A waterproof expansion joint structure for construction engineering

Abstract

The present invention provides a waterproof expansion joint structure for construction engineering, which belongs to the technical field of waterproof expansion joint structures; it includes two pressing plates and a water stop fixed between the pressing plates and the wall, the middle of the water stop is located at the expansion joint of the wall, and the two pressing plates are fixed at the top of the wall and located on both sides of the expansion joint of the wall. The present invention sets a U-shaped piece, a lower convex part, a middle plate, a recessed part and a support plate. When water seepage occurs, water infiltrating from the bottom of the rubber pad will be collected in the U-shaped piece to prevent the accumulated water from continuing to penetrate upward. If the accumulated water penetrates from the bottom of the water stop and located at the top of the middle plate, it will pass through the recessed part and drip downward along the two support plates under the action of gravity, and then flow into the U-shaped piece through the circular hole one to complete the collection. When the accumulated water penetrates from the bottom of the pressing plate and the top of the water stop, it can flow into the U-shaped piece from the circular hole two after passing through the recessed part, so that the accumulated water is collected, which greatly enhances the waterproof performance at the expansion joint.

Description

Technical Field

[0001] The invention relates to the technical field of expansion joint waterproof structures, and in particular to an expansion joint waterproof structure for construction engineering. Background Art

[0002] Building components are affected by a variety of environmental factors such as temperature and humidity, which can cause expansion and contraction deformation. In order to prevent such deformation from damaging the building structure, expansion joints need to be set up at appropriate locations along the construction joint direction of the building or structure. However, if the expansion joints are not handled properly, water leakage is very likely to occur, which in turn affects the normal use and structural safety of the building. Therefore, it is necessary to set up an effective waterproof structure at the expansion joint. A waterproof structure is required at the expansion joint. The waterproof structure is mainly composed of a pressure plate, a support frame, a cover plate and a water stop. The pressure plate is fixed to the expansion joint of the wall by screws, and the support frame is fixed to the top of the pressure plate. Slide rods, slide grooves and positioning grooves are provided on the support frame. The cover plate is made of a waterproof material. The waterproof material ... The plate is slidably connected in the positioning groove through the positioning block. When the cover plate is initially positioned, the center screw is passed through the cover plate and accurately screwed on the slide rod. The cover plate is firmly fixed to the support frame through the tightening force of the screw to complete the entire installation process. The waterstop is installed at the bottom of the pressure plate, and the waterstop is fixed by the pressure plate. The waterstop can effectively play a waterproof role and prevent moisture from penetrating from the expansion joint. Through such a waterproof structure composed of a pressure plate, a support frame, a cover plate and a waterstop, the expansion joint can be effectively waterproofed, the waterproof performance of the building can be guaranteed, and the service life of the building can be extended.

[0003] In the waterproof treatment of building expansion joints, the waterstop is fixed to the expansion joint of the wall by a pressure plate, and the pressure plate is fastened to the wall by screws. Since the screws are arranged at intervals, the pressure exerted downward by the pressure plate on the waterstop in the area between two adjacent screws is relatively small, resulting in a low sealing strength in this area. Once the roof drain outlet is blocked, causing water accumulation, and the water level overflows the pressure plate, the accumulated water can easily penetrate into the interior from the weak point where the waterstop is under less pressure, eventually causing the expansion joint to leak, seriously affecting the waterproof performance and structural safety of the building. The waterproofness of the expansion joint waterproof structure needs to be improved. Therefore, the present application provides an expansion joint waterproof structure for construction projects to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an expansion joint waterproof structure for construction engineering to solve the problem that the waterproof property of the expansion joint waterproof structure needs to be improved.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A waterproof expansion joint structure for construction engineering, comprising two pressing plates and a water stop fixed between the pressing plates and the wall, wherein the middle of the water stop is located at the expansion joint of the wall, the two pressing plates are fixed to the top of the wall and are located on both sides of the expansion joint of the wall, the tops of the two pressing plates are fixed with support frames, and the tops of the two support frames are jointly installed with a cover plate, and further comprising:

[0007] The waterproof mechanism is located between the pressure plate and the wall, and comprises a U-shaped member, a sealing assembly and a drainage assembly. The U-shaped member is pre-buried at the top of the wall, and the sealing assembly and the drainage assembly are arranged on opposite sides of the U-shaped member.

