A waterproof device for the connection between a pile head and a basement floor

Abstract

The invention provides a waterproof device for the connection between pile head and basement bottom plate, which comprises a supporting mechanism for storing waterproof mortar, the supporting mechanism is sleeved on the side wall of the pile head, and the surface of the pile head is coated with a layer of permeable crystalline waterproof coating; a sealing mechanism for waterproofing spliced steel bars is arranged above the pile head, and the sealing mechanism increases the stability of the connection between the supporting mechanism and the pile head; a closing mechanism for closing the top end of the casing and compressing and fixing the top end of the waterproof roll layer is installed at the top end of the casing, and a grouting mechanism for injecting waterproof mortar into the casing is installed inside the closing mechanism. The waterproof device for the connection between pile head and basement bottom plate has the advantage of avoiding damage to the waterproof roll layer at the connection between the cushion layer and the pile foundation.

Description

Technical Field

[0001] This invention relates to the field of pile head waterproofing technology, and in particular to a waterproofing device at the connection between the pile head and the basement floor slab. Background Technology

[0002] With the increasing scarcity of construction land in large and medium-sized cities, high-rise and super high-rise buildings are becoming more and more common, and the number and area of ​​basements are also increasing. As a result, some buildings are affected by basement leaks, which makes the waterproofing of basements particularly important, especially for projects that use reinforced concrete pile foundations and reinforced concrete base slabs. The connection between the two is usually the key and weak point in the waterproofing construction of the basement.

[0003] From the perspective of basement waterproofing, the waterproofing layer of the basement floor slab needs to be continuous to completely block the infiltration of groundwater. This requires the floor slab to be completely separated from the pile heads. However, from the perspective of structural stress, the basement floor slab and the cast-in-place piles must be connected as a whole to effectively resist the axial force, shear force, and bending moment generated by the superstructure. The usual practice is to apply a penetrating crystalline waterproofing coating to the surface of the pile heads, and then lay the waterproofing membrane on the surface of the floor slab upwards along the pile body. The two work together to block the infiltration of groundwater. The waterproofing membrane under the basement floor slab is usually laid on the surface of the cushion layer. Since the cushion layer is laid directly on the soil surface, there is no steel reinforcement connecting the cushion layer to the concrete floor slab and the pile foundation. This results in different settlement between the cushion layer and the pile foundation. The waterproofing membrane at the connection between the cushion layer and the pile foundation is damaged due to tension, which leads to groundwater leakage from this point.

[0004] Therefore, it is necessary to provide a new waterproofing device for the connection between the pile head and the basement floor slab to solve the above problems. Summary of the Invention

[0005] The technical problem solved by this invention is to provide a waterproofing device for the connection between the pile head and the basement floor slab to avoid damage to the waterproof membrane at the connection between the foundation and the pile.

[0006] To solve the above-mentioned technical problems, the waterproofing device at the connection between the pile head and the basement floor slab provided by the present invention includes: a support mechanism for storing waterproof mortar, the support mechanism being fitted onto the side wall of the pile head, and the surface of the pile head being coated with a penetrating crystalline waterproof coating layer; the support mechanism includes a first fixing plate, a concrete pad layer being laid on the surface of the soil layer and the first fixing plate, an elastic rubber plate being installed between the first fixing plate and the base plate, and the base plate being located inside the soil layer; a protective casing is fixedly connected to the center of the top surface of the first fixing plate, and a waterproof membrane layer is adhered to the surface of the concrete pad layer and the side wall of the protective casing; a device for splicing reinforcing bars is provided above the pile head. A waterproof sealing mechanism includes a water-swellable sleeve fitted onto the side wall of the spliced ​​reinforcing bars, and an annular cover plate fitted onto the side wall of the spliced ​​reinforcing bars and abutting against the water-swellable sleeve; multiple connecting rods with "L"-shaped side walls are fixedly connected to the side wall of the cover plate, and a pull plate with a "V"-shaped side wall cross-section is fixedly connected to the bottom end of the connecting rods, and the pull plate and the connecting rods are slidably connected to the interior of the protective casing; a sealing mechanism for sealing the top of the protective casing and compressing and fixing the top of the waterproof membrane layer is installed at the top of the protective casing, and a grouting mechanism for injecting waterproof mortar into the interior of the protective casing is installed inside the sealing mechanism.

