Drawer type wind uncovering prevention canopy deformation joint

Abstract

The invention belongs to the technical field of constructional engineering. The drawer type wind-uncovering-preventing canopy deformation joint comprises a deformation joint structure and a rubber cover plate, the deformation joint structure is located at the oppositely-picking joint between a pair of canopy structural plates and comprises a pair of U-shaped pouring structural plates with opposite bottom faces and a concrete structure, the U-shaped pouring structural plates are arranged on corresponding canopy structural beams respectively, and the rubber cover plate is connected with the U-shaped pouring structural plates. The concrete structure is poured on the inner side of the U-shaped pouring structural plate, and a sliding gap is reserved between the top face of the concrete structure and the upper extending part of the U-shaped pouring structural plate. The rubber cover plate is in a C shape and comprises a top structure and L-shaped inner bending parts on the two sides, the cross sections of the L-shaped inner bending parts are in an L shape, the L-shaped inner bending parts can stretch into the sliding gaps and longitudinally slide, and the two sides of the top structure and the tops of the L-shaped inner bending parts are connected into a whole. The requirements for good structural integrity, small leakage and wind uncovering risks, convenient cover plate construction and low construction and maintenance cost are met at the same time.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, specifically relating to a "drawer-type" windproof and rainproof canopy expansion joint. Background Technology

[0002] For extra-long reinforced concrete canopies in building construction (such as those at railway stations and bus stations), expansion joints are usually required due to factors such as temperature and concrete shrinkage. After the joints are installed, it is necessary to address the issues of wind protection and leakage prevention.

[0003] Traditional reinforced concrete canopy expansion joint construction typically follows the same approach as roof expansion joints, using either lightweight metal covers or heavy-duty reinforced concrete covers. Metal covers are mechanically fixed by screws penetrating the concrete, which can damage the concrete through the holes. Rainwater can then corrode the reinforcing steel, and localized leaks can occur. Furthermore, mechanical fixing poses a risk of loosening in prolonged outdoor wind conditions, potentially leading to the entire cover being blown away. Reinforced concrete covers rely on their own weight for support, which is inconvenient to install and ineffective in handling strong winds. In summary, existing expansion joint protection technologies suffer from the following drawbacks: mechanical fixing of metal covers can cause structural damage through holes and carries risks of leakage and wind damage; reinforced concrete covers are inconvenient to install and have a certain risk of loosening; and construction and subsequent maintenance incur high economic costs. Summary of the Invention

[0004] The purpose of this invention is to provide a "drawer-type" windproof and uplift-proof awning expansion joint to solve the technical problems in the prior art that cannot simultaneously satisfy the requirements of good structural integrity, low risk of leakage and wind uplift, and convenient construction and maintenance of the cover plate.

[0005] The aforementioned "drawer-type" windproof canopy expansion joint includes an expansion joint structure and a rubber cover plate. The expansion joint structure is located at the cantilever joint between a pair of canopy structural panels, comprising a pair of U-shaped cast-in-place structural panels with opposite bottom surfaces and a concrete structure. The U-shaped cast-in-place structural panels are respectively set on the corresponding canopy structural beams, and the concrete structure is cast on the inner side of the U-shaped cast-in-place structural panels, with a sliding gap between the top surface of the concrete structure and the upper protruding part of the U-shaped cast-in-place structural panels. The rubber cover plate is C-shaped, including a top structure and two L-shaped inner curved parts on both sides. The cross-section of the L-shaped inner curved parts is L-shaped, allowing them to extend into the sliding gap and slide longitudinally. The two sides of the top structure are integrated with the top of the L-shaped inner curved parts, and the two sides of the rubber cover plate are attached to the side walls of the canopy surface layer on the canopy structural panels.

[0006] Preferably, one end of the expansion joint structure has a sliding opening and the other end has a canopy beam end sealing structure. The canopy beam end sealing structure is the end of the canopy structure beam perpendicular to the expansion joint structure. One end of the rubber cover plate is an end side sealing structure that matches the shape of the sliding opening. The end side sealing structure is attached to and seals the end of the rubber cover plate with each side of the sliding opening. The other end of the rubber cover plate is an unsealed end, which is sealed by the canopy beam end sealing structure after the rubber cover plate is installed.

[0007] Preferably, the bottom of the L-shaped inner bend is equipped with a rotatable roller at the unclosed end, and the top surface of the concrete structure located inside the U-shaped cast-in-place structural slab is provided with a groove, and the roller rolls in the groove to realize the sliding of the rubber cover plate.

[0008] Preferably, the unclosed end of the slide has a low-position groove with a bottom lower than the slide, so that when the rubber cover slides to the bottom to complete the installation, the roller falls into the low-position groove.

