Anti-cracking and anti-alkali return inclined roof structure
By combining reinforced concrete sloping roofs with multi-layer building materials in the eaves structure, the problems of cracking and efflorescence on the eaves curb were solved, and the stability and thermal insulation of the structure were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG XIANGSHUN CONSTR ENG CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-12
AI Technical Summary
The existing eaves structure is prone to cracking and efflorescence at the junction of the sloping roof and the inverted sill, which affects the appearance and structural performance of the building.
The sloping roof, constructed with reinforced concrete, is combined with a polymer cement waterproof mortar layer, a fine stone concrete layer, a polymer crack-resistant mortar layer, and an exterior wall paint layer to form an integrated inverted curb and sloping roof. Internal drainage pipes are installed to enhance structural stability and prevent efflorescence.
It effectively prevents cracking of eaves and reduces the risk of efflorescence, improves the structural performance and thermal insulation of buildings, and is suitable for modern design of large-scale buildings.
Smart Images
Figure CN224351510U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building structures, specifically to a sloping roof structure that is crack-resistant and alkali-resistant. Background Technology
[0002] The eaves are the architectural structures at both ends of the roof eaves, generally referring to the eaves of ancient buildings. The eaves are architectural structures that facilitate the drainage of rainwater and thus protect the walls of ancient buildings. In existing technology, the eaves are generally set after the roof eaves are built, and include wooden columns, wooden purlins, wooden beams, purlins, and flying rafters. They are made of a combination of concrete and wooden structures. A typical example of existing technology CN201620846933.7 is an ancient-style wooden eaves without concrete beams.
[0003] However, in current eaves structures, the inverted sill is usually combined with the sloping roof using a splicing method. Furthermore, in existing technologies, eaves are generally arranged using a splicing method. For example, CN218758359U discloses a wooden eaves structure for an antique-style building, including a roof panel, wooden columns, and wooden eaves strips. A wooden column connecting plate is provided on one side of the roof panel, and this connecting plate is an integral structure with the roof panel. The wooden columns are fixed to the side of the connecting plate. The wooden eaves strips are fixed to the roof panel by rivets. A drainage mechanism support frame is horizontally inserted into the end of the wooden eaves strips. A drainage mechanism sits on the top of the drainage mechanism support frame, and a drainage pipe is fixedly connected to the bottom of the drainage mechanism. This utility model increases the drainage effect by adding an auxiliary drainage mechanism to the end face of the wooden eaves strips, avoiding the problem of small amounts of rainwater flowing down the eaves surface due to untimely drainage. The drainage mechanism is supported and fixed by the drainage mechanism support frame inserted into the wooden eaves strips, facilitating the installation of the drainage mechanism. However, this structure uses tiles, which is not suitable for large-scale buildings, and the eaves are prone to cracking, leaks, and efflorescence under all weather conditions.
[0004] CN220301657U discloses a building eaves with a built-in drainage channel, including an eaves set on the top of a building, located above the building's exterior wall. The top of the building is a roof, on which a composite waterproof layer is installed. The eaves are composed of a horizontal plate, an inclined plate, and a vertical plate. The horizontal plate is flush with the roof, and its inner end is fixed to the roof. The lower end of the vertical plate is fixed to the roof. The inner end of the inclined plate is fixed to the upper end of the vertical plate, and the outer end of the inclined plate is fixed to the outer end of the horizontal plate. A U-shaped plate is fixed to the outer end of the horizontal plate, and the inner cavity of the U-shaped plate is a rainwater diversion channel with an upward opening. With this building eaves with a built-in drainage channel, rainwater falling onto the inclined plate flows into the rainwater diversion channel, preventing rainwater from dripping down the lower edge of the eaves. This keeps the building's exterior wall surface dry and avoids the detachment of the building's exterior wall insulation layer due to moisture.
[0005] Although it employs relevant structures to prevent rainwater from running along the building, it is prone to cracking and efflorescence due to all-weather conditions.
[0006] Especially when using reinforced concrete structures, if the inverted curb is not installed as an integral part, efflorescence is prone to occur at the bottom of the inverted curb. Efflorescence not only affects the appearance of the building, but also affects the structural performance of the building.
