A roof waterproofing and drainage renovation structure and construction method for prestressed large roof panels

Abstract

This invention discloses a roof waterproofing and drainage modification structure and construction method for prestressed large roof panels, specifically relating to the field of waterproofing and drainage modification technology. It includes a roof base layer, a drainage ditch, a modification component, an inner sealing gasket, and two pressure beams. The drainage ditch is located on one side of the roof base layer; the modification component is located on one side of the drainage ditch; the inner sealing gasket is adhered to the inner wall of the drainage ditch; and both pressure beams are located above the drainage ditch, with embedded waterproof components on their inner walls. This invention achieves waterproofing and drainage modification of prestressed large roof panels without damaging the original structure, resulting in lower modification costs and superior waterproofing performance. It solves the problem of providing waterproofing and drainage nodes that balance structural safety and reliable waterproofing without damaging the original structure, which previously led to high modification costs and poor waterproofing performance when modifying prestressed large roof panels.

Description

Technical Field

[0001] This invention relates to the field of waterproofing and drainage renovation technology, and more specifically, to a roof waterproofing and drainage renovation structure and construction method for prestressed large roof panels. Background Technology

[0002] In the process of urbanization, some old industrial buildings have been transformed into new urban commercial complexes. When the roofs of these old factory buildings use prestressed large roof panels, the concrete structure cannot be chiseled, making it inconvenient to directly add reinforced concrete structures from the old structure to facilitate the renovation. Existing technical literature includes patents such as CN121738326A (a double-pipe structure for inverted roof drainage and its construction method), which completely eliminates hydrostatic pressure on the waterproof layer, significantly reduces the risk of roof leakage, has a simple structure, precise positioning, durability, and requires no maintenance, and is suitable for both new construction and renovation of inverted roofs. Patent CN222685930U (an external roof rainwater drainage structure) discloses a waterproof layer on the surface of the inner component of the rainwater inlet, with the top of the steel grate fixed to the parapet wall by expansion bolts, and an outlet vertically downward at the bottom of the outer component. This structure replaces indoor drainage methods and has substantial significance for the renovation of old residential areas. However, this technology still has the following drawbacks.

[0003] During the waterproofing and drainage renovation of prestressed large roof panels, it is difficult to provide waterproofing and drainage nodes that are both structurally safe and waterproof without damaging the original structure. As a result, the waterproofing and drainage renovation of prestressed large roof panels is not only costly, but also has poor waterproofing and drainage effect. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a roof waterproofing and drainage modification structure for prestressed large roof panels, including a roof base layer, wherein a drainage ditch is provided on one side of the roof base layer; The modification component is installed on one side of the drainage ditch. The inner sealing gasket is adhered to the inner wall of the drainage ditch. Two pressure beams are both installed above the drainage ditch body, and the inner wall of the pressure beams is provided with embedded waterproof components; The inclined pressure waterproof component is installed at the corner of the bottom end of the inner wall of the pressure beam; The modified component is used to reinforce one side of the drainage ditch body. The pressure beam is used to counterweight and compress the embedded waterproof component, so that the embedded waterproof component compresses and seals the top position of the connection between the drainage ditch body and the inner sealing gasket. At the same time, the pressure beam counterweight obliquely presses the waterproof component, and the obliquely pressed waterproof component is used to compress and seal the corner position of the bottom inner wall of the connection between the drainage ditch body and the inner sealing gasket.

[0005] In a preferred embodiment, the inner sealing gasket is made of silicone, and the drainage ditch body is made of concrete.

[0006] In a preferred embodiment, the modification includes: A capping beam is installed on one side of the drainage ditch. A brick parapet wall is fixed to the bottom end of the capping beam. The capping beam is used to counterweight and compress the brick parapet wall. A leveling base is set on the lower layer of the brick parapet wall. Multiple new steel bars are installed below the leveling base, and the outer wall of the new steel bars is coated with a layer of fireproof coating.

[0007] In a preferred embodiment, the lower surface of the capping beam is higher than the upper surface of the brick parapet wall, and the upper surface of the leveling base is horizontally positioned.

[0008] In a preferred embodiment, multiple new steel bars are arranged sequentially from front to back, and the new steel bars are arranged at an angle.

