Waterproof structure for junction of inverted roof and wall
By designing the connection and fixing of modified asphalt waterproof coil layer and steel mesh cement mortar layer at the junction of inverted roof and wall, the waterproofing problem at the junction of inverted roof and wall is solved, and effective waterproofing effect is achieved, especially in temperature changes and waterproofing performance at the separation joints.
Patent Information
- Application Number
- CN202422272521.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The waterproofing treatment at the junction of inverted roofs and walls is difficult and water leakage is prone to occur, and the existing technology has not effectively solved it.
A waterproof structure at the junction of the inverted roof and the wall is designed, including the specific hierarchy of the roof floor and the roof exterior wall. Materials such as modified asphalt waterproof coil layer, steel wire mesh cement mortar layer and other materials are used, and the waterproof layer is connected and fixed by turning and fixing nails, especially the design and sealing of additional waterproof layers at the junction of the roof and the wall and the daughter wall.
It effectively solves the waterproofing problem at the junction of the inverted roof and the wall, ensures the connection and fixation of the waterproof layer and the protective layer, and improves the waterproofing effect, especially the deformation when temperature changes and the waterproof performance at the partition joints.
Smart Images
Figure CN223151513U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction, in particular to a waterproof structure at the junction of an inverted roof and a wall. Background Technique
[0002] An inverted roof, also known as an inverted insulation roof, is a roof with a hydrophobic insulation material arranged on the waterproof layer. Its structural layers from top to bottom are the insulation layer, the waterproof layer, and the structural layer. This kind of roof uses a hydrophobic material with low hygroscopicity and strong weather resistance as the insulation layer and adds heavier covering layers such as reinforced concrete, pebbles, and bricks on the insulation layer. The inverted roof can effectively avoid the problem of water seepage in the insulation layer, prevent the damage of external factors such as ultraviolet rays and thermal expansion and contraction to the waterproof layer, extend the service life of the waterproof layer, and has high comprehensive economic benefits. However, most current buildings adopt a reinforced concrete frame structure system, and the inverted roof involves the problem of connection with the reinforced concrete exterior wall. Due to the complex local structure at the junction, the construction difficulty is relatively greater. If the waterproof treatment is not in place, water leakage is likely to occur at the junction. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a waterproof structure at the junction of an inverted roof and a wall. By designing the waterproof structure at the junction of the inverted roof and the wall, and designing the roof separation joint structure and the specific structure at the junction of the roof and the wall, effective waterproofing at the junction of the inverted roof and the wall is achieved.
[0004] To achieve the above object, the utility model provides the following technical solutions:
[0005] A waterproof structure at the junction of an inverted roof and a wall, including a roof floor and a roof exterior wall. The roof floor is provided with a reinforced concrete floor slab, a rubber asphalt waterproof coating layer, a modified asphalt waterproofing membrane layer, an extruded polystyrene board layer, and a reinforced fine stone concrete layer from bottom to top; the roof exterior wall is provided with a modified asphalt waterproofing membrane layer, a vertical protective masonry, and a wire mesh cement mortar layer from the wall to the wall surface; the modified asphalt waterproofing membrane layer arranged above the roof floor and the modified asphalt waterproofing membrane layer arranged on the outer side of the roof exterior wall are integrated and are laid up and turned from the roof to the wall surface; the vertical protective masonry is built into a slope at an angle of 15° with the vertical plane; the wire mesh in the wire mesh cement mortar layer is provided with wire mesh fixing nails, and one end of the wire mesh is fixed on the roof exterior wall and the other end is fixed on the roof floor by the wire mesh fixing nails.
[0006] Further, the rubber asphalt waterproof coating layer is a 2.0 mm thick non-curing rubber asphalt waterproof coating, and a polyester non-woven fabric carcass reinforcing layer is internally pasted at the joints.
[0007] Further, the modified bitumen waterproofing membrane layer is a 3.0 mm thick self-adhesive polymer modified bitumen waterproofing membrane, which is laid to the end of the roof exterior wall and sealed with silicone sealant I.
[0008] Further, the reinforced fine aggregate concrete layer is provided with roof division joints, and the internal steel bars are disconnected at the division joints; in the roof division joints, there are also asphalt hemp rope layers and silicone sealant II.
[0009] Further, the silicone sealant II is a weather-resistant silicone sealant with an ultimate strain of 25%, 4 - 5 mm thick, 25 mm wide, and is separated from the next layer of material by sticking tape paper below.
[0010] Further, the vertical protective masonry is 120 mm thick, and the corner between the wall and the ground is a fillet with a diameter of 100 mm.
