Waterproof structure of building prefabricated roof joint and construction method

Abstract

The application relates to the technical field of isolation facilities of roof coverings, improves the problem that current prefabricated roof joints are prone to water leakage, and discloses a waterproof structure of a building prefabricated roof joint and a construction method, which comprise prefabricated roof panels and waterproof sealing components arranged between two adjacent roof panels. One side of the roof panel is provided with a positioning groove, and the other side of the roof panel is provided with a positioning block corresponding to the positioning groove. The waterproof sealing component comprises sealing strips which are arranged in the positioning groove at intervals, a matching space is formed between the two sealing strips, the bottom of the positioning block is provided with a sealing block which is inserted into the matching space, and elastic members are further arranged on the two sides of the sealing block. When the sealing block enters the matching space, the elastic members drive the sealing strips to fill the gap between the two roof panels. The application can improve the waterproof capacity of the roof joint.

Description

Technical Field

[0001] This application relates to insulation facilities for roof coverings, and more particularly to a waterproof structure and construction method for joints in prefabricated roofs. Background Technology

[0002] With the development of modern industrial technology, prefabricated modular buildings have been gradually promoted around the world due to their fast construction speed and low cost.

[0003] For prefabricated assembled roof structures, if the roof area is large, it is difficult to cover it directly with a single roof panel. Depending on the size of the roof, two or even more roof panels may be used. During the assembly of the roof panels, the joints are often the weakest points and are prone to water leakage. Summary of the Invention

[0004] In order to improve the problem of water leakage at the joints of current prefabricated roof structures, this application provides a waterproof structure and construction method for the joints of prefabricated roofs.

[0005] In a first aspect, this application provides a waterproof structure for the joints of prefabricated building roofs, employing the following technical solution: A waterproof structure for prefabricated roof joints includes prefabricated roof panels and a waterproof sealing assembly disposed between two adjacent roof panels. One side of each roof panel has a positioning groove, and the other side has a positioning block corresponding to the positioning groove. The waterproof sealing assembly includes sealing strips spaced apart within the positioning grooves, with a mating space formed between the two sealing strips. The bottom of each positioning block has a sealing block inserted into the mating space. Elastic elements are also provided on both sides of each sealing block. When the sealing block enters the mating space, the elastic elements drive the sealing strips to fill the gap between the two roof panels.

[0006] By adopting the above technical solution, the two roof panels are connected through the cooperation of the positioning block and the positioning groove on the roof panel. In use, the sealing block at the bottom of the positioning block is inserted into the mating space, and the elastic element will squeeze the sealing strip towards the side of the positioning groove, thereby pressing it against the side wall of the roof panel and reducing the possibility of water leakage from the side wall of the roof panel.

[0007] Optionally, the elastic element is an arched spring sheet, with the arched top of the spring sheet facing away from the sealing block.

[0008] By adopting the above technical solution, the arched spring sheet will not affect the initial direct insertion of the sealing block into the mating space. At the same time, the arched structure allows the force application point of the spring sheet to be concentrated in the middle of the sealing strip, so that the middle of the sealing strip can deform to the upper and lower ends, thereby improving the sealing effect on the upper end of the sealing strip.

[0009] Optionally, both ends of the spring sheet are pre-embedded and fixed within the sealing block.

[0010] By adopting the above technical solution, both ends of the spring sheet are pre-embedded and fixed in the sealing block, thereby preventing the spring sheet from separating from the sealing block during deformation.

[0011] Optionally, the positioning block is provided with a grouting hole, and the outlet of the grouting hole is aligned with the mating space.

[0012] By adopting the above technical solution, and through the setting of grouting holes, concrete can be injected into the mating space after the sealing strip is squeezed, thereby filling the gap in the mating space and avoiding the decrease in the squeezing effect of the sealing strip after the spring plate loses its elasticity.

[0013] Optionally, a support member is provided on the bottom surface of the positioning groove within the mating space, the bottom end of the sealing block abuts against the support member, and the outlet of the grouting hole is located at the bottom of the sealing block and does not contact the support member.

