Flooded structure and method of construction thereof

Abstract

This application relates to a flashing structure, comprising, sequentially arranged from the inside out, a waterproof coating, a waterproof membrane layer, a waterproof reinforcement layer, and a finishing layer. The waterproof reinforcement layer includes an abutment strip for connecting to the parapet wall facade. A sealing strip is provided on one side of the abutment strip, and the sealing strip is elastically designed to abut against the surface edge of the waterproof membrane layer. The abutment strip comprises multiple sequentially spliced ​​prefabricated unit strips, with adjacent prefabricated unit strips hinged to each other. Each prefabricated unit strip is equipped with a locking fastener, which connects it to the parapet wall facade. The flashing structure of this application allows the abutment strip to adapt to curved parapet wall facades. This application also relates to a construction method for the flashing structure.

Description

Technical Field

[0001] This application relates to the technical field of building construction, and in particular to flashing structures and their construction methods. Background Technology

[0002] A parapet wall is a low wall surrounding the roof of a building, mainly serving as a railing to protect people's safety. To ensure that the parapet wall is not washed away by rainwater and to protect the roof's waterproof layer, waterproofing treatment is required at the intersection of the parapet wall and the roof slab, which is called flashing.

[0003] In existing technologies, when waterproofing the intersection of a parapet wall and a roof slab, a waterproof membrane is typically laid on the roof slab, with part of the membrane laid vertically on the parapet wall. A long strip of abutment is installed on the surface of the membrane on the parapet wall, and a sealing strip is installed on the side of the abutment near the parapet wall. The abutment is laid along the edge of the waterproof membrane and fixed to the parapet wall with bolts, forcing the sealing strip to deform and press against the surface of the waterproof membrane. This ensures that the portion of the waterproof membrane on the parapet wall is firmly attached to the parapet wall, improving the waterproofing effect of the membrane.

[0004] However, in reality, the design of parapet walls varies, which means that the parapet wall structure (viewed from above) is no longer a simple horizontal and vertical frame. There may be curved surface structures with different curvatures. When the facade of the parapet wall is curved, the reinforcement effect of such abutment strips on the waterproof membrane is reduced, which in turn affects the waterproof construction and waterproof quality in the flashing structure. Therefore, further improvements are needed. Summary of the Invention

[0005] In order to enable the connecting strip to adapt to the curved parapet wall facade, this application provides a flashing structure and its construction method.

[0006] Firstly, the flashing structure provided in this application adopts the following technical solution:

[0007] The flashing structure includes, from the inside out, a waterproof coating, a waterproof membrane layer, a waterproof reinforcement layer, and a finishing layer. The waterproof reinforcement layer is provided with an abutment strip for connecting to the parapet wall facade. A sealing strip is provided on one side of the abutment strip, and the sealing strip is elastically set to abut against the surface edge of the waterproof membrane layer. The abutment strip includes multiple sequentially spliced ​​prefabricated unit strips, with adjacent prefabricated unit strips hinged to each other. The prefabricated unit strips are provided with locking fasteners, and the prefabricated unit strips are connected to the parapet wall facade through the locking fasteners.

[0008] By adopting the above technical solution, and through the setting of multiple prefabricated unit strips, the adjacent two prefabricated unit strips are hinged to each other, so that the abutment strip formed by the combination of multiple prefabricated unit strips can be in a "flexible" state, forming an arc-shaped abutment strip, thereby enabling the abutment strip to adapt to the installation of the arc-shaped parapet wall facade. At the same time, the hinged connection between two adjacent prefabricated unit strips can make the abutment strip present an arc shape with different curvatures to adapt to parapet wall facades with different curvatures, improving the adaptability of the overall structure. After adjusting the angle of the prefabricated unit strips to make the shape of the abutment strip match the shape of the parapet wall facade, the prefabricated unit strips are connected to the facade of the parapet wall by fasteners, thereby forcing the sealing strip to firmly press against the surface of the waterproof membrane layer, improving the waterproof effect of the waterproof membrane layer.

