A prefabricated cast-in-place component butt joint waterproof structure

Abstract

The application discloses a prefabricated cast-in-place component butt joint waterproof structure and relates to the technical field of building construction waterproofing. The application comprises a cast-in-place base body, a prefabricated base body, a cast-in-place waterproof base body and a prefabricated waterproof base body. The cast-in-place waterproof base body is arranged at the butt joint end surface of the cast-in-place base body. The cast-in-place waterproof base body is provided with cast-in-place bosses at intervals. Adjacent cast-in-place bosses enclose a clamping groove. The cast-in-place bosses are provided with a cast-in-place channel. The prefabricated waterproof base body is arranged at the butt joint end surface of the prefabricated base body. The prefabricated waterproof base body is provided with prefabricated bosses which are adapted to the clamping groove. The prefabricated bosses are provided with a prefabricated channel. The prefabricated bosses are embedded in the clamping groove. The prefabricated channel is coaxially communicated with the cast-in-place channel. The application realizes accurate positioning of components by virtue of the concave-convex occlusion structure, prolongs the detour path of water seepage, has strong waterproof sealing performance, can realize grouting and plugging by the coaxially communicated channel, is adapted to the settlement and temperature difference deformation, and has good splicing waterproof stability.

Description

Technical Field

[0001] This invention relates to the field of waterproofing technology in building construction, and more specifically, to a waterproofing structure for the connection of precast cast-in-place components. Background Technology

[0002] During the construction of prefabricated buildings, precast concrete components and cast-in-place concrete components need to be spliced ​​together at their ends. The joint between the two is a weak point in the structural waterproofing. Groundwater and water seepage from the exterior facade can easily seep into the interior of the building structure through the joint, causing problems such as damp walls, corrosion of structural steel bars, and reduced building life.

[0003] Current waterproofing methods for connecting precast and cast-in-place concrete often involve a single waterproof strip and an external waterproof steel plate, which have several drawbacks: First, relying solely on end-face compression for sealing leads to the waterproof strip easily detaching and failing under pressure when the joint cracks, resulting in poor sealing. Second, the low alignment accuracy between precast and cast-in-place components means the waterproofing structure cannot fit properly after misalignment, leading to a high probability of waterproofing failure. Third, there is no grouting channel for repairing leaks after they occur, making subsequent repairs difficult and costly, requiring external waterproofing redoing. Fourth, the anchoring stability between the waterproofing component and the concrete substrate is poor; after structural settlement or temperature deformation, the waterproofing component may peel off from the concrete substrate, creating secondary seepage gaps.

[0004] In summary, existing waterproof structures have weak alignment and limiting capabilities, poor deformation adaptability, inability to be repaired by grouting later, and insufficient anchoring stability, making it difficult to meet the construction and use requirements of long-term waterproofing and seepage prevention for prefabricated and cast-in-place components in prefabricated buildings. Summary of the Invention

[0005] The purpose of this invention is to provide a waterproof structure for the joint of precast and cast-in-place components, addressing all or part of the aforementioned problems. This structure solves the problems of misalignment, easy water seepage, unstable anchoring, and difficulty in repairing leaks during the joint waterproofing of precast and cast-in-place concrete components, improves the waterproofing effect of the joint, and adapts to structural deformation conditions.

[0006] The embodiments of the present invention are implemented as follows: In a first aspect, the present invention provides a waterproof structure for the connection of precast and cast-in-place components, including a cast-in-place substrate and a precast substrate, and further including a cast-in-place waterproof substrate and a precast waterproof substrate; The cast-in-place waterproof substrate is provided on the joint end face of the cast-in-place substrate. The cast-in-place waterproof substrate is provided with multiple sets of cast-in-place protrusions arranged at intervals. Interlocking grooves are formed between adjacent cast-in-place protrusions. A through cast-in-place channel is provided in the middle of the cast-in-place protrusion. The prefabricated waterproof substrate is disposed on the docking end face of the prefabricated substrate. The prefabricated waterproof substrate is provided with prefabricated bosses that correspond one-to-one with the snap-fit ​​grooves. A through prefabricated channel is provided in the middle of the prefabricated bosses. The precast boss is embedded in the snap-fit ​​groove, and the precast channel and the cast-in-place channel are coaxially connected.

