Construction structure and construction method of super-large swimming pool deformation joint
By using adjustment components and telescopic components in the deformation joints of super-large swimming pools, combined with self-adhesive waterproof membranes and rubber waterstops, the problems of width adjustment and waterproofing in the construction of deformation joints of super-large swimming pools are solved, the construction quality and aesthetics are improved, and the requirements of green construction are met.
Patent Information
- Application Number
- CN202411465509.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2044-10-21
AI Technical Summary
The existing swimming pool expansion joint construction method is difficult to adjust the width in super-large swimming pools, resulting in damage to the waterproof structure, affecting the appearance and use, and failing to effectively prevent leakage.
The use of adjustment components and telescopic components, combined with self-adhesive waterproof membranes and rubber waterstops, and filled with elastic silicone structural adhesive ensures that the main body of the expansion joint can adapt to temperature changes and prevent cracking and leakage.
Adaptive adjustment of the deformation joints of super-large swimming pools is achieved, ensuring waterproof effect, avoiding arching or cracking of mosaics, improving construction quality and aesthetics, and meeting green construction requirements.
Smart Images

Figure CN119352813B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of building construction, in particular to a super-large swimming pool deformation joint construction structure and a construction method thereof. BACKGROUND
[0002] The existing swimming pool expansion joint is prone to deformation under the influence of temperature, and if it cannot be freely adjusted, it will cause the upper mosaic to arch or crack, affecting the appearance and use of the swimming pool. At the same time, the waterproof quality at the deformation joint is crucial, and if leakage occurs, it will not only affect the normal use of the swimming pool, but also may cause damage to the swimming pool structure.
[0003] In combination with the prior art, it is found that the traditional swimming pool deformation joint construction method often fails to meet the quality and functional requirements when dealing with the complex situation of super-large swimming pools. It cannot be adjusted according to the width between different deformation joints, and often needs to be customized with different width cover plates and other components in the factory according to different sites. At the same time, when the deformation joint part deforms, it cannot be adjusted, which may cause damage to the waterproof structure, water leakage in the deformation joint, and even cause the building to be soaked in water. SUMMARY
[0004] The purpose of the present application is to provide a super-large swimming pool deformation joint construction structure and a construction method thereof to solve the problems raised in the background.
[0005] The technical scheme of the present application is: a super-large swimming pool deformation joint construction structure, comprising a concrete bottom plate, a deformation joint body is arranged on the inner side of the concrete bottom plate, a self-adhesive waterproof coiled material is arranged on the inner side of the deformation joint body at the upper end position, a rubber waterstop is arranged on the upper side of the self-adhesive waterproof coiled material, two bases are symmetrically arranged on the upper end of the deformation joint body, a panel is arranged on the upper side of the two bases, further comprising: an adjusting assembly and an expansion assembly, the adjusting assembly is arranged between the two bases, the expansion assembly is arranged on the inner side of the two bases, the adjusting assembly comprises a fixed block fixed to the lower side of the panel, two slide rods fixed to one end of the two bases, the two slide rods are respectively connected to the inner side of the fixed block through sliding, a screw rod is rotatably connected to the inner side upper end of the fixed block through threads, a driving cone pulley is fixed to the lower end of the screw rod, a driven cone pulley is fixed to one end of each of the two slide rods and abuts against the driving cone pulley, an installation plate is fixed to the outer side of each of the two slide rods, a spring one is sleeved on the outer side of each of the two slide rods, one end of each of the two spring ones is fixed to the inner side of the fixed block, and the other end of each of the two spring ones is fixed to one side of each of the two installation plates.
[0006] Preferably, the telescopic assembly comprises two moving plates slidingly arranged inside two bases, one end of the two moving plates is fixed with the self-adhesive waterproof coiled material and the rubber waterstop through screws, and the other end of the two moving plates is fixed with a plurality of spring threes at equal intervals, the other end of the plurality of spring threes is fixed to the inner wall of the two bases, the inner side of the two bases is symmetrically fixed with two fixed frames, the inner side of the plurality of fixed frames is fixed with guide rods, and the inner side of the plurality of fixed frames is provided with a plurality of sliding grooves, the inner side of the plurality of sliding grooves is slidingly provided with a plurality of sliding blocks, the plurality of sliding blocks is slidingly arranged outside the plurality of guide rods, the outer side of the plurality of guide rods is sleeved with a plurality of spring twos, one end of the plurality of spring twos is fixed with one side of the plurality of sliding blocks, and the other end of the plurality of spring twos is fixed to the inner side of the plurality of fixed frames.