[0009] Optionally, multiple abutment strips are provided and spaced apart along the height direction of the parapet wall, and a filling cavity is formed between two adjacent abutment strips. When multiple precast unit strips are combined to form an arc-shaped abutment strip, a connecting gap is formed between two adjacent precast unit strips that communicates with the filling cavity. The waterproof reinforcement layer includes waterproof mortar and reinforcement strips. The waterproof mortar fills the filling cavity. Multiple reinforcement strips are provided, and the two ends of all reinforcement strips are respectively connected to two adjacent abutment strips.

[0010] By adopting the above technical solution, after multiple abutment strips are installed sequentially using waterproof mortar and reinforcing strips, the two ends of the multiple reinforcing strips are sequentially installed on two adjacent abutment strips. Then, the finishing layer is installed on the side of the abutment strip away from the waterproof membrane layer, so that two adjacent abutment strips form a filling cavity between the waterproof membrane layer and the finishing layer. Then, waterproof mortar is filled into the filling cavity through the connection gap. After the waterproof mortar solidifies, the waterproof mortar and the reinforcing strips form a waterproof reinforcement layer. The reinforcing strips set in the waterproof mortar greatly improve the structural stability of the waterproof reinforcement layer, thereby increasing the service life of the overall structure.

[0011] Optionally, the prefabricated unit strip has a positioning groove on the side wall away from the sealing strip for embedding the reinforcing strip, and the prefabricated unit strip has a limiting member for limiting the reinforcing strip, and the reinforcing strip is kept embedded in the positioning groove by the limiting member.

[0012] By adopting the above technical solution, the positioning groove of the limiting component plays a positioning role for the installation of the reinforcing strip, so that the reinforcing strip can be installed in the set position. Then, the limiting component limits the reinforcing strip, so that the two ends of the reinforcing strip are respectively limited to the positioning groove of the unit prefabricated strip of the two adjacent abutting strips.

[0013] Optionally, the limiting member includes a clamping ring installed on the side wall of the precast unit strip. The clamping ring is used to fasten to the outer peripheral wall of the reinforcing strip. The clamping ring is elastically configured and has an opening for the reinforcing strip to enter and exit. A guide block is provided on the side wall of the clamping ring at the opening, and the guide block has a guide surface.

[0014] By adopting the above technical solution, and through the setting of the clamping ring, when the reinforcing strip is installed, the two ends of the reinforcing strip are respectively embedded in the positioning grooves of two adjacent abutment strips. Then, the reinforcing strip is pushed, forcing the peripheral wall of the reinforcing strip to abut against the guide block located at the opening of the clamping ring. The reinforcing strip can force the clamping ring to deform through the guide surface of the guide block, thereby expanding the opening of the clamping ring, so that the reinforcing strip can be fastened in the clamping ring, forming a limiting effect on the reinforcing strip.

[0015] Optionally, there is a gap between the inner peripheral wall of the clamping ring and the outer peripheral wall of the reinforcing strip so that the reinforcing strip can rotate freely around its own axis. The outer peripheral wall of the reinforcing strip is provided with a plurality of stirring strips located in the filling cavity. The upper end face of the reinforcing strip is provided with a rotating groove for driving the reinforcing strip to rotate.

[0016] By adopting the above technical solution, the reinforcing strip can rotate around its own axis after being fastened to the clamping ring. When the filling cavity is filled with waterproof mortar, a tool can be used to connect to the rotating groove of the reinforcing strip to force the reinforcing strip to rotate, thereby driving the stirring strip to stir the waterproof mortar entering the filling cavity, improving the filling uniformity of the waterproof mortar, and thus improving the overall molding quality of the waterproof reinforcing layer.

[0017] Optionally, the decorative layer is provided with a positioning strip on the side wall near the waterproof reinforcement layer. The positioning strip is used to fasten to the positioning groove of the unit prefabricated strip, and the decorative layer is installed on the abutment strip through the positioning strip.