[0007] In an optional embodiment, the cast-in-place waterproof substrate includes a waterproof main board and two sets of side sealing members; the two sets of side sealing members are respectively fixed on the lateral sides of the waterproof main board, the cast-in-place boss is formed on the surface of the waterproof main board, and the outer end face of the cast-in-place boss is flush with the outer end face of the side sealing member.

[0008] In an optional embodiment, the waterproof motherboard, the side sealing member, and the cast-in-place boss are integrally formed components.

[0009] In an optional embodiment, the side sealing member is provided with a grouting port, which connects the cast-in-place channel and the precast channel.

[0010] In an optional embodiment, the waterproof main board is fixedly connected to a pre-embedded reinforcing bar on the side facing away from the precast waterproof substrate, and the pre-embedded reinforcing bar is embedded inside the cast-in-place substrate.

[0011] In an optional embodiment, multiple embedded reinforcing bars are evenly spaced along the surface of the waterproof main board.

[0012] In an optional embodiment, the prefabricated waterproof substrate includes a prefabricated main board, which is integrally formed with the prefabricated boss.

[0013] In an optional embodiment, the prefabricated main board has several fixing through holes, and through-plate anchors are provided in the fixing through holes; one end of the through-plate anchor extends into the interior of the prefabricated substrate, and the end face of the other end of the through-plate anchor is flush with the outer surface of the prefabricated main board.

[0014] In an optional embodiment, a flexible sealing layer is laid at the interface between the prefabricated mainboard and the prefabricated substrate.

[0015] In an optional embodiment, the prefabricated boss has dimensions that match the dimensions of the snap-fit ​​channel, and after the prefabricated boss is embedded in the snap-fit ​​channel, the outer wall of the prefabricated boss fits tightly against the inner wall of the snap-fit ​​channel.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. Alignment and Limitation + Multiple Sealing and Waterproofing: This invention uses cast-in-place bosses to form interlocking grooves, and prefabricated bosses are embedded one by one into the interlocking grooves to achieve precise alignment and splicing of cast-in-place and prefabricated waterproof substrates, avoiding misalignment of components; at the same time, the outer wall of the prefabricated bosses and the inner wall of the interlocking grooves are tightly fitted to form an interlocking waterproof structure. Compared with flat rubber strip waterproofing, the interlocking structure can offset the gaps caused by concrete settlement and temperature difference deformation, block the seepage path, and greatly improve the waterproof sealing performance of the end face.

[0017] 2. Features in-situ grouting for leak repair: The cast-in-place channel and the precast channel are coaxially connected. With the grouting port opened by the side sealing component, if there is slight water seepage at the joint after the component is spliced, waterproof grout can be injected directly through the grouting port. The grout fills the splicing gap and interlocking gap along the connected channel, realizing in-situ repair of the leakage point. There is no need to break down the waterproofing externally and redo it. The operation and maintenance are convenient and the maintenance cost is low.

[0018] 3. Two-way anchoring and strong integrity: The cast-in-place waterproof substrate is pre-anchored to the inside of the cast-in-place substrate through pre-embedded bars on the slab surface, and the precast waterproof substrate is anchored to the inside of the precast substrate through through-slab anchors. The two-way anchoring makes the waterproof substrate and the concrete substrate bonded as a whole, avoiding the peeling and delamination of the waterproof components; at the same time, a flexible sealing layer is set on the bonding surface of the precast main board to seal the secondary gaps between the precast waterproof substrate and the precast substrate, and prevent water seepage at the interface.

[0019] 4. Convenient construction and suitable for prefabricated construction: Both cast-in-place and precast waterproof substrates are integrated precast components. On-site assembly can be completed simply by interlocking the concave and convex parts, without the need for on-site cutting and welding of waterproof components; the side sealing parts can seal the transverse side gaps of the waterproof substrate, achieving full enclosure waterproofing at the splicing end face, with good waterproofing closed-loop performance, and suitable for batch standardized construction of prefabricated buildings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a first-view schematic diagram of a precast cast-in-place component joint waterproof structure provided in an embodiment of the present invention; Figure 2 This is a second-view schematic diagram of a precast cast-in-place component joint waterproof structure provided in an embodiment of the present invention; Figure 3 This is a third-view schematic diagram of a precast cast-in-place component joint waterproof structure provided in an embodiment of the present invention.

