Waterproof structure of parapet wall and construction method thereof

Abstract

The application discloses a waterproof structure of a parapet wall and a construction method thereof, relates to the technical field of building waterproofing, and aims to solve the problem that water vapor is easily accumulated in the parapet wall. Technical scheme points are as follows: a roof and a main wall body, the roof serving as a reference surface on which the parapet wall is established, and the main wall body being vertically fixed to the edge of the roof; a waterproof assembly comprising a plurality of waterproof panels which are mutually spliced and fixedly connected to the outer side of the main wall body through connecting pieces, and the waterproof panels on the top of the main wall body being obliquely arranged towards the direction close to the roof. The application successfully avoids irregular diffusion or accumulation of water vapor in the cavity of the wall body by gathering the moisture into the organized path of the flow guide groove, thereby eliminating the hidden dangers of causing internal mold, failure of thermal insulation materials and corrosion of the structure, and enhancing the long-term durability and reliability of the parapet wall under complex climate conditions.

Description

Technical Field

[0001] This invention relates to the field of building waterproofing technology, and more specifically, to a waterproof structure for a parapet wall and its construction method. Background Technology

[0002] Parapet walls are key vertical components at the junction of a building's roof and exterior walls. Their core function is to provide safety protection, and their waterproof performance is directly related to the safety and durability of the building structure. Traditional parapet wall waterproofing mainly relies on laying waterproof membranes or applying waterproof coatings on the wall surface to form a continuous, sealed waterproof layer.

[0003] The waterproof layer is directly exposed to the natural environment and is subjected to long-term exposure to sunlight, rain, freeze-thaw cycles, and drastic temperature changes. The material is prone to aging and cracking, which can lead to the failure of the waterproof function. If the waterproof layer is slightly damaged or condensation occurs inside the wall due to temperature differences, this condensation will be trapped inside the wall and difficult to drain, which can accelerate the corrosion and deterioration of the internal structure and affect the structural stability of the parapet wall.

[0004] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a waterproof structure for parapet walls and its construction method, which has the advantage of being able to quickly drain condensate.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a waterproof structure for a parapet wall, comprising:

[0007] The roof and the main wall, wherein the roof serves as the reference plane for establishing the parapet wall, and the main wall is erected and fixed to the edge of the roof;

[0008] The waterproofing component includes several interlocking waterproof panels, which are fixedly connected to the outside of the main wall by connectors. The waterproof panels covering the top of the main wall are inclined towards the roof, and the inner sidewalls of the waterproof panels covering the facade of the main wall are provided with several vertically extending drainage channels.

[0009] The outer panel is parallel to the waterproof panel and is disposed on its outer side. The two are fixedly connected by spaced keels, and a drainage cavity is formed between the waterproof panel and the outer panel. The drainage cavity includes a top chamber corresponding to the top of the main wall and a facade chamber corresponding to the facade of the main wall. The top chamber and the facade chamber are interconnected.

[0010] The outer panel has a drain outlet on the side near the roof that communicates with the facade chamber. A first one-way valve is installed at the drain outlet, allowing only fluid from the facade chamber to be discharged outwards. An air intake grille is installed on the side of the outer panel near the top of the main wall that communicates with the top chamber. A second one-way valve is installed on the airflow path of the air intake grille, allowing only external air to enter the top chamber in one direction. A heat collection plate is fixedly connected to the top surface of the waterproof panel. The heat collection plate absorbs solar radiation heat and heats the top chamber below it. The heated air generates a thermo-pressure driven airflow in the complete channel of the drainage cavity. This airflow flows in from the air intake grille, flows through the top chamber and the facade chamber in sequence, and carries water vapor collected from the guide channel and is discharged from the drain outlet.

[0011] The present invention is further configured such that a waterproof substrate layer is applied to the outer surface of the main wall.

[0012] The present invention is further configured such that: a steel structure frame is provided on the outer side of the main wall, the steel structure frame is fixedly connected to the edge of the waterproof substrate layer, and the waterproof panel is installed on the side of the steel structure frame away from the main wall.

[0013] The present invention is further configured such that: the connector includes several heat-insulating steel frames, the heat-insulating steel frames cover the outside of the main wall and are spliced ​​with the steel structure frame, the waterproof panel is installed on the heat-insulating steel frame by bolts, and a sealing strip is installed at the splice between the waterproof panel and the heat-insulating steel frame.