[0018] By adopting the above technical solution, and through the setting of the positioning strip, when the decorative layer is installed, the decorative layer is bent into a shape that matches the abutment strip, and then the positioning strip is fastened to the positioning groove of the unit prefabricated strip, so that the decorative layer is installed on the abutment strip, improving the ease of installation of the decorative layer; on the other hand, after the decorative layer is fastened to the positioning groove by the positioning strip, the positioning strip seals the opening of the positioning groove, thereby reducing the possibility of the reinforcing strip falling out of the positioning groove, and thus improving the stability of the overall structure.

[0019] Optionally, the finishing layer has multiple mounting grooves on its side wall near the waterproof reinforcement layer, and all mounting grooves are spaced apart along the extension direction of the abutment strip; the positioning strip includes a first positioning part and a second positioning part, the first positioning part is used to engage with the positioning groove of the unit prefabricated strip, and the second positioning part is used to engage with the mounting groove of the finishing layer.

[0020] By adopting the above technical solution, and through the setting of the mounting groove, during the installation of the finishing layer, the second positioning part of the positioning strip can be fastened to different mounting grooves to adjust the position of the positioning strip, so that the first positioning part of the positioning strip can be opposite to the positioning groove and can be embedded in the corresponding positioning groove; on the other hand, multiple mounting grooves are spaced apart along the length direction of the abutment strip to improve the surface roughness of the finishing layer, thereby improving the connection stability between the waterproof reinforcement layer and the finishing layer after the waterproof mortar fills the filling cavity and solidifies.

[0021] Optionally, each of the two sides of the precast unit strip is provided with a connecting ear, the connecting ear having a connecting channel, and a connecting rod is provided between two adjacent precast unit strips. The connecting rod passes through the connecting channel of the connecting ear of the two adjacent precast unit strips, the two adjacent precast unit strips are hinged to each other by the connecting rod, and the connecting rod is connected in series with two adjacent abutment strips.

[0022] By adopting the above technical solution, the connecting ears and connecting rods enable two adjacent prefabricated unit strips to be hinged to each other. At the same time, two adjacent abutment strips are connected in series by connecting rods, so that when the curvature of the abutment strip is adjusted, the two adjacent abutment strips can be adjusted synchronously, improving the operational convenience of the overall structure.

[0023] Optionally, the top wall of the precast unit gradually decreases in height from the side furthest from the finishing layer to the side closer to the finishing layer.

[0024] By adopting the above technical solution, the height of the top wall of the precast unit strip is gradually reduced from the side away from the finishing layer to the side closer to the finishing layer. When rainwater falls into the top wall of the precast unit strip, the rainwater can fall outward along the top wall of the precast unit strip, reducing the possibility of rainwater stagnating on the top wall of the precast unit strip, thereby improving the waterproof effect of the overall structure.

[0025] Secondly, the construction method for the flashing structure provided in this application adopts the following technical solution:

[0026] The construction method for flashing structures specifically includes the following steps: S1. Installation of waterproof coating: Apply the waterproof coating to the intersection of the parapet wall and the roof slab; S2. Installation of waterproof membrane layer: Lay the waterproof membrane layer on the outer surface of the waterproof coating; S3. Installation of retaining strip: According to the shape of the parapet wall facade, install the retaining strip on the surface of the waterproof membrane layer and connect it to the facade of the parapet wall using fasteners; S4. Installation of reinforcing strip: Connect the two ends of the reinforcing strip to two adjacent retaining strips respectively; S5. Installation of finishing layer: Install the finishing layer on the side of the retaining strip away from the waterproof membrane layer; S6. Filling of waterproof mortar: Fill the filling cavity with waterproof mortar.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By using multiple prefabricated unit strips, adjacent prefabricated unit strips are hinged to each other, allowing the abutment strip formed by the combination of multiple prefabricated unit strips to be in a "flexible" state, forming an arc-shaped abutment strip. This allows the abutment strip to adapt to the installation of the arc-shaped parapet wall facade. At the same time, the hinged relationship between adjacent prefabricated unit strips allows the abutment strip to present an arc shape with different curvatures to adapt to parapet wall facades with different curvatures, improving the adaptability of the overall structure. After adjusting the angle of the prefabricated unit strips to match the shape of the abutment strip with the shape of the parapet wall facade, the prefabricated unit strips are connected to the facade of the parapet wall by fasteners, thereby forcing the sealing strip to firmly press against the surface of the waterproof membrane layer, improving the waterproof effect of the waterproof membrane layer.

