Waterproof joint at the intersection of basement roof and building outer wall

Abstract

The utility model relates to a waterproof joint at the junction of basement roof and building outer wall, which comprises, from bottom to top, a thermal insulation layer, a leveling layer, a waterproof roll material layer, a film isolation layer, a protective layer, a backfill soil layer and a paving surface layer. The waterproof roll material comprises, from bottom to top, a bottom roll material and a top roll material. The bottom of the building outer wall is provided with an end mounting groove and a cement nail. The end of the bottom roll material extends into the end mounting groove. The cement nail penetrates the end of the bottom roll material and is inserted into the end mounting groove. The end of the top roll material is attached to the building outer wall above the end mounting groove. The end of the bottom roll material covers the horizontal construction joint between the basement roof and the building outer wall, thereby waterproofing the horizontal construction joint. The cement nail improves the connection strength of the bottom roll material and the building outer wall. The end of the top roll material strengthens the waterproof effect at the horizontal construction joint.

Description

Technical Field

[0001] This utility model relates to the technical field of basement waterproofing, and in particular to a waterproof joint at the junction of the basement roof slab and the building's exterior wall. Background Technology

[0002] Modern residential communities typically require a certain amount of green space and parking spaces. Therefore, they often include underground parking garages with green belts on top. Existing technology, patent CN221941427U, describes a green belt on the roof of an underground parking garage that includes permeable brick pavement on both sides and a sunken green space in the middle. The permeable brick pavement comprises the original underground parking garage roof slab and a permeable brick layer placed on top of it. The original underground parking garage roof slab includes, from bottom to top, a waterproof reinforced concrete slab, an extruded polystyrene board insulation layer, a DS mortar leveling layer, an SBS modified bitumen waterproof membrane, a polyvinyl chloride plastic film isolation layer, and a fine stone concrete protective layer. However, the underground parking garage extends to the bottom of the building. A horizontal construction joint exists between the building's exterior wall and the underground parking garage. This horizontal construction joint is prone to water ingress and is a weak point in the waterproofing of the basement roof slab. Existing technology does not offer a better solution to this problem. Utility Model Content

[0003] The purpose of this utility model is to solve the above problems and provide a waterproof joint at the junction of the basement roof slab and the building exterior wall.

[0004] The technical solution of this utility model is as follows: a waterproof joint at the junction of a basement roof slab and a building exterior wall includes, from bottom to top, an insulation layer, a leveling layer, a waterproof membrane layer, a thin film isolation layer, a protective layer, a backfill layer, and a paving surface layer; the insulation layer is an extruded polystyrene foam board; the density of the extruded polystyrene foam board is ≥30 kg / m³. 3 The flame retardant performance is B1 grade, and the thermal conductivity is ≤0.03W / (m•K); the leveling layer is made of cement mortar; the membrane isolation layer is made of polyvinyl chloride plastic; the protective layer is made of C20 fine stone concrete that is poured, smoothed, and polished; the waterproof membrane includes a bottom layer and a top layer installed from bottom to top; the bottom of the building exterior wall is provided with end mounting grooves and cement nails; the end of the bottom layer extends into the end mounting groove, covering the horizontal construction joint between the basement roof slab and the building exterior wall, thus waterproofing the horizontal construction joint; the cement nail penetrates the end of the bottom layer and is inserted into the end mounting groove to improve the connection strength between the bottom layer and the building exterior wall; the end of the top layer is attached to the building exterior wall above the end mounting groove to enhance the waterproofing effect at the horizontal construction joint.

[0005] Preferably, the waterproof membrane further includes a reinforcing membrane; the reinforcing membrane includes an integral horizontal section and a vertical section; the horizontal section is disposed between the membrane isolation layer and the top membrane; the vertical section is disposed and attached to the outer surface of the top membrane, thereby reinforcing the membrane and improving the waterproof effect of the waterproof membrane.

[0006] Furthermore, the base layer, top layer, and reinforcing layer are all SBS modified bitumen waterproof membranes.

[0007] Furthermore, the waterproofing joint at the junction of the basement roof slab and the building exterior wall also includes a concrete apron; the apron is inclined, with its upper end abutting against the upper end of the vertical section and its lower end abutting against the pavement surface layer; the apron forms a concrete slope at the junction of the basement roof slab and the building exterior wall, which can guide rainwater away from the horizontal construction joint to prevent water from entering the horizontal construction joint.

[0008] Furthermore, the waterproofing joint at the junction of the basement roof slab and the building exterior wall also includes a sealing strip A; this sealing strip A is filled in the gap between the high end of the drainage slab and the end of the top layer of roofing membrane to prevent rainwater from entering the horizontal construction joint from the gap between the high end of the drainage slab and the end of the top layer of roofing membrane.

