on the bottom of the cantilever slab; the coordination of the scattered water and concrete filling can cover and protect the waterproof structure on the lower part of the side of the cantilever slab and the lower end of the positive corner; the concrete waterproof protective layer, brick wall, concrete filling and scattered water are arranged in sequence, and the waterproof structure of the top surface of the basement roof, the plaster transition, the side of the exterior wall of the building, the bottom surface of the cantilever slab and the lower part of the side of the cantilever slab are all continuously covered and protected, forming a continuous protection structure, thereby improving the protective performance of the waterproof structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the corner waterproof structure.

[0017] Figure 2 It is a schematic diagram of the waterproof joint at the corner.

[0018] Figure 3 It is a schematic diagram of setting up the cantilever slab anti-slope formwork.

[0019] In the figure: 1-outdoor floor; 2-non-curing asphalt waterproof coating; 3-SBS asphalt pre-laid anti-adhesive waterproof membrane; 4-concrete waterproof protective layer; 5-basement roof; 6-plastering transition; 7-additional waterproof layer for inner corners; 8-exterior wall of building; 9-water-based anti-slip waterproof coating; 10-SBS asphalt self-adhesive waterproof membrane; 11-brick wall; 12-cantilever slab; 13-cantilever slab anti-slope; 14-pressing strip; 15-backfill soil; 16-sprinkler foundation; 17-sprinkler; 18-concrete filling; 19-molding strip; 20-back rib; 21-tension bolts; 22-sealing paste. DETAILED DESCRIPTION

[0020] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Embodiment 1

[0022] This embodiment discloses a corner waterproof structure, such as Figure 1As shown, the main structure of the building includes a basement roof 5, a building exterior wall 8, a cantilevered plate 12 and a cantilevered plate anti-slope 13 connected in sequence, the waterproof structure includes a negative corner waterproof additional layer 7, a basement roof waterproof layer and a building exterior wall waterproof layer, and the protective structure of the waterproof structure includes a concrete waterproof protective layer 4, a brick wall 11, a concrete gap filling 18 and a scattered water 17. Among them:

[0023] A plastering transition 6 is arranged at the inner corner between the basement roof 5 and the building outer wall 8, and an inner corner waterproof additional layer 7 is laid on the plastering transition 6 and the connected basement roof 5 and the building outer wall 8. Figure 1 ;

[0024] The basement roof waterproof layer and the concrete waterproof protective layer 4 are laid on the top surface of the basement roof 5 in sequence, and the basement roof waterproof layer extends to the side of the building outer wall 8 through the inner corner waterproof additional layer 7. Figure 1 ;

[0025] The waterproof layer of the building's exterior wall is laid on the side of the building's exterior wall 8, and the lower end of the waterproof layer of the building's exterior wall is overlapped on the waterproof layer of the basement roof. The upper end of the waterproof layer of the building's exterior wall extends through the bottom surface of the cantilever plate 12 to the closing groove on the upper part of the side of the cantilever plate anti-ridge 13, as shown in FIG. Figure 1 In addition, the upper end of the waterproof layer of the building's exterior wall is fixed in the closing groove by a pressure strip 14 in cooperation with a fastening nail and sealed by a sealing paste 22. Figure 2 ;

[0026] The brick wall 11 is arranged between the basement roof 5 and the cantilevered plate 12, and the back of the brick wall 11 is fitted to cover and protect the waterproof structure of the side of the building exterior wall 8, the top surface is fitted to cover and protect the waterproof structure of the bottom surface of the cantilevered plate 12 close to the building exterior wall 8, and the bottom surface is fitted to cover the plaster transition 6 and the waterproof structure of the top surface of the connected basement roof 5. Figure 1 ;

[0027] The concrete gap filling 18 is arranged between the lower side of the cantilever plate 12 and the backfill soil 15. The concrete gap filling 18 fits the waterproof structure covering and protecting the rest of the bottom surface of the cantilever plate 12. Figure 1 ;

[0028] The water splash 17 is arranged on the side of the cantilever plate anti-bank 13. The water splash 17 and the concrete gap filling 18 are combined to cover the lower positive corner of the cantilever plate anti-bank 13. The water splash 17 fits and covers the waterproof structure at the lower part of the side of the cantilever plate anti-bank 13. Figure 1 .

