Reinforcement method of sloping roof in old residential area
By using plant reinforcement and bracket support on the inclined roofs of old communities, the problems of difficulty in roof maintenance, long construction period and high construction cost are solved, and the results of low cost, short construction period and good construction quality are achieved.
Patent Information
- Application Number
- CN202310783013.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-29
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2043-06-29
AI Technical Summary
The sloping roofs in old communities are difficult to maintain, have a long construction period and are costly, especially the roofs are mostly sloping roofs, which have slip problems.
The roof is reinforced partially by using the reinforcement method, and the concrete protective layer is supported by brackets to prevent slippage and cracking. Specific steps include removing the linoleum tiles, reinforcing the waterproof layer, removing and pouring the concrete protective layer, cutting off the slippery part, installing the bracket and repairing the linoleum tiles.
It reduces the damage to the roof waterproof layer, reduces construction costs and construction period, and improves the construction quality and stability of the concrete protective layer.
Smart Images
Figure CN117145258B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a roof reinforcement technology, in particular to a method for reinforcing the sloping roof of an old residential area. Background Art
[0002] Due to years of disrepair, the waterproof protective layer of the roofs of old residential areas has been damaged. If it is not repaired in time, it is easy to cause damage to the waterproof layer, which will lead to roof leakage. Therefore, it is urgent to repair the waterproof protective layer of the roofs of old residential areas. The existing technology requires the complete removal of the waterproof protective layer of the roof, which takes a long time and is too expensive. In addition, the roofs of old residential areas are mostly sloping roofs. In addition to cracking, the sloping roofs will also slide along the inclined roofs under the action of their own gravity, which brings difficulties to the roof repair of old residential areas. Summary of the invention
[0003] The purpose of the present invention is to provide a method for reinforcing the sloping roofs of old communities, so as to solve the problems of difficult maintenance, long construction period and high cost of the existing sloping roofs in old communities.
[0004] The present invention is implemented as follows: a method for reinforcing the sloping roof of an old residential area comprises the following steps.
[0005] a. Remove the roofing felt tiles and reinforce the roof with rebar.
[0006] b. Remove the concrete protective layer around the reinforcement points at the ridge.
[0007] c. Repair the waterproof layer at the reinforcement points.
[0008] d. Remove the cracked parts of the concrete protective layer and pour and fill the removed concrete protective layer.
[0009] e. Remove the part of the concrete protective layer that has slipped out of the eaves.
[0010] f. Install the bracket at the eaves so that the bracket is in close contact with the concrete protective layer to support the concrete protective layer.
[0011] g. Repair roofing felt tiles.
[0012] In the method for reinforcing the sloping roof of an old residential area of the present invention, in step a, the location of the rebar planting is located, the rebar is planted at the ridge and the cracked or damaged parts on the roof, and after the location of the rebar planting is determined, the rebar planting holes are drilled on the roof, the steel bars are inserted into the rebar planting holes, and the rebar planting holes are filled with anchoring glue.
[0013] With regard to the method for reinforcing the sloping roofs of old residential areas of the present invention, in step c, the surface of the base layer around the reinforcement planting point is cleaned and then coated with polyurethane waterproof material.
[0014] With regard to the method for reinforcing sloping roofs in old residential areas of the present invention, in step d, 200 mm of the concrete protective layer on both sides of the cracked portion of the concrete protective layer are removed respectively to expose the steel mesh in the concrete, the steel mesh is cleaned, and a new steel mesh is installed at the crack. The new steel mesh overlaps the steel mesh in the protective layer by 200 mm and is tied securely, and then fine stone concrete is poured, smoothed, and cured to reach the standard strength.
[0015] With regard to the method for reinforcing sloping roofs in old residential areas of the present invention, in step e, a cutting machine is used to cut off the excess concrete protective layer that has slipped beyond the eaves. Before cutting, a line is drawn on the eaves to mark the cutting position, and the cutting is performed in sections, with each section not exceeding 2m.
[0016] With respect to the method for reinforcing sloping roofs in old residential areas of the present invention, in step f, the bracket is a steel plate or angle steel, and is fixed at the eaves by chemical anchor bolts so that the bracket is in close contact with the concrete protective layer, and if there are local gaps, they are filled with expansive cement.
[0017] With regard to the method for reinforcing sloping roofs in old residential areas of the present invention, in step g, the asphalt tiles are installed and repaired in layers from bottom to top along the sloping roof.