[0007] Preferably, the inner side of the deformed joint body is provided with a foam plate at the bottom end, and waterproof mortar is poured on the inner side of the deformed joint body above the foam plate.
[0008] Preferably, the inner side of the screw rod and one end of the two moving plates are filled with elastic silicone structural glue.
[0009] Preferably, the two ends of the panel are fixedly connected with the concrete bottom plate through expansion bolts.
[0010] Preferably, the upper end of the screw rod is fixed with a five-corner handle.
[0011] Preferably, the two bases and the panel are made of aluminum alloy material.
[0012] Preferably, the self-adhesive waterproof coiled material and the rubber waterstop are arranged in a U shape.
[0013] The application also discloses a construction method of the super-large swimming pool deformed joint construction structure.
[0014] Step one: manually clean the deformed joint body, wash with water, make sure there is no dust, provide a clean working surface, use waterproof mortar to plaster, layer by layer, bottom, and make it into a concave arc shape, the thinnest part in the middle is not less than three centimeters thick;
[0015] Step two: after the waterproof mortar construction is dry, promptly perform asphalt mastic caulking, before caulking, clean the joint, first embed the joint with hemp, then repeatedly scrape and coat on both sides of the joint groove, then embed the asphalt mastic in the joint twice, so that it is firmly bonded with the wall joint, press tightly, prevent the asphalt mastic from leaving gaps or wrapping air in the joint, and lay in an arc shape with a thickness of three centimeters;
[0016] Step three: after the asphalt mastic is cooled and the dust is cleaned, the self-adhesive waterproof roll is laid on the treated base surface, the release film is torn off, the self-adhesive waterproof roll is firmly adhered to the asphalt mastic base surface and is compacted, the end lap and the joint are carefully checked, the self-adhesive waterproof roll is laid to the five centimeters of the return edge of the upper opening of the deformation joint body, the rubber waterstop is installed, the width is consistent with the width of the self-adhesive waterproof roll, and the rubber waterstop is laid to the five centimeters of the return edge of the upper opening of the deformation joint body;
[0017] Step four: two bases and a panel are installed, the rubber waterstop is compacted through the two bases, the two bases are slid along the lower side of the panel by adjusting the assembly, the distance between the two bases is controlled to be consistent with the width of the inside of the deformation joint body according to the actual construction site requirements, and the two ends of the panel are installed between the concrete bottom plate and the expansion bolts;
[0018] Step five: artificial glue filling is performed at the joint of the panel and one end of the two moving plates by using elastic silicone structural glue, a cover plate is finally laid on the inside of the panel to block the five-angle handle part, and fluorocarbon paint with the same color is brushed on the surface to achieve a good landscape effect.
[0019] The present application provides a super large swimming pool deformation joint construction structure and a construction method thereof, which has the following improvements and advantages compared with the prior art.
[0020] 1、The present application is provided with an adjusting assembly, which can adaptively adjust the distance between the two bases during the construction of the deformation joint body, so that the distance between the two bases is consistent with the width between different deformation joint bodies, thereby improving the applicability.
[0021] 2、The self-adhesive waterproof roll and the rubber waterstop are designed in a U shape and filled with elastic silicone structural glue, which has a certain stretching space, ensures the waterproof effect when the deformation joint body deforms, effectively avoids the phenomenon of water leakage inside the deformation joint body, and can stretch with the waterproof assembly when cracks and other problems occur due to temperature and other factors, effectively avoiding the problems of mosaic arching and cracking, and ensuring the flatness and aesthetics of the surface of the swimming pool.