[0014] By adopting the above technical solution and setting support components, a gap can be created between the bottom of the sealing block and the bottom of the positioning groove, making it less likely for the grouting hole to become blocked when concrete is poured in.

[0015] Optionally, reinforcing bars are pre-embedded in the roof panel, and the top of the reinforcing bars protrudes through the positioning groove to form the support member.

[0016] By adopting the above technical solution, the steel bars are pre-embedded in the roof panel and protrude from the bottom surface of the positioning groove to form a support, which ensures the integrity of the support and the roof panel. When the concrete encases the steel bars, a reinforced concrete structure can also be formed, which improves the overall connection strength.

[0017] Optionally, the spring sheet may have a slurry-filled hole.

[0018] By adopting the above technical solution, the setting of the grout passage hole can avoid the spring sheet from affecting the concrete pouring.

[0019] Optionally, the grout passage hole on the spring sheet is located at the upper end of the arched structure of the spring sheet, and the sealing block also has the outlet of the grouting hole on both sides.

[0020] By adopting the above technical solution, since the spring sheet has an overall arched structure, the grout passage hole is opened at the upper end of the arched structure of the spring sheet. This makes the lower end of the arched structure stronger than the upper end, allowing the spring sheet to apply elastic force obliquely upward when deformed. This allows the upper end of the sealing strip to be subjected to greater compressive force, improving the sealing effect of the upper end of the sealing strip on the gap between the roof panels. Concrete can flow out from both sides of the sealing block, enter the interior of the spring sheet, and then flow upward into the mating space through the grout passage hole.

[0021] Optionally, there is a gap between two adjacent roof panels, and a vent hole is provided on the positioning block. One end of the vent hole is aligned with the gap between the two roof panels, and the other end is aligned with the upper end of the spring sheet.

[0022] By adopting the above technical solution, it is ensured that the air in the space can be released during the concrete pouring process, thus avoiding the formation of a large number of air pores in the solidified concrete; at the same time, the concrete pouring stops after it seeps into the gap between the two roof panels, and the concrete can form a concrete protrusion at the gap between the two roof panels, so that the height of this position is higher than the surface of the roof panel, preventing water accumulation at the gap between the roof panels, thereby improving the overall waterproof effect.

[0023] Secondly, this application provides a construction method for a waterproof structure of precast roof joints, employing the following technical solution: A construction method for a waterproof structure of precast roof joints includes the following specific steps: S1. A precast roof panel, wherein the roof panel has positioning grooves on both sides and positioning blocks that cooperate with the positioning grooves. Two sealing strips are provided on the positioning grooves at intervals, and a cooperation space is formed between the two adjacent sealing strips. A sealing block for insertion into the cooperation space is provided at the bottom of the positioning block, and elastic elements are provided on both sides of the sealing block. S2. The positioning blocks of adjacent roof panels are matched with the positioning grooves to achieve splicing between the two roof panels, and the sealing block is inserted into the matching space; S3. The positioning block is provided with grouting holes and venting holes. The outlet of the grouting hole is aligned with the mating space. One end of the outlet of the venting hole is aligned with the gap between the two roof panels, and the other end is aligned with the upper end of the elastic element. Concrete is poured into the grouting hole on the positioning block until the concrete seeps out from the gap between the two adjacent roof panels. After the seeping concrete solidifies, it forms a concrete protrusion.

[0024] By adopting the above technical solution, the two roof panels are connected through the cooperation of the positioning block and the positioning groove on the roof panel. In use, the sealing block at the bottom of the positioning block is inserted into the mating space, and the elastic element will squeeze the sealing strip towards the side of the positioning groove, thereby pressing it against the side wall of the roof panel and reducing the possibility of water leakage from the side wall of the roof panel.