[0008] Preferably, a lower convex portion is provided at the bottom of the pressure plate and located at the U-shaped piece, a middle plate and a rubber pad are provided between the top of the wall and the waterstop, the rubber pad is located at the bottom of the middle plate, a recessed portion is provided near the middle of the middle plate, support plates are fixed on both sides of the inner wall of the recessed portion, the lower convex portion is located in the recessed portion, the waterstop passes through the lower convex portion and the recessed portion, a circular hole one is provided at the bottom of the recessed portion, a circular hole two is provided on the waterstop, and the circular hole two is located above the circular hole one.

[0009] Preferably, the sealing assembly includes several circular tubes fixed and passing through the side of the U-shaped part, the several circular tubes are pre-buried in the wall, the circumferential surfaces of the several circular tubes are provided with water inlet holes connected to the inner wall, the water inlet holes are located in the U-shaped part, the inner walls of the several circular tubes are slidably connected with water-absorbing and swelling rubber columns, a round rod is fixed at one end of the water-absorbing and swelling rubber columns away from the U-shaped part, a square shell is commonly fixed at the ends of the several circular tubes, the round rod movably passes through the circular tubes and the square shell, the inner wall of the square shell is slidably connected with a square plate, the round rod is fixed to the side of the square plate, a curved plate is fixed on the side of the square plate away from the round rod, and a water stop belt is attached to the surface of the curved plate.

[0010] Preferably, a rubber pad 2 is fixed to the side of the curved plate away from the square plate, the rubber pad 2 is attached to the surface of the waterstop, and the rubber pad 2 is used to increase the sealing between the curved plate and the waterstop.

[0011] Preferably, the sealing assembly further comprises a bending plate, the bending plate being composed of a horizontal portion and a vertical portion, and the vertical portion of the bending plate is attached to the surface of the waterstop.

[0012] Preferably, a rubber pad three is fixed to one side of the vertical portion of the bent plate close to the waterstop, the rubber pad three is attached to the surface of the waterstop, and the rubber pad three is used to increase the sealing between the rubber pad and the waterstop.

[0013] Preferably, the end of the circular tube is provided with an inclined surface, and the recessed portion of the middle plate is fitted on the surface of the inclined surface.

[0014] Preferably, a strip groove is provided on the inner wall of the circular tube, and the strip groove is connected to the water inlet hole.

[0015] Preferably, the drainage assembly includes a drainage pipe, a drainage outlet is opened on the side of the U-shaped piece, the drainage pipe is connected to the drainage outlet, the drainage pipe is pre-buried inside the wall, an inner pipe is slidably connected inside the drainage pipe, a connecting piece is movably penetrated through the end of the circular pipe, the end of the connecting piece is fixed to the end of a water-swellable rubber column, the other end of the connecting piece is fixed to the inner wall of the inner pipe through a circular cylinder, a drainage end is provided at the end of the inner pipe, a cap is threadedly connected to the end of the drainage end, and the cap is located in the drainage pipe.

[0016] Preferably, the surface of the cap is provided with anti-slip stripes to increase the friction of the contact surface.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above scheme, by setting a U-shaped part, a lower convex part, a middle plate, a recessed part and a support plate, in the waterproof treatment of the expansion joint of the building, the middle plate is set between the waterstop and the wall, which can effectively improve the waterproof ability. When water seepage occurs, the water seeping in from the bottom of the rubber pad will be collected in the U-shaped part, preventing the accumulated water from continuing to penetrate upward. If the accumulated water penetrates from the bottom of the waterstop and the top of the middle plate, it will pass through the recessed part and drip downward along the two support plates under the action of gravity, and then flow into the U-shaped part through the circular hole one to complete the collection. When the accumulated water penetrates from the bottom of the pressure plate and the top of the waterstop, after passing through the recessed part, it can flow into the U-shaped part from the circular hole two to realize the collection of accumulated water, thereby greatly enhancing the waterproof performance of the expansion joint.

[0019] By setting up a sealing component, when a lot of water accumulates in the U-shaped part, the accumulated water will flow into the inside of the circular tube through the water inlet hole. At this time, once the water-absorbing and swelling rubber column comes into contact with water, it will expand rapidly. As the rubber column expands, it will push the square plate to move outward through the round rod. During the movement of the square plate, the curved plate and the rubber pad 2 will be driven to move synchronously in the direction of the waterstop. With the cooperation of the bent plate, a closed space is successfully constructed between the top of the square plate and the waterstop, which effectively prevents excessive water from flowing out of the expansion joint, further enhancing the waterproof performance.