[0011] For the waterproof structure at the intersection of the inverted roof of the present utility model and the wall, when it comes to the intersection of the roof floor and the parapet wall, there is no condition to build the vertical protective masonry into a slope, and its waterproof structure is as follows: it includes a roof floor, a frame beam, and a parapet wall. The parapet wall is provided with a drip eaves, and the drip eaves are provided with drip grooves; on the upper side and the lower side of the intersection of the frame beam and the parapet wall, there are respectively a pair of horizontal structural steel bars, and a pair of vertical anchor bars are installed on the two pairs of horizontal structural steel bars; a wire mesh cement mortar layer is arranged on the outer side of the parapet wall, and an additional waterproof layer is also arranged on the outer side of the wire mesh cement mortar layer. The additional waterproof layer extends from the roof to the outer side of the wall, and the end is embedded below the corner where the drip eaves and the parapet wall intersect, and is firmly embedded with silicone sealant III. The joint between the structure above the roof floor and the parapet wall is sealed with a sealant.
[0012] Further, in the waterproof structure at the intersection of the inverted roof and the parapet wall, the wire mesh cement mortar layer is a fillet with a diameter of 50 mm at the corner between the wall and the ground.
[0013] Compared with the prior art, the present utility model has the following beneficial effects:
[0014] 1. For the waterproof structure at the intersection of the inverted roof and the roof exterior wall, the roof floor is used for inverted waterproofing and thermal insulation, with a protective layer, the exterior wall is provided with a waterproof layer and a protective layer, and the waterproof layer and the protective layer at the intersection of the roof and the wall are integrated and fixed with a reasonable structure, which can effectively protect the waterproof materials at the intersection of the roof and the exterior wall;
[0015] 2. Additional waterproofing and protection are carried out on the roof division joints, considering both the deformation of the roof during temperature changes and the waterproof problem of the division joints;
[0016] 3. An additional waterproof layer is provided at the junction of the inverted roof and the parapet wall, and the fixation and sealing of the additional waterproof layer are specifically designed.
[0017] 4. In summary, for the waterproof structure at the junction of the inverted roof and the wall of the present utility model, in view of the architectural structures at the junctions of the roof and the exterior wall, and the roof and the parapet wall, as well as the structural characteristics of the inverted insulation roof, specific designs are made for the materials and installation methods of the waterproof layer and the protective layer, fully considering the connection and fixation of each layer of materials at the junction of the roof and the wall to ensure the waterproof effect at the junction. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure at the junction of the inverted roof and the exterior wall of the roof;
[0019] Figure 2 is Figure 1 the schematic diagram of the roof dividing joint structure in
[0020] Figure 3 It is a schematic diagram of the structure at the junction of the inverted roof and the parapet wall.
[0021] The notations in the figures are as follows: 1. Reinforced concrete floor slab; 2. Exterior wall of the roof; 3. Rubber asphalt waterproof coating layer; 4. Modified asphalt waterproofing membrane layer; 5. Extruded polystyrene board layer; 6. Reinforced fine stone concrete layer; 7. Floor tiles; 8. Vertical protective masonry; 9. Wire mesh cement mortar layer; 10. Roof dividing joint; 11. Wire mesh fixing nails; 12. Silicone sealant I; 13. Asphalt hemp rope; 14. Silicone sealant II; 15. Frame beam; 16. Parapet wall; 17. Drip edge; 18. Additional waterproof layer; 19. Horizontal structural steel plate; 20. Vertical anchoring steel bars; 21. Silicone sealant III; 22. Sealant caulking. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0023] A certain building project is a 4-story factory building above ground, with a prestressed pipe pile foundation type and a main body of a reinforced concrete frame structure system. Its roof is an inverted roof, and the waterproof structure at the junction of the roof and the wall is implemented according to the technical solution of the present utility model.
[0024] Such as Figure 1The waterproof structure at the junction of the inverted roof and the wall shown includes a roof floor and a roof exterior wall 2. The roof floor is provided with a reinforced concrete floor slab 1, a rubber asphalt waterproof coating layer 3, a modified asphalt waterproof coiled material layer 4, an extruded polystyrene board layer 5, and a reinforced fine stone concrete layer 6 from bottom to top. Floor tiles 7 are also laid above the reinforced fine stone concrete layer 6. The roof exterior wall is provided with a modified asphalt waterproof coiled material layer 4, a vertical protective masonry 8, and a wire mesh cement mortar layer 9 from the wall to the wall surface. The modified asphalt waterproof coiled material layer 4 provided above the roof floor and the modified asphalt waterproof coiled material layer 4 provided on the outer side of the roof exterior wall are integrated and are laid up and turned from the roof to the wall surface. The wire mesh in the wire mesh cement mortar layer 9 is provided with wire mesh fixing nails 11. One end of the wire mesh is fixed to the roof exterior wall 2 by the wire mesh fixing nails 11, and the other end is fixed to the roof floor 1. Specifically, the modified asphalt waterproof coiled material layer 4 is a 3.0-mm-thick self-adhesive polymer modified asphalt waterproof coiled material, and it is sealed with silicone sealant 12 at the end of the roof exterior wall. The rubber asphalt waterproof coating layer 5 is a 2.0-mm-thick non-curing rubber asphalt waterproof coating, and a polyester non-woven fabric carcass reinforcement layer is pasted inside at the joints. The vertical protective masonry 8 is 120 mm thick, and the corner at the wall and the ground is a 100-mm-diameter rounded corner. The reinforced fine stone concrete layer 6 is 30 mm thick (the thinnest part), made of C20 fine stone concrete, and is internally provided with φ4@100 steel bars.