[0007] Preferably, the closing mechanism includes an annular top plate fixed to the top of the casing, the inner diameter of the top plate being larger than the diameter of the pile head, and the pull plate and the connecting rod extending into the interior of the casing from the gap between the top plate and the pile head.

[0008] Preferably, the surface of the top plate is provided with an annular mounting groove, and multiple positioning screws are fixedly connected inside the mounting groove. A first sealing ring and a pressure ring are fitted onto the side wall of the positioning screw, and the pressure ring and the first sealing ring are fixed inside the mounting groove by a nut threadedly connected to the positioning screw. The first sealing ring, with a trapezoidal side wall cross-section, extends into the inside of the protective sleeve, and the first sealing ring abuts against and squeezes the side wall of the connecting rod.

[0009] Preferably, a fixing cylinder is fitted onto the top of the protective sleeve, and a connecting ring is fixedly connected at the center of the interior of the fixing cylinder, with the connecting ring abutting against the surface of the top plate; a second sealing ring is installed at the bottom of the fixing cylinder, and the side wall of the fixing cylinder is threadedly connected to a plurality of fixing screws, with the fixing screws pressing the second sealing ring to compress the top of the waterproof membrane layer; a second waterproof mortar layer is poured onto the top of the fixing cylinder.

[0010] Preferably, the grouting mechanism includes a grouting pipe, and the grouting pipe and a through hole for venting are symmetrically installed on both sides of the top plate. A sealing block and a limiting rod are installed inside the grouting pipe. The sealing block, which is funnel-shaped inside, is engaged with a sealing ball, and a spring is installed between the sealing ball and the limiting rod.

[0011] Preferably, a plurality of first support rods are fixedly connected to the bottom surface of the first fixed plate, a second support rod is slidably connected inside the first support rod, and the bottom end of the second support rod is fixedly connected to the base plate.

[0012] Preferably, a second annular fixing plate is obliquely fixedly connected to the edge of the first fixing plate, and the thickness of the first fixing plate decreases from the edge towards the middle.

[0013] Preferably, the first fixing plate and the bottom plate are respectively fixedly connected to the two ends of the fixing ring, and the two ends of the rubber plate are respectively engaged with the inside of the fixing ring; the side wall of the fixing ring is threadedly connected to a plurality of fixing screws, the fixing screws press the end of the rubber plate, and the side wall of the rubber plate has a wavy structure.

[0014] Preferably, a mortar protective layer is laid on the surface of the waterproof membrane layer, and a concrete base slab is poured on the surface of the mortar protective layer and the pile head, with the spliced ​​steel bars entering the interior of the concrete base slab.

[0015] Compared with related technologies, the waterproofing device at the connection between the pile head and the basement floor slab provided by this invention has the following beneficial effects:

[0016] This invention provides a waterproofing device for the connection between a pile head and a basement floor slab. After the penetrating crystalline waterproof coating layer on the surface of the pile head is used, the support mechanism is used to cover the surface of the pile head before pouring the concrete cushion layer, thereby accelerating the construction efficiency.

[0017] After the construction of the waterproof membrane on the concrete cushion layer and the sidewall of the casing is completed, waterproof mortar is injected into the support mechanism. The waterproof mortar pushes the base plate outward and simultaneously pushes the rubber plate outward, increasing the compressive force and stability of the base plate and the rubber plate inside the soil layer, so that the support mechanism provides effective support for the concrete cushion layer. Moreover, the overlap between the waterproof membrane layer on the surface of the concrete cushion layer and the waterproof membrane layer on the surface of the casing is located above the first fixing plate. When the concrete cushion layer settles unevenly, it squeezes the support mechanism. Under the action of the support mechanism and the solidified first waterproof mortar layer, it provides support for the concrete cushion layer and the waterproof membrane layer, reducing the tensile force on the overlap between the waterproof membrane layers and preventing damage to the waterproof membrane layer at this point.

[0018] Furthermore, when the concrete cushion layer presses down on the support mechanism, the support mechanism transmits the pressure to the spliced ​​steel bars through the sealing mechanism, so that the pile foundation directly bears the load on the concrete cushion layer. This is conducive to the uniform settlement of the concrete cushion layer, the pile head and the concrete base plate, thereby protecting the waterproof membrane layer and preventing the waterproof membrane layer from being damaged due to tension. Attached Figure Description

[0019] Figure 1 A schematic diagram of a preferred embodiment of the waterproofing device for the connection between the pile head and the basement floor slab provided by the present invention;

[0020] Figure 2 for Figure 1 The diagram shows an enlarged view of the structure at point A.