[0009] Preferably, the bottom of the L-shaped inner bend is provided with a limiting structure at the end position near the end sealing structure, and the slide groove is provided with a limiting groove at the position of sliding into the opening. When the rubber cover is installed, the limiting structure falls into the limiting groove.

[0010] Preferably, the top structure of the rubber cover has a herringbone-shaped top surface that slopes to both sides.

[0011] Preferably, the concrete structure located inside the U-shaped cast-in-place slab is constructed by filling the space between the inside of the U-shaped cast-in-place slab and the canopy surface with lightweight aggregate concrete, forming a chute to support the rollers.

[0012] Preferably, the rubber cover is made of high-modulus neutral silicone building sealant.

[0013] Preferably, the installation and construction process includes:

[0014] The first step is to fill the space between the inner side of the U-shaped cast-in-place structural slab and the canopy surface layer with lightweight aggregate concrete to form a concrete structure with grooves.

[0015] The second step is to transport the rubber cover plate to the site and slide the unclosed end of the rubber cover plate into the expansion joint structure through the sliding opening.

[0016] The third step is to slide the rubber cover to the bottom. The rollers at the unclosed end and the limiting structures near the end side sealing structure fall into the low grooves and limiting grooves at both ends of the slide groove, thereby achieving the pressure and fixation installation of the rubber cover.

[0017] The present invention has the following advantages:

[0018] 1. This invention eliminates the need for drilling holes in the cover plate on-site, preserving its structure and eliminating leakage risks. The cover plate is lightweight and slides in through a pre-drilled opening, guided by rollers for easy and quick installation and replacement. The rollers settle into the recessed area and secure the cover, completely eliminating the safety hazard of wind-induced uplift. Therefore, this solution simultaneously meets the requirements of good structural integrity, low leakage and wind-induced uplift risks, and convenient cover plate construction with low construction and maintenance costs.

[0019] 2. During on-site construction, this solution only requires the rubber cover manufacturer to ensure the product quality of the cover itself. The construction effect does not depend on the skills of on-site workers to achieve the desired structural efficiency. The material and structure of the rubber cover itself can meet the deformation and sealing requirements, ensuring long-term use and easy replacement, resulting in excellent overall cost and safety benefits. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the expansion joint structure of a "drawer-type" windproof and tear-off awning according to the present invention (the awning surface layer is not shown).

[0021] Figure 2 This is a cross-sectional view of the expansion joint structure in this invention.

[0022] Figure 3 This is a top view of the expansion joint structure in this invention.

[0023] Figure 4 for Figure 3 The cross-sectional view at position 1-1 in the structure shown.

[0024] Figure 5 for Figure 3 The cross-sectional view at position 2-2 in the structure shown.

[0025] Figure 6 for Figure 3 The cross-sectional view at position 3-3 in the structure shown.

[0026] Figure 7 This is a schematic diagram of the structure of the canopy in this invention.

[0027] The attached reference numerals include: 1 canopy structural panel, 2 rubber cover plate, 21 end side sealing structure, 22 L-shaped inner bend, 23 top structure, 24 roller, 3 concrete structure, 31 chute, 32 low-position groove, 33 limiting groove, 4 canopy structural beam, 5 canopy beam end sealing structure, 6 canopy surface layer, 7 U-shaped cast-in-place structural panel, and 8 canopy structural column. Detailed Implementation

[0028] The following description of the embodiments, in conjunction with the accompanying drawings, provides a more detailed explanation of the specific implementation of the present invention, in order to help those skilled in the art to have a more complete, accurate, and in-depth understanding of the inventive concept and technical solution of the present invention.

[0029] like Figures 1-7 As shown, the present invention provides a "drawer-type" windproof canopy expansion joint, including an expansion joint structure and a rubber cover plate 2. The expansion joint structure is located at the cantilever joint between a pair of canopy structural plates 1, including a pair of U-shaped cast-in-place structural plates with opposite bottom surfaces and a concrete structure 3. The U-shaped cast-in-place structural plates are respectively set on the corresponding canopy structural beams 4. The concrete structure 3 is cast on the inner side of the U-shaped cast-in-place structural plates, and a sliding gap is left between the top surface of the concrete structure 3 and the upper protrusion of the U-shaped cast-in-place structural plates. The rubber cover plate 2 is C-shaped, including a top structure 23 and L-shaped inner curved parts on both sides. The cross-section of the L-shaped inner curved parts is L-shaped, which can extend into the sliding gap and slide longitudinally. The two sides of the top structure 23 are integrated with the top of the L-shaped inner curved parts. The two sides of the rubber cover plate 2 are attached to the side walls of the canopy surface layer 6 on the canopy structural plate 1. In this way, the elastic rubber cover 2 is used to fit tightly between the canopy surface layer 6 and the canopy structural beam 4, etc., to prevent rainwater from seeping under the expansion joint. The deformable rubber cover itself can also adapt to the changes in the distance and shape of the expansion joint caused by temperature and climate.