[0022] 3、The asphalt mastic, waterproof mortar and foam board cooperate to ensure the waterproof quality of the deformation joint, meet the relevant quality standards and specification requirements, and strictly implement environmental protection measures during the construction process, such as timely cleaning of construction waste, control of material waste, prevention of air pollution, etc., classify and properly handle the waste, reduce the pollution to the environment, meet the concept and requirements of green construction, and realize the coordinated development of engineering construction and environmental protection. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and all other drawings obtained by those skilled in the art without creative labor based on these drawings also belong to the protection scope of the present application.
[0024] Figure 1 It is a schematic diagram of the overall front view and partial cross-sectional structure in the present application.
[0025] Figure 2 It is a schematic diagram of the overall front view and partial cross-sectional structure in the present application. Figure 1 It is a schematic diagram of the enlarged structure at A in the present application.
[0026] Figure 3 It is a schematic diagram of the partial cross-sectional structure between one base and the moving plate in the present application.
[0027] Figure 4 It is a schematic diagram of the partial three-dimensional structure inside one fixed frame in the present application.
[0028] Reference signs:
[0029] 1, concrete bottom plate; 2, deformation joint main body; 3, self-adhesive waterproof roll material; 4, rubber waterstop; 5, base; 6, panel; 7, fixed block; 8, sliding rod; 9, screw rod; 10, driving cone wheel; 11, driven cone wheel; 12, mounting plate; 13, spring I; 14, moving plate; 15, fixed frame; 16, guide rod; 17, sliding groove; 18, sliding block; 19, spring II; 20, spring III; 21, waterproof mortar; 22, asphalt oil paste; 23, foam board; 24, elastic silicone structural adhesive; 25, expansion bolt; 26, five-angle handle. DETAILED DESCRIPTION
[0030] The present application will be described in detail below, and the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor also belong to the protection scope of the present application.
[0031] The present application provides a super-large swimming pool deformation joint construction structure and a construction method thereof by improvement. The technical solutions of the present application are as follows:
[0032] Embodiment I:
[0033] As Figures 1 to 4As shown, the embodiment of the present application provides a super large swimming pool deformation joint construction structure, which comprises a concrete bottom plate 1, a deformation joint body 2 is arranged on the inner side of the concrete bottom plate 1, a self-adhesive waterproof coiled material 3 is arranged on the inner side of the deformation joint body 2 at the upper end position, a rubber waterstop 4 is arranged on the upper side of the self-adhesive waterproof coiled material 3, two bases 5 are symmetrically arranged on the upper end of the deformation joint body 2, and a panel 6 is arranged on the upper side of the two bases 5, further comprising an adjusting assembly and an expansion assembly, the adjusting assembly is arranged between the two bases 5, and the expansion assembly is arranged on the inner side of the two bases 5; the adjusting assembly comprises a fixed block 7 fixed to the lower side of the panel 6, two slide rods 8 fixed to one end of the two bases 5, the two slide rods 8 are respectively connected to the inner side of the fixed block 7 through sliding, a screw rod 9 is rotatably connected to the inner side upper end of the fixed block 7 through screwing, the lower end of the screw rod 9 is fixed with a driving cone pulley 10, one end of the two slide rods 8 is fixed with a driven cone pulley 11 abutting against the driving cone pulley 10, the outer side of the two slide rods 8 is fixed with a mounting plate 12, the outer side of the two slide rods 8 is sleeved with a spring I 13, one end of the two spring I 13 is fixed to the inner side of the fixed block 7, and the other end of the two spring I 13 is fixed to one side of the two mounting plates 12 respectively.
[0034] Further, the expansion assembly comprises two moving plates 14 slidingly arranged on the inner side of the two bases 5, one end of the two moving plates 14 is fixed to the self-adhesive waterproof coiled material 3 and the rubber waterstop 4 through screws respectively, one end of the two moving plates 14 is fixed with a plurality of spring III 20 at equal intervals, the other end of the plurality of spring III 20 is fixed to the inner wall of the two bases 5 respectively, the inner side of the two bases 5 is symmetrically fixed with two fixed frames 15, the inner side of the plurality of fixed frames 15 is fixed with a guide rod 16, the inner side of the plurality of fixed frames 15 is provided with a sliding groove 17, the inner side of the plurality of sliding grooves 17 is slidingly provided with a sliding block 18, the plurality of sliding blocks 18 is slidingly arranged on the outer side of the plurality of guide rods 16, the outer side of the plurality of guide rods 16 is sleeved with a spring II 19, one end of the plurality of spring II 19 is fixed to one side of the plurality of sliding blocks 18, and the other end of the plurality of spring II 19 is fixed to the inner side of the plurality of fixed frames 15.