[0014] The present invention is further configured such that a rain cover is provided on the outside of the air intake grille of the second one-way valve.

[0015] The invention is further configured such that a water collection trough is provided on the side of the roof near the main wall, and the water collection trough is located below the drain outlet.

[0016] The present invention is further configured such that the keel is a hollow tubular structure, with its two ends connected to the waterproof panel and the outer panel, respectively.

[0017] The present invention is further configured such that: the gap between the main wall and the waterproof panel is filled with a layer of thermal insulation material.

[0018] A construction method for a waterproof structure of a parapet wall, used to construct a waterproof structure of a parapet wall, comprising:

[0019] S1. On the completed roof, the main wall is built using bricks and concrete. After it dries and hardens, a waterproof lining layer is laid to form a basic waterproof barrier.

[0020] S2. Install the steel structure frame on the outside of the main wall using adjustable anchors, and level and correct it to ensure that its installation position is accurate and the verticality meets the requirements. Then, splice and fix the heat insulation steel frame with the steel structure frame to form a complete support frame.

[0021] S3. First, fill the space enclosed by the main wall, waterproof lining and steel frame with insulation material until it is dense. Then, install the waterproof panel with pre-processed drainage channel on the heat insulation steel frame with bolts. When installing, tilt the waterproof panel at the top of the main wall towards the roof and press the sealing strip into the joint between the waterproof panel and the heat insulation steel frame.

[0022] S4. Use hollow tubular keel to support the waterproof panel and fix both, and fix the outer panel to the other end of the keel;

[0023] S5. Install a water collection trough at the bottom of the facade chamber and below the drain outlet, ensuring that the bottom surface of the drain outlet is inclined towards the water collection trough. Open a drain outlet and an air intake grille at the preset position on the outer panel. Install the first one-way valve at the drain outlet and the second one-way valve on the airflow path of the air intake grille. Add a rain cover to the outside of the air intake grille.

[0024] S6. After construction is completed, conduct a comprehensive inspection of the entire waterproof structure, focusing on the sealing of all panel joints, whether the opening and closing directions of the first and second check valves are correct, and whether the drainage cavity is unobstructed.

[0025] In summary, the present invention has the following beneficial effects:

[0026] By using the drainage channels on the waterproof panels covering the main wall facade, moisture that may slowly seep out from inside the main wall, or condensation generated inside the structure due to temperature differences, can be effectively captured and guided. By collecting this moisture into the organized path of the drainage channels, the irregular diffusion or accumulation of moisture in the wall cavity is successfully avoided, thereby eliminating the hidden dangers that lead to internal mold, insulation material failure and structural corrosion, and enhancing the long-term durability and reliability of the parapet wall under complex climatic conditions. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 Cross-sectional view of the present invention Figure 1 ;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0030] Figure 4 Cross-sectional view of the present invention Figure 2 ;

[0031] Figure 5 This is a schematic diagram of the exploded structure of the present invention;

[0032] Figure 6 for Figure 5 Enlarged view of point B in the image;

[0033] Figure 7 Cross-sectional view of the present invention Figure 3 .

[0034] In the diagram: 1. Roof; 2. Main wall; 3. Waterproof panel; 4. Drainage channel; 5. Outer panel; 6. Keel; 7. Drainage cavity; 8. Drain outlet; 9. First one-way valve; 10. Air intake grille; 11. Second one-way valve; 12. Heat collection plate; 13. Waterproof lining layer; 14. Steel structure frame; 15. Insulated steel frame; 16. Sealing strip; 17. Rain cover; 18. Water collection trough. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0036] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] A waterproof structure for a parapet wall, such as Figures 1-7As shown, the structure includes a roof 1, a main wall 2, waterproofing components, and outer panels 5. The roof 1 serves as the reference surface for the parapet wall. The main wall 2 is vertically fixed to the edge of the roof 1. A waterproof backing layer 13 is applied to the outer surface of the main wall 2. The main wall 2 is constructed of bricks and concrete. To ensure its fundamental waterproofing performance, a dense waterproof backing layer 13 is pre-applied to the outer surface of the main wall 2. This is the first important line of defense against water intrusion. Based on this, waterproofing components are installed. The waterproofing components include several interlocking waterproof panels 3. The waterproof panels 3 are fixedly connected to the outside of the main wall 2 by connectors. The waterproof panels 3 covering the top of the main wall 2 are inclined towards the roof 1, which can effectively guide rainwater or snowmelt from the top to flow quickly to the drainage area of ​​the roof 1.

