Corridor deformation joint flat joint structure

Abstract

The utility model provides a kind of corridor deformation joint flat joint structure, including concrete roof, the deformation joint is opened in the concrete roof, the concrete roof is equipped with pad height layer in the top of the two sides of deformation joint, first waterproofing membrane is laid across the joint in the deformation joint, the first waterproofing membrane is inverted omega type, waterproof additional layer is laid on the pad height layer of two sides, the both ends of the first waterproofing membrane respectively cover the pad height layer and waterproof additional layer of corresponding side, water-collecting plate is set up on the first waterproofing membrane in deformation joint, second waterproofing membrane is laid in large area on the concrete roof, waterproof layer is laid on the second waterproofing membrane, antiskid floor tile is laid on the waterproof layer, load-bearing metal cover plate is set up in deformation joint at antiskid floor tile.This structure improves the waterproof reliability and structural adaptability of deformation joint flat joint part, reduces maintenance frequency, prolongs the service life of building.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a flat joint structure for expansion joints in connecting corridors. Background Technology

[0002] The core requirement for the expansion joint butt joint structure of connecting corridors is to accommodate the relative displacement of the building structure under temperature changes, settlement, or seismic forces, while ensuring the waterproof sealing and structural stability of the butt joint. Among existing technologies, the most widely used is the metal cover plate butt joint structure.

[0003] Its working principle is as follows: metal frames are fixed on the structural plates on both sides of the expansion joint of the corridor, and a sliding groove is set on the inner side of the frame. A metal cover plate is covered on the top of the expansion joint. One side of the cover plate is fixed to the frame on one side by bolts, and the other side is embedded in the sliding groove of the frame on the other side to form a sliding connection. This allows the cover plate to slide through the sliding groove to keep the surface flat when the two sides of the structure have horizontal and vertical relative displacement. A sealing strip is filled between the frame and the cover plate to achieve waterproof sealing.

[0004] However, the existing technology has obvious shortcomings: First, there is the problem of sliding jamming. Dust and debris can easily accumulate in the groove, causing the cover plate to slide obstructed. When the structure is displaced, it will warp or cause stress concentration on the frame, which will lead to structural damage. Second, there is the risk of waterproof failure. The sealing strip is prone to aging due to long-term environmental factors, and the sliding friction between the cover plate and the groove will accelerate the wear of the sealing strip. Rainwater can easily seep into the deformation joint, causing internal steel corrosion. Third, the maintenance cost is high. It is necessary to clean the debris in the groove regularly, replace the aging sealing strip and damaged connecting parts. The maintenance operation is frequent and the cost is high. Utility Model Content

[0005] To address the aforementioned issues, this utility model provides a flat-joint structure for expansion joints in connecting corridors. This structure improves the waterproof reliability and structural adaptability of the flat-joint portion of the expansion joint, reduces maintenance frequency, and extends the building's service life.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: A connecting corridor expansion joint flat joint structure includes a concrete roof with an expansion joint. A raised platform is provided on both sides of the expansion joint. A first waterproof membrane, shaped like an inverted Ω, is laid across the expansion joint. Additional waterproof layers are laid on the raised platforms on both sides. The two ends of the first waterproof membrane respectively cover the corresponding raised platforms and additional waterproof layers. A water collection board is erected on the expansion joint above the first waterproof membrane. A second waterproof membrane is laid over a large area on the concrete roof. A waterproof layer is laid on the second waterproof membrane. Anti-slip floor tiles are laid on the waterproof layer. A load-bearing metal cover plate is erected at the expansion joint where the anti-slip floor tiles are located.

[0007] Preferably, the ends of the water collection plate, the ends of the first waterproof membrane, and the additional waterproof layer are fixed by a sealing and fixing assembly.

[0008] Preferably, the sealing and fixing assembly includes a sealing pressure plate and a first locking bolt. The sealing pressure plate is pressed onto the end of the water collection plate, and the first locking bolt is evenly distributed on the sealing pressure plate, passing through the water collection plate, the first waterproof membrane and the waterproof additional layer in sequence and being fixed on the pad layer, so that the water collection plate, the first waterproof membrane and the waterproof additional layer are tightly attached.

[0009] Preferably, the waterproof layer is a concrete waterproof protective layer, which covers the sealing and fixing components.