[0025] In summary, this application includes at least one of the following beneficial effects: 1. By cooperating with the positioning block and positioning groove on the roof panel, the two roof panels can be connected. In use, the sealing block at the bottom of the positioning block is inserted into the mating space. The elastic element will squeeze the sealing strip towards the side of the positioning groove, thereby pressing it against the side wall of the roof panel and reducing the possibility of water leakage from the side wall of the roof panel. 2. The arched spring sheet can concentrate the force of the spring sheet in the middle of the sealing strip, so that the middle of the sealing strip can deform to the upper and lower ends, thereby improving the sealing effect on the upper end of the sealing strip; 3. The grout passage is opened at the upper end of the arched structure of the spring sheet, so that the lower end of the arched structure is stronger than the upper end. This allows the spring sheet to apply elastic force obliquely upward when deformed, so that the upper end of the sealing strip can be subjected to greater compressive force, thereby improving the sealing effect of the upper end of the sealing strip on the gap between the roof panels. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure after two adjacent roof panels are joined together in an embodiment of this application; Figure 2 This is a schematic diagram highlighting the structure at the roof panel positioning block in the embodiments of this application; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure after two adjacent roof panels are joined and concrete is poured in an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Roof panel; 11. Positioning groove; 12. Positioning block; 121. Grouting hole; 122. Vent hole; 13. Sealing strip; 14. Fitting space; 15. Sealing block; 16. Elastic element; 161. Grouting hole; 17. Support element; 18. Concrete protrusion. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail. Example 1

[0029] Reference Figure 1This application discloses a waterproof structure for the joint of a prefabricated roof, including at least two roof panels 1 spliced ​​together in sequence and a waterproof sealing component disposed between two adjacent roof panels 1.

[0030] One side of the roof panel 1 is provided with a positioning groove 11, and the opposite side of the adjacent roof panel 1 is provided with a positioning block 12 that cooperates with the positioning groove 11. The positioning of the two adjacent roof panels 1 is achieved by the cooperation of the positioning groove 11 and the positioning block 12.

[0031] The waterproof sealing assembly includes two sealing strips 13 spaced apart on the positioning groove 11. The two sealing strips 13 extend along the side of the roof panel 1 in a long strip shape, and are located at opposite ends of the positioning groove 11. The height of the sealing strips 13 is less than the depth of the positioning groove 11. When the positioning block 12 engages with the positioning groove 11, the lower end of the positioning block 12 first abuts against the upper end of the sealing strip 13, thereby achieving a seal between two adjacent roof panels 1.

[0032] The gap between the two sealing strips 13 forms a mating space 14, and a sealing block 15 is provided at the bottom of the positioning block 12, which is inserted into the mating space 14 between the two sealing strips 13. When the sealing block 15 is inserted into the mating space 14, the sealing block 15 and the sealing strips 13 cooperate to form a labyrinth structure, which improves the overall sealing effect.

[0033] Reference Figure 2 and Figure 3 Furthermore, elastic elements 16 are provided on both sides of the sealing block 15. After the sealing block 15 is inserted into the mating space 14, the elastic elements 16 will drive the sealing strip 13 to move away from the sealing block 15, so that the sealing strip 13 can further fill the gap between the two roof panels 1.

[0034] In this embodiment, the elastic element 16 is a metal spring sheet, with both ends of the spring sheet pre-embedded and fixed within the sealing block 15. The spring sheet has a normal state and a compressed state. In the normal state, the spring sheet has an arched structure, with the top of the arch facing away from the sealing block 15; in the compressed state, the spring sheet is deformed by compression, thereby providing a compressive force towards the sealing strip 13. During the insertion of the sealing block 15 into the mating space 14, the arched spring sheet not only does not affect the normal insertion and removal of the sealing block 15, but also guides and corrects the insertion of the sealing block 15, facilitating its entry into the mating space 14.

[0035] Reference Figure 1 and Figure 4Furthermore, the top of the positioning block 12 is provided with a grouting hole 121, which penetrates the sealing block 15, and the outlet of the grouting hole 121 is located at the bottom of the sealing block 15. After the sealing block 15 is inserted into the mating space 14, the spring sheet will compress the sealing strip 13, thereby causing the sealing strip 13 to deform in the direction of the mating gap between the positioning block 12 and the positioning groove 11. At this time, by injecting concrete into the grouting hole 121, the concrete can fill the gap after the deformation of the sealing strip 13, and at the same time wrap the spring sheet to prevent the sealing strip 13 from rebounding and weakening the sealing effect due to the weakening of the spring sheet's elasticity.