[0029] Regarding the arrangement of the internal corner waterproof additional layer 7, the basement roof waterproof layer and the building exterior wall waterproof layer, in this embodiment, preferably: Figure 1As shown, the basement roof waterproofing layer adopts the sequentially laid non-curing asphalt waterproofing coating layer 2 and SBS asphalt pre-laid reverse-adhesive waterproofing membrane 3, and the building exterior wall waterproofing layer adopts the sequentially laid water-based anti-slip waterproofing coating layer 9 and SBS asphalt self-adhesive waterproofing membrane 10, both of which extend to the side of the building exterior wall 8 through the internal corner waterproofing additional layer 7, and the lower ends of the anti-slip waterproofing coating layer 9 and the SBS asphalt self-adhesive waterproofing membrane 10 are overlapped on the non-curing asphalt waterproofing coating layer 2 and the SBS asphalt pre-laid reverse-adhesive waterproofing membrane 3 respectively; the internal corner waterproofing additional layer 7 adopts the sequentially laid non-curing asphalt waterproofing coating layer and SBS asphalt pre-laid reverse-adhesive waterproofing membrane. The use of a double external waterproofing system of coating waterproofing combined with membrane waterproofing ensures an overall skin-type external waterproofing system and saves construction time.

[0030] Regarding the setting of the plaster transition 6, in the present embodiment, preferably: the plaster transition 6 adopts fine stone concrete.

[0031] Regarding the setting of the concrete waterproof protective layer 4, in this embodiment, preferably: a steel mesh is built into the concrete waterproof protective layer 4, and slits are arranged at intervals in the concrete waterproof protective layer 4.

[0032] Regarding the arrangement of the pressure strips, in the present embodiment, preferably: the pressure strips 14 are made of aluminum alloy, and the pressure strips 14 are distributed at intervals.

[0033] like Figure 1 As shown, in this embodiment, preferably, the water sprinkling 17 is supported on the water sprinkling foundation 16 .

[0034] Embodiment 2

[0035] This embodiment discloses a construction method of the above-mentioned corner waterproof structure, which specifically includes the following steps:

[0036] S1) Cast the basement roof 5, the first floor building exterior wall 8, the cantilever slab 12 and the cantilever slab counter 13, and reserve a closing groove on the upper part of the side of the cantilever slab counter 13; when setting up the cantilever slab counter 13 formwork, Figure 3 As shown, the templates on both sides are connected by tension bolts 21, and a forming strip 19 for forming a closing groove is fixed on the inner surface of one side of the template. The forming strip 19 is located at a height of 300mm above the outdoor floor 1 and is 50mm high and 10mm wide. The forming strip 19 can avoid grooving after pouring, and can ensure the consistency of the height of the closing groove to avoid cracking of the waterproof membrane; after pouring is completed, the base layer of the basement roof 5, the exterior wall of the building 8, the cantilever plate 12 and the cantilever plate anti-ridge 13 are cleaned, the slurry and impurities on the concrete surface are removed, and the closing groove is cleaned.

[0037] S2) A plastering transition 6 is provided at the inner corner between the basement roof 5 and the building outer wall 8, and the plastering transition 6 is made of fine stone concrete.

[0038] S3) construct an additional waterproof layer 7 for the inner corners. The additional waterproof layer 7 for the inner corners is made of a non-curing asphalt waterproof coating layer and a SBS asphalt pre-laid anti-adhesive waterproof membrane which are laid in sequence. The non-curing asphalt waterproof coating layer is brushed with a thickness of 4mm and covers the plastering transition area and the connected basement roof 5 within a range of 250mm and the exterior wall 8 of the building within a range of 350mm. The SBS asphalt pre-laid anti-adhesive waterproof membrane is 3mm thick and covers the plastering transition 6 area and the connected basement roof 5 within a range of 250mm and the exterior wall 8 of the building within a range of 250mm.

[0039] S4) construct the basement roof waterproofing layer, the basement roof waterproofing layer adopts the non-curing asphalt waterproof coating layer 2 and the SBS asphalt pre-laid reverse-adhesive waterproofing membrane 3 which are laid in sequence, the non-curing asphalt waterproof coating layer 2 and the SBS asphalt pre-laid reverse-adhesive waterproofing membrane 3 are extended to the side of the building outer wall 8 through the inner corner waterproofing additional layer 7, the length of the non-curing asphalt waterproof coating layer 2 exceeding the SBS asphalt pre-laid reverse-adhesive waterproofing membrane 3 is 100mm.

[0040] S5) Carry out water-tightness test on the basement, especially carefully check the waterproofing between the basement top plate 5 and the building exterior wall 8 to ensure that the waterproofing material is not damaged and the overlap is firm.

[0041] S6) A concrete waterproof protective layer 4 is laid on the top surface of the basement roof 5, with a steel mesh built into the concrete waterproof protective layer 4. The concrete waterproof protective layer 4 is cut at intervals of 6m, with a width of 3mm and a depth of 1 / 3 of the thickness of the concrete waterproof protective layer 4, and water is sprinkled for maintenance until the designed strength is reached.