[0018] When the present invention is used to reinforce the sloping roof of an old residential area, it is not necessary to completely remove the roof waterproof layer. Instead, the roof is reinforced by using a construction method of planting reinforcement bars, and only the local cracks need to be repaired. Compared with the traditional construction method, the cost is low, the construction period is short, and the construction quality is easy to ensure. The public opinion of residents is less affected during the construction. At the same time, the concrete protective layer is supported by a bracket to prevent the concrete protective layer from slipping and cracking, so as to ensure the quality of the concrete protective layer after construction. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a structural diagram of the first type of roof ridge reinforced with embedded steel bars according to the present invention.
[0020] Figure 2 This is a structural diagram of the second type of roof ridge reinforced with embedded steel bars according to the present invention.
[0021] Figure 3 It is a structural diagram of the third type of roof ridge reinforced with embedded steel bars according to the present invention.
[0022] Figure 4 It is a construction drawing of the bracket at the cornice of the present invention.
[0023] In the figure: 1. Roof; 2. Waterproof layer; 3. Concrete protective layer; 4. Asphalt tiles; 5. Steel bars; 6. Steel mesh; 7. Bracket; 8. Chemical anchor. DETAILED DESCRIPTION
[0024] The present invention is a method for reinforcing an old residential area sloping roof 1, which specifically comprises the following steps.
[0025] a. Remove the asphalt tiles 4 of roof 1 and reinforce the roof 1 with rebar.
[0026] b. Remove the concrete protective layer 3 around the reinforcement points at the ridge.
[0027] c. Repair the waterproof layer 2 at the reinforcement point.
[0028] d. Remove the cracked parts of the concrete protective layer 3 and pour and fill the removed concrete protective layer 3.
[0029] e. Remove the part of the concrete protective layer 3 that has slid out of the eaves.
[0030] f. Install the bracket 7 at the eaves so that the bracket 7 is in close contact with the concrete protective layer 3 to support the concrete protective layer 3.
[0031] g. Repair roof 1 asphalt tiles 4.
[0032] With regard to the reinforcement method for the sloping roof 1 of an old residential area of the present invention, in step a, the position of the embedded reinforcement is located, and the reinforcement is embedded at the ridge and the cracked or damaged parts on the roof 1. After the position of the embedded reinforcement is determined, the embedded reinforcement holes are drilled on the roof 1, the steel bars 5 are inserted into the embedded reinforcement holes, and the embedded reinforcement holes are filled with anchoring glue.
[0033] As the concrete protective layer 3 will slide along the inclined curved surface under its own gravity, the concrete protective layer 3 is reinforced by planting steel bars at the ridge. In addition, the surroundings of the cracked or damaged parts on the roof 1 are also reinforced by planting steel bars.
[0034] After determining the location of the embedded reinforcement, use an electric hammer to perform drilling. When the drilling position encounters existing reinforcement 5 on the substrate or encounters ventilation ducts, dormer windows, and upper entrances, the drilling position can be adjusted appropriately. However, all holes should be embedded in the original structural sloping roof 1 floor slab and should not be set in the protective layer or decorative layer of the component.
[0035] After drilling, check the hole depth and hole diameter. If qualified, blow out the dust in the hole with compressed air, then clean the hole wall with a brush and cotton cloth, and blow the hole with compressed air again. This should be repeated 3-5 times until there is no dust or debris in the hole. Finally, wipe the hole wall with cotton cloth and temporarily close the hole mouth.
[0036] If there are waste holes, clean them and fill them with rebar glue.
[0037] After the steel bar 5 or bolt is driven into the anchor hole, fill it with anchor glue. The amount of anchor glue filled should ensure that a small amount of glue overflows around the steel bar 5 after it is inserted.
[0038] In step b, the concrete protective layer 3 within 100 mm of the reinforcement planting point is removed, and then repaired with polyurethane waterproofing.
[0039] In the reinforcement method of the old residential area sloping roof 1 of the present invention, in step c, the surface of the base layer around the reinforcement planting point is cleaned and then coated with polyurethane waterproof material.
[0040] For the base surface of the polyurethane waterproof layer 2, dust and debris need to be cleaned, and the residual mortar lumps and protrusions on the surface need to be flattened, swept, plastered, and compacted. The corners need to be plastered into arcs or blunt angles. The base surface of the waterproof layer 2 should be kept dry, flat, and firm, without defects such as hollowing, cracking, and sanding. When painting the rebar, the rebar parts must be firmly installed, tightly embedded and inspected.