[0020] By setting up the drainage components, the water-absorbing and expanding rubber column will not only push the square plate through the round rod to drive the curved plate and the rubber pad to move in the direction of the waterstop, thereby constructing a closed space to enhance waterproofing; it will also drive the connecting parts to move away from the waterstop, so that the originally hidden cap extends out of the drain pipe. The cap is in a striking red color. When the staff go to the roof to deal with the accumulated water, they can notice it at a glance and realize that there is water seepage at the waterstop and take timely countermeasures. In addition, the staff can open the cap to allow the accumulated water in the U-shaped part to be discharged smoothly, thereby reducing the pressure of the accumulated water and further ensuring the stable operation of the waterproofing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and enable those skilled in the relevant art to make and use the present disclosure.

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 It is a cross-sectional view of the water stop strip of the present invention;

[0024] Figure 3 It is a partial enlarged view of the waterproof mechanism of the present invention;

[0025] Figure 4 For the present invention Figure 3 A magnified view of the structure at center;

[0026] Figure 5 For the present invention Figure 3 A magnified view of the structure at B in the middle;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the U-shaped member of the present invention;

[0028] Figure 7 This is an enlarged view of the U-shaped member of the present invention;

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the cover plate of the present invention;

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the middle plate of the present invention.

[0031] In the figure: 1. wall; 2. pressure plate; 3. support frame; 4. cover plate; 5. water stop; 6. waterproof mechanism; 7. U-shaped part; 8. lower convex part; 9. middle plate; 10. recessed part; 11. round hole one; 12. support plate; 13. rubber pad one; 14. round hole two; 15. sealing assembly; 16. round tube; 17. water inlet hole; 18. strip groove; 19. water-swelling rubber column; 20. round rod; 21. square shell; 22. square plate; 23. curved plate; 24. rubber pad two; 25. bent plate; 26. rubber pad three; 27. drainage assembly; 28. drainage outlet; 29. ​​connector; 30. drainage pipe; 31. inner tube; 32. drainage end; 33. cap; 34. inclined surface.

[0032] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0033] The following is a detailed description of a waterproof expansion joint structure for construction engineering provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0034] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0035] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0036] like Figure 1-Figure 9 As shown, an embodiment of the present invention provides an expansion joint waterproof structure for construction engineering, including two pressing plates 2 and a water stop 5 fixed between the pressing plates 2 and the wall 1, the middle of the water stop 5 is located at the expansion joint of the wall 1, the two pressing plates 2 are fixed to the top of the wall 1 and are located on both sides of the expansion joint of the wall 1, the tops of the two pressing plates 2 are fixed with support frames 3, the tops of the two support frames 3 are jointly installed with a cover plate 4, a slide rod, a slide groove and a positioning groove are provided on the support frame 3, the cover plate 4 is slidably connected in the positioning groove through a positioning block, the center screw is passed through the cover plate 4 and screwed on the slide rod to realize the installation of the cover plate 4, and also includes:

[0037] The waterproof mechanism 6 is located between the pressure plate 2 and the wall 1. The waterproof mechanism 6 includes a U-shaped member 7, a sealing assembly 15 and a drainage assembly 27. The U-shaped member 7 is pre-buried in the top of the wall 1, and the sealing assembly 15 and the drainage assembly 27 are arranged on opposite sides of the U-shaped member 7.

[0038] like Figure 4As shown, in this embodiment, a lower protrusion 8 is provided at the bottom of the pressure plate 2 and located at the U-shaped piece 7, a middle plate 9 and a rubber pad 13 are provided between the top of the wall 1 and the waterstop 5, the rubber pad 13 is located at the bottom of the middle plate 9, a recess 10 is provided near the middle of the middle plate 9, support plates 12 are fixed on both sides of the inner wall of the recess 10, the lower protrusion 8 is located in the recess 10, the waterstop 5 passes through between the lower protrusion 8 and the recess 10, a circular hole 11 is provided at the bottom of the recess 10, a circular hole 2 14 is provided on the waterstop 5, and the circular hole 2 14 is located above the circular hole 11, the support plate 12 is used to support the waterstop 5 to provide space for the flow of accumulated water, and the support plate 12 has a certain elasticity, and the cooperation between the support plate 12 and the lower protrusion 8 can improve the sealing ability of the waterstop 5, and further prevent the accumulated water from penetrating in the direction of the expansion joint.