[0021] Figure 3 for Figure 2 The diagram shows an enlarged view of the structure at point B.

[0022] Figure 4 for Figure 2 The diagram shows an enlarged view of the structure at point C.

[0023] Figure 5 for Figure 4 The top view of the cover plate structure shown;

[0024] Figure 6 for Figure 4 The diagram shows a top view of the internal structure of the casing.

[0025] Figure 7 for Figure 1 The first fixed plate structure shown is a bottom view.

[0026] Numbered in the diagram: 1. Pile head; 11. Spliced ​​reinforcing steel; 12. Penetrating crystalline waterproof coating layer; 2. Concrete base slab; 21. Mortar protective layer; 22. Waterproof membrane layer; 23. Concrete cushion layer; 3. Support mechanism; 31. First fixing plate; 32. Base slab; 33. Rubber sheet; 34. First waterproof mortar layer; 35. First support rod; 36. Second support rod; 37. Casing; 38. Second fixing plate; 39. Fixing ring; 310. Fixing screw. 4. Sealing mechanism; 41. Water-swellable sleeve; 42. Cover plate; 43. Connecting rod; 44. Pull plate; 5. Closing mechanism; 51. First sealing ring; 52. Positioning screw; 53. Pressure ring; 54. Mounting groove; 55. Fixing cylinder; 56. Connecting ring; 57. Second sealing ring; 58. Top plate; 59. Second waterproof mortar layer; 6. Grouting mechanism; 61. Grouting pipe; 62. Sealing block; 63. Sealing ball; 64. Limiting rod; 65. Spring. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Please see Figures 1 to 7 ,in Figure 1 A schematic diagram of a preferred embodiment of the waterproofing device for the connection between the pile head and the basement floor slab provided by the present invention; Figure 2 for Figure 1 The diagram shows an enlarged view of the structure at point A. Figure 3 for Figure 2 The diagram shows an enlarged view of the structure at point B. Figure 4 for Figure 2 The diagram shows an enlarged view of the structure at point C. Figure 5 for Figure 4 The top view of the cover plate structure shown; Figure 6 for Figure 4 The diagram shows a top view of the internal structure of the casing. Figure 7 for Figure 1 The first fixed plate structure shown is a bottom view.

[0029] A waterproofing device for the connection between a pile head and a basement floor slab includes a support mechanism 3 for storing waterproof mortar. The support mechanism 3 is fitted onto the side wall of the pile head 1, and the surface of the pile head 1 is coated with a penetrating crystalline waterproof coating layer 12. The penetrating crystalline waterproof coating is a rigid waterproof material made of cement as a base material and mixed with active chemical substances. Its core function is to form insoluble crystals inside the concrete through a chemical reaction, blocking the capillary pores and micro-cracks in the pile head 1, thereby improving the waterproofness and durability of the pile head 1 and preventing groundwater from seeping upward through the pile head 1.

[0030] The support mechanism 3 includes a first fixing plate 31. A concrete pad 23 is laid on the surface of the soil layer and the first fixing plate 31. An elastic rubber plate 33 is installed between the first fixing plate 31 and the base plate 32, and the base plate 32 is located inside the soil layer. A protective casing 37 is fixedly connected to the center of the top surface of the first fixing plate 31. During use, a waterproof membrane layer 22 is adhered to the surface of the concrete pad 23 and the sidewalls of the protective casing 37 to prevent groundwater from seeping upwards through the gap between the concrete pad 23 and the protective casing 37. The overlap between the waterproof membrane layer 22 on the surface of the concrete pad 23 and the waterproof membrane layer 22 on the surface of the protective casing 37 is located at the first... Above the fixing plate 31, the first fixing plate 31 and the bottom plate 32 are filled with the first waterproof mortar layer 34. The first waterproof mortar layer protects the penetrating crystalline waterproof coating layer 12 on the surface of the pile head 1 and also provides support for the first fixing plate 31 and the bottom plate 32, thereby providing support for the concrete pad 23 by the first fixing plate 31. When the concrete pad 23 settles unevenly, it squeezes the first fixing plate 31. The first fixing plate 31 provides support for the concrete pad 23 and the waterproof membrane layer 22 on the aligned surface, reducing the tensile force on the overlap between the waterproof membrane layers 22 and preventing damage to the waterproof membrane layer 22 at this point.