[0029] 2. By setting up waterproof mortar and reinforcing strips, after multiple abutment strips are installed in sequence, the two ends of multiple reinforcing strips are installed on two adjacent abutment strips in sequence. Then, the finishing layer is installed on the side of the abutment strip away from the waterproof membrane layer, so that two adjacent abutment strips form a filling cavity between the waterproof membrane layer and the finishing layer. Then, waterproof mortar is filled into the filling cavity through the connection gap. After the waterproof mortar solidifies, the waterproof mortar and the reinforcing strips form a waterproof reinforcement layer. The reinforcing strips set in the waterproof mortar greatly improve the structural stability of the waterproof reinforcement layer, thereby improving the service life of the overall structure.

[0030] 3. By setting up positioning strips, during the installation of the finishing layer, the finishing layer is bent into a shape that matches the abutment strip, and then the positioning strip is fastened to the positioning groove of the unit prefabricated strip, so that the finishing layer is installed on the abutment strip, improving the ease of installation of the finishing layer; on the other hand, after the finishing layer is fastened to the positioning groove by the positioning strip, the positioning strip seals the opening of the positioning groove, thereby reducing the possibility of the reinforcing strip coming out of the positioning groove, and thus improving the stability of the overall structure. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0032] Figure 2 This is a schematic diagram illustrating the structure of the abutment strip and the finishing layer in Example 1;

[0033] Figure 3 This is a schematic diagram illustrating the structure of the reinforcing strip in Example 1;

[0034] Figure 4 This is a schematic diagram illustrating the structure of the precast unit strip in Example 1;

[0035] Figure 5 This is a schematic diagram illustrating the structure of the connecting rod in Example 1;

[0036] Figure 6 This is a schematic diagram illustrating the structure of the positioning strip in Example 1;

[0037] Figure 7 This is a schematic diagram illustrating the structure of the stirring bar in Example 1;

[0038] Figure 8 This is a partial cross-sectional view of Embodiment 1, showing the first and second positioning parts.

[0039] Explanation of reference numerals in the attached drawings: 1. Waterproof coating; 2. Waterproof membrane layer; 3. Waterproof reinforcement layer; 31. Waterproof mortar; 32. Reinforcing strip; 321. Agitating strip; 322. Rotating groove; 4. Finishing layer; 41. Installation groove; 5. Abutment strip; 51. Sealing strip; 52. Unit prefabricated strip; 521. Positioning groove; 522. Connecting ear; 523. Connecting channel; 524. Weight reduction groove; 53. Filling cavity; 54. Connecting gap; 55. Clamping ring; 551. Opening; 552. Guide block; 553. Guide surface; 56. Connecting rod; 561. Limiting ring; 6. Positioning strip; 61. First positioning part; 62. Second positioning part; 63. Limiting hole; 7. Floor slab; 8. Parapet wall. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail. Example 1

[0041] This application discloses a flooding structure.

[0042] Reference Figure 1 , Figure 2 The flashing structure includes a waterproof coating 1, a waterproof membrane layer 2, a waterproof reinforcement layer 3, and a finishing layer 4. In this embodiment, the waterproof coating 1 is applied to the surface of the roof slab 7 and extends partially to the facade of the parapet wall 8. The waterproof membrane layer 2 is applied above the roof slab 7 and extends partially to the facade of the parapet wall 8. The waterproof membrane layer 2 covers the outer surface of the waterproof coating 1. The waterproof coating 1, the waterproof membrane layer 2, the waterproof reinforcement layer 3, and the finishing layer 4 are sequentially arranged from the inside out.