[0039] like Figure 4 As shown, in this embodiment, the sealing assembly 15 includes a plurality of circular tubes 16 fixedly passed through the side of the U-shaped member 7, the plurality of circular tubes 16 are pre-buried in the wall 1, the circumferential surfaces of the plurality of circular tubes 16 are provided with water inlet holes 17 connected to the inner wall, the water inlet holes 17 are located in the U-shaped member 7, the inner walls of the plurality of circular tubes 16 are slidably connected with water-absorbing and swelling rubber columns 19, the end of the water-absorbing and swelling rubber columns 19 away from the U-shaped member 7 is fixed with a round rod 20, the ends of the plurality of circular tubes 16 are commonly fixed with a square shell 21, the round rod 20 movably passes through the circular tube 16 and the square shell 21, the inner wall of the square shell 21 is slidably connected with a square plate 22, and the round rod 20 is fixed on the side of the square plate 22, and a curved panel 23 is fixed on the side of the square plate 22 away from the round rod 20. The water stop strip 5 is attached to the surface of the curved panel 23. The water-swelling rubber column 19 is a material that combines the high elasticity and flexibility of rubber with the strong water absorption of water-absorbent resin. It can absorb water several times or even dozens of times its own weight. After absorbing water, the volume expands rapidly. A sealing ring is provided inside the square shell 21 to improve the sealing between the square shell 21 and the square plate 22. The square shell 21 is connected to several round tubes 16, which can make the concrete contact between the two more sufficient, making the embedded parts more stable in the concrete.

[0040] like Figure 4 As shown, in this embodiment, a rubber pad 24 is fixed to the side of the curved panel 23 away from the square plate 22. The rubber pad 24 is attached to the surface of the waterstop 5. The rubber pad 24 is used to increase the sealing between the waterstop 5 and the waterstop 5, thereby increasing the contact area and friction between the two, further improving the sealing effect, and effectively preventing accumulated water from leaking from the gap between the square plate 22 and the waterstop 5.

[0041] like Figure 4As shown, in this embodiment, the sealing assembly 15 also includes a bending plate 25, which is composed of a horizontal portion and a vertical portion. The vertical portion of the bending plate 25 is attached to the surface of the waterstop strip 5. When the curved panel 23 moves toward the direction of the waterstop strip 5, the curved panel 23 will drive the waterstop strip 5 to fit the vertical portion of the bending plate 25. Through the reaction force of the vertical portion, the waterstop strip 5 is clamped between the curved panel 23 and the bent plate 25, making it more sealed, further preventing accumulated water from flowing down from the expansion joint.

[0042] like Figure 4 As shown, in the present embodiment, a rubber pad 3 26 is fixed to one side of the vertical portion of the bending plate 25 close to the waterstop 5. The rubber pad 3 26 is attached to the surface of the waterstop 5. The rubber pad 3 26 is used to increase the sealing performance with the waterstop 5, thereby further increasing the sealing performance of the waterstop 5 itself, reducing the possibility of accumulated water penetrating from the gaps in the waterstop 5 itself, and ensuring the waterproof effect in all directions.

[0043] like Figure 7 As shown, in this embodiment, a slope 34 is provided at the end of the circular tube 16, and the recessed portion 10 of the middle plate 9 fits on the surface of the slope 34. On the one hand, it can assist in positioning the middle plate 9, ensure the accuracy of its installation position, and improve the efficiency of installation; on the other hand, when the accumulated water flows, the slope 34 helps to guide the accumulated water into the water inlet hole 17 of the circular tube 16, so that the accumulated water collection and subsequent sealing and strengthening processes are smoother.

[0044] like Figure 4 As shown, in the present embodiment, a strip groove 18 is provided on the inner wall of the circular tube 16, and the strip groove 18 is connected with the water inlet hole 17. By providing the strip groove 18, after the accumulated water enters the circular tube 16, the accumulated water can quickly contact with the water-absorbing and swelling rubber column 19 through the strip groove 18, so that the water-absorbing and swelling rubber column 19 can expand more evenly, and the circular tube 16 can be prevented from being blocked by the water-absorbing and swelling rubber column 19 after expansion, so that the accumulated water cannot fully contact with the water-absorbing and swelling rubber column 19, thereby ensuring stability during operation.