[0039] Furthermore, the inner wall of the waterproof panel 3 covering the facade of the main wall 2 is provided with several vertically extending drainage channels 4. These channels can effectively capture and guide water vapor that may slowly seep out from the interior of the main wall 2, or condensation generated inside the structure due to temperature differences. By collecting these moistures into the organized path of the drainage channels 4, the irregular diffusion or accumulation of water vapor in the wall cavity is successfully avoided, thereby eliminating the hidden dangers of internal mold growth, insulation material failure and structural corrosion, and enhancing the long-term durability and reliability of the parapet wall under complex climatic conditions.

[0040] In one embodiment, the outer panel 5 and the waterproof panel 3 are parallel to each other and disposed on the outer side of each other. The two are fixedly connected by a spaced-apart keel 6. The keel 6 is a hollow tubular structure, with its two ends connected to the waterproof panel 3 and the outer panel 5 respectively. A drainage cavity 7 is formed between the waterproof panel 3 and the outer panel 5. The drainage cavity 7 includes a top chamber corresponding to the top of the main wall 2 and a facade chamber corresponding to the facade of the main wall 2. The top chamber and the facade chamber are interconnected, forming a continuous and complete internal ventilation and drainage path from the top of the wall to the bottom of the wall, providing an unobstructed channel for air flow. After absorbing solar heat, the air inside the top chamber is heated and rises, and will naturally move towards the facade chamber and be discharged, thereby generating a stable thermal pressure-driven airflow in the entire cavity. This is the physical basis for realizing air intake from the top, flow through the entire facade, and finally carry away moisture from the bottom.

[0041] The outer panel 5 has a drain outlet 8 on the side near the roof 1, which communicates with the facade cavity. A first one-way valve 9 is installed at the drain outlet 8, allowing only fluid from the facade cavity to be discharged outwards. An air intake grille 10 is installed on the side of the outer panel 5 near the top of the main wall 2, which communicates with the top cavity. A second one-way valve 11 is installed along the airflow path of the air intake grille 10, allowing only external air to enter the top cavity in one direction. A rain cover 17 is installed outside the air intake grille 10 of the second one-way valve 11. A heat collection plate 12 is fixedly connected to the top surface of the waterproof panel 3. The heat collection plate 12 absorbs solar radiation heat and heats the top cavity below it. The heated air generates a thermally driven airflow within the complete channel of the drain cavity 7. On cloudy days or in low winter temperatures, the heat collection plate 12 can still maintain airflow by absorbing diffused radiation and residual heat from the environment, but the airflow intensity may vary with the solar radiation intensity. Maintaining a stable airflow typically requires a temperature difference of more than 5°C between the top chamber and the external environment. This temperature difference can be achieved by the heat collection plate 12 under most sunlight conditions, ensuring that the system works effectively most of the time. The airflow flows in from the air intake grille 10, flows through the top chamber and the vertical chamber in sequence, and carries the water vapor collected from the guide channel 4 and is discharged from the drain outlet 8.

[0042] The air intake grille 10 serves as the sole air intake, and a second one-way valve 11 is installed at the air intake grille 10 to allow only external air to enter the top cavity in one direction, thereby effectively preventing the backflow of internal hot air or moisture under abnormal conditions. To further ensure the reliability of this inlet in any weather, a rain cover 17 is also installed outside the second one-way valve 11, which can effectively shield against wind and rain, ensuring that rainwater will not be directly sucked into the top cavity in heavy rain. At the same time, a heat collection plate 12 is fixedly connected to the top surface of the waterproof panel 3. This heat collection plate 12 actively absorbs solar radiation heat energy and conducts it directly to the top cavity below it, thereby continuously heating the air in the drainage cavity 7 located at the top. This heat collection and heating process provides the initial and continuous thermal power for the air flow in the entire drainage cavity 7.

[0043] When the air in the top chamber is heated, its temperature rises and its density decreases, causing it to rise naturally and flow along the direction of the facade chamber, forming a flow path. It flows in from the top air intake grille 10, first entering the continuously heated top chamber, absorbing heat and transforming into hot and dry airflow, and then flowing downwards into the facade chamber. During this journey through the facade chamber, this hot and dry airflow sweeps across the guide grooves 4 on the inner waterproof panel 3, effectively evaporating and carrying away the trace amounts of water vapor that seeps from the main wall 2 or condenses within the guide grooves 4. Finally, this humid airflow is transported to the drain outlet 8 and discharged. The drain outlet 8 is equipped with a first one-way valve 9 that only allows internal fluid to be discharged outwards, ensuring that airflow and water vapor can only be discharged in one direction, achieving the effect of active dehumidification.