[0043] Reference Figure 1 , Figure 2 In this embodiment, the waterproof coating 1 is a polyurethane waterproof coating layer; the waterproof membrane layer 2 is a PVC waterproof membrane; and the finishing layer 4 is a polyethylene plastic sheet. It should be noted that when the waterproof membrane layer 2 covers the outer surface of the waterproof coating 1, an adhesive needs to be applied to the outer surface of the waterproof coating 1 so that the waterproof membrane layer 2 is bonded and fixed to the outer surface of the waterproof coating 1.

[0044] Reference Figure 1 , Figure 3 An abutment strip 5 is installed inside the waterproof reinforcement layer 3. The abutment strip 5 is located between the waterproof membrane layer 2 and the finishing layer 4. There are multiple abutment strips 5. In this application, the number of abutment strips 5 is set to two. The two abutment strips 5 are spaced apart along the height direction of the parapet wall 8. It should be noted that both abutment strips 5 are used to abut against the surface of the waterproof membrane layer 2 located on the parapet wall 8, so as to force the waterproof membrane layer 2 to press tightly against the surface of the waterproof coating 1 located on the parapet wall 8, thereby improving the waterproof effect of the waterproof membrane layer 2. The abutment strip 5 located on the lower side also abuts against the surface of the waterproof membrane layer 2 located on the roof slab 7, so as to force the waterproof membrane layer 2 to press tightly against the surface of the waterproof coating 1 located on the roof slab 7.

[0045] Reference Figure 1 , Figure 3 Each abutment strip 5 is fixedly installed with a sealing strip 51 near the side wall of the waterproof membrane layer 2. The sealing strip 51 is a rubber strip used to abut against the surface edge of the waterproof membrane layer 2. The sealing strip 51 is installed on the side wall of the abutment strip 5 near the waterproof membrane layer 2 by adhesive fixation.

[0046] Reference Figure 3 , Figure 4 , Figure 5 The abutment strip 5 includes multiple prefabricated unit strips 52, which are sequentially spliced ​​together to form the abutment strip 5. Each prefabricated unit strip 52 has a connecting ear 522 fixedly installed on both sides. The connecting ear 522 has a connecting channel 523. In this embodiment, the connecting ear 522 is a long strip of steel sheet bent to form the connecting channel 523. The connecting ears 522 of two adjacent prefabricated unit strips 52 are staggered along the height direction, and the connecting channels 523 of the connecting ears 522 of the two adjacent prefabricated unit strips 52 are interconnected. A connecting rod 56 is installed between two adjacent prefabricated unit strips 52. The connecting rod 56 is vertically arranged and passes through the connecting channels 523 of the connecting ears 522 of the two adjacent prefabricated unit strips 52, so that the two adjacent prefabricated unit strips 52 are hinged to each other through the connecting rod 56.

[0047] Reference Figure 3 , Figure 5It should be noted that in this embodiment, the connecting rod 56 is connected in series with two abutment bars 5. That is, the lower end of the connecting rod 56 passes through the connecting channel 523 of the connecting ear 522 of two adjacent unit prefabricated bars 52 (this unit prefabricated bar 52 is the unit prefabricated bar 52 of the upper abutment bar 5), continues to extend downward, and then passes through the connecting channel 523 of the connecting ear 522 of two adjacent unit prefabricated bars 52 (this unit prefabricated bar 52 is the unit prefabricated bar 52 of the lower abutment bar 5), so that the connecting rod 56 can be connected in series with two abutment bars 5. A limiting ring 561 is fixedly installed on the outer peripheral wall of the connecting rod 56. The upper surface of the limiting ring 561 is used to abut against the upper abutment bar 5, so that a certain distance is maintained between the two abutment bars 5.

[0048] Reference Figure 1 , Figure 3 The precast unit strip 52 is equipped with locking fasteners, which connect it to the facade of the parapet wall 8. In this embodiment, the locking fasteners are set as locking bolts (not shown in the figure). The locking bolts are sequentially inserted through the precast unit strip 52, the sealing strip 51, the waterproof membrane layer 2, and the waterproof coating 1, and then threaded to the facade of the parapet wall 8 so that the abutment strip 5 can press the sealing strip 51 against the surface of the waterproof membrane layer 2, thereby improving the waterproof effect of the waterproof membrane layer 2. When installing the locking bolts, they can be installed at intervals (i.e., one locking bolt is installed for every few adjacent precast unit strips 52) to improve the installation efficiency of the abutment strip 5.