[0010] Preferably, the overlap between the second waterproof membrane and the first waterproof membrane is bonded with sealant, and both the second and first waterproof membranes are made of highly elastic and plastic waterproof membranes.

[0011] Preferably, the mounting components at both ends of the load-bearing metal cover plate are fixedly installed on the floor tiles. The mounting components include pads that press down on both ends of the load-bearing metal cover plate, and multiple second locking bolts are evenly distributed on the pads.

[0012] Preferably, a pair of drainage grooves are provided on the water collection plate along its length, and a drain outlet is provided at the end of the drainage groove.

[0013] Preferably, a fire-resistant strip is installed below the expansion joint on the first waterproof membrane, and a bottom metal cover plate is installed below the expansion joint.

[0014] The beneficial effects of this utility model are as follows: 1. A multi-layer waterproof membrane, combined with sealant and concrete protective layer, forms an integral, airtight, flexible waterproof system. The inverted Ω-shaped first waterproof membrane has reserved deformation space, which can maintain no leakage under 50mm tension, 50mm compression and 20mm shear displacement, solving the problem of aging and failure of traditional structural sealant strips.

[0015] 2. It does not rely on a sliding structure with grooves. The flexible deformation of the waterproof membrane adapts to the building displacement, avoiding sliding jamming and structural stress concentration caused by the accumulation of debris, and reducing the risk of structural damage.

[0016] 3. The high-elasticity waterproof membrane has excellent aging resistance. After heat aging (70℃×168h), the tensile strength retention rate is ≥80% and the elongation at break retention rate is ≥70%. Combined with mechanical fixing and sealing design, it reduces the need for regular cleaning and component replacement, and significantly reduces maintenance frequency and cost.

[0017] 4. It integrates multiple functions such as waterproofing, drainage, fireproofing, and anti-slip. The load-bearing metal cover plate ensures the flatness and safety of the walking surface, and the drainage design of the water collection plate further enhances the durability of the waterproofing system. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the overall structure of an embodiment of the present utility model; Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the diagram; Figure 3 This is a schematic diagram of the water collection plate in an embodiment of the present invention.

[0019] In the diagram: 1 Concrete roof, 2 Second waterproof membrane, 3 Waterproof layer, 4 Anti-slip floor tiles, 5 First waterproof membrane, 6 Bottom metal cover plate, 7 Fire barrier strip, 8 Drainage board, 9 Load-bearing metal cover plate, 10 Additional waterproof layer, 11 Expansion joint, 12 Supplies, 13 Sealing and fixing components, 14 Drainage channel, 15 Installation components. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Reference Figure 1-3 A connecting corridor expansion joint flat joint structure includes a concrete roof 1, an expansion joint 11 is provided on the concrete roof 1, and a pad layer 12 is provided on the top of both sides of the expansion joint 11. A first waterproof membrane 5 is laid across the expansion joint 11. The first waterproof membrane 5 is in the shape of an inverted Ω and has a reserved redundant length, which can flexibly adapt to the bidirectional displacement of the expansion joint in the tensile, compressive and shear directions, and avoid the membrane from tearing or peeling due to structural deformation.

[0023] Waterproof supplementary layers 10 are laid on the two side padding layers 12. The two ends of the first waterproof membrane 5 are respectively covered by the corresponding side padding layers 12 and waterproof supplementary layers 10. The expansion joint 11 is located on the first waterproof membrane 5 and a water collection board 8 is laid on it. A pair of drainage channels 14 are opened on the water collection board 8 along its length. The ends of the drainage channels 14 are provided with drain outlets. The drainage channels 14 on the water collection board 8 can collect a small amount of infiltrated rainwater and guide it into the external drainage system through the end drain outlets to avoid water accumulation in the expansion joint and reduce waterproofing pressure. Furthermore, the ends of the water collection plate 8, the ends of the first waterproof membrane 5, and the additional waterproof layer 10 are fixed together by a sealing and fixing assembly 13. The sealing and fixing assembly 13 includes a sealing pressure plate and a first locking bolt. The sealing pressure plate is pressed onto the ends of the water collection plate 8, and the first locking bolt is evenly distributed on the sealing pressure plate. The bolts pass through the water collection plate 8, the first waterproof membrane 5, and the additional waterproof layer 10 in sequence and are fixed on the padding layer 12, so that the water collection plate 8, the first waterproof membrane 5, and the additional waterproof layer 10 are tightly attached. Through mechanical pressing, the water collection plate, the waterproof membrane, and the additional waterproof layer are ensured to be tightly attached to each other, preventing gaps from forming during displacement.