[0045] like Figure 4 and Figure 5As shown, in this embodiment, the drainage assembly 27 includes a drainage pipe 30, a drainage port 28 is opened on the side of the U-shaped member 7, the drainage pipe 30 is connected to the drainage port 28, the drainage pipe 30 is pre-buried inside the wall 1, an inner pipe 31 is slidably connected inside the drainage pipe 30, a connecting piece 29 is movably penetrated at the end of the circular tube 16, the end of the connecting piece 29 is fixed to the end of the water-swelling rubber column 19, the other end of the connecting piece 29 is fixed to the inner wall of the inner pipe 31 through the cylinder, and the end of the inner pipe 31 is provided with a drainage End 32, the end of the drainage end 32 is threadedly connected with a cap 33, the cap 33 is located in the drainage pipe 30, and is connected to the water-absorbing and swelling rubber column 19 through a connecting piece 29. When the water-absorbing and swelling rubber column 19 expands, it drives the connecting piece 29 to move, and then the inner tube 31 moves, so that the cap 33 originally hidden in the drainage pipe 30 is extended. After the cap 33 is extended, it can remind the staff that there is water seepage at the waterstop 5; opening the cap 33 can discharge the water accumulated in the U-shaped piece 7, effectively reducing the pressure of the accumulated water.

[0046] like Figure 5 As shown, in this embodiment, the surface of the cap 33 is provided with anti-slip stripes for increasing the friction of the contact surface. The overall color of the cap 33 is red, which is more conspicuous during use and convenient for reminding the staff. The anti-slip stripes facilitate the staff to open and close the cap 33, making the drainage operation more convenient, ensuring the smooth realization of the function of the drainage component 27, and further ensuring the stable operation of the waterproof system.

[0047] Working principle:

[0048] When the wall 1 is being poured, the U-shaped piece 7, the round tube 16 and the drain pipe 30 are pre-buried inside the wall 1. After the wall 1 is formed, the water stop 5 can be installed. When the water stop 5 is being installed, the middle plate 9 is installed on the top of the water stop 5 after the round hole 14 is aligned with the round hole 11, and then the pressing plate 2 is fixed on the top. After installation, the cover plate 4 can be installed;

[0049] At the expansion joint, a middle plate 9 and a rubber pad 13 are provided between the water stop 5 and the wall 1. When water seepage occurs, based on gravity and structural design, water seeping from the bottom of the rubber pad 13 will naturally flow into it due to the position layout of the U-shaped member 7, preventing the accumulated water from seeping upward. If the accumulated water seeps from the bottom of the water stop 5 (the top of the middle plate 9), it will first enter the recessed portion 10, and under the action of gravity, it will drip downward along the support plate 12, and then flow into the U-shaped member 7 through the circular hole 11. The accumulated water that seeps from the bottom of the pressure plate 2 and the top of the water stop 5 will flow into the U-shaped member 7 with the help of the circular hole 2 14 after passing through the recessed portion 10, thereby realizing effective collection of the accumulated water.

[0050] When the water in the U-shaped member 7 increases, the water flows into the circular tube 16 through the water inlet hole 17. The water-absorbing and swelling rubber column 19 in the circular tube 16 swells when it encounters water, and its swelling force is transmitted to the square plate 22 through the round rod 20, pushing the square plate 22 to move outward. The square plate 22 drives the curved plate 23 and the rubber pad 24 to move toward the water stop 5, and cooperates with the bent plate 25 to form a closed space between the square plate 22 and the water stop 5, preventing the accumulated water from flowing out of the expansion joint, thereby enhancing the waterproof performance.