[0009] In a preferred embodiment, the embedded waterproof component includes: A pressure pad is fixed to the top of the inner wall of the pressure beam, and the pressure pad is fixedly connected to the drainage ditch body; A pressure column is installed on one side of the inner wall of the pressure beam. An embedded protrusion is provided below the pressure column. Both the embedded protrusion and the pressure column are fixedly connected to the pressure beam. Both the pressure column and the embedded protrusion are used to compress the inner sealing gasket. An embedded strip is provided on one side of the inner sealing gasket. The embedded strip is fixedly connected to the drainage ditch body. A raised strip is provided on one side of the inner sealing gasket and below the embedded strip. The raised strip is fixedly connected to the inner sealing gasket.

[0010] In a preferred embodiment, a gap is provided between the embedded strip and the pressure post, the vertical cross-section of the pressure post is circular, and the vertical cross-section of the embedded strip is triangular.

[0011] In a preferred embodiment, the tip of the insert strip is positioned opposite to that of the embedded protrusion.

[0012] In a preferred embodiment, the inclined pressure waterproof component includes: A pressure bar is fixedly installed on the lower surface of the pressure beam. A counterweight sleeve is fixed to the outer wall of the pressure bar. A pressure sleeve is connected to the bottom end of the counterweight sleeve. The counterweight sleeve is used to counterweight the pressure sleeve. An inclined pressure strip is fixedly installed at the bottom end of the pressure sleeve, and the inclined pressure strip is extruded and connected to the inner sealing gasket; A pressing head is embedded at the corner of the outer wall of the inclined pressure strip. The pressing head is used to compress the inner sealing gasket. An outer insert is fixed to the outer wall of the inner sealing gasket near its corner. A method for roof waterproofing and drainage renovation of prestressed large roof panels, the method comprising the following steps: Step 1: Clean the roof base, insert multiple new steel bars on one side and apply fire-retardant coating, and set up a leveling base on top; Step 2: Construct a brick parapet wall on the leveled base, and install a capping beam on top to form a drainage ditch. Step 3: Attach the inner sealing gasket to the inner wall of the drainage ditch, and install the pressure beam above it so that the embedded waterproof component squeezes and seals the top of the joint. Step 4: The pressure beam drives the inclined pressure waterproof component to squeeze and seal the bottom corner of the connection between the drainage ditch and the inner sealing gasket.

[0013] The technical effects and advantages of the present invention.

[0014] 1. This invention uses a counterweight beam to press and embed waterproof components, which makes the embedded waterproof components press and seal at multiple points on the top of the connection between the drainage ditch and the inner sealing gasket. At the same time, it works with the inclined pressure waterproof components to press and seal the corner of the bottom inner wall of the connection. Without damaging the original structure, it realizes the waterproofing and drainage transformation of the prestressed large roof panel, with lower transformation cost and better waterproofing and drainage effect.

[0015] 2. This invention reinforces the bottom of the roof base by embedding new steel bars at the bottom of the roof base and applying fireproof coating. The top beam is used to counterweight the brick parapet wall, and the base is leveled so that the brick parapet wall and the top beam are on the same plane, thus creating a drainage ditch and realizing the organized drainage of large prefabricated roof panels.

[0016] 3. This invention adopts multi-point compression sealing with embedded waterproof components, sealing of corner positions with inclined pressure waterproof components, and reinforcement of the roof base with new steel bars. The overall structure is safe and reliable, and the waterproof performance is significantly improved, effectively meeting the needs of waterproofing and drainage renovation of prestressed large roof panels. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main view of the roof waterproofing and drainage modification structure of the prestressed large roof panel of the present invention.

[0018] Figure 2 This is a schematic diagram of the main view of the connection between the drainage ditch body and the inner sealing gasket of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the connection between the drainage ditch body and the inner sealing gasket of the present invention.

[0020] Figure 4 This is a partial structural diagram of the connection between the pressure bar and the pressure beam of the present invention.

[0021] Figure 5 This is a partial structural diagram of the connection between the pressure beam and the pressure column of the present invention.

[0022] Figure 6 This is a partial structural diagram of the drainage ditch body and inner sealing gasket of the present invention.

[0023] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle.