[0031] Multiple first support rods 35 are fixedly connected to the bottom surface of the first fixed plate 31. Second support rods 36 are slidably connected inside the first support rods 35, and the bottom end of the second support rods 36 is fixedly connected to the base plate 32. In order to provide support for the first fixed plate 31 through the support rods when no waterproof mortar is poured inside the support mechanism 3, thereby preventing the first fixed plate 31 from shifting during the pouring of the concrete cushion layer 23; and when waterproof mortar is continuously injected into the support mechanism 3, the waterproof mortar presses the base plate 32 downward, pushing the first support rods 35 and the base plate 32 to move downward and squeeze the soil layer, increasing the squeezing force between the base plate 32 and the soil layer, and improving the stability of the base plate 32 and the first fixed plate 31 during use.

[0032] An annular second fixing plate 38 is obliquely fixedly connected to the edge of the first fixing plate 31. The first fixing plate 38 and the first fixing plate 31 form a water-blocking steel plate at the junction of the concrete pad 23 and the casing 37, reducing the infiltration of groundwater and increasing waterproof performance. The thickness of the first fixing plate 31 decreases from the edge to the middle to facilitate the concrete pad 23, which is connected to the first fixing plate 31, to be embedded downward into the top surface of the first fixing plate 31, increasing the stability and firmness of the junction and facilitating the concrete pad 23 to squeeze the first fixing plate 31, preventing the two from separating.

[0033] A sealing mechanism 4 for waterproofing the spliced ​​reinforcing bars 11 is provided above the pile head 1. The sealing mechanism 4 includes a water-swellable sleeve 41, which is fitted onto the side wall of the spliced ​​reinforcing bars 11. An annular cover plate 42 is fitted onto the side wall of the spliced ​​reinforcing bars 11 and abuts against the water-swellable sleeve 41. Multiple connecting rods 43 with "L"-shaped side walls are fixedly connected to the side wall of the cover plate 42. The bottom end of each connecting rod 43 is fixedly connected to a pull plate 44 with a "V"-shaped side wall cross-section. The pull plate 44 and the connecting rods 43 are slidably connected to the interior of the casing 37. To prevent groundwater from seeping upwards along the reinforcing bars, the cover plate 4 is used when the spliced ​​reinforcing bars 11 come into contact with the penetrating crystalline waterproof coating layer 12 and when the concrete base slab 2 is poured. 2. Fix it to prevent the water-swellable sleeve 41 from shifting; after injecting waterproof mortar into the casing 37, the waterproof mortar squeezes the elastic pull plate 44, causing the pull plate 44 to expand outward, increasing the stability and firmness of the pull plate 44 in the waterproof mortar; when the water-swellable sleeve 41 expands when it comes into contact with water, the water-swellable sleeve 41 presses down on the cover plate 42, and the solidified first waterproof mortar layer 34 pulls the cover plate 42 down through the pull plate 44 and the connecting rod 43, causing the water-swellable sleeve 41 to expand inward or downward, increasing the compressive force and sealing between the water-swellable sleeve 41 and the splicing steel bar 11 and the penetrating crystalline waterproof coating layer 12, and preventing leakage at the connection between the splicing steel bar 11 and the pile head 1. When the concrete cushion layer 23 presses down on the support mechanism 3, the support mechanism 3 transmits the pressure to the spliced ​​steel bar 11 through the sealing mechanism 4, so that the pile foundation directly bears the load on the concrete cushion layer 23. This is conducive to the uniform settlement of the concrete cushion layer 23, the pile head 1 and the concrete base slab 2, thereby protecting the waterproof membrane layer 22 and avoiding damage to the waterproof membrane layer 22 due to tension.

[0034] The top of the casing 37 is equipped with a sealing mechanism 5 for sealing the top of the casing 37 and compressing and fixing the top of the waterproof membrane layer 22. The sealing mechanism 5 includes an annular top plate 58, which is fixed to the top of the casing 37. The inner diameter of the top plate 58 is larger than the diameter of the pile head 1. The pull plate 44 and the connecting rod 43 extend into the interior of the casing 37 from the gap between the top plate 58 and the pile head 1. When the pull plate 44 is inserted into the interior of the casing 37, the pull plate 44 is squeezed to shrink, making it easier for the pull plate 44 and the connecting rod 43 to be inserted into the interior of the casing 37 from the gap between the top plate 58 and the pile head 1.