[0007] Based on the above problems, this utility model proposes a crack-resistant and efflorescence-resistant sloping roof structure, which can avoid cracking at the connection between the sloping roof and the inverted sill, and also prevent efflorescence. Utility Model Content
[0008] To address the aforementioned problems, this utility model proposes a crack-resistant and efflorescence-resistant sloping roof structure, which can solve the technical problems of eave cracking and efflorescence in the prior art.
[0009] To solve the above problems, the technical solution of this utility model is as follows:
[0010] A crack-resistant and efflorescence-resistant sloping roof structure includes a sloping roof, a sloping roof support, and a drainage ditch. The sloping roof is composed of a reinforced concrete body layer, a polymer cement waterproof mortar layer, a fine stone concrete layer, a polymer crack-resistant mortar layer, and an exterior wall paint layer. A curb is provided at one end of the sloping roof. The curb and the sloping roof are an integral reinforced concrete structure. The curb is reinforced with slab reinforcement and contains several drainage pipes.
[0011] Preferably, the sloping roof and the inverted curb are both made of reinforced concrete, and the height of the inverted curb is 60-80mm.
[0012] Preferably, the exterior of the retaining wall is sequentially coated with a cement-based waterproof coating, a polymer crack-resistant mortar, and an exterior wall coating.
[0013] Preferably, the drain pipe extends 40-60mm beyond the curb, the drain pipe is a PVC drain pipe, and the drain pipe is installed every 2-3m along the width direction of the curb.
[0014] Preferably, the distance between the smooth end of the polymer cement waterproof mortar layer and the countersunk edge is greater than or equal to 150 mm, and more preferably greater than or equal to 130 mm.
[0015] Preferably, the thickness of the polymer cement waterproof mortar layer is 15-30mm.
[0016] Preferably, the width of the retaining wall and the drainage ditch is the same, and the width of the retaining wall or the drainage ditch is 80-150mm, preferably 100-120mm.
[0017] Preferably, a thermal insulation board is also provided between the polymer cement waterproof mortar layer and the fine stone concrete layer.
[0018] Preferably, the fine aggregate concrete layer is composed of a grid, a steel mesh, and weather-resistant sealant.
[0019] Preferably, the drain pipe is a DN30 PVC drain pipe, the drain pipes are arranged every 2-3m, the surface of the drain pipe is painted, and the paint color is the same as the exterior wall color.
[0020] Preferably, the thermal insulation board is an extruded polystyrene thermal insulation board, and the thickness of the thermal insulation board is arranged according to the required thickness, which can be selected as 20-60mm, preferably 30-40mm.
[0021] Preferably, the fine aggregate concrete is 40mm thick, includes a 100×100 grid, a steel mesh, and joints with a spacing of no more than 3×3m and a joint width of 10-15mm, which are filled with weather-resistant adhesive.
[0022] Preferably, the dimensions of the reinforcement of the inverted curb can be selected as Φ8@150 or Φ8@200.
[0023] Preferably, the height of the inverted curb relative to the drainage ditch is 60-80mm.
[0024] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0025] 1. This utility model sets up a multi-layer building material structure on the sloping roof structure, which includes a sloping roof reinforced concrete structure, a polymer cement waterproof mortar layer, a fine stone concrete layer, a polymer crack-resistant mortar layer, and an exterior wall paint layer. The use of reinforced concrete structure to prepare the sloping roof can enhance the structure of the sloping roof. At the same time, the use of modern building structure facilitates widespread promotion and has strong adaptability.
[0026] 2. By setting up layers for different usage conditions, this utility model can reduce efflorescence on the eaves and prevent water leakage at the eaves. By preparing the inverted curb with an integrated concrete structure, cracking of the inverted curb can be avoided, and water stains can be prevented from accumulating at the inverted curb and causing efflorescence.
[0027] 3. In another embodiment of this utility model, an insulation layer structure is provided between the layers of the sloping roof to improve the insulation effect of the building and prevent dampness from rising from the inner wall of the sloping roof. Attached Figure Description
[0028] Figure 1 This utility model relates to a crack-resistant and efflorescence-resistant sloping roof structure;
[0029] Figure 2 This is another embodiment of the present invention: a sloping roof structure that is crack-resistant and alkali-resistant.