[0030] The expansion joint structure has a sliding opening at one end and a canopy beam end sealing structure 5 at the other end. The canopy beam end sealing structure 5 is the end of the canopy structure beam 4 perpendicular to the expansion joint structure. One end of the rubber cover plate 2 is an end side sealing structure 21 that matches the shape of the sliding opening. The end side sealing structure 21 fits and seals the end of the rubber cover plate 2 with each side of the sliding opening. The other end of the rubber cover plate 2 is an unsealed end, which is sealed by the canopy beam end sealing structure 5 after the rubber cover plate 2 is installed. This structure achieves sealing at both ends of the rubber cover plate 2, preventing rainwater from entering the gap between the rubber cover plate 2 and the expansion joint structure from the end, facilitating maintenance and replacement, and preventing leakage and air ingress, thus providing wind resistance.

[0031] The bottom of the L-shaped inner bend is equipped with a rotatable roller 24 at the unclosed end. A groove 31 is provided on the top surface of the concrete structure 3 located inside the U-shaped cast-in-place slab. The roller 24 rolls within the groove 31 to allow the rubber cover plate 2 to slide. At the unclosed end of the groove 31, a low-position groove 32 is provided, with its bottom lower than the groove 31 itself. When the rubber cover plate 2 slides to the bottom and is installed, the roller 24 falls into the low-position groove 32, providing a limiting effect. This structure allows for convenient pressing of the rubber cover plate 2 after sliding. Once fixed, the rubber cover plate 2 is not prone to slippage due to the close contact with other structures. Even under vibration, it is difficult for the roller 24 to detach from the low-position groove 32, resulting in good installation reliability and excellent wind resistance.

[0032] The bottom of the L-shaped inner bend has a limiting structure near the end of the end sealing structure 21. This limiting structure can be a rotatable roller 24 or a smooth protrusion. The slide groove 31 has a limiting groove 33 at the sliding opening. When the rubber cover 2 is installed, the limiting structure falls into the limiting groove 33, providing a limiting effect. This further enhances installation reliability and wind resistance.

[0033] The top structure 23 of the rubber cover plate 2 has a herringbone-shaped top surface that slopes to both sides. The concrete structure 3 located inside the U-shaped cast-in-place structure plate uses lightweight aggregate concrete to fill the space between the inside of the U-shaped cast-in-place structure plate and the canopy surface layer 6, forming a groove 31 to support the roller 24.

[0034] The installation process for the expansion joint of the "drawer-type" windproof and rainproof awning is as follows:

[0035] The first step is to prepare for the construction of the rubber cover plate 2. At the joint between the canopy and the canopy, lightweight aggregate concrete is used to fill the space between the inner side of the U-shaped cast-in-place structural slab and the canopy surface layer 6, forming a concrete structure 3 with a groove 31. The rubber cover plate 2, which meets the size requirements, is prefabricated in the factory.

[0036] The second step is to transport the rubber cover plate 2 to the site and slide the unclosed end of the rubber cover plate 2 into the expansion joint structure through the sliding opening. Ensure that the roller 24 falls into the corresponding groove 31 to better control the sliding direction of the rubber cover plate 2 and reduce sliding resistance.

[0037] The third step is to slide the rubber cover plate 2 to the bottom. At this time, the roller 24 at the unclosed end and the limiting structure near the end side sealing structure 21 fall into the low groove 32 and the limiting groove 33 at both ends of the slide groove 31, forming a pressure on the rubber cover plate 2. The end side sealing structure 21 closes the sliding opening, completing the installation of the rubber cover plate 2.

[0038] The dismantling and construction process of the expansion joint of the "drawer-type" windproof and rainproof awning is as follows:

[0039] Step 1: Lift the rubber cover plate 2 upward from the end side sealing structure 21 and pull it towards the opening to allow the roller 24 to disengage from the low groove 32.

[0040] The second step is to slide the rubber cover plate 2 out of the sliding opening by using the roller 24 sliding in the groove 31.

[0041] If the rubber cover plate 2 needs to be replaced, after removing the old rubber cover plate 2 and cleaning the expansion joint structure, the new rubber cover plate 2 should be installed into the expansion joint structure according to the installation process.

[0042] Rubber cover plate 2 is made of high-modulus neutral silicone building sealant, which has high displacement capacity and can meet deformation requirements. It is also lightweight and easy to install. The material of rubber cover plate 2 conforms to the current standard GB / T14683-2017 "Silicone and Modified Silicone Building Sealants," which has mature and reliable regulations on the physical and chemical properties and test methods of silicone building sealants. After being prepared and tested in the factory, it can be transported to the site for installation.