[0044] In one embodiment, a water collection trough 18 is provided on the side of the roof 1 near the main wall 2. The water collection trough 18 is located below the drain outlet 8 and is connected to the drainage system on the roof 1. This allows water inside the main wall 2 to be quickly discharged through the water collection trough 18, preventing the discharged water from accumulating on the roof 1 and forming new water vapor.

[0045] A steel frame 14 is installed on the outer side of the main wall 2, providing the core load-bearing foundation for all externally mounted components. The steel frame 14 is fixedly connected to the edge of the waterproof lining layer 13, and the waterproof panel 3 is installed on the side of the steel frame 14 away from the main wall 2. The connectors include several insulated steel frames 15, which cover the outer side of the main wall 2 and are spliced ​​with the steel frame 14. The waterproof panel 3 is bolted to the insulated steel frames 15. The gap between the main wall 2 and the waterproof panel 3 is filled with a thermal insulation layer. The thermal insulation layer effectively reduces energy loss caused by weak insulation in this area. In addition, a sealing strip 16 is installed at the joint between the waterproof panel 3 and the insulated steel frame 15, which not only plays a role in airtightness and watertightness, preventing external air and moisture from entering the internal cavity from the joint, but also works in conjunction with the internal insulation layer to ensure the integrated performance and long-term energy-saving effect of the building envelope structure.

[0046] A construction method for a waterproof structure of a parapet wall, used to construct a waterproof structure of a parapet wall, comprising:

[0047] S1. On the completed roof 1, the main wall 2 is constructed using bricks and concrete. After it dries and hardens, a waterproof lining layer 13 is laid to form a basic waterproof barrier.

[0048] S2. Install the steel structure frame 14 on the outside of the main wall 2 using adjustable anchor bolts, and level and correct it to ensure that its installation position is accurate and its verticality meets the requirements. Then, splice and fix the heat insulation steel frame 15 with the steel structure frame 14 to form a complete support frame.

[0049] S3. First, fill the space formed by the main wall 2, the waterproof substrate 13 and the steel frame 14 with the insulation material layer until it is dense. Then, install the waterproof panel 3 with the pre-processed drainage channel 4 on the heat insulation steel frame 15 with bolts. During installation, the waterproof panel 3 at the top of the main wall 2 is tilted towards the roof 1 with a slope of 2% to 5% to ensure smooth drainage and maintain structural stability. Then, press the sealing strip 16 into the joint between the waterproof panel 3 and the heat insulation steel frame 15.

[0050] S4. Use hollow tubular keel 6 to support the waterproof panel 3 and fix the two together, and fix the outer panel 5 to the other end of the keel 6.

[0051] S5. Install a water collection trough 18 at the bottom of the facade chamber and below the drain outlet 8, ensuring that the bottom surface of the drain outlet 8 is inclined towards the water collection trough 18. Open the drain outlet 8 and the air intake grille 10 at the preset position on the outer panel 5. Install the first one-way valve 9 at the drain outlet 8, install the second one-way valve 11 on the airflow path of the air intake grille 10, and add a rain cover 17 to the outside of the air intake grille 10.

[0052] S6. After construction is completed, a comprehensive inspection of the entire waterproof structure shall be carried out, with a focus on checking the sealing of all panel joints, whether the opening and closing directions of the first one-way valve 9 and the second one-way valve 11 are correct, and whether the drainage cavity 7 is unobstructed. The methods for verifying the opening and closing direction of the one-way valves include: for the second one-way valve 11, using a fan to simulate a wind speed of 0.5-1m / s, observing whether the airflow can only enter the top chamber and there is no backflow; for the first one-way valve 9, confirming through a water injection test that only internal fluid is allowed to be discharged outwards and there is no reverse leakage. These tests ensure that the first one-way valve 9 and the second one-way valve 11 can work normally under actual conditions.