[0042] S7) construct the building exterior wall waterproofing layer, the building exterior wall waterproofing layer adopts the water-based anti-skid waterproof coating layer 9 and the SBS asphalt self-adhesive waterproof membrane 10 which are laid in sequence, the water-based anti-skid waterproof coating layer 9 is brushed with 2mm and the lower end is overlapped on the non-curing asphalt waterproof coating layer 2 with an overlap length of 100mm, the lower end of the SBS asphalt self-adhesive waterproof membrane 10 is overlapped on the SBS asphalt pre-laid anti-adhesive waterproof membrane 3 with an overlap length of 100mm.

[0043] S8) The upper end of the waterproof layer of the exterior wall of the building is extended through the bottom surface of the cantilever plate 12 to the closing groove on the upper side of the cantilever plate anti-slope 13 and is first fixed by the pressure strip 14 in conjunction with the fastening nails (nails), and then sealed by the sealing paste 22. The pressure strip 14 is made of aluminum alloy, the height of the pressure strip 14 is 30mm, the width is 1mm, and the pressure strips 14 are arranged at intervals of 0.5m.

[0044] S9) A 100 mm thick brick wall 11 is built between the basement roof 5 and the cantilevered plate 12, and the back of the brick wall 11 is fitted with a waterproof structure that covers and protects the side of the building exterior wall 8 (including the building exterior wall waterproofing layer in different areas, the basement roof waterproofing layer, and the additional waterproofing layer 7 for the inner corners), the top surface is fitted with a waterproof structure that covers and protects the bottom surface of the cantilevered plate 12 close to the building exterior wall 8 (the building exterior wall waterproofing layer), and the bottom surface is fitted with a waterproof structure that covers the plaster transition 6 and the top surface of the connected basement roof 5 (including the basement roof waterproofing layer and the additional waterproofing layer 7 for the inner corners).

[0045] S10) Spread and compact the backfill soil 15 on the basement roof 5 in layers until it reaches 300 mm below the bottom surface of the cantilever slab 12, pour concrete filling 18, and then continue to backfill to the designed elevation; then reverse the groove to construct the splash foundation 16, and then construct the splash 17, so that the splash 17 and the concrete filling 18 are combined to cover the lower end of the cantilever slab anti-slope 13. The concrete filling 18 fits and covers the waterproof structure (the waterproof layer of the outer wall of the building) that protects the rest of the bottom surface of the cantilever slab 12, and the splash 17 fits and covers the waterproof structure (the waterproof layer of the outer wall of the building) at the lower part of the side of the cantilever slab anti-slope 13.

[0046] According to the solutions of the above embodiment 1 and embodiment 2, in this application:

[0047] The inner corner between the basement roof 5 and the building outer wall 8 is not only provided with a plaster transition 6 but also provided with an inner corner waterproof additional layer 7, which can avoid damage to the waterproof material and add an extra waterproof layer within the waterproof layer of the basement roof. Moreover, the brick wall 11 can also fit the waterproof structure covering the plaster transition 6 and the top surface of the connected basement roof 5, thereby ensuring the waterproof effect of the inner corner at the bottom of the basement. The closing of the waterproof structure on the side of the cantilever plate anti-bank 13 adopts a combination of a closing groove, a pressure strip 14, a fastening nail and a sealing paste 22, thereby ensuring the firmness and waterproof tightness of the closing, avoiding cracking of the waterproof closing, and reducing the occurrence of corner leakage hazards. The concrete filling 18 can fill the gap between the lower side of the cantilever plate 12 and the backfill soil 15 The cavity between the two walls not only solves the problem of exposed waterproof structure caused by false backfill settlement under the cantilever plate 12, but also cooperates with the brick wall 11 to fit, cover and protect the waterproof structure on the bottom surface of the cantilever plate 12; the scattered water 17 cooperates with the concrete filling 18 to fit, cover and protect the waterproof structure on the lower part of the side of the cantilever plate anti-bank 13 and the lower end positive corner; the concrete waterproof protective layer 4, the brick wall 11, the concrete filling 18 and the scattered water 17 are arranged in sequence, and the waterproof structure on the top surface 5 of the basement roof, the plastering transition 6, the side of the building outer wall 8, the bottom surface of the cantilever plate 12, and the lower part of the side of the cantilever plate anti-bank 13 are all continuously fitted, covered and protected, forming a continuous protection structure, thereby improving the protective performance of the waterproof structure.