[0035] The surface of the top plate 58 is provided with an annular mounting groove 54. Multiple positioning screws 52 are fixedly connected inside the mounting groove 54. A first sealing ring 51 and a pressure ring 53 are fitted onto the sidewalls of the positioning screws 52. A nut is used to thread a connection between the pressure ring 53 and the positioning screw 52, ​​fixing the pressure ring 53 and the first sealing ring 51 inside the mounting groove 54. The first sealing ring 51, with a trapezoidal sidewall cross-section, extends into the interior of the protective sleeve 37, and the first sealing ring 51 abuts against and presses against the sidewall of the connecting rod 43. When it is necessary to seal the top surface of the protective sleeve 37, the first sealing ring 51 and the pressure ring 53 are placed inside the mounting groove 54, with the trapezoidal sidewall of the first sealing ring 51 extending into the interior of the protective sleeve 37. As the first sealing ring 51... As the first sealing ring 51 enters, it gradually adheres to the sidewall of the penetrating crystalline waterproof coating layer 12 and the connecting rod 43. The nut is rotated downwards along the sidewall of the positioning screw 52, ​​causing the nut to press against the pressure ring 53 and the first sealing ring 51, making the first sealing ring 51 tightly adhere to the top plate 58 and the sidewall of the penetrating crystalline waterproof coating layer 12, filling the gap between the pile head 1 and the top plate 58. As waterproof mortar is continuously injected into the casing 37, the waterproof mortar presses against the trapezoidal side of the first sealing ring 51's sidewall. Under lateral pressure, the first sealing ring 51 further adheres to the sidewall of the connecting rod 43 and the penetrating crystalline waterproof coating layer 12, further improving the sealing performance inside the casing 37 and preventing mortar leakage.

[0036] A fixing cylinder 55 is fitted onto the top of the protective sleeve 37. A connecting ring 56 is fixedly connected to the center of the interior of the fixing cylinder 55, and the connecting ring 56 abuts against the surface of the top plate 58. A second sealing ring 57 is installed at the bottom of the fixing cylinder 55. The side wall of the fixing cylinder 55 is threadedly connected to multiple fixing screws 310, and the fixing screws 310 compress the second sealing ring 57 to compress the top of the waterproof membrane layer 22. A second waterproof mortar layer 59 is poured onto the top of the fixing cylinder 55. When the waterproof membrane layer 22 at the top of the protective sleeve 37 is needed, the fixing cylinder 55 is fitted onto the top of the protective sleeve 37, and the connecting ring 56 abuts against the top surface of the protective sleeve 37, fixing the fixing cylinder 55 in place. The second sealing ring 57 at the bottom of the fixed cylinder 55 overlaps with the top of the waterproof membrane layer 22. The fixing screw 310 is rotated inwards towards the fixed cylinder 55, pressing the second sealing ring 57 inwards. This causes the second sealing ring 57 to press against the top of the waterproof membrane layer 22, making the top of the waterproof membrane layer 22 tightly adhere to the side wall of the casing 37, thus fixing the top of the waterproof membrane layer 22. Simultaneously, the fixed cylinder 55 is fixed to the surface of the casing 37. Under the combined action of the waterproof membrane layer 22 and the second sealing ring 57, groundwater seepage from the top of the casing 37 is prevented. Furthermore, the top of the fixed cylinder 55 naturally forms a mold for pouring waterproof mortar, facilitating the sealing of the top of the sealing mechanism 4 and leveling the top of the pile head 1 for future construction.

[0037] The closure mechanism 5 is internally equipped with a grouting mechanism 6 for injecting waterproof mortar into the casing 37. The grouting mechanism 6 includes a grouting pipe 61. The grouting pipe 61 and a through hole for venting are symmetrically installed on both sides of the top plate 58. A sealing block 62 and a limiting rod 64 are installed inside the grouting pipe 61. The funnel-shaped sealing block 62 engages with a sealing ball 63, and a spring 65 is installed between the sealing ball 63 and the limiting rod 64. When grout needs to be injected into the inner diameter of the support mechanism 3, the grouting machine is inserted into the grouting pipe 61. The mortar enters the sealing block 62 and presses the sealing ball 63 downward, causing the sealing ball 63 to move downward and compress the spring 65, opening the grouting pipe 61 to facilitate the mortar entering the support mechanism 3. When the mortar inside the grouting pipe 61 flows back, the spring 65 pushes the sealing ball 63 to seal the sealing block 62, preventing mortar from leaking from the support mechanism 3.