[0024] A second waterproof membrane 2 is laid on a large area of ​​the concrete roof 1. A waterproof layer 3 is laid on the second waterproof membrane 2. Anti-slip floor tiles 4 are laid on the waterproof layer 3. The waterproof layer 3 is a concrete waterproof protective layer. The concrete waterproof protective layer covers the sealing and fixing components 13.

[0025] Furthermore, the overlap between the second waterproof membrane 2 and the first waterproof membrane 5 is bonded with sealant. The second waterproof membrane 2 and the first waterproof membrane 5 are made of high-elasticity plastic waterproof membrane. The high-elasticity plastic waterproof membrane has excellent aging resistance. After heat aging (70℃×168h), the tensile strength retention rate is ≥80% and the elongation at break retention rate is ≥70%. Combined with mechanical fixing and sealing design, the need for regular cleaning and component replacement is reduced, and the maintenance frequency and cost are significantly reduced.

[0026] The first waterproof membrane is laid across 5 seams to form the first waterproof barrier. The additional waterproof layer enhances the waterproof reliability of the upper part of the pad. The second waterproof membrane is laid over a large area to achieve overall waterproof coverage. The overlapping parts are sealed with sealant to ensure seamless connection. The concrete waterproof protective layer further enhances the waterproof effect and protects the sealing and fixing components from external damage.

[0027] A load-bearing metal cover plate 9 is installed at the expansion joint 11 of the anti-slip floor tile 4. The mounting components 15 at both ends of the load-bearing metal cover plate 9 are fixedly installed on the floor tile 4. The mounting components 15 include pads that press the load-bearing metal cover plate 9 at both ends. Multiple second locking bolts are evenly distributed on the pads. The load-bearing metal cover plate 9 protects the waterproof structure below and ensures that the walking surface is flat and anti-slip.

[0028] In addition, a fire-resistant strip 7 is installed below the first waterproof membrane 5 at the expansion joint 11, and a bottom metal cover plate 6 is installed below the expansion joint 11. The bottom fire-resistant strip achieves the function of fireproof isolation.

[0029] The following steps are used to complete the flat joint process of the expansion joint: 1. Construction preparation: Prepare materials that meet the performance requirements, including high elastic plastic first waterproof membrane (tensile strength ≥12MPa, elongation at break ≥500%), second waterproof membrane, sealant, water collection board, load-bearing metal cover plate, sealing pressure plate, locking bolts, fire-resistant tape, etc.

[0030] 2. Base treatment: Clean the concrete roof 1 to ensure that the surface is flat, dry and free of debris. Construct a raised floor 12 on the top of the concrete roof 1 on both sides of the expansion joint 11. The raised floor 12 is made of concrete with a strength grade of not less than C30, and the surface flatness error is controlled within 3mm / m.

[0031] 3. Bottom protection installation: Install the bottom metal cover plate 6 below the expansion joint 11, ensuring that the cover plate is firmly fixed. Then, install the fire-resistant strip 7 below the first waterproof membrane 5 inside the expansion joint 11. The fire-resistant strip 7 should match the width of the expansion joint 11 and ensure that there are no gaps after installation.

[0032] 4. Waterproof structure construction: Lay an additional waterproof layer 10 on the two side pads 12, with a width of not less than 500mm; lay the first waterproof membrane 5 across the joint in the expansion joint 11, in an inverted Ω shape to reserve deformation space, with its two ends covering the corresponding pads 12 and the additional waterproof layer 10, with a coverage width of not less than 300mm; use sealing and fixing components 13 to fix the ends of the water collection board 8, the ends of the first waterproof membrane 5, and the additional waterproof layer 10, and press them together with sealing pressure plates. The first locking bolts are evenly distributed with a spacing of not more than 300mm to ensure that each layer of structure is tightly attached.