[0036] To prevent the bottom of the grouting hole 121 from being blocked and causing grouting difficulties, a support member 17 is provided at the bottom of the positioning groove 11 between the two sealing strips 13. When the sealing block 15 abuts against the support member 17, there is a gap between the bottom of the grouting hole 121 and the bottom of the positioning groove 11. The support member 17 is formed by steel bars pre-embedded in the roof panel 1, with the top of the steel bars protruding from the bottom surface of the positioning groove 11 to form the support member 17. After the concrete solidifies, it will also wrap around the steel bars to form a reinforced concrete structure.

[0037] To prevent the spring sheet from obstructing concrete from entering the mating space 14, a grout passage hole 161 is provided on the spring sheet for concrete to pass through. In this embodiment, the grout passage hole 161 is located at the upper end of the arched structure of the spring sheet. This results in the lower end of the arched structure of the spring sheet having a higher strength than the upper end, allowing the spring sheet to apply an upward-sloping elastic force when it is deformed. This enables the upper end of the sealing strip 13 to exert greater compressive force, improving the sealing effect between the upper end of the sealing strip 13 and the roof panel 1.

[0038] The sealing block 15 also has grouting holes 121 on both sides, which facilitates the concrete to enter the arched area of ​​the spring sheet, and then enters the space at the upper end of the spring sheet through the grouting hole 161.

[0039] In addition, to ensure that air can escape from the space 14 during concrete pouring and to prevent the formation of numerous air pockets in the solidified concrete, the positioning block 12 is further provided with ventilation holes 122. Multiple ventilation holes 122 are spaced along the direction of the positioning block 12. One end of each ventilation hole 122 extends laterally through the side wall of the positioning block 12, and the other end points downwards towards the upper end of the elastic sheet. A gap exists between adjacent roof panels 1, facilitating the expulsion of air from the ventilation holes 122. Simultaneously, the ventilation holes 122 also serve as a concrete outflow channel. After the concrete is poured into the space 14, it overflows upwards from the gap between the adjacent roof panels 1, completing the concrete pouring. The concrete overflowing from the gap between the adjacent roof panels 1 solidifies and forms a concrete protrusion 18 between the two roof panels 1, ensuring that the joint of the two roof panels 1 is higher than the surface of the roof panels 1, preventing water from flowing into the roof from the joint.

[0040] The implementation principle of a waterproof structure for prefabricated roof joints in this application embodiment is as follows: After aligning the positioning block 12 on roof panel 1 with the positioning groove 11 on the adjacent roof panel 1, the sealing block 15 at the bottom of the positioning block 12 can enter the mating space 14 between the two sealing strips 13. The splicing between the two roof panels 1 is completed when the bottom end of the sealing block 15 abuts against the support member 17. The spring sheet squeezes the sealing strip 13 to deform to both sides, improving the sealing effect at the joint and increasing the gap in the mating space 14. Then, concrete is poured into the grouting hole 121 on the positioning block 12. After the concrete fills the mating space 14, it overflows from the vent hole 122. The pouring stops when the concrete overflows to the joint of the two roof panels 1. The overflowing concrete forms a concrete protrusion 18, making the height of the joint higher than the surface of the roof panel 1, thus preventing water from flowing into the joint. Example 2

[0041] A construction method for a waterproof structure at the joints of a precast roof, using the waterproof structure described in Example 1, includes the following specific steps: A prefabricated roof panel 1 is provided, and during the prefabrication process, positioning grooves 11 and positioning blocks 12 that cooperate with the positioning grooves 11 are respectively provided on both sides of the roof panel 1.