[0022] icon: 1-Cast-in-place substrate, 2-Precast substrate, 3-Cast-in-place waterproof substrate, 31-Waterproof main board, 32-Side sealing component, 33-Cast-in-place boss, 34-Snap-fit ​​groove, 35-Cast-in-place channel, 36-Grouting port, 37-Embedded reinforcement, 4-Precast waterproof substrate, 41-Precast main board, 42-Precast boss, 43-Precast channel, 44-Fixing through hole, 45-Through-slab anchor. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] like Figure 1-3 As shown, this embodiment provides a waterproof structure for the joint of precast and cast-in-place components, including a cast-in-place base 1 and a precast base 2, as well as a cast-in-place waterproof base 3 and a precast waterproof base 4. The cast-in-place waterproof base 3 is disposed on the joint end face of the cast-in-place base 1. The cast-in-place waterproof base 3 is provided with multiple sets of spaced cast-in-place protrusions 33, and a snap-fit ​​groove 34 is formed between adjacent cast-in-place protrusions 33. A through cast-in-place channel 35 is provided in the middle of the cast-in-place protrusion 33. The precast waterproof base 4 is disposed on the joint end face of the precast base 2. The precast waterproof base 4 is provided with precast protrusions 42 that are adapted to the snap-fit ​​grooves 34 one by one. A through precast channel 43 is provided in the middle of the precast protrusions 42. The precast protrusions 42 are embedded in the snap-fit ​​grooves 34, and the precast channel 43 and the cast-in-place channel 35 are coaxially connected.

[0030] In detail, the cast-in-place base 1 is formed by integrally casting impermeable concrete on site, while the precast base 2 is a standardized precast impermeable concrete component in the factory. The two are vertically aligned and spliced ​​together at their ends. The cast-in-place waterproof base 3 is fixedly installed on the joint end face of the cast-in-place base 1. The cast-in-place waterproof base 3 is integrally formed from steel plate, with multiple sets of cast-in-place protrusions 33 arranged at equal intervals. The concave rectangular interlocking groove 34 is formed between two adjacent sets of cast-in-place protrusions 33. The cast-in-place protrusions 33 have through-type cast-in-place channels 35 along their axial thickness to facilitate the flow and filling of grouting material.

[0031] The precast waterproof substrate 4 is attached and fixed to the vertical joint end face of the precast substrate 2. The precast waterproof substrate 4 is integrally formed from steel plates of the same specification, with multiple sets of rectangular precast bosses 42. The position and shape of the precast bosses 42 are matched with the snap-fit ​​grooves 34 one by one. The precast bosses 42 are coaxially opened with a through precast channel 43, and the diameter of the precast channel 43 is the same as that of the cast-in-place channel 35. After on-site hoisting and splicing, the precast bosses 42 are vertically embedded in the snap-fit ​​grooves 34, and the precast channel 43 is coaxially aligned and connected with the cast-in-place channel 35 to form a through grouting channel.

[0032] Understandably, the interlocking and interlocking mechanism ensures precise alignment of the cast-in-place substrate 1 and the precast substrate 2, preventing misalignment and displacement during splicing. The coaxial connecting channel provides a channel for later grouting repair, and the interlocking steel plate structure extends the seepage path, initially blocking direct water seepage at the end face and improving the waterproofing capability of the spliced ​​foundation.

[0033] In this embodiment, the cast-in-place waterproof substrate 3 includes a waterproof main board 31 and two sets of side sealing members 32; the two sets of side sealing members 32 are respectively fixed on the two sides of the waterproof main board 31 in the lateral direction, and the cast-in-place boss 33 is formed on the surface of the waterproof main board 31, with the outer end face of the cast-in-place boss 33 being flush with the outer end face of the side sealing member 32.