[0009] Furthermore, the waterproofing joint at the junction of the basement roof slab and the building exterior wall also includes vertical elastic layer A and vertical elastic layer B; vertical elastic layer A is attached to the outer wall of the vertical section; vertical elastic layer B abuts against the inner wall of the end of the bottom layer membrane; vertical elastic layer A and vertical elastic layer B can increase the waterproof membrane's ability to adapt to elastic deformation, so as to ensure that the waterproof membrane can stably perform its waterproofing function.

[0010] Furthermore, the basement roof slab includes a horizontal slab and a vertical slab; the building exterior wall is located directly above the vertical slab; the lower end of the vertical slab connects to the end of the horizontal slab; the horizontal slab is in a recessed position, and rainwater accumulates in the area above the horizontal slab; the upper part of the vertical slab is set higher than the paved surface layer, making it difficult for rainwater to enter the horizontal construction joint.

[0011] Furthermore, the upper end of the vertical elastic layer B abuts against the bottom of the building's exterior wall; the side of the vertical elastic layer is flush with the building's exterior wall, improving the waterproof membrane's ability to adapt to elastic deformation.

[0012] Preferably, the end mounting groove is filled with sealing strip B; the sealing strip B covers the end of the bottom roll material, improving the waterproof effect of the end of the bottom roll material.

[0013] Preferably, a galvanized gasket is also provided at the bottom of the building's exterior wall; the cement nail passes through the galvanized gasket and the end of the bottom layer of membrane and is inserted into the end mounting groove; the galvanized gasket increases the connection stability between the cement nail and the end of the bottom layer of membrane.

[0014] Preferably, the backfill soil layer is compacted in layers with a compaction coefficient > 0.94; the backfill soil layer is fully compacted and has strong water absorption characteristics.

[0015] The beneficial effects of this utility model are as follows: The waterproof joint at the junction of the basement roof slab and the building exterior wall of this utility model has the following advantages: (1) The bottom layer of the utility model covers the horizontal construction joint between the basement roof slab and the building exterior wall, thus waterproofing the horizontal construction joint; cement nails improve the connection strength between the bottom layer of the membrane and the building exterior wall; the top layer of the membrane strengthens the waterproofing effect at the horizontal construction joint. (2) The drainage board of this utility model forms a concrete slope at the junction of the basement roof slab and the building exterior wall, which can guide rainwater away from the horizontal construction joint to prevent water from entering the horizontal construction joint; (3) The vertical elastic layer A and vertical elastic layer B of this utility model can increase the waterproof membrane’s ability to adapt to elastic deformation, so as to ensure that the waterproof membrane can stably perform its waterproof function. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the waterproof joint at the junction of the basement roof slab and the building exterior wall of this utility model; Figure 2 yes Figure 1 A magnified view of the I-shaped image; In the diagram: 01. Basement roof slab, 011. Horizontal slab, 012. Vertical slab, 02. Building exterior wall, 021. End mounting groove, 022. Cement screw, 023. Sealing strip B, 024. Galvanized gasket, 03. Horizontal construction joint, 1. Insulation layer, 2. Leveling layer, 3. Waterproof membrane layer, 31. Bottom layer membrane, 32. Top layer membrane, 33. Reinforcing membrane, 331. Horizontal section, 332. Vertical section, 4. Membrane isolation layer, 5. Protective layer, 6. Backfill layer, 7. Pavement surface layer, 8. Drip edge, 9. Sealing strip A, 101. Vertical elastic layer A, 102. Vertical elastic layer B. Detailed Implementation

[0017] Example 1: See Figure 1-2 A waterproof joint at the junction of a basement roof slab and the building's exterior wall includes, from bottom to top, an insulation layer 1, a leveling layer 2, a waterproof membrane layer 3, a thin film isolation layer 4, a protective layer 5, a backfill layer 6, and a paving surface layer 7; the insulation layer 1 is an extruded polystyrene foam board; the density of the extruded polystyrene foam board is ≥30 kg / m³. 3The flame retardant performance is B1 grade, and the thermal conductivity is ≤0.03W / (m•K); the leveling layer 2 is made of cement mortar; the thin film isolation layer 4 is made of polyvinyl chloride plastic; the protective layer 5 is made of C20 fine stone concrete that is poured, smoothed, and polished; the waterproof membrane includes a bottom layer membrane 31 and a top layer membrane 32 arranged from bottom to top; the bottom of the building exterior wall 02 is provided with an end mounting groove 021 and cement nails; the end of the bottom layer membrane 31 extends into the end mounting groove 021, covering the horizontal construction joint 03 between the basement roof slab 01 and the building exterior wall 02, and waterproofing the horizontal construction joint 03; the cement nail penetrates the end of the bottom layer membrane 31 and inserts into the end mounting groove 021 to improve the connection strength between the bottom layer membrane 31 and the building exterior wall 02; the end of the top layer membrane 32 is attached to the building exterior wall 02 above the end mounting groove 021 to enhance the waterproofing effect at the horizontal construction joint 03.