[0038] The first fixing plate 31 and the bottom plate 32 are respectively fixedly connected to the two ends of the fixing rings 39, and the two ends of the rubber plate 33 are respectively engaged with the interior of the fixing rings 39. The side wall of the fixing ring 39 is threadedly connected to a plurality of fixing screws 310 to facilitate fixing the two ends of the rubber plate 33 inside the fixing ring 39 by the fixing screws 310. The fixing screws 310 press the ends of the rubber plate 33. When the mortar fills the interior of the rubber plate 33, the mortar presses the elastic rubber plate 33, pushing the side wall of the rubber plate 33 to deform and embed into the soil layer. The side wall cross section of the rubber plate 33 has a wavy structure, so that the rubber plate 33 is embedded in the soil layer in a wavy shape, increasing the friction and extrusion force between the rubber plate 33 and the soil layer, thereby increasing the overall load-bearing capacity and stability of the support mechanism 3, which is beneficial for the support mechanism 3 to provide support for the concrete cushion layer 22.

[0039] A mortar protective layer 21 is laid on the surface of the waterproof membrane layer 22, and a concrete base slab 2 is poured on the surface of the mortar protective layer 21 and the pile head 1, and the spliced ​​steel bar 11 enters the interior of the concrete base slab 2.

[0040] The working principle of the waterproofing device at the connection between the pile head and the basement floor slab provided by this invention is as follows: During waterproofing construction, after the concrete shrinkage deformation of the pile head 1 has basically stabilized, a hole for placing the support mechanism 3 is dug on the soil surface. The surface slurry of the pile head 1 is removed down to the compacted concrete, and the defects on the surface of the pile head 1 are carefully treated to ensure a rough and clean surface. Then, the penetrating crystalline waterproof coating layer 12 is applied to the surface of the pile head 1. Four hours after the penetrating crystalline waterproof coating layer 12 is applied, the base slab 32 is placed in the hole. At this time, the base 32 provides support to the first fixing plate 31 through the support rod, and the cover plate 42 is inserted obliquely into the soil layer. A concrete cushion layer 23 is then poured on the soil surface. Due to the obstruction of the cover plate 42 and the fixing plate, the concrete does not contact the penetrating crystalline waterproof coating layer 12. The construction of the concrete cushion layer 23 can be carried out before the penetrating crystalline waterproof coating layer 12 has fully dried, thus accelerating the construction efficiency.

[0041] The water-swellable sleeve 41 is fitted onto the connection between the spliced ​​steel bar 11 and the penetrating crystalline waterproof coating layer 12. When the cover plate 42 is fitted onto the surface of the spliced ​​steel bar 11 and the pull plate 44 is placed inside the casing 37, the pull plate 44 is squeezed to shrink, making it easier for the pull plate 44 and the connecting rod 43 to be inserted into the casing 37 from the gap between the top plate 58 and the pile head 1. The cover plate 42 presses and fixes the water-swellable sleeve 41. The first sealing ring 51 and the pressure ring 53 are placed inside the mounting groove 54. The trapezoidal side of the first sealing ring 51 extends into the casing 37. As the first sealing ring 51 enters, it gradually adheres to the side wall of the penetrating crystalline waterproof coating layer 12 and the connecting rod 43. The nut is rotated downward on the side wall of the positioning screw 52. The nut squeezes the pressure ring 53 and the first sealing ring 51, so that the first sealing ring 51 is tightly attached to the top plate 58 and the side wall of the penetrating crystalline waterproof coating layer 12, filling the gap between the pile head 1 and the top plate 58.

[0042] Waterproof membrane is adhered to the concrete cushion layer 23 and the protective casing 37, with the overlap between the waterproof membrane layer 22 on the surface of the concrete cushion layer 23 and the waterproof membrane layer 22 on the surface of the protective casing 37 located above the first fixing plate 31. The fixing cylinder 55 is fitted onto the top of the protective cylinder 37, and the connecting ring 56 abuts against the top surface of the protective cylinder 37, fixing the fixing cylinder 55 to the side wall of the protective cylinder 37. At this time, the second sealing ring 57 at the bottom of the fixing cylinder 55 overlaps with the top part of the waterproof membrane layer 22. The fixing screw 310 is rotated inward toward the fixing cylinder 55, so that the fixing screw 310 presses the second sealing ring 57 inward toward the fixing cylinder 55, so that the second sealing ring 57 presses the top of the waterproof membrane layer 22, so that the top of the waterproof membrane layer 22 is tightly attached to the side wall of the protective cylinder 37, fixing the top of the waterproof membrane layer 22. At the same time, the fixing cylinder 55 is fixed to the surface of the protective cylinder 37. Under the double action of the waterproof membrane layer 22 and the second sealing ring 57, groundwater is prevented from seeping from the top of the protective cylinder 37.