[0034] In detail, the cast-in-place waterproof substrate 3 consists of a waterproof main plate 31 and two sets of side sealing members 32. The two sets of side sealing members 32 are symmetrically arranged vertically and fixedly connected to the left and right sides of the waterproof main plate 31, forming a U-shaped enclosed waterproof steel plate structure. The cast-in-place boss 33 is vertically integrally formed on the side of the waterproof main plate 31 facing the precast waterproof substrate 4. The outer mating end face of the cast-in-place boss 33 and the outer mating end face of the side sealing member 32 are flush and coplanar, ensuring seamless fit of the splicing end faces without any misalignment gaps. The width of the side sealing member 32 is greater than the width of the cast-in-place boss 33, which can completely seal the horizontal side gaps of the cast-in-place boss 33 and enclose the two ends of the snap-fit ​​channel 34.

[0035] Understandably, the side sealing components 32 on both sides close the horizontal side gaps of the splicing, forming a fully enclosed waterproof closed loop to prevent water from seeping in from the side of the cast-in-place boss 33; the end faces are set flush to ensure that the steel plate splicing and extrusion are evenly stressed, preventing local stress cracking and water seepage.

[0036] In this embodiment, the waterproof main board 31, the side sealing member 32, and the cast-in-place boss 33 are integrally formed components.

[0037] In detail, the waterproof main board 31, the side sealing component 32, and the cast-in-place boss 33 are all integrally formed from a single piece of waterproof steel plate, with no secondary splicing or adhesive seams. The steel plate is corrosion resistant, has high structural rigidity, and has no micropores for water seepage inside the components.

[0038] Understandably, this structure eliminates the risk of water seepage from the splicing of the steel plate in-situ waterproof substrate 3. The overall structure has high strength and strong resistance to concrete deformation and compression. The service life of the steel plate is synchronized with that of the in-situ substrate 1, avoiding delamination, cracking and water seepage of the split components.

[0039] In this embodiment, the side sealing member 32 is provided with a grouting port 36, which connects the cast-in-place channel 35 and the precast channel 43.

[0040] In detail, each set of side sealing components 32 has a horizontally opened conical grouting port 36 with a larger outer diameter and a smaller inner diameter at the lower part. The outer end of the grouting port 36 is connected to the external grouting equipment, and the inner end of the grouting port 36 is directly connected to the cast-in-place channel 35, and then connected to the coaxially connected precast channel 43. The height of the grouting port 36 is lower than the middle position of the cast-in-place boss 33 to avoid the grouting material from overflowing.

[0041] It is understood that this embodiment can directly connect to the grouting equipment from the outside of the component without breaking the concrete structure; the grouting material can fully cover and fill the gaps between the steel plates and the joints of the substrate along the connecting channel, realizing in-situ low-pressure grouting repair of the leakage point and reducing the cost of subsequent maintenance and construction.

[0042] In this embodiment, the waterproof main board 31 is fixedly connected to the embedded reinforcement 37 on the side facing away from the precast waterproof substrate 4, and the embedded reinforcement 37 is embedded inside the cast-in-place substrate 1.

[0043] In detail, the embedded reinforcement 37 is welded and fixed on the side of the waterproof main board 31 facing away from the precast waterproof substrate 4. The embedded reinforcement 37 is made of rust-proof threaded steel bar. The rear end of the embedded reinforcement 37 is completely embedded in the concrete of the cast-in-place substrate 1, and the front end is fully welded and sealed to the surface of the steel waterproof main board 31. The weld is coated with rust-proof and waterproof coating to prevent water seepage at the weld point.

[0044] It is understood that this embodiment can achieve a rigid anchoring bond between the steel cast-in-place waterproof substrate 3 and the cast-in-place substrate 1, resist the peeling tensile force caused by structural settlement and temperature difference deformation, prevent the waterproof steel plate from delaminating at the interface with the cast-in-place substrate to form a seepage crack, and improve the overall integrity of the bond between the two.

[0045] In this embodiment, multiple pre-embedded reinforcing bars 37 are evenly spaced along the surface of the waterproof main board 31.

[0046] In detail, a total of 4-8 pre-embedded bars 37 are set. All pre-embedded bars 37 are evenly and equidistantly arranged in the transverse direction along the surface of the waterproof main plate 31. The depth of the pre-embedded bars 37 embedded in the cast-in-place base is generally at least 8mm. The anchoring parameters are standardized and controllable.