[0024] Figure 8 This is a schematic diagram of the partial structure of the outer insert and the pressing head cut-off section of the present invention.

[0025] The attached diagram is labeled as follows: 1. Roof base; 2. Drainage ditch; 3. Inner sealing gasket; 4. Pressure beam; 5. Top beam; 6. Brick parapet wall; 7. Leveling base; 8. New steel reinforcement; 9. External fireproof coating; 10. Pressure pad; 11. Pressure column; 12. Embedded protrusion; 13. Inner strip; 14. Pressure protrusion; 15. Pressure rod; 16. Counterweight sleeve; 17. Pressure sleeve; 18. Diagonal pressure strip; 19. Pressure head; 20. Outer strip. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1: In this technology, such as Figure 1 - Figure 5 The roof waterproofing and drainage modification structure of the prestressed large roof panel shown includes a roof base layer 1, a drainage ditch 2 on one side of the roof base layer 1; a modification component, set on one side of the drainage ditch 2; an inner sealing gasket 3, pasted on the inner wall of the drainage ditch 2; two pressure beams 4, both set above the drainage ditch 2, with embedded waterproof components on the inner wall of the pressure beams 4; and a diagonal waterproof component set at the bottom corner of the inner wall of the pressure beams 4. The inner sealing gasket 3 is made of silicone, and the drainage ditch 2 is made of concrete.

[0028] In use, the modified component reinforces one side of the drainage ditch 2, and the pressure beam 4 counterweights and presses the embedded waterproof component, so that the embedded waterproof component presses and seals the top position of the connection between the drainage ditch 2 and the inner sealing gasket 3. At the same time, the pressure beam 4 counterweights and obliquely presses the waterproof component, which is used to press and seal the corner position of the bottom inner wall of the connection between the drainage ditch 2 and the inner sealing gasket 3. Without damaging the original structure, the waterproofing and drainage modification of the prestressed large roof panel not only has lower modification costs, but also has better waterproofing and drainage effect.

[0029] Example 2: In this technology, such as Figure 1 - Figure 3 As shown, the modified components include: a capping beam 5, installed on one side of the drainage ditch body 2, with a brick parapet wall 6 fixed to its bottom end; the capping beam 5 is used to counterweight and compress the brick parapet wall 6; and a leveling base 7, installed below the brick parapet wall 6, with multiple new steel bars 8 below the leveling base 7, and the outer wall of the new steel bars 8 coated with a layer of fire-retardant paint 9. The lower surface of the capping beam 5 is higher than the upper surface of the brick parapet wall 6, and the upper surface of the leveling base 7 is horizontal. The multiple new steel bars 8 are arranged sequentially from front to back, and the new steel bars 8 are inclined.

[0030] In this technology, new steel bars 8 are inserted into the bottom of the roof base layer 1, and fire-retardant coating 9 is applied to the outer wall of the new steel bars 8. This allows multiple new steel bars 8 to reinforce the bottom of the roof base layer 1. At the same time, the capping beam 5 will counterweight the brick parapet wall 6, which in turn counterweights the leveling base 7 to ensure the stability of the brick parapet wall 6. The leveling base 7 ensures that the brick parapet wall 6 and the capping beam 5 are in a planar state, thus forming a drainage ditch 2 on the roof base layer 1. On the prestressed large roof panel, water on the roof base layer 1 can be discharged by tilting along the inner sealing gasket 3 inside the drainage ditch 2. By using the leveling base 7 and the brick parapet wall 6 to create the drainage ditch 2, and by combining the above waterproof joint methods, organized drainage of large precast roof panels can be achieved without knocking down the large roof panels.

[0031] Example 3: In this technology, such as Figure 3 - Figure 5 The embedded waterproof components shown include: a pressure pad 10, fixed to the top of the inner wall of the pressure beam 4, and fixedly connected to the drainage ditch body 2; a pressure column 11, installed on one side of the inner wall of the pressure beam 4, with an embedded protrusion 12 below the pressure column 11, both the embedded protrusion 12 and the pressure column 11 being fixedly connected to the pressure beam 4, and both the pressure column 11 and the embedded protrusion 12 being used to compress the inner sealing gasket 3; and an inner strip 13, disposed on one side of the inner sealing gasket 3, fixedly connected to the drainage ditch body 2, with a pressure protrusion 14 on one side of the inner sealing gasket 3 and below the inner strip 13, fixedly connected to the inner sealing gasket 3. A gap exists between the inner strip 13 and the pressure column 11. The vertical cross-section of the pressure column 11 is circular, and the vertical cross-section of the inner strip 13 is triangular. The tips of the inner strip 13 and the embedded protrusion 12 are arranged in opposite directions.