[0035] Further, the inner side of the deformation joint body 2 is provided with a foam plate 23 at the bottom end, and the inner side of the deformation joint body 2 is provided with waterproof mortar 21 at the position above the foam plate 23, and the inner side of the deformation joint body 2 is provided with asphalt oil paste 22 above the waterproof mortar 21, through the cooperation of the asphalt oil paste 22, the waterproof mortar 21 and the foam plate 23, the waterproof quality of the deformation joint body 2 is ensured, and the relevant quality standards and specification requirements are met.
[0036] Further, the inner side of the screw rod 9 and one end of the two moving plates 14 are filled with elastic silicone structural adhesive 24, the filled elastic silicone structural adhesive 24 has certain expansion performance, and the expansion feasibility of the expansion assembly is ensured.
[0037] Further, the two ends of the panel 6 are fixedly connected with the concrete bottom plate 1 through the expansion bolts 25.
[0038] Further, in order to facilitate the rotation of the screw rod 9 by the staff, the upper end of the screw rod 9 is fixedly connected with a five-angle handle 26.
[0039] Further, the two bases 5 and the panel 6 are made of aluminum alloy.
[0040] Further, the self-adhesive waterproof roll 3 and the rubber waterstop 4 are arranged in a U shape, and through the U-shaped design, the self-adhesive waterproof roll 3 and the rubber waterstop 4 have a certain stretching space.
[0041] Embodiment two:
[0042] The application further discloses a construction method of the super-large swimming pool deformation joint construction structure.
[0043] Step one: the deformation joint main body 2 is cleaned by hand, washed with water, ensured to be free of dust, provided with a clean working surface, and then the waterproof mortar 21 is used to plaster and layer by layer to form a bottom, and the concave arc surface shape is formed, and the thickness of the thinnest part in the middle is not less than three centimeters;
[0044] Step two: after the waterproof mortar 21 is constructed and dried, the asphalt oil paste 22 is filled in the joint in time, before the filling, the joint is cleaned, the hemp is embedded in the joint first, then the joint groove is repeatedly scraped and coated, and then the asphalt oil paste 22 is embedded in the joint twice, so that the asphalt oil paste 22 is firmly bonded with the joint wall, is pressed and compacted, air gaps or air are prevented from being left in the asphalt oil paste 22 and the joint wall, and the asphalt oil paste 22 is laid in an arc shape and has a thickness of three centimeters;
[0045] Step three: the self-adhesive waterproof roll 3 is laid and the rubber waterstop 4 is installed, after the asphalt oil paste 22 is constructed and cooled, dust is cleaned, the self-adhesive waterproof roll 3 is laid on the treated base surface, the isolation film is torn off, the self-adhesive waterproof roll 3 is firmly adhered to the base surface of the asphalt oil paste 22 and is compacted, the end lap and the joint are carefully checked, the self-adhesive waterproof roll 3 is laid to the upper edge of the deformation joint main body 2 and has a return edge of five centimeters, the rubber waterstop 4 is installed and has a width same as that of the self-adhesive waterproof roll 3 and is laid to the upper edge of the deformation joint main body 2 and has a return edge of five centimeters;
[0046] Step four: the two bases 5 and the panel 6 are installed, the rubber waterstop 4 is compacted through the two bases 5, the two bases 5 are slid along the lower side of the panel 6 through the operation of the adjusting assembly, the distance between the two bases 5 is controlled to be consistent with the width of the deformation joint main body 2 according to the actual construction site requirement, and then the two ends of the panel 6 are installed between the concrete bottom plate 1 through the expansion bolts 25.