[0018] Compared with the prior art, the bottom layer membrane 31 of this utility model covers the horizontal construction joint 03 between the basement roof slab 01 and the building exterior wall 02 at its end, thus waterproofing the horizontal construction joint 03; cement nails improve the connection strength between the bottom layer membrane 31 and the building exterior wall 02; and the top layer membrane 32 at its end enhances the waterproofing effect at the horizontal construction joint 03.

[0019] The waterproof membrane also includes a reinforcing membrane 33; the reinforcing membrane 33 includes an integral horizontal section 331 and a vertical section 332; the horizontal section 331 is disposed between the membrane isolation layer 4 and the top membrane 32; the vertical section 332 is disposed and attached to the outer surface of the top membrane 32, and the reinforcing membrane 33 improves the waterproof effect of the waterproof membrane.

[0020] The bottom layer membrane 31, the top layer membrane 32, and the reinforcing membrane 33 are all SBS modified bitumen waterproof membranes.

[0021] The waterproofing joint at the junction of the basement roof slab and the building exterior wall also includes a concrete apron 8; the apron 8 is inclined, with its upper end abutting against the upper end of the vertical section 332 and its lower end abutting against the pavement surface layer 7; the apron 8 forms a concrete slope at the junction of the basement roof slab 01 and the building exterior wall 02, which can guide rainwater away from the horizontal construction joint 03 to prevent water from entering the horizontal construction joint 03.

[0022] The waterproofing joint at the junction of the basement roof slab and the building exterior wall also includes a sealing strip A9; the sealing strip A9 is filled in the gap between the high end of the drainage slab 8 and the end of the top layer membrane 32 to prevent rainwater from entering the horizontal construction joint 03 from the gap between the high end of the drainage slab 8 and the end of the top layer membrane 32.

[0023] The waterproofing joint at the junction of the basement roof slab and the building exterior wall also includes vertical elastic layer A 101 and vertical elastic layer B 102; vertical elastic layer A 101 is attached to the outer wall of vertical section 332; vertical elastic layer B 102 abuts against the inner wall of the end of the bottom layer membrane 31; vertical elastic layer A 101 and vertical elastic layer B 102 can increase the waterproof membrane's ability to adapt to elastic deformation, so as to ensure that the waterproof membrane can stably perform its waterproofing function.

[0024] The basement roof slab 01 includes a horizontal slab 011 and a vertical slab 012; the building exterior wall 02 is located directly above the vertical slab 012; the lower end of the vertical slab 012 is connected to the end of the horizontal slab 011; the horizontal slab 011 is in a recessed position, and rainwater accumulates in the area above the horizontal slab 011; the upper end of the vertical slab 012 is set higher than the pavement surface layer 7, making it difficult for rainwater to enter the horizontal construction joint 03.

[0025] The end mounting groove 021 is filled with a sealing strip 023; the sealing strip 023 covers the end of the bottom layer roll 31, improving the waterproof effect of the end of the bottom layer roll 31.

[0026] The bottom of the building exterior wall 02 is also provided with a galvanized gasket 024; the cement nail passes through the galvanized gasket 024 and the end of the bottom layer roll 31, and is inserted into the end mounting groove 021; the galvanized gasket 024 increases the connection stability between the cement nail and the end of the bottom layer roll 31.

[0027] The protective layer 5 is reinforced with a steel mesh consisting of φ6 steel bars to increase the load-bearing capacity of the protective layer 5; the steel mesh has joints of ≤6m×6m; the joint width is 10mm; the lower part of the joint is filled with polystyrene board; the upper part of the joint is filled with sealant; the steel mesh is connected into a complete whole.