[0030] Legend:
[0031] 1. Sloping roof; 11. Polymer cement waterproof mortar layer; 12. Fine aggregate concrete layer; 13. Polymer crack-resistant mortar layer; 14. Exterior wall paint layer; 15. Reinforced concrete body layer; 16. Thermal insulation board; 21. Cement-based waterproof coating; 22. Polymer crack-resistant mortar; 23. Exterior wall paint; 24. Reinforced concrete structure of the curb; 25. Drainage pipe; 26. Reinforcement of the first curb; 261. Reinforcement of the second curb; 27. Reinforcement of the curb; 3. Drainage ditch; 4. Mortar smooth finish. Detailed Implementation
[0032] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0033] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0034] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings: Example 1
[0035] like Figure 1 As shown: A crack-resistant and efflorescence-resistant sloping roof structure includes a sloping roof 1, a sloping roof support, and a drainage ditch 3; the sloping roof 1 is composed of a reinforced concrete body layer 15, a polymer cement waterproof mortar layer 14, a fine stone concrete layer 13, a polymer crack-resistant mortar layer 12, and an exterior wall paint layer 11. A curb 2 is provided at one end of the sloping roof 1. The curb 2 and the sloping roof 1 are an integral reinforced concrete structure. The curb 2 is reinforced with curb reinforcement (27, 26, 261) according to the slab reinforcement. Several drainage pipes 25 are provided in the curb 2.
[0036] The inverted sill 2 and the sloping roof 1 are both reinforced concrete structures, and the height of the inverted sill is 75±5mm.
[0037] The exterior of the retaining wall 2 is sequentially coated with cement-based waterproof coating 23, polymer crack-resistant mortar 22, and exterior wall coating 21.
[0038] The drain pipe 25 extends 50mm beyond the curb. The drain pipe 25 is a DN30 PVC drain pipe. The drain pipe 25 is installed every 2m along the width direction of the curb 2. The surface of the drain pipe is painted, and the paint color is the same as the exterior wall color.
[0039] The distance between the smooth end 4 of the polymer cement waterproof mortar layer 14 and the countersunk edge 2 is greater than or equal to 130mm.
[0040] The thickness of the polymer cement waterproof mortar layer 14 is 20mm.
[0041] The inverted curb 2 and the drainage ditch 3 have the same width, and the width of either the inverted curb 2 or the drainage ditch 3 is 100mm.
[0042] The fine aggregate concrete layer 13 is composed of a grid, steel mesh, and weather-resistant sealant.
[0043] The fine aggregate concrete is 40mm thick and includes a 100×100 grid and a steel mesh; the joint spacing is no more than 2×2m, the joint width is 10mm, and the joints are filled with weather-resistant adhesive.
[0044] The dimensions of the reinforcement of the inverted retaining wall are Φ8@150 and Φ8@200. Example 2
[0045] like Figure 2 As shown, a crack-resistant and efflorescence-resistant sloping roof structure includes a sloping roof 1, a sloping roof support, and a drainage ditch 3. The sloping roof 1 is composed of a reinforced concrete body layer 15, a polymer cement waterproof mortar layer 14, a fine stone concrete layer 13, a polymer crack-resistant mortar layer 12, and an exterior wall paint layer 11. A curb 2 is provided at one end of the sloping roof 1. The curb 2 and the sloping roof 1 are an integral reinforced concrete structure. The curb 2 is reinforced with curb reinforcement (27, 26, 261) according to the slab reinforcement. Several drainage pipes 25 are provided in the curb 2.
[0046] The inverted sill 2 and the sloping roof 1 are both reinforced concrete structures, and the height of the inverted sill is 75±5mm.
[0047] The exterior of the retaining wall 2 is sequentially coated with cement-based waterproof coating 23, polymer crack-resistant mortar 22, and exterior wall coating 21.
[0048] The drain pipe 25 extends 50mm beyond the curb. The drain pipe 25 is a DN30 PVC drain pipe. The drain pipe 25 is installed every 2m along the width direction of the curb 2. The surface of the drain pipe is painted, and the paint color is the same as the exterior wall color.