[0049] Reference Figure 3 , Figure 6 In this embodiment, the length of each prefabricated strip 52 can be set to be different. When the facade of the parapet wall 8 is flat, a longer prefabricated strip 52 is selected for installation. When the facade of the parapet wall 8 is curved, multiple shorter prefabricated strips 52 are selected for installation. After multiple shorter prefabricated strips 52 are assembled together, a "flexible" abutment strip 5 is formed, so that the abutment strip 5 can adapt to the scenario where the facade of the parapet wall 8 is curved, thereby improving the adaptability of the overall structure.

[0050] Reference Figure 1 , Figure 4 The precast unit 52 has a weight-reducing groove 524 on its side wall away from the sealing strip 51. The two ends of the weight-reducing groove 524 pass through the two opposite side walls of the precast unit 52, so that the precast unit 52 forms a channel steel structure and improves the structural stability of the precast unit 52. In this embodiment, the height of the top wall of the precast unit 52 gradually decreases from the side away from the finishing layer 4 to the side closer to the finishing layer 4.

[0051] Reference Figure 1 , Figure 3 , Figure 6A filling cavity 53 is formed between the waterproof membrane layer 2, the finishing layer 4, and the two abutment strips 5. When multiple precast unit strips 52 are combined to form an arc-shaped abutment strip 5, a connecting gap 54 is formed between two adjacent precast unit strips 52, which are connected to the filling cavity 53. The waterproof reinforcing layer 3 is installed in the filling cavity 53. In this embodiment, the waterproof reinforcing layer 3 includes waterproof mortar 31 and reinforcing strips 32. The waterproof mortar 31 is filled in the filling cavity 53. It should be noted that when the waterproof mortar 31 is filled, it is filled by the connecting gap 54, so that the waterproof mortar 31 flows into the filling cavity 53 through the connecting gap 54. When the parapet wall 8 is a plane, since the precast unit strips 52 in this part do not have a connecting gap 54, the top wall of the precast unit strips 52 in this part needs to be additionally opened with a filling hole (not shown in the figure) connected to the filling cavity 53, so that the waterproof mortar 31 can flow into the filling cavity 53 through the filling hole.

[0052] Reference Figure 3 , Figure 6 The reinforcing strip 32 is configured as a round rod, and there are multiple reinforcing strips 32. The two ends of the reinforcing strip 32 are respectively connected to two abutment strips 5 to be connected in series with the two abutment strips 5. Specifically, each abutment strip 5 has a positioning groove 521 on the side wall away from the sealing strip 51. The positioning grooves 521 of the two unit prefabricated strips 52 opposite to each other of the two abutment strips 5 are aligned with each other, and the two ends of the reinforcing strip 32 are respectively embedded in the positioning grooves 521 of the two opposite unit prefabricated strips 52. It should be noted that for the shorter unit prefabricated strip 52, the number of positioning grooves 521 for the reinforcing strip 32 to be embedded is set to one. For the longer unit prefabricated strip 52, the number of positioning grooves 521 for the reinforcing strip 32 to be embedded can be multiple. The multiple positioning grooves 521 are spaced apart along the length direction of the unit prefabricated strip 52 to be used for the installation of multiple reinforcing strips 32.