[0042] The positioning block 12 of the adjacent roof panel 1 is matched with the positioning groove 11 to realize the splicing between the two roof panels 1, so that the sealing block 15 is inserted into the matching space 14. The spring plates on both sides of the sealing block 15 will squeeze the sealing strip 13 to deform to both sides, thereby better filling the gap between the two roof panels 1. Concrete is poured into the grouting holes 121 on the positioning block 12, filling the mating space 14 and wrapping the reinforcing bars and spring sheets. The pouring of concrete is stopped when the concrete seeps out from the vent holes 122 to the top of the roof panel 1. After the concrete has solidified, concrete protrusions 18 will form at the gaps between the roof panels 1, making it less likely for water to accumulate at the gaps between the two roof panels 1, thus improving the waterproofing ability.

[0043] 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 waterproof structure for the joints of prefabricated building roofs, characterized in that: The system includes prefabricated roof panels (1) and a waterproof sealing assembly disposed between two adjacent roof panels (1). One side of each roof panel (1) has a positioning groove (11), and the other side has a positioning block (12) corresponding to the positioning groove (11). The waterproof sealing assembly includes sealing strips (13) spaced apart within the positioning grooves (11), forming a mating space (14) between the two sealing strips (13). The bottom of each positioning block (12) has a sealing block (15) inserted into the mating space (14). Elastic elements (16) are also provided on both sides of each sealing block (15). When the sealing block (15) enters the mating space (14), the elastic elements (16) cause the sealing strips (13) to fill the gap between the two roof panels (1). The elastic element (16) is an arched spring sheet, with the arched top of the spring sheet facing away from the sealing block (15); The positioning block (12) has a grouting hole (121) and the outlet of the grouting hole (121) is aligned with the mating space (14).

2. The waterproof structure for prefabricated roof joints according to claim 1, characterized in that: The two ends of the spring sheet are pre-embedded and fixed in the sealing block (15).

3. The waterproof structure for prefabricated roof joints according to claim 1, characterized in that: The bottom surface of the positioning groove (11) is provided with a support member (17) in the mating space (14). The bottom end of the sealing block (15) abuts against the support member (17). The outlet of the grouting hole (121) is located at the bottom of the sealing block (15) and does not contact the support member (17).

4. The waterproof structure for prefabricated roof joints according to claim 3, characterized in that: The roof panel (1) is pre-embedded with reinforcing bars, and the top of the reinforcing bars passes through the positioning groove (11) to form the support member (17).

5. The waterproof structure for prefabricated roof joints according to claim 1, characterized in that: The spring sheet has a slurry hole (161).

6. The waterproof structure for prefabricated roof joints according to claim 5, characterized in that: The grout passage hole (161) on the spring sheet is located at the upper end of the arched structure of the spring sheet, and the sealing block (15) also has the outlet of the grouting hole (121) on both sides.

7. A waterproof structure for prefabricated roof joints according to claim 6, characterized in that: There is a gap between two adjacent roof panels (1), and a ventilation hole (122) is provided on the positioning block (12). One end of the ventilation hole (122) is aligned with the gap between the two roof panels (1), and the other end is aligned with the upper end of the spring sheet.

8. A construction method for a waterproof structure of precast roof joints, characterized in that: The specific steps include the following: S1. Precast roof panel (1), the roof panel (1) has a positioning groove (11) on both sides and a positioning block (12) that cooperates with the positioning groove (11). The positioning groove (11) is provided with two spaced sealing strips (13), and a cooperation space (14) is formed between the two adjacent sealing strips (13). The bottom of the positioning block (12) is provided with a sealing block (15) for insertion into the cooperation space (14). The sealing block (15) is also provided with elastic elements (16) on both sides. S2. The positioning block (12) of the adjacent roof panel (1) is matched with the positioning groove (11) to realize the splicing between the two roof panels (1), and the sealing block (15) is inserted into the matching space (14); S3. The positioning block (12) is provided with a grouting hole (121) and a vent hole (122). The outlet of the grouting hole (121) is aligned with the mating space (14). One end of the outlet of the vent hole (122) is aligned with the gap between the two roof panels (1) and the other end is aligned with the upper end of the elastic member (16). Concrete is poured into the grouting hole (121) on the positioning block (12) until the concrete seeps out from the gap between the two adjacent roof panels (1). After the seeping concrete solidifies, it forms a concrete protrusion (18).

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