[0033] 5. Overall Waterproofing and Protection Construction: Lay the second waterproof membrane 2 over a large area on the concrete roof 1. The overlap width between the second waterproof membrane 2 and the first waterproof membrane 5 shall not be less than 150mm, and the overlap area shall be fully bonded with sealant. Construct a waterproof layer 3 (concrete waterproof protective layer) on the second waterproof membrane 2. The protective layer thickness shall not be less than 40mm, and cover it with sealing and fixing components 13. Lay anti-slip floor tiles 4 on the waterproof layer 3. The floor tiles shall be laid flat, and the gaps shall be filled with waterproof sealant. Fix the load-bearing metal cover plate 9 on the anti-slip floor tiles 4 at the expansion joint 11 using the installation components 15. The pads shall press down on both ends of the load-bearing metal cover plate 9, and the second locking bolts shall be evenly distributed and fixed to ensure that the cover plate is flat, firm, and can accommodate slight structural displacement.

[0034] 6. Inspection and Acceptance: After construction is completed, a water tightness test is conducted. A water pressure of 0.3MPa is applied for 30 minutes. If there is no leakage in the membrane, sealant, overlap joints and mechanical fixing points and no drop in water level, it is considered qualified. Simulated deformation displacement test is conducted to verify the waterproof performance and structural stability under tensile, compressive and shear displacement.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connecting corridor expansion joint flat joint structure, comprising a concrete roof (1), wherein an expansion joint (11) is provided on the concrete roof (1), characterized in that, The concrete roof (1) is provided with a padding layer (12) on both sides of the expansion joint (11). A first waterproof membrane (5) is laid across the expansion joint (11). The first waterproof membrane (5) is in the shape of an inverted Ω. A waterproof additional layer (10) is laid on the padding layer (12) on both sides. The two ends of the first waterproof membrane (5) are respectively covered by the padding layer (12) and the waterproof additional layer (10) on the corresponding side. A water collection board (8) is laid on the first waterproof membrane (5) at the expansion joint (11). A second waterproof membrane (2) is laid on a large area of ​​the concrete roof (1). A waterproof layer (3) is laid on the second waterproof membrane (2). Anti-slip floor tiles (4) are laid on the waterproof layer (3). A load-bearing metal cover plate (9) is laid on the anti-slip floor tiles (4) at the expansion joint (11).

2. The flat joint structure of a connecting corridor according to claim 1, characterized in that, The ends of the water collection plate (8), the ends of the first waterproof membrane (5), and the waterproof additional layer (10) are fixed together by a sealing and fixing assembly (13).

3. The flat joint structure of a connecting corridor according to claim 2, characterized in that, The sealing and fixing assembly (13) includes a sealing pressure plate and a first locking bolt. The sealing pressure plate is pressed on the end of the water collection plate (8). The first locking bolt is evenly distributed on the sealing pressure plate, passes through the water collection plate (8), the first waterproof membrane (5) and the waterproof additional layer (10) in sequence, and is fixed on the pad height (12) so that the water collection plate (8), the first waterproof membrane (5) and the waterproof additional layer (10) are tightly attached.

4. The flat joint structure of a connecting corridor expansion joint according to claim 3, characterized in that, The waterproof layer (3) is a concrete waterproof protective layer, which covers the sealing and fixing component (13).

5. The flat joint structure of a connecting corridor expansion joint according to claim 1, characterized in that, The overlap between the second waterproof membrane (2) and the first waterproof membrane (5) is bonded with sealant. The second waterproof membrane (2) and the first waterproof membrane (5) are made of high elastic plastic waterproof membrane.

6. The flat joint structure of a connecting corridor expansion joint according to claim 1, characterized in that, The mounting components (15) at both ends of the load-bearing metal cover plate (9) are fixedly installed on the floor tile (4). The mounting components (15) include pads pressing on both ends of the load-bearing metal cover plate (9), and multiple second locking bolts are evenly distributed on the pads.

7. The flat joint structure of a connecting corridor according to claim 1, characterized in that, A pair of drainage grooves (14) are provided on the water collection plate (8) along its length direction, and the ends of the drainage grooves (14) are provided with drain outlets.

8. The flat joint structure of a connecting corridor according to claim 1, characterized in that, The expansion joint (11) is located below the first waterproof membrane (5) and is equipped with a fire-resistant strip (7). A bottom metal cover plate (6) is installed below the expansion joint (11).

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