[0032] In use, the pressure beam 4 is counterweighted with a pressure pad 10. After being buffered by the pressure pad 10, the pressure beam 4 continuously squeezes the pressure column 11. The pressure column 11 squeezes the inner sealing gasket 3. At the same time, the inner embedded strip 13 protrudes and squeezes the left side of the inner sealing gasket 3. The pressure beam 4 squeezes and embeds the embedded protrusion 12, which is embedded and squeezed at the right side of the inner sealing gasket 3. Meanwhile, the inner sealing gasket 3 squeezes and presses the protrusion 14, which is embedded in the inner wall of the drainage ditch body 2. This achieves multi-point embedding and sealing operation, ensuring multi-point embedded compression sealing at the top position of the connection between the drainage ditch body 2 and the inner sealing gasket 3.

[0033] Example 4: In this technology, such as Figure 6 - Figure 8 The inclined pressure waterproof component shown includes: a pressure rod 15, which is fixedly installed on the lower surface of the pressure beam 4. A counterweight sleeve 16 is fixed to the outer wall of the pressure rod 15. A pressure sleeve 17 is connected to the bottom end of the counterweight sleeve 16. The counterweight sleeve 16 is used to counterweight the pressure sleeve 17. An inclined pressure strip 18 is fixedly installed at the bottom end of the pressure sleeve 17. The inclined pressure strip 18 is squeezed and connected to the inner sealing gasket 3. A pressing head 19 is embedded in the corner of the outer wall of the inclined pressure strip 18. The pressing head 19 is used to squeeze the inner sealing gasket 3. An outer insert strip 20 is fixed to the outer wall of the inner sealing gasket 3 near its corner.

[0034] When this technology is used, the pressure beam 4 presses down on multiple pressure rods 15, the pressure rods 15 compress the upper inclined surface of the inclined pressure strip 18, and at the same time the counterweight sleeve 16 compresses the pressure sleeve 17. The pressure sleeve 17 compresses the upper inclined surface of the inclined pressure strip 18. In this way, the upper inclined surface of the inclined pressure strip 18 is subjected to force and moves to the left to compress. In this way, the inclined pressure strip 18 compresses the pressing head 19, and the pressing head 19 compresses the inner corner of the inner wall of the inner sealing gasket 3. In this way, the outer corner of the inner sealing gasket 3 is compressed into the inner groove of the outer insert 20, which is used to compress and seal the bottom inner corner of the connection between the drainage ditch body 2 and the inner sealing gasket 3. The sealing effect is better and the drainage effect is improved.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A roof waterproofing and drainage modification structure for prestressed large roof panels, including a roof base layer (1), characterized in that: A drainage ditch (2) is provided on one side of the roof base layer (1); The modification component is installed on one side of the drainage ditch body (2); The inner sealing gasket (3) is pasted on the inner wall of the drainage ditch body (2); Two pressure beams (4) are both set above the drainage ditch body (2), and the inner wall of the pressure beams (4) is provided with embedded waterproof parts; The inclined pressure waterproof component is installed at the corner of the bottom end of the inner wall of the pressure beam (4); The modified component is used to reinforce one side of the drainage ditch body (2). The pressure beam (4) is used to counterweight and squeeze the embedded waterproof component, so that the embedded waterproof component squeezes and seals the top position of the connection between the drainage ditch body (2) and the inner sealing gasket (3). At the same time, the pressure beam (4) counterweight and obliquely presses the waterproof component, and the obliquely pressed waterproof component is used to squeeze and seal the corner position of the bottom inner wall of the connection between the drainage ditch body (2) and the inner sealing gasket (3).

2. The roof waterproofing and drainage modification structure for prestressed large roof panels according to claim 1, characterized in that: The inner sealing gasket (3) is made of silicone, and the drainage ditch body (2) is made of concrete.