[0028] The working principle of this embodiment is as follows: The end of the bottom layer membrane 31 covers the horizontal construction joint 03 between the basement roof slab 01 and the building exterior wall 02, waterproofing the horizontal construction joint 03; cement nails increase the connection strength between the bottom layer membrane 31 and the building exterior wall 02; the end of the top layer membrane 32 strengthens the waterproofing effect at the horizontal construction joint 03; the vertical section 332 is attached to the outer surface of the top layer membrane 32, strengthening the membrane 33 and improving the waterproofing effect; the drainage board 8 forms a concrete slope at the junction of the basement roof slab 01 and the building exterior wall 02, which can guide rainwater away from the horizontal construction joint 03 to prevent water from entering the horizontal construction joint 03. Sealing strip A 9 prevents rainwater from entering the horizontal construction joint 03 from the gap between the high end of the drainage board 8 and the end of the top layer membrane 32. Vertical elastic layer A 101 and vertical elastic layer B 102 increase the waterproof membrane's ability to adapt to elastic deformation, ensuring that the waterproof membrane stably performs its waterproofing function. Sealing strip B 023 improves the waterproofing effect at the end of the bottom layer membrane 31. Galvanized gasket 024 increases the stability of the connection between the cement nail and the end of the bottom layer membrane 31. Reinforcing mesh increases the load-bearing capacity of the protective layer 5.

[0029] Example 2: Example 2 is basically the same as Example 1, and the similarities will not be repeated. The difference is that the upper end of the vertical elastic layer B102 abuts against the bottom of the building exterior wall 02; the side of the vertical elastic layer is flush with the building exterior wall 02, which improves the waterproof membrane's ability to adapt to elastic deformation.

[0030] The backfill soil layer 6 was compacted in layers, with a compaction coefficient > 0.94; the backfill soil layer 6 was fully compacted and has strong water absorption characteristics.

Claims

1. A waterproof joint at the junction of a basement roof slab and a building exterior wall, comprising, from bottom to top, an insulation layer, a leveling layer, a waterproof membrane layer, a thin film isolation layer, a protective layer, a backfill layer, and a paving surface layer; characterized in that, The waterproof membrane includes a bottom layer membrane and a top layer membrane installed from bottom to top; the bottom of the building exterior wall is provided with an end mounting groove and a cement nail; the end of the bottom layer membrane extends into the end mounting groove; the cement nail passes through the end of the bottom layer membrane and is inserted into the end mounting groove; the end of the top layer membrane is attached to the building exterior wall above the end mounting groove.

2. The waterproof joint at the junction of the basement roof slab and the building exterior wall as described in claim 1, characterized in that: The waterproof membrane also includes a reinforcing membrane; the reinforcing membrane includes an integral horizontal section and a vertical section; the horizontal section is disposed between the membrane release layer and the top membrane; the vertical section is disposed and attached to the outer surface of the top membrane.

3. The waterproof joint at the junction of the basement roof slab and the building exterior wall as described in claim 2, characterized in that: It also includes concrete drainage slabs; the drainage slabs are set at an angle, with the upper end abutting against the upper end of the vertical section and the lower end abutting against the paving surface.

4. The waterproof joint at the junction of the basement roof slab and the building exterior wall as described in claim 3, characterized in that: It also includes a sealing strip A; the sealing strip A is filled in the gap between the high end of the drainage board and the end of the top layer roll material.

5. The waterproof joint at the junction of the basement roof slab and the building exterior wall as described in claim 3, characterized in that: It also includes vertical elastic layer A and vertical elastic layer B; vertical elastic layer A is attached to the outer wall of the vertical section; vertical elastic layer B abuts against the inner wall of the end of the bottom roll material.

6. The waterproof joint at the junction of the basement roof slab and the building exterior wall as described in claim 5, characterized in that: The basement roof slab consists of a horizontal slab and a vertical slab; the building's exterior walls are positioned directly above the vertical slab; the lower end of the vertical slab connects to the end of the horizontal slab; and the upper end of the vertical slab is positioned above the paved surface layer.

7. The waterproof joint at the junction of the basement roof slab and the building exterior wall as described in claim 6, characterized in that: The upper end of the vertical elastic layer B abuts against the bottom of the building's exterior wall; the side of the vertical elastic layer is flush with the building's exterior wall.

8. The waterproof joint at the junction of the basement roof slab and the building exterior wall as described in claim 1, characterized in that: The end mounting groove is filled with sealing strip B; sealing strip B covers the end of the underlying roll material.

9. The waterproof joint at the junction of the basement roof slab and the building exterior wall as described in claim 1, characterized in that: The bottom of the building's exterior wall is also equipped with galvanized gaskets; cement nails pass through the galvanized gaskets and the end of the bottom roll material and are inserted into the end installation groove.

10. The waterproof joint at the junction of the basement roof slab and the building exterior wall as described in claim 1, characterized in that: The backfill soil layer is compacted in layers, with a compaction coefficient > 0.94.

Images