[0043] Connect the nozzle of the grouting machine to the grouting pipe 61. Inject waterproof mortar into the grouting pipe 61 through the grouting machine. The mortar enters the sealing block 62 and presses down on the sealing ball 63, causing the sealing ball 63 to move downward and compress the spring 65, opening the grouting pipe 61 to facilitate the mortar entering the support mechanism 3. The surface of the top plate 58 is provided with a through hole to facilitate the air discharge from the support mechanism 3. When the waterproof mortar is sprayed out from the through hole, use a plug to seal the through hole. Continue injecting waterproof mortar into the support mechanism 3 using a grouting machine. This increases the internal pressure of the support mechanism 3, causing the waterproof mortar to compress the trapezoidal side of the first sealing ring 51. Under this lateral pressure, the first sealing ring 51 further adheres to the sidewalls of the connecting rod 43 and the penetrating crystalline waterproof coating layer 12, further improving the sealing performance inside the casing 37. As the pressure increases, the waterproof mortar presses downwards onto the base plate 32, pushing the first support rod 35 and the base plate 32 downwards to compress the soil layer, increasing the compressive force between the base plate 32 and the soil layer, and improving the stability of the base plate 32 and the first fixing plate 31 during use. The increased pressure of the waterproof mortar causes it to flow from the base plate... The gap between the base plate 32 and the pile head 1 extends into the soil layer, allowing the waterproof mortar to wrap the pile head 1 below the base plate 32, increasing the waterproof performance of the pile head 1. The waterproof mortar also mixes with the soil layer, increasing the stability of the base plate 37 in the soil layer. The waterproof mortar compresses the elastic rubber plate 33 inside the support mechanism 3, pushing the sidewall of the rubber plate 33 to deform and embed into the soil layer. The sidewall cross-section of the rubber plate 33 has a wavy structure, causing the rubber plate 33 to be embedded in the soil layer in a wavy shape, increasing the friction and compressive force between the rubber plate 33 and the soil layer, thereby increasing the overall load-bearing capacity and stability of the support mechanism 3, which is beneficial for the support mechanism 3 to provide support for the concrete cushion layer 22. Then, waterproof mortar is poured onto the surface of the fixing cylinder 56 to seal the top of the sealing mechanism 4 and level the surface of the pile head 1. After the water-swellable sleeve 41 expands upon contact with water, it presses downward against the cover plate 42. The solidified first waterproof mortar layer 34 pulls the cover plate 42 downward through the pull plate 44 and the connecting rod 43, causing the water-swellable sleeve 41 to expand inward or downward, increasing the compressive force and sealing between the water-swellable sleeve 41 and the splicing steel bar 11 and the penetrating crystalline waterproof coating layer 12, thus preventing leakage at the connection between the splicing steel bar 11 and the pile head 1. Then, the mortar protective layer 21 and the concrete base plate 2 are poured sequentially onto the surface of the waterproof membrane layer 22.

[0044] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A waterproofing device for the connection between a pile head and a basement floor slab, characterized in that, include: A support mechanism (3) for storing waterproof mortar is fitted onto the side wall of the pile head (1), and the surface of the pile head (1) is coated with a penetrating crystalline waterproof coating layer (12). The support mechanism (3) includes a first fixing plate (31), a concrete cushion layer (23) is laid on the surface of the soil layer and the first fixing plate (31), an elastic rubber plate (33) is installed between the first fixing plate (31) and the bottom plate (32), and the bottom plate (32) is located inside the soil layer; a protective sleeve (37) is fixedly connected to the top surface of the first fixing plate (31) at the center, and a waterproof membrane layer (22) is adhered to the surface of the concrete cushion layer (23) and the side wall of the protective sleeve (37); A sealing mechanism (4) for waterproofing the spliced ​​steel bars (11) is provided above the pile head (1). The sealing mechanism (4) includes a water-swellable sleeve (41), which is fitted onto the side wall of the spliced ​​steel bars (11). An annular cover plate (42) is fitted onto the side wall of the spliced ​​steel bars (11) and abuts against the water-swellable sleeve (41). Multiple connecting rods (43) with "L"-shaped side walls are fixedly connected to the side wall of the cover plate (42). The bottom end of the connecting rod (43) is fixedly connected to a pull plate (44) with a "V"-shaped side wall cross section. The pull plate (44) and the connecting rod (43) are slidably connected to the inside of the protective sleeve (37). The top of the casing (37) is equipped with a sealing mechanism (5) for sealing the top of the casing (37) and compressing and fixing the top of the waterproof membrane layer (22), and the inside of the sealing mechanism (5) is equipped with a grouting mechanism (6) for injecting waterproof mortar into the casing (37).