[0053] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A waterproof structure for a parapet wall, characterized in that, include: The roof and the main wall, wherein the roof serves as the reference plane for establishing the parapet wall, and the main wall is erected and fixed to the edge of the roof; The waterproofing component includes several interlocking waterproof panels, which are fixedly connected to the outside of the main wall by connectors. The waterproof panels covering the top of the main wall are inclined towards the roof, and the inner sidewalls of the waterproof panels covering the facade of the main wall are provided with several vertically extending drainage channels. The outer panel is parallel to the waterproof panel and is disposed on its outer side. The two are fixedly connected by spaced keels, and a drainage cavity is formed between the waterproof panel and the outer panel. The drainage cavity includes a top chamber corresponding to the top of the main wall and a facade chamber corresponding to the facade of the main wall. The top chamber and the facade chamber are interconnected. The outer panel has a drain outlet on the side near the roof that communicates with the facade chamber. A first one-way valve is installed at the drain outlet, allowing only fluid from the facade chamber to be discharged outwards. An air intake grille is installed on the side of the outer panel near the top of the main wall that communicates with the top chamber. A second one-way valve is installed on the airflow path of the air intake grille, allowing only external air to enter the top chamber in one direction. A heat collection plate is fixedly connected to the top surface of the waterproof panel. The heat collection plate absorbs solar radiation heat and heats the top chamber below it. The heated air generates a thermo-pressure driven airflow in the complete channel of the drainage cavity. This airflow flows in from the air intake grille, flows through the top chamber and the facade chamber in sequence, and carries water vapor collected from the guide channel and is discharged from the drain outlet.

2. The waterproof structure of a parapet wall according to claim 1, characterized in that: The outer surface of the main wall is covered with a waterproof lining layer.

3. The waterproof structure of a parapet wall according to claim 2, characterized in that: A steel frame is provided on the outside of the main wall. The steel frame is fixedly connected to the edge of the waterproof lining layer. The waterproof panel is installed on the side of the steel frame away from the main wall.

4. The waterproof structure of a parapet wall according to claim 1, characterized in that: The connector includes several heat-insulating steel frames, which cover the outside of the main wall and are spliced ​​with the steel structure frame. The waterproof panel is installed on the heat-insulating steel frame by bolts, and a sealing strip is installed at the splice between the waterproof panel and the heat-insulating steel frame.

5. A waterproof structure for a parapet wall according to claim 1, characterized in that: The air intake grille of the second one-way valve is equipped with a rain cover.

6. The waterproof structure of a parapet wall according to claim 1, characterized in that: A water collection trough is provided on the side of the roof near the main wall, and the water collection trough is located below the drain outlet.

7. A waterproof structure for a parapet wall according to claim 1, characterized in that: The keel is a hollow tubular structure, with its two ends connected to the waterproof panel and the outer panel, respectively.

8. The waterproof structure of a parapet wall according to claim 1, characterized in that: The gap between the main wall and the waterproof panel is filled with a layer of thermal insulation material.

9. A construction method for a waterproof structure of a parapet wall, used to construct a waterproof structure of a parapet wall as described in any one of claims 1-8, characterized in that, include: S1. On the completed roof, the main wall is built using bricks and concrete. After it dries and hardens, a waterproof lining layer is laid to form a basic waterproof barrier. S2. Install the steel structure frame on the outside of the main wall using adjustable anchors, and level and correct it to ensure that its installation position is accurate and the verticality meets the requirements. Then, splice and fix the heat insulation steel frame with the steel structure frame to form a complete support frame. S3. First, fill the space enclosed by the main wall, waterproof lining and steel frame with insulation material until it is dense. Then, install the waterproof panel with pre-processed drainage channel on the heat insulation steel frame with bolts. When installing, tilt the waterproof panel at the top of the main wall towards the roof and press the sealing strip into the joint between the waterproof panel and the heat insulation steel frame. S4. Use hollow tubular keel to support the waterproof panel and fix both, and fix the outer panel to the other end of the keel; S5. Install a water collection trough at the bottom of the facade chamber and below the drain outlet, ensuring that the bottom surface of the drain outlet is inclined towards the water collection trough. Open a drain outlet and an air intake grille at the preset position on the outer panel. Install the first one-way valve at the drain outlet and the second one-way valve on the airflow path of the air intake grille. Add a rain cover to the outside of the air intake grille. S6. After construction is completed, conduct a comprehensive inspection of the entire waterproof structure, focusing on the sealing of all panel joints, whether the opening and closing directions of the first and second check valves are correct, and whether the drainage cavity is unobstructed.

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