[0047] It is understandable that this embodiment can achieve uniform distribution of anchoring force, avoiding excessive local anchoring force that could lead to concrete cracking; uniform anchoring throughout the entire area improves the overall bonding stability of the steel waterproof main board 31, preventing water seepage through warping gaps on the board surface.

[0048] In this embodiment, the prefabricated waterproof substrate 4 includes a prefabricated main board 41, which is integrally formed with the prefabricated boss 42.

[0049] In detail, the prefabricated waterproof substrate 4 is composed of a prefabricated main board 41 and a prefabricated boss 42. Both are made of galvanized waterproof steel plate, which is cut and formed in one piece in the factory. The surface of the board is treated with anti-corrosion and anti-rust treatment. The thickness of the prefabricated main board 41 is the same as that of the waterproof main board 31 to ensure balanced stress distribution.

[0050] Understandably, the steel prefabricated waterproof substrate 4 has no splicing gaps, resulting in good overall waterproof performance; it is prefabricated in a standardized factory with high dimensional accuracy, and can be directly aligned and installed on site, significantly shortening the on-site assembly construction period.

[0051] In this embodiment, the prefabricated main board 41 has a plurality of fixing through holes 44, and a through-plate anchor 45 is provided in the fixing through holes 44; one end of the through-plate anchor 45 extends into the interior of the prefabricated base 2, and the end face of the other end of the through-plate anchor 45 is flush with the outer plate surface of the prefabricated main board 41.

[0052] In detail, the precast main board 41 has four sets of rectangular fixing through holes 44 vertically, and stainless steel anti-rust plate anchors 45 are installed inside the fixing through holes 44. The rear end of the plate anchor 45 is extended and extends into the concrete of the precast base 2 for anchoring. The front end face is polished and is completely flush with the outer surface of the precast main board 41, without any protrusions or depressions.

[0053] It is understandable that this embodiment achieves full-area anchoring and fixing of the steel prefabricated waterproof substrate 4 and the prefabricated substrate 2 to prevent the interface between the two from peeling off; the end faces are flush and do not interfere with the concave and convex fitting and docking, ensuring that the steel plate protrusion and the channel are completely fitted and sealed.

[0054] In this embodiment, a flexible sealing layer is laid at the joint between the prefabricated main board 41 and the prefabricated substrate 2.

[0055] In detail, the entire surface of the prefabricated main board 41 that is bonded to the prefabricated substrate 2 is coated with polyurethane waterproof coating, which is cured to form a flexible sealing layer, fully covering and sealing the gaps between the board surfaces; at the same time, the outer dimensions of the prefabricated boss 42 and the snap-fit ​​channel 34 are interference fit dimensions, and after the steel prefabricated boss 42 is installed, the outer wall of the steel snap-fit ​​channel 34 is squeezed and sealed to fit tightly.

[0056] Understandably, polyurethane waterproof coating has strong adhesion, excellent aging resistance and seepage prevention performance, and seals the secondary interface gaps between the steel precast main board 41 and the precast substrate to achieve secondary waterproofing; the steel plate bosses and channels are press-fitted together to eliminate the interlocking gaps and form a press-sealed waterproof layer, which blocks the seepage channels in multiple ways, adapts to the slight deformation of concrete, and achieves long-term seepage prevention and waterproofing.