2. The waterproofing device at the connection between the pile head and the basement floor slab according to claim 1, characterized in that, The closing mechanism (5) includes an annular top plate (58) fixed to the top of the casing (37), the inner diameter of the top plate (58) being larger than the diameter of the pile head (1), and the pull plate (44) and the connecting rod (43) extending into the interior of the casing (37) from the gap between the top plate (58) and the pile head (1).

3. The waterproofing device at the connection between the pile head and the basement floor slab according to claim 2, characterized in that, The surface of the top plate (58) is provided with an annular mounting groove (54). Multiple positioning screws (52) are fixedly connected inside the mounting groove (54). A first sealing ring (51) and a pressure ring (53) are fitted onto the side wall of the positioning screw (52). The pressure ring (53) and the first sealing ring (51) are fixed inside the mounting groove (54) by using a nut and a threaded connection between the nut and the positioning screw (52). The first sealing ring (51), whose side wall cross-section is trapezoidal, extends into the inside of the protective sleeve (37), and the first sealing ring (51) abuts against and squeezes the side wall of the connecting rod (43).

4. The waterproofing device at the connection between the pile head and the basement floor slab according to claim 3, characterized in that, The top of the protective sleeve (37) is fitted with a fixing sleeve (55), and a connecting ring (56) is fixedly connected at the center of the inside of the fixing sleeve (55), and the connecting ring (56) abuts against the surface of the top plate (58); a second sealing ring (57) is installed at the bottom of the fixing sleeve (55), and the side wall of the fixing sleeve (55) is threadedly connected to a plurality of fixing screws (310), and the fixing screws (310) squeeze the second sealing ring (57) to compress the top of the waterproof membrane layer (22); a second waterproof mortar layer (59) is poured at the top of the fixing sleeve (55).

5. The waterproofing device at the connection between the pile head and the basement floor slab according to claim 4, characterized in that, The grouting mechanism (6) includes a grouting pipe (61). The grouting pipe (61) and a through hole for venting are symmetrically installed on both sides of the top plate (58). A sealing block (62) and a limiting rod (64) are installed inside the grouting pipe (61). The sealing block (62), which is funnel-shaped inside, is engaged with a sealing ball (63). A spring (65) is installed between the sealing ball (63) and the limiting rod (64).

6. The waterproofing device at the connection between the pile head and the basement floor slab according to claim 1, characterized in that, Multiple first support rods (35) are fixedly connected to the bottom surface of the first fixed plate (31), and the second support rod (36) is slidably connected inside the first support rod (35), and the bottom end of the second support rod (36) is fixedly connected to the base plate (32).

7. The waterproofing device at the connection between the pile head and the basement floor slab according to claim 1, characterized in that, An annular second fixing plate (38) is obliquely fixedly connected to the edge of the first fixing plate (31), and the thickness of the first fixing plate (31) decreases from the edge to the middle.

8. The waterproofing device at the connection between the pile head and the basement floor slab according to claim 1, characterized in that, The first fixing plate (31) and the bottom plate (32) are respectively fixedly connected to the fixing ring (39), and the two ends of the rubber plate (33) are respectively engaged with the inside of the fixing ring (39); the side wall of the fixing ring (39) is threadedly connected to a plurality of fixing screws (310), the fixing screws (310) press the end of the rubber plate (33), and the side wall cross section of the rubber plate (33) has a wavy structure.

9. The waterproofing device at the connection between the pile head and the basement floor slab according to claim 1, characterized in that, A mortar protective layer (21) is laid on the surface of the waterproof membrane layer (22), and a concrete base plate (2) is poured on the surface of the mortar protective layer (21) and the pile head (1), and the splicing steel bar (11) enters the interior of the concrete base plate (2).

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