[0047] Step five: artificial glue filling at the joint of panel 6 and two moving plates 14 one end with elastic silicone structural glue 24, finally laying cover plate on the inside of panel 6 for blocking part of five-angle handle 26, and brushing fluorocarbon paint with consistent color on the surface to achieve good landscape effect.
[0048] Specific implementation steps: according to the construction steps, foam board 23, waterproof mortar 21, asphalt oil paste 22 and foam board 23 are arranged in sequence, the distance between two bases 5 is adjusted by operating adjusting assembly, five-angle handle 26 is correspondingly sleeved and connected with tool such as five-angle wrench, five-angle handle 26 is rotated to drive screw rod 9 to rotate synchronously, screw rod 9 rotates to drive driving cone pulley 10 at the lower end to rotate and move through thread engagement along the inside of panel 6 and fixed block 7, and then two driven cone pulleys 11 are pushed, two driven cone pulleys 11 are respectively moved outward through the design of bevel fitting, and then two sliding rods 8 are relatively moved along the inside of fixed block 7, at the same time, two springs I 13 sleeved on the outside of two sliding rods 8 are extruded, the elastic potential energy of two springs I 13 is utilized to ensure subsequent reset, finally, two sliding rods 8 relatively moving drives two bases 5 to relatively move, to ensure that the distance between different deformation joint bodies 2 meets the requirements, through the setting of telescopic assembly, after the construction is completed, the width between two bases 5 and panel 6 can be automatically telescoped, to avoid the expansion joint place of glazed ceramic mosaic being extruded or cracked due to temperature influence, self-adhesive waterproof coiled material 3 and rubber waterstop 4 are set in U shape, which has certain stretching space, to ensure the waterproof quality of deformation joint body 2, the lower side of both ends of panel 6 is closely fitted with the upper side of concrete bottom plate 1, to further ensure the waterproof effect, the filled elastic silicone structural glue 24 has certain telescopic performance, to ensure the telescopic feasibility of telescopic assembly.
[0049] The above specification makes the skilled person in the art able to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Accordingly, the present application is not to be limited to the embodiments shown herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1. A super-large swimming pool deformation joint construction structure, comprising a concrete base plate (1), a deformation joint body (2) provided on the inner side of the concrete base plate (1), a self-adhesive waterproofing membrane (3) provided on the inner side of the deformation joint body (2) at the upper end thereof, a rubber waterstop (4) provided on the upper side of the self-adhesive waterproofing membrane (3), two bases (5) symmetrically provided on the upper end of the deformation joint body (2), and panels (6) provided on the upper sides of the two bases (5), characterized in that: Also includes: An adjustment component, the adjustment component being arranged between two bases (5); A telescopic assembly, the telescopic assembly being arranged inside the two bases (5); The adjustment assembly includes a fixed block (7) fixed to the lower side of the panel (6), two slide bars (8) fixed to one end of the two bases (5), the two slide bars (8) are respectively slidably connected to the inner side of the fixed block (7), the upper end of the inner side of the fixed block (7) is connected to a screw rod (9) by a threaded rotation, the lower end of the screw rod (9) is fixed to an active bevel wheel (10), one end of each of the two slide bars (8) is fixed to a driven bevel wheel (11) abutting against the active bevel wheel (10), and the outer sides of the two slide bars (8) are fixed with a mounting plate (12), the outer sides of the two slide bars (8) are respectively sleeved with a spring (13), one end of each of the two springs (13) is fixed to the inner side of the fixed block (7), and the other ends of the two springs (13) are respectively fixed to one side of the two mounting plates (12); The telescopic assembly comprises two movable plates (14) slidably arranged on the inner sides of the two bases (5), one end of the two movable plates (14) is fixed to the self-adhesive waterproof membrane (3) and the rubber water stop (4) by screws, and a plurality of springs (20) are fixed at equal intervals on one end of the two movable plates (14), the other ends of the plurality of springs (20) are fixed to the inner walls of the two bases (5), and two fixed frames (15) are symmetrically fixed on the inner sides of the two bases (5). The plurality of fixed frames (15) are fixed to the inner sides of the two bases (5). ) are fixed with a guide rod (16) on the inner side, and a plurality of fixed frames (15) are provided with a slide groove (17) on the inner side, and a plurality of sliders (18) are provided on the inner side of the plurality of slide grooves (17), and the plurality of sliders (18) slide on the outer side of the plurality of guide rods (16) respectively, and a spring 2 (19) is sleeved on the outer side of the plurality of guide rods (16), and one end of the plurality of spring 2 (19) is fixed to one side of the plurality of sliders (18) respectively, and the other end of the plurality of spring 2 (19) is fixed to the inner side of the plurality of fixed frames (15) respectively.