[0053] Reference Figure 5 , Figure 7The precast unit 52 is equipped with a limiting member to limit the reinforcing strip 32, which holds the reinforcing strip 32 embedded in the positioning groove 521. The limiting member is a clamping ring 55, the outer peripheral wall of which is fixedly installed on the bottom wall of the weight reduction groove 524 of the precast unit 52. The clamping ring 55 is used to fasten to the outer peripheral wall of the reinforcing strip 32. The clamping ring 55 is elastically set and has an opening 551 for the reinforcing strip 32 to enter and exit. The opening 551 of the clamping ring 55 faces the same direction as the groove opening of the positioning groove 521. In this embodiment, a guide block 552 is fixedly installed on the side wall of the clamping ring 55 at the opening 551. The guide block 552 has a guide surface 553, which is used to force the clamping ring 55 to deform, so that the opening 551 of the clamping ring 55 is enlarged, so that the reinforcing strip 32 can enter and be fastened in the clamping ring 55. After the reinforcing strip 32 is embedded in the positioning groove 521 and fastened by the clamping ring 55, waterproof mortar 31 is injected into the filling cavity 53. After the waterproof mortar 31 solidifies, a waterproof reinforcing layer 3 is formed.

[0054] Reference Figure 6 , Figure 7 In this embodiment, the inner diameter of the clamping ring 55 is larger than the outer diameter of the reinforcing strip 32, so that when the reinforcing strip 32 is fastened in the clamping ring 55, there is a gap between the outer peripheral wall of the reinforcing strip 32 and the inner peripheral wall of the clamping ring 55, allowing the reinforcing strip 32 to rotate freely within the clamping ring 55; a rotating groove 322 is provided on the upper end face of the reinforcing strip 32, and the cross-sectional shape of the rotating groove 322 is hexagonal, for connecting tools such as wrenches to drive the reinforcing strip 32 to rotate; multiple agitating strips 321 are fixedly installed on the outer peripheral wall of the reinforcing strip 32, all agitating strips 321 are located in the filling cavity 53 and all agitating strips 321 are arranged at intervals around the axial direction of the reinforcing strip 32; it should be noted that the agitating strips 321 between two adjacent reinforcing strips 32 are staggered along the axial direction of the reinforcing strip 32.

[0055] Reference Figure 2 , Figure 6 , Figure 7 The finishing layer 4 has an installation groove 41 on its side wall near the waterproof reinforcement layer 3. The two ends of the installation groove 41 extend along the height direction and pass through the two opposite side walls of the finishing layer 4. There are multiple installation grooves 41, which are spaced apart along the length of the finishing layer 4. In this embodiment, the installation groove 41 is a dovetail groove, and the opening of the positioning groove 521 is set in a tapered shape to form a dovetail. Multiple positioning strips 6 are installed on the side wall of the finishing layer 4 near the waterproof reinforcement layer 3. The positioning strips 6 are used to fasten to the positioning grooves 521 of the unit prefabricated strip 52. The finishing layer 4 is installed on the abutment strip 5 through the positioning strips 6.

[0056] Reference Figure 7 , Figure 8The positioning strip 6 includes a first positioning part 61 and a second positioning part 62. The shape of the first positioning part 61 is adapted to the shape of the precast unit strip 52, and the first positioning part 61 is used to engage with the positioning groove 521 of the precast unit strip 52. The shape of the second positioning part 62 is adapted to the shape of the mounting groove 41, and the second positioning part 62 is used to engage with the mounting groove 41 of the finishing layer 4. During the actual installation of the finishing layer 4, the second positioning parts 62 of the multiple positioning strips 6 are slidably inserted into the mounting groove 41 along one end of the groove, so that the positioning strips 6 pass through the first positioning part 61. The two positioning parts 62 are fastened to the decorative layer 4, and the decorative layer 4 and the positioning strip 6 are fastened to each other to form a whole. Then, the first positioning part 61 of the positioning strip 6 slides down from top to bottom and is inserted into the positioning groove 521 of the unit prefabricated strip 52, so that the positioning strip 6 is fastened to the positioning groove 521 through the first positioning part 61, thereby connecting the decorative layer 4 to the abutment strip 5. Since the abutment strip 5 has a certain arc shape, after the decorative layer 4 is connected to the abutment strip 5 through multiple positioning strips 6, the decorative layer 4 made of polyethylene plastic sheet can be bent to fit the shape of the abutment strip 5.