[0049] The distance between the smooth end 4 of the polymer cement waterproof mortar layer 14 and the countersunk edge 2 is greater than or equal to 130mm.
[0050] The thickness of the polymer cement waterproof mortar layer 14 is 20mm.
[0051] The inverted curb 2 and the drainage ditch 3 have the same width, and the width of either the inverted curb 2 or the drainage ditch 3 is 100mm.
[0052] The fine aggregate concrete layer 13 is composed of a grid, steel mesh, and weather-resistant sealant.
[0053] The fine aggregate concrete is 40mm thick and includes a 100×100 grid and a steel mesh; the joint spacing is no more than 2×2m, the joint width is 10mm, and the joints are filled with weather-resistant adhesive.
[0054] The dimensions of the reinforcement of the inverted retaining wall are Φ8@150 and Φ8@200.
[0055] A thermal insulation board 16 is also provided between the polymer cement waterproof mortar layer 14 and the fine stone concrete layer 13. The thermal insulation board is an extruded polystyrene thermal insulation board with a thickness of 30mm. Example 3
[0056] like Figure 1 As shown: The difference between Example 3 and Example 1 is that the sloping roof 1 is composed of a reinforced concrete body layer 15, a polymer cement waterproof mortar layer 14, a fine stone concrete layer 13, a polymer crack-resistant mortar layer 12, and an exterior wall paint layer 11.
[0057] The thicknesses of the polymer cement waterproof mortar layer 14, the fine stone concrete layer 13, the polymer crack-resistant mortar layer 12, and the exterior wall paint layer 11 are respectively: polymer cement waterproof mortar layer 14 20mm thick, fine stone concrete layer 13 40mm thick, polymer crack-resistant mortar layer 12 10mm thick, and exterior wall paint layer 11.
[0058] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A crack and alkali resistant hip roof structure comprising a hip roof, a hip roof support, a gutter; characterized in that: The sloping roof is composed of a reinforced concrete body layer, a polymer cement waterproof mortar layer, a fine stone concrete layer, a polymer crack-resistant mortar layer, and an exterior wall paint layer. One end of the sloping roof is provided with a sill. The sill and the sloping roof are an integral reinforced concrete structure. The sill is reinforced with slab reinforcement and has several drainage pipes installed inside.
2. The anti-cracking and anti-alkali-returning bituminous roof structure according to claim 1, characterized in that: The inverted sill and the sloping roof are both reinforced concrete structures, and the inverted sill and the sloping roof are an integral structure. The height of the inverted sill is 60-80mm.
3. A split and alkali resistant batten and batt for a roof structure according to claim 2, wherein: The exterior of the retaining wall is sequentially coated with cement-based waterproof coating, polymer crack-resistant mortar, and exterior wall coating.
4. The anti-alkali and anti-cracking inclined roof structure according to claim 1, characterized in that: The drain pipe extends 40-60mm beyond the sill, and the drain pipe is a PVC drain pipe. The drain pipe is installed every 2-3m along the width of the sill.
5. The anti-alkali and anti-cracking inclined roof structure according to claim 1, characterized in that: The distance between the smooth end of the polymer cement waterproof mortar layer and the countersunk edge is greater than or equal to 130mm.
6. A crack-resistant and efflorescence-resistant sloping roof structure according to claim 1, characterized in that: The polymer cement waterproof mortar layer has a thickness of 15-30mm and a smooth finish.
7. A crack-resistant and efflorescence-resistant sloping roof structure according to claim 3, characterized in that: The width of the retaining wall and the drainage ditch are the same, and the width of the retaining wall or the drainage ditch is 80-150mm.
8. A sloping roof structure resistant to cracking and efflorescence according to claim 1, characterized in that: A thermal insulation board is also provided between the polymer cement waterproof mortar layer and the fine stone concrete layer.
9. A crack-resistant and efflorescence-resistant sloping roof structure according to claim 1, characterized in that: The fine aggregate concrete layer consists of a grid, steel mesh, and weather-resistant sealant.