3. The roof waterproofing and drainage modification structure for prestressed large roof panels according to claim 1, characterized in that: The modified components include: A top beam (5) is set on one side of the drainage ditch body (2). A brick parapet wall (6) is fixed at the bottom end of the top beam (5). The top beam (5) is used to counterweight and compress the brick parapet wall (6). The leveling base (7) is set on the lower layer of the brick parapet wall (6). Multiple new steel bars (8) are provided below the leveling base (7), and the outer wall of the new steel bars (8) is coated with a layer of fireproof coating (9).

4. The roof waterproofing and drainage modification structure for prestressed large roof panels according to claim 3, characterized in that: The lower surface of the capping beam (5) is higher than the upper surface of the brick parapet wall (6), and the upper surface of the leveling base (7) is set horizontally.

5. The roof waterproofing and drainage modification structure for prestressed large roof panels according to claim 3, characterized in that: Multiple new steel bars (8) are arranged sequentially from front to back, and the new steel bars (8) are arranged at an angle.

6. The roof waterproofing and drainage modification structure for prestressed large roof panels according to claim 1, characterized in that: The embedded waterproof component includes: Pressure pad (10) is fixed to the top of the inner wall of pressure beam (4), and the pressure pad (10) is fixedly connected to the drainage ditch body (2); A pressure column (11) is installed on one side of the inner wall of the pressure beam (4). An embedded protrusion (12) is provided below the pressure column (11). Both the embedded protrusion (12) and the pressure column (11) are fixedly connected to the pressure beam (4). Both the pressure column (11) and the embedded protrusion (12) are used to squeeze the inner sealing gasket (3). An embedded strip (13) is provided on one side of the inner sealing gasket (3). The embedded strip (13) is fixedly connected to the drainage ditch body (2). A raised strip (14) is provided on one side of the inner sealing gasket (3) and below the embedded strip (13). The raised strip (14) is fixedly connected to the inner sealing gasket (3).

7. The roof waterproofing and drainage modification structure for prestressed large roof panels according to claim 6, characterized in that: A gap is provided between the embedded strip (13) and the pressure column (11). The vertical cross-section of the pressure column (11) is circular, and the vertical cross-section of the embedded strip (13) is triangular.

8. The roof waterproofing and drainage modification structure for prestressed large roof panels according to claim 6, characterized in that: The inner strip (13) is positioned opposite to the tip direction of the embedded protrusion (12).

9. The roof waterproofing and drainage modification structure for prestressed large roof panels according to claim 1, characterized in that: The inclined pressure waterproof component includes: A pressure rod (15) is fixedly installed on the lower surface of the pressure beam (4). A counterweight sleeve (16) is fixed on the outer wall of the pressure rod (15). A pressure sleeve (17) is connected to the bottom end of the counterweight sleeve (16). The counterweight sleeve (16) is used to counterweight the pressure sleeve (17). An inclined pressure strip (18) is fixedly installed at the bottom end of the pressure sleeve (17), and the inclined pressure strip (18) is extruded and connected to the inner sealing gasket (3); A pressing head (19) is embedded in the corner of the outer wall of the inclined pressure strip (18). The pressing head (19) is used to squeeze the inner sealing gasket (3). An outer insert (20) is fixed on the outer wall of the inner sealing gasket (3) near its corner.

10. A method for constructing a roof waterproofing and drainage system for a prestressed large roof panel, using the roof waterproofing and drainage system for a prestressed large roof panel as described in any one of claims 1-9, characterized in that: The method includes the following steps: Step 1: Clean the roof base (1), insert multiple new steel bars (8) on one side and apply fireproof coating (9), and set up a leveling base (7) on top. Step 2: Build a brick parapet wall (6) on the leveled base (7), and install a capping beam (5) on top to form a drainage ditch (2); Step 3: Paste the inner sealing gasket (3) on the inner wall of the drainage ditch (2), and install the pressure beam (4) above it to squeeze the top of the sealing joint of the embedded waterproof component; Step 4: The pressure beam (4) drives the inclined pressure waterproof component to squeeze and seal the bottom corner of the connection between the drainage ditch body (2) and the inner sealing gasket (3).

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