[0051] When the water-swellable rubber column 19 expands, it will also drive the connecting piece 29 to move away from the waterstop 5, so that the red cap 33 originally hidden in the drain pipe 30 will extend. The eye-catching red cap 33 can remind the staff that there is water seepage at the waterstop 5. After the staff finds it, they can open the cap 33 to allow the accumulated water in the U-shaped piece 7 to be discharged through the drain port 28, the drain pipe 30, and the drainage end 32 of the inner tube 31, thereby reducing the pressure of the accumulated water and ensuring the stable operation of the waterproof system.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A waterproof expansion joint structure for construction engineering, comprising two pressing plates (2) and a water stop strip (5) fixed between the pressing plates (2) and a wall (1), wherein the middle of the water stop strip (5) is located at the expansion joint of the wall (1), the two pressing plates (2) are fixed to the top of the wall (1) and are located on both sides of the expansion joint of the wall (1), the tops of the two pressing plates (2) are fixed with support frames (3), and the tops of the two support frames (3) are jointly installed with a cover plate (4), characterized in that: Also includes: A waterproof mechanism (6), wherein the waterproof mechanism (6) is located between the pressure plate (2) and the wall (1), a lower convex portion (8) is provided at the bottom of the pressure plate (2) and at the U-shaped member (7), a middle plate (9) and a rubber pad (13) are provided between the top of the wall (1) and the water stop strip (5), the rubber pad (13) is located at the bottom of the middle plate (9), a recessed portion (10) is provided near the middle of the middle plate (9), support plates (12) are fixed on both sides of the inner wall of the recessed portion (10), and a lower convex portion (8) is provided at the bottom of the middle plate (9). The convex portion (8) is located in the concave portion (10), the water stop strip (5) passes between the lower convex portion (8) and the concave portion (10), a circular hole (11) is opened at the bottom of the concave portion (10), a circular hole (14) is opened on the water stop strip (5), and the circular hole (14) is located above the circular hole (11), and the waterproof mechanism (6) includes a U-shaped member (7), a sealing component (15) and a drainage component (27), the U-shaped member (7) is pre-buried in the top of the wall (1), and the sealing component (15) and The drainage assembly (27) is arranged on opposite sides of the U-shaped member (7). The sealing assembly (15) comprises a plurality of circular tubes (16) fixedly penetrating the side of the U-shaped member (7). The plurality of circular tubes (16) are pre-buried in the wall (1). The circumferential surfaces of the plurality of circular tubes (16) are provided with water inlet holes (17) connected to the inner wall. The water inlet holes (17) are located in the U-shaped member (7). The inner walls of the plurality of circular tubes (16) are slidably connected with water-absorbing and swelling rubber columns (19). The water-absorbing and swelling rubber columns (19) are provided with water-absorbing and swelling rubber columns (19). A round rod (20) is fixed to one end of the column (19) away from the U-shaped member (7); a square shell (21) is fixed to the ends of a plurality of round tubes (16); the round rod (20) movably penetrates the round tube (16) and the square shell (21); a square plate (22) is slidably connected to the inner wall of the square shell (21); the round rod (20) is fixed to the side of the square plate (22); a curved plate (23) is fixed to the side of the square plate (22) away from the round rod (20); and a water stop strip (5) is attached to the surface of the curved plate (23).

2. The expansion joint waterproof structure for construction engineering according to claim 1, characterized in that: A second rubber pad (24) is fixed to the side of the curved plate (23) away from the square plate (22); the second rubber pad (24) is attached to the surface of the water stop strip (5); the second rubber pad (24) is used to increase the sealing performance between the second rubber pad and the water stop strip (5).

3. The expansion joint waterproof structure for construction engineering according to claim 1, characterized in that: The sealing assembly (15) further comprises a bent plate (25), the bent plate (25) comprising a horizontal portion and a vertical portion, the vertical portion of the bent plate (25) being attached to the surface of the water stop strip (5).

4. The expansion joint waterproof structure for construction engineering according to claim 3, characterized in that: A rubber pad three (26) is fixed to one side of the vertical portion of the bent plate (25) close to the water stop strip (5). The rubber pad three (26) is attached to the surface of the water stop strip (5). The rubber pad three (26) is used to increase the sealing performance between the rubber pad three (26) and the water stop strip (5).

5. The expansion joint waterproof structure for construction engineering according to claim 1, characterized in that: The end of the circular tube (16) is provided with an inclined surface (34), and the recessed portion (10) of the middle plate (9) is fitted on the surface of the inclined surface (34).

6. The expansion joint waterproof structure for construction engineering according to claim 1, characterized in that: The inner wall of the circular tube (16) is provided with a strip groove (18), and the strip groove (18) is connected to the water inlet hole (17).

7. The expansion joint waterproof structure for construction engineering according to claim 1, characterized in that: The drainage assembly (27) comprises a drainage pipe (30). A drainage port (28) is provided on the side of the U-shaped member (7). The drainage pipe (30) is connected to the drainage port (28). The drainage pipe (30) is pre-buried inside the wall (1). An inner pipe (31) is slidably connected inside the drainage pipe (30). A connecting piece (29) is movably penetrated through the end of the circular tube (16). The end of the connecting piece (29) is fixed to the end of a water-swellable rubber column (19). The other end of the connecting piece (29) is fixed to the inner wall of the inner pipe (31) through a circular column. A drainage end (32) is provided at the end of the inner pipe (31). A cap (33) is threadedly connected to the end of the drainage end (32). The cap (33) is located inside the drainage pipe (30).

8. The expansion joint waterproof structure for construction engineering according to claim 7, characterized in that: The surface of the cap (33) is provided with anti-slip stripes for increasing the friction of the contact surface.

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