2. The super-large swimming pool expansion joint construction structure according to claim 1, characterized in that: A foam plate (23) is provided on the inner side of the deformation joint body (2) at the bottom end, and waterproof mortar (21) is poured on the inner side of the deformation joint body (2) at a position above the foam plate (23), and asphalt paste (22) is provided on the inner side of the deformation joint body (2) at the upper side of the waterproof mortar (21).
3. The super-large swimming pool expansion joint construction structure according to claim 1, characterized in that: The inner side of the screw (9) and one end of the two movable plates (14) are filled with elastic silicone structural adhesive (24).
4. The deformation joint construction structure of a super-large swimming pool according to claim 1 is characterized by: Both ends of the panel (6) are fixedly connected to the concrete base plate (1) via expansion bolts (25).
5. The deformation joint construction structure of a super-large swimming pool according to claim 1 is characterized by: A five-pointed handle (26) is fixed to the upper end of the screw (9).
6. The deformation joint construction structure of a super-large swimming pool according to claim 1 is characterized by: The two bases (5) and the panel (6) are both made of aluminum alloy.
7. The super-large swimming pool expansion joint construction structure according to claim 1, characterized in that: The self-adhesive waterproof roll (3) and the rubber waterstop (4) are both arranged in a U-shape.
8. The construction method of a super-large swimming pool expansion joint construction structure according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Manually clean the main body of the expansion joint (2), wash it with water to ensure that there is no dust, provide a clean working surface, use waterproof mortar (21) to plaster the base layer, and repair it into a concave arc shape, with the thinnest thickness in the middle not less than three centimeters; Step 2: After the waterproof mortar (21) is completed and dried, the asphalt paste (22) is promptly filled into the seam. Before filling the seam, the seam should be cleaned. First, use hemp rope to embed the seam, then scrape and apply it repeatedly on both sides of the seam groove. Then fill the seam with asphalt paste (22) twice to make it firmly bonded to the wall seam. Press it tightly to prevent the asphalt paste (22) from leaving gaps or entrapping air between the seam wall and the seam wall. Lay it in an arc shape with a thickness of three centimeters. Step 3: Lay the self-adhesive waterproofing membrane (3) and install the rubber water stop (4). After the asphalt grease (22) is finished and cooled, clean the dust. Spread the self-adhesive waterproofing membrane (3) on the treated base surface, tear off the isolation film, adhere the self-adhesive waterproofing membrane (3) firmly to the asphalt grease (22) base surface and compact it. Carefully check the end overlap and joints. Lay the self-adhesive waterproofing membrane (3) to 5 cm from the upper edge of the deformation joint body (2). Install the rubber water stop (4), the width of which is the same as that of the self-adhesive waterproofing membrane (3), and lay it to 5 cm from the upper edge of the deformation joint body (2); Step 4: Install the two bases (5) and the panel (6), compact the rubber water stop (4) through the two bases (5), and operate the adjustment component to make the two bases (5) slide along the lower side of the panel (6), and then control the spacing between the two bases (5) to match the width inside the deformation joint body (2) according to the actual construction site requirements, and then install the two ends of the panel (6) between the concrete base plate (1) through the expansion bolts (25); Step 5: Use elastic silicone structural adhesive (24) to manually seal the joints between the panel (6) and one end of the two movable plates (14). Finally, lay a cover plate on the inside of the panel (6) to block the five-pointed handle (26) part, and paint the surface with fluorocarbon paint of the same color to achieve a good landscape effect.
Citation Information
Patent Citations
Anti-seismic indoor ground expansion joint structure
CN211850072U
Waterproof structure of underground engineering cast-in-place concrete structure deformation joint
CN215926080U