[0057] Overall construction process description S1. Prefabrication: The factory cuts the waterproof steel plate and prepares the prefabricated waterproof base 4 with prefabricated bosses 42 and through-plate anchors 45. Simultaneously, the cast-in-place waterproof base 3 is processed, and the embedded ribs 37 are welded and fixed on the surface of the waterproof main plate 31 in advance. The prefabricated main plate 41 is coated with polyurethane waterproof coating on the substrate surface and cured to form a flexible sealing layer. S2, pre-embedded on the cast-in-place side: tie the steel reinforcement cage of the cast-in-place base 1, tie and fix the pre-embedded steel reinforcement 37 of the cast-in-place waterproof base 3 to the cast-in-place steel reinforcement cage, set up the formwork and pour concrete to solidify and form the cast-in-place base 1, so that the cast-in-place waterproof base 3 fits and is fixed to the joint end face of the cast-in-place base 1. S3. Component alignment and splicing: Hoist the precast base 2 so that the precast boss 42 is aligned and embedded into the interlocking groove 34 between the cast-in-place boss 33, and the concave and convex interlocking is completed. At this time, the cast-in-place channel 35 and the precast channel 43 are coaxially connected, and the side sealing parts 32 surround and seal the splicing side gap. S4. Joint sealing and reinforcement: Apply surface sealing treatment to the splicing gaps on the outside of precast substrate 2 and cast-in-place substrate 1. S5. Post-continuation leakage repair: When water seepage occurs at the joint, waterproof grout is injected directly through the grouting port 36 of the side sealing part 32. The grout fills the gaps between the steel plates and the splicing joints along the connecting channel to complete the in-situ waterproof repair.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A waterproof structure for the joint of precast and cast-in-place components, comprising a cast-in-place substrate and a precast substrate, characterized in that, This also includes cast-in-place waterproof substrates and precast waterproof substrates; The cast-in-place waterproof substrate is provided on the joint end face of the cast-in-place substrate. The cast-in-place waterproof substrate is provided with multiple sets of cast-in-place protrusions arranged at intervals. Interlocking grooves are formed between adjacent cast-in-place protrusions. A through cast-in-place channel is provided in the middle of the cast-in-place protrusion. The prefabricated waterproof substrate is disposed on the docking end face of the prefabricated substrate. The prefabricated waterproof substrate is provided with prefabricated bosses that correspond one-to-one with the snap-fit ​​grooves. A through prefabricated channel is provided in the middle of the prefabricated bosses. The precast boss is embedded in the snap-fit ​​groove, and the precast channel and the cast-in-place channel are coaxially connected.

2. The waterproof structure for the joint of precast cast-in-place components according to claim 1, characterized in that, The cast-in-place waterproof substrate includes a waterproof main board and two sets of side sealing members; the two sets of side sealing members are respectively fixed on the horizontal sides of the waterproof main board, and the cast-in-place boss is formed on the surface of the waterproof main board, with the outer end face of the cast-in-place boss being flush with the outer end face of the side sealing member.

3. The waterproof structure for the joint of precast cast-in-place components according to claim 2, characterized in that, The waterproof mainboard, the side sealing member, and the cast-in-place boss are integrally formed components.

4. The waterproof structure for the joint of precast cast-in-place components according to claim 2, characterized in that, The side sealing member has a grouting port, which connects the cast-in-place channel and the precast channel.

5. The waterproof structure for the joint of precast cast-in-place components according to claim 2, characterized in that, The waterproof main board is fixedly connected to the embedded reinforcement on the side facing away from the precast waterproof substrate, and the embedded reinforcement is embedded inside the cast-in-place substrate.

6. The waterproof structure for the joint of precast cast-in-place components according to claim 5, characterized in that, Multiple pre-embedded reinforcing bars are evenly spaced along the surface of the waterproof main board.

7. The waterproof structure for the joint of precast cast-in-place components according to claim 1, characterized in that, The prefabricated waterproof substrate includes a prefabricated main board, which is integrally formed with the prefabricated boss.

8. The waterproof structure for the joint of precast cast-in-place components according to claim 7, characterized in that, The prefabricated main board has several fixing through holes, and through-plate anchors are installed in the fixing through holes; one end of the through-plate anchor extends into the interior of the prefabricated substrate, and the end face of the other end of the through-plate anchor is flush with the outer surface of the prefabricated main board.

9. The waterproof structure for the joint of precast cast-in-place components according to claim 8, characterized in that, A flexible sealing layer is laid at the joint between the prefabricated mainboard and the prefabricated substrate.

10. The waterproof structure for the joint of precast cast-in-place components according to claim 7, characterized in that, The prefabricated boss has an external dimension that matches the size of the snap-fit ​​channel. After the prefabricated boss is embedded in the snap-fit ​​channel, the outer wall of the prefabricated boss fits tightly against the inner wall of the snap-fit ​​channel.

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