[0041] In the reinforcement method of the old residential area sloping roof 1 of the present invention, in step d, the concrete protective layer 3 on both sides of the cracked part of the concrete protective layer 3 is removed by 200 mm, respectively, to expose the steel mesh 6 in the concrete, clean the steel mesh 6, install a new steel mesh 6 at the crack, overlap the new steel mesh 6 with the steel mesh 6 in the protective layer by 200 mm, and tie them firmly, then pour with fine stone concrete, smooth it, and maintain it to reach the standard strength. At the same time, the concrete protective layer 3 removed in step b is also poured and filled.
[0042] In the reinforcement method of the sloping roof 1 of an old residential area of the present invention, in step e, the excess concrete protective layer 3 that has slipped beyond the eaves is cut off using a cutting machine. Before cutting, a line is drawn on the eaves to mark the cutting position, and the cutting is performed in sections, with each section not exceeding 2m.
[0043] With regard to the reinforcement method for the sloping roof 1 of an old residential area of the present invention, in step f, the bracket 7 is a steel plate or an angle steel, and the bracket 7 is fixed at the eaves by chemical anchor bolts 8 so that the bracket 7 is in close contact with the concrete protective layer 3, and if there are local gaps, they are filled with expansive cement.
[0044] Regarding the reinforcement method of the sloping roof 1 of an old residential area of the present invention, in step g, the asphalt tiles 4 are installed and repaired in layers from bottom to top along the sloping roof 1 .
[0045] like Figure 1 , Figure 2 as well as Figure 3 As shown in the figure, for different types of roof ridges, the specific construction process is basically the same, and reinforcement is carried out at the top of the roof ridge slope. At the same time, for the cracked or damaged parts in the middle of the roof 1, Φ8 steel bars are used for 5 heads of reinforcement, with an implantation depth of 60mm and a center distance of 2m.
[0046] like Figure 4As shown, the bracket 7 is fixed on the side of the eaves, and the upper edge height of the bracket 7 is slightly lower than the height of the asphalt tile 4. The bracket 7 prevents the concrete protective layer 3 from sliding along the inclined roof 1.
[0047] When the present invention is used to reinforce the sloping roof 1 of an old residential area, it is not necessary to completely remove the waterproof layer 2 of the roof 1. The roof 1 is reinforced by using a construction method of planting reinforcement, and only the local cracks need to be repaired. Compared with the traditional construction method, the cost is low, the construction period is short, and the construction quality is easy to ensure. The public opinion of residents is less affected during construction. At the same time, the bracket 7 is used to support the concrete protective layer 3, so as to prevent the concrete protective layer 3 from slipping and cracking, so as to ensure the quality of the concrete protective layer 3 after construction.
Claims
1. A method for reinforcing the sloping roof of an old residential area, characterized in that: The following steps are involved: a. Remove the roofing felt tiles and reinforce the roof with rebars; locate the rebar locations, rebars are planted at the ridge and cracked or damaged parts on the roof, and after the rebar locations are determined, rebar holes are drilled on the roof, steel bars are inserted into the rebar holes, and anchoring glue is used to fill the rebar holes; b. Remove the concrete protective layer around the reinforcement points at the ridge; c. Repair the waterproof layer at the reinforcement planting point; d. Remove the cracked parts of the concrete protective layer and pour and fill the removed concrete protective layer; remove 200mm of the concrete protective layer on both sides of the cracked parts of the concrete protective layer to expose the steel mesh in the concrete, clean the steel mesh, install new steel mesh at the crack, overlap the new steel mesh with the steel mesh in the protective layer by 200mm, tie them firmly, and then pour with fine stone concrete, smooth it, and maintain it to reach the standard strength; e. Remove the part of the concrete protective layer that has slid out of the eaves; use a cutting machine to cut off the excess concrete protective layer that has slid beyond the eaves. Before cutting, draw a line on the eaves to mark the cutting position, and cut in sections, with each section not exceeding 2m; f. Install the bracket at the eaves so that the bracket is in close contact with the concrete protective layer to support the concrete protective layer; g. Repair roofing felt tiles.
2. The method for reinforcing the sloping roof of an old residential area according to claim 1 is characterized in that: In step c, the surface of the base layer around the reinforcement planting point is cleaned and then coated with polyurethane waterproof material.
3. The method for reinforcing the sloping roof of an old residential area according to claim 1 is characterized in that: In step f, the bracket is a steel plate or angle steel, and is fixed to the eaves by chemical anchor bolts so that the bracket is in close contact with the concrete protective layer. If there are local gaps, they are filled with expansion cement.
4. The method for reinforcing the sloping roof of an old residential area according to claim 1 is characterized in that: In step g, the asphalt tiles are installed and repaired in layers from bottom to top along the sloping roof.