[0043] Based on existing standards and practical applications, high-modulus neutral silicone building sealant typically has a service life of 10-15 years under normal use conditions, as detailed in Table 1. The specific lifespan of the rubber cover plate 2 depends on environmental and maintenance conditions; within the building's design service life (50 years), it is expected to be replaced 23-5 times. This invention only requires replacing the finished rubber cover plate 2, simplifying maintenance and offering superior overall cost and safety benefits.

[0044] Table 1: Comparison of the service life of sealants in existing technologies

[0045]

[0046] The canopy structure includes a canopy structural slab 1 and canopy structural beams 4 located around the canopy structural slab 1. The bottom of the canopy structural slab 1 is supported by canopy structural columns 8. The canopy structural slab 1, canopy structural beams 4 and canopy structural columns 8 are all reinforced concrete structures 3. The U-shaped cast-in-place structural slab is also a reinforced concrete structure 3.

[0047] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A "drawer" weatherproof canopy distortion joint, characterized by: The system includes an expansion joint structure and a rubber cover. The expansion joint structure is located at the cantilever joint between a pair of canopy structural slabs and includes a pair of U-shaped cast-in-place structural slabs with opposite bottom surfaces and a concrete structure. The U-shaped cast-in-place structural slabs are respectively set on the corresponding canopy structural beams, and the concrete structure is cast on the inner side of the U-shaped cast-in-place structural slabs. A sliding gap is left between the top surface of the concrete structure and the upper protrusion of the U-shaped cast-in-place structural slabs. The rubber cover is C-shaped and includes a top structure and two L-shaped inner curved parts on both sides. The cross-section of the L-shaped inner curved parts is L-shaped, which can extend into the sliding gap and slide longitudinally. The two sides of the top structure are integrated with the top of the L-shaped inner curved parts, and the two sides of the rubber cover are attached to the side walls of the canopy surface layer on the canopy structural slabs.

2. A "drawer-type" weatherproof shelter grommet according to claim 1, characterized in that: One end of the expansion joint structure has a sliding opening, while the other end has a canopy beam end sealing structure. The canopy beam end sealing structure is the end of the canopy structural beam perpendicular to the expansion joint structure. One end of the rubber cover plate is an end side sealing structure that matches the shape of the sliding opening. The end side sealing structure fits and seals the end of the rubber cover plate with each side of the sliding opening. The other end of the rubber cover plate is an unsealed end, which is sealed by the canopy beam end sealing structure after the rubber cover plate is installed.

3. A "drawer-type" weatherproof shelter grommet according to claim 2, characterized in that: The bottom of the L-shaped inner bend is equipped with a rotatable roller at the unclosed end. The top surface of the concrete structure located inside the U-shaped cast-in-place slab is provided with a groove, and the roller rolls in the groove to achieve the sliding of the rubber cover plate.

4. A "drawer-type" weatherproof shelter grommet according to claim 3, characterized in that: The unclosed end of the slide has a low-position groove with a bottom lower than the slide. When the rubber cover slides to the bottom to complete the installation, the roller falls into the low-position groove.

5. A "drawer-type" weatherproof shelter grommet according to claim 3, characterized in that: The bottom of the L-shaped inner bend is provided with a limiting structure at the end position near the end sealing structure, and the slide groove is provided with a limiting groove at the position of sliding into the opening. When the rubber cover is installed, the limiting structure falls into the limiting groove.

6. A "drawer-type" weatherproof shelter grommet according to claim 1, characterized in that: The top structure of the rubber cover has a herringbone-shaped top surface that slopes to both sides.

7. The "drawer-type" windproof and rainproof awning expansion joint according to claim 1, characterized in that: The concrete structure located inside the U-shaped cast-in-place slab uses lightweight aggregate concrete to fill the space between the inside of the U-shaped cast-in-place slab and the canopy surface, forming a chute to support the rollers.

8. The "drawer-type" windproof and rainproof awning expansion joint according to claim 1, characterized in that: The rubber cover is made of high-modulus neutral silicone building sealant.

9. The "drawer-type" windproof and rainproof awning expansion joint according to claim 1, characterized in that: The installation and construction process includes: The first step is to fill the space between the inner side of the U-shaped cast-in-place structural slab and the canopy surface layer with lightweight aggregate concrete to form a concrete structure with grooves. The second step is to transport the rubber cover plate to the site and slide the unclosed end of the rubber cover plate into the expansion joint structure through the sliding opening. The third step is to slide the rubber cover to the bottom. The rollers at the unclosed end and the limiting structures near the end side sealing structure fall into the low grooves and limiting grooves at both ends of the slide groove, thereby achieving the pressure and fixation installation of the rubber cover.

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