[0048] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A corner waterproof structure, characterized in that: A plastering transition is set at the inner corner between the basement roof and the exterior wall of the building, and an additional waterproof layer is laid at the inner corner. The basement roof waterproof layer and the concrete waterproof protective layer are laid in sequence on the top surface of the basement roof. The exterior wall waterproof layer of the building is laid on the side of the exterior wall of the building. The basement roof waterproof layer extends to the side of the exterior wall of the building through the additional waterproof layer at the inner corner. The lower end of the exterior wall waterproof layer of the building is overlapped on the basement roof waterproof layer. The upper end of the exterior wall waterproof layer of the building extends through the bottom surface of the cantilever plate to the closing groove on the upper part of the anti-slope side of the cantilever plate and is fixed by a pressure strip and a fastener, and sealed by a sealing paste; the wall between the basement roof and the cantilever plate A brick wall is set at the position, a concrete caulking is set between the lower side of the cantilever slab and the backfill soil, a splash is set at the side of the cantilever slab counter-slope, the back of the brick wall fits and covers the waterproof structure of the side of the building's outer wall, the top surface fits and covers the waterproof structure of the bottom of the cantilever slab close to the building's outer wall, the bottom surface fits and covers the waterproof structure of the plastering transition and the top surface of the connected basement roof, the concrete caulking fits and covers the waterproof structure of the rest of the bottom surface of the cantilever slab, the splash and concrete caulking combination covers the positive corner at the lower end of the cantilever slab counter-slope, and the splash fits and covers the waterproof structure at the lower part of the side of the cantilever slab counter-slope.

2. The corner waterproof structure according to claim 1, characterized in that: The basement roof waterproofing layer adopts a non-curing asphalt waterproof coating layer and a SBS asphalt pre-laid anti-adhesive waterproof membrane laid in sequence, and the building exterior wall waterproofing layer adopts a water-based anti-skid waterproof coating layer and a SBS asphalt self-adhesive waterproof membrane laid in sequence. The non-curing asphalt waterproof coating layer and the SBS asphalt pre-laid anti-adhesive waterproof membrane are extended to the side of the building exterior wall through the internal corner waterproof additional layer, and the lower ends of the anti-skid waterproof coating layer and the SBS asphalt self-adhesive waterproof membrane are overlapped on the non-curing asphalt waterproof coating layer and the SBS asphalt pre-laid anti-adhesive waterproof membrane respectively.

3. The corner waterproof structure according to claim 1, characterized in that: The additional layer for internal corner waterproofing is composed of a non-curing asphalt waterproof coating layer and a SBS asphalt pre-laid anti-adhesive waterproof membrane laid in sequence.

4. The corner waterproof structure according to claim 1, characterized in that: Fine stone concrete is used for plaster transition.

5. The corner waterproof structure according to claim 1, characterized in that: A steel mesh is built into the concrete waterproof protective layer, and slits are arranged at intervals in the concrete waterproof protective layer.

6. The corner waterproof structure according to claim 1, characterized in that: The layering strips are made of aluminum alloy and are distributed at intervals.

7. The corner waterproof structure according to claim 1, characterized in that: The water dispersion is supported on the water dispersion foundation.

8. A construction method of the corner waterproof structure according to any one of claims 1 to 7, characterized in that: First, cast the basement roof, the exterior wall of the building on the first floor, the cantilever slab and the cantilever slab anti-slope, reserve a closing groove on the upper part of the side of the cantilever slab anti-slope, and then clean the base and the closing groove; then set a plastering transition at the inner corner between the basement roof and the exterior wall of the building; then construct the inner corner waterproof additional layer, which covers the plastering transition area and the connected basement roof and building exterior wall; then construct the basement roof waterproof layer, which extends to the side of the building exterior wall through the inner corner waterproof additional layer; then conduct a closed water test on the basement; then lay a concrete waterproof protective layer on the top surface of the basement roof; then construct the building exterior wall waterproof layer, so that the lower end of the building exterior wall waterproof layer overlaps the basement roof waterproof layer; then extend the upper end of the building exterior wall waterproof layer through the bottom surface of the cantilever slab to the closing groove on the upper part of the side of the cantilever slab anti-slope, and first cover it with a pressure strip It is fixed with fasteners and then sealed with sealing paste; then a brick wall is built between the basement roof and the cantilever plate near the wall, so that the back of the brick wall fits and covers the waterproof structure of the side of the outer wall of the building, the top surface fits and covers the waterproof structure of the bottom surface of the cantilever plate close to the outer wall of the building, and the bottom surface fits and covers the plastering transition and the waterproof structure of the top surface of the connected basement roof; then the backfill soil is spread and compacted in layers on the basement roof until it reaches below the bottom surface of the cantilever plate, and then concrete filling is poured, and then backfilling is continued to the designed elevation, and then the groove is reversed to construct the splash foundation, and then the splash construction is carried out, so that the splash and concrete filling combination covers the positive corner of the lower end of the cantilever plate, the concrete filling fits and covers the waterproof structure of the rest of the bottom surface of the cantilever plate, and the splash fits and covers the waterproof structure of the lower part of the side of the cantilever plate.

9. The construction method of the corner waterproof structure according to claim 8, characterized in that: Before building the main structure, when setting up the cantilever slab anti-slope formwork, the formworks on both sides are connected by tension bolts and back ribs, and a forming strip for forming the closing groove is fixed on the inner surface of one side of the formwork.

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