[0025] As Figure 2 shown, the reinforced fine stone concrete layer 6 is provided with a roof dividing joint 10, and the internal steel bars are disconnected at the dividing joint. In the roof dividing joint, there is also an asphalt hemp layer 13 and silicone sealant 14. Specifically, the silicone sealant 14 is a weather-resistant silicone sealant with an ultimate strain of 25%, 4-5 mm thick, 25 mm wide, and a tape is pasted below it to separate it from the next layer of material.
[0026] As Figure 3The figure shows a schematic diagram of the structure at the intersection of an inverted roof and a parapet wall. When it comes to the intersection of the roof floor and the parapet wall, there is no condition to build the vertical protective masonry into a slope, and its waterproof structure is as follows: It includes a roof floor 1, a frame beam 15, and a parapet wall 16. The parapet wall 16 is provided with a drip eaves 17, and the drip eaves 17 is provided with a drip groove; on the upper side and the lower side of the intersection of the frame beam 15 and the parapet wall 16, a pair of horizontal structural steel bars 19 are respectively provided, and a pair of vertical anchoring steel bars 20 are installed on the two pairs of horizontal structural steel bars 19; a wire mesh cement mortar layer 9 is arranged on the outer side of the parapet wall 16, and an additional waterproof layer 18 is further provided on the outer side of the wire mesh cement mortar layer 9. The additional waterproof layer 19 extends from the roof to the outside of the wall, and the end is embedded under the corner where the drip eaves 17 intersects with the parapet wall 16, and is fastened with silicone sealant 21. The joint between the structure above the roof floor 1 and the parapet wall 16 is sealed with a sealant caulking 22. Specifically, the specification of the horizontal structural steel bar 19 is φ8, the length of the vertical anchoring steel bar 20 is ≥200mm; the width of the sealant caulking 22 is 30mm; the wire mesh cement mortar layer 9 has a fillet with a diameter of 50mm at the corner of the wall and the ground.
[0027] The inverted roof is applicable to accessible roofs or non-accessible roofs. The specific operation sequence of its roof waterproof structure is as follows: Install a reinforced concrete floor slab, and clean the surface; Lay 30mm thick (the thinnest part) C20 fine aggregate concrete, with steel bars of diameter 4mm and spacing 100mm inside, find and plaster it as it is laid, and finish it with the original mortar; Apply 2.0mm thick non-curing rubber asphalt waterproof coating, and internally paste a polyester non-woven fabric matrix reinforcement layer at the joints; Brush a layer of primer (a product compatible with the waterproof material); Apply 3.0mm thick self-adhesive polymer modified asphalt waterproofing membrane, and turn up 300mm high at the wall surface where it meets the roof; Use 45 or 100 thick (select according to different floor requirements) extruded polystyrene board with a density of 32kg / m3, which is flame-retardant treated with a fire resistance rating of B1. For the insulation layer at the intersection of the roof and the exterior wall and around the openings on the roof, set a horizontal fire separation belt with 50 wide A-class insulation material; Dry-lay a layer of polyester non-woven fabric with a weight of 200g / m2; Pour 40mm thick C25 fine aggregate concrete protective layer, with bidirectional steel bars of diameter 4mm and spacing 100mm inside, 3m * 3m, set expansion joints, and the steel bars are disconnected at the expansion joints; Smooth it with 15mm thick M20 cement mortar, and lay floor tiles.
[0028] When laying the polymer modified asphalt self-adhesive waterproofing membrane, the construction sequence of "first high then low, first far then near" should be adopted. For large-area roofs, first lay the parts farther from the material loading point, and then lay the nearer parts. For the walls intersecting with the roof, an R fillet should be set at the root of the wall.
[0029] Lay additional waterproof layers. For the bases of various facilities protruding from the roof, the roots of walls, and the internal and external corners, lay an additional layer of 4-mm-thick modified bitumen waterproof coiled material with a width of not less than 500 mm and a uniform lap joint of 250 mm on both sides. After the large-area coiled material is laid, seal the transverse and longitudinal joints of the coiled material. Bake the edges with a blowtorch to overflow continuous bitumen strips with a width of 2-3 mm.
[0030] The lap joints of the long and short sides of the waterproof coiled material are not less than 100 mm. The transverse joints of two adjacent coiled materials in the same layer are staggered by more than 1.5 m from each other. The longitudinal and transverse joints of the upper-layer coiled material and the joints of the lower-layer coiled material should be staggered by 1 / 3-1 / 2 of the width of the coiled material.
[0031] The specific operation sequence for the exterior wall paint surface is as follows: for reinforced concrete beam columns or autoclaved aerated concrete block walls, clean the walls and apply a special interface treatment agent; fully hang a Φ1, 20*20 galvanized steel wire reinforced mesh and fix it with steel nails at a spacing of 400 mm; plaster in layers with 15-mm-thick D (W) PM15 cement mortar; apply 5-mm-thick polymer cement waterproof mortar and press in alkali-resistant fiberglass mesh cloth; apply two coats of supporting exterior wall water-resistant putty and polish it smoothly; spray or roll one coat of exterior wall paint primer and two coats of topcoat.
[0032] By implementing the technical solution of the present utility model, the waterproof structure of the building project effectively solves the waterproof problem at the intersection of the inverted roof and the wall, and the effect is good.
[0033] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. An inverted roof and wall joint waterproof structure, characterized in that: It includes a roof floor and a roof outer wall. The roof floor is provided with a reinforced concrete floor slab, a rubber asphalt waterproof coating layer, a modified asphalt waterproofing membrane layer, an extruded polystyrene board layer, and a reinforced fine stone concrete layer from bottom to top; the roof outer wall is provided with a modified asphalt waterproofing membrane layer, a vertical protective masonry, and a wire mesh cement mortar layer from the wall body to the wall surface; the modified asphalt waterproofing membrane layer provided above the roof floor and the modified asphalt waterproofing membrane layer provided on the outer side of the roof outer wall are integrated and are laid up from the roof to the wall surface; the vertical protective masonry is built into a slope at an angle of 15° with the vertical plane; the wire mesh in the wire mesh cement mortar layer is provided with wire mesh fixing nails, and one end of the wire mesh is fixed to the roof outer wall and the other end is fixed to the roof floor by the wire mesh fixing nails.
2. The waterproof structure at the junction of the inverted roof and the wall according to claim 1, characterized in that: The rubber asphalt waterproof coating layer is a 2.0 mm thick non-curing rubber asphalt waterproof coating, and a polyester non-woven fabric carcass reinforcing layer is internally pasted at the joints.
3. The waterproof structure at the junction of the inverted roof and the wall according to claim 1, characterized in that: The modified asphalt waterproofing membrane layer is a 3.0 mm thick self-adhesive polymer modified asphalt waterproofing membrane, and it is sealed with silicone sealant I at the end of its laying on the roof outer wall.
4. The waterproof structure at the junction of the inverted roof and the wall according to claim 1, characterized in that: The reinforced fine stone concrete layer is provided with roof dividing joints, and the internal steel bars are disconnected at the dividing joints; in the roof dividing joints, there are also an asphalt hemp layer and silicone sealant II.
5. The waterproof structure at the junction of the inverted roof and the wall according to claim 1, characterized in that: The silicone sealant II is a weather-resistant silicone sealant, 4 - 5 mm thick and 25 mm wide, and a tape paper is pasted below it to separate it from the next layer of material.
6. The waterproof structure at the junction of the inverted roof and the wall according to claim 1, characterized in that: The vertical protective masonry is 120 mm thick, and the corner at the intersection of the wall and the ground is a fillet with a diameter of 100 mm.
7. The waterproof structure at the junction of the inverted roof and the wall according to claim 1, characterized in that: It includes a roof floor, a frame beam, and a parapet wall. The parapet wall is provided with a drip eaves, and the drip eaves are provided with drip grooves; on the upper side and the lower side respectively at the intersection of the frame beam and the parapet wall, there are a pair of horizontal structural steel bars, and a pair of vertical anchoring steel bars are installed on the two pairs of horizontal structural steel bars; a wire mesh cement mortar layer is provided on the outer side of the parapet wall, and an additional waterproof layer is also provided on the outer side of the wire mesh cement mortar layer. The additional waterproof layer extends from the roof to the outer side of the wall, and the end is embedded below the corner where the drip eaves and the parapet wall intersect, and is firmly embedded with silicone sealant III. The joint between the structure above the roof floor and the parapet wall is sealed with a sealant.
8. The waterproof structure at the junction of the inverted roof and the wall according to claim 7, characterized in that: The wire mesh cement mortar layer is a fillet with a diameter of 50 mm at the corner of the wall and the ground.