[0057] Reference Figure 8 In this embodiment, the side wall of the first positioning part 61 away from the second positioning part 62 has an embedded arc surface. The embedded arc surface is used to abut against the outer peripheral wall of the reinforcing strip 32. When the first positioning part 61 is fastened in the positioning groove 521, the embedded arc surface and the inner wall of the positioning groove 521 combine to form a circular limiting hole 63. The limiting hole 63 is used to further limit the reinforcing strip 32 and improve the connection stability of the two ends of the reinforcing strip 32.

[0058] The implementation principle of Embodiment 1 of this application is as follows: The abutment strip 5 is formed by splicing together multiple prefabricated unit strips 52. When the facade of the parapet wall 8 is curved, the abutment strip 5 formed by splicing together multiple prefabricated unit strips 52 can rotate relative to each other, so that the abutment strip 5 presents an arc shape as a whole, so that the abutment strip 5 can adapt to the shape of the facade of the parapet wall 8, thereby enabling the abutment strip 5 to remain in contact with the facade of the parapet wall 8, improving the abutment strip 5's reinforcement effect on the waterproof membrane layer 2, thereby improving the waterproof effect of the waterproof membrane. At the same time, the abutment strip 5 can adapt to the installation of the parapet wall 8 with different curvatures, improving the adaptability of the overall structure.

[0059] A waterproof reinforcing layer 3 is provided on the outer surface of the waterproof membrane layer 2 to further improve the waterproof effect of the overall structure. After the waterproof mortar 31 is filled into the filling cavity 53 and solidifies, the waterproof mortar 31 and the reinforcing strip 32 form an integral whole, which greatly improves the structural stability of the waterproof reinforcing layer 3 and thus improves the service life of the overall structure.

[0060] During the pouring of waterproof mortar 31, a tool is used to drive the reinforcing strip 32 to rotate back and forth, so that the stirring strip 321 can swing back and forth to stir the waterproof mortar 31 in the filling cavity 53, improve the uniformity of the filling of waterproof mortar 31, and thus improve the forming quality of waterproof reinforcing layer 3. Example 2

[0061] This application also discloses a construction method for a flashing structure.

[0062] The construction method for flashing structures specifically includes the following steps:

[0063] S1. Installation of waterproof coating 1: a. Clean the area where the parapet wall 8 intersects with the roof slab 7, removing dust, household waste, or other foreign objects to keep the area clean; b. Apply waterproof coating 1 evenly to the area where the parapet wall 8 intersects with the roof slab 7 and let it stand for at least 36 hours. During this period, the waterproof coating 1 should be covered to prevent foreign objects from falling onto it.

[0064] S2. Installation of waterproof membrane layer 2: After the waterproof coating 1 has cured, apply adhesive evenly to the outer surface of the waterproof coating 1, and then lay the waterproof membrane layer 2 on the outer surface of the waterproof coating 1. During the laying of the waterproof membrane, wrinkles, bulges and other phenomena should be avoided.

[0065] S3. Installation of the abutment strip 5: According to the shape of the parapet wall 8 facade, multiple abutment strips 5 are installed sequentially on the outer surface of the waterproof membrane layer 2. The length direction of the abutment strip 5 extends along the surface edge of the waterproof membrane layer 2. The unit prefabricated strip 52 is fixedly installed on the facade of the parapet wall 8 by locking bolts. Tightening the locking bolts forces the sealing strip 51 to deform and press against the surface of the waterproof membrane layer 2.

[0066] S4. Installation of reinforcing strip 32: Align reinforcing strip 32 with the positioning groove 521 of unit prefabricated strip 52 and push it, forcing reinforcing strip 32 into positioning groove 521 and fastening it in clamping ring 55, so that the two ends of reinforcing strip 32 are respectively connected to two abutment strips 5.

[0067] S5. Installation of finishing layer 4: Finishing layer 4 is fastened to positioning groove 521 by the first positioning part 61 of positioning strip 6, thereby fastening finishing layer 4 to the side of abutment strip 5 away from waterproof membrane. After finishing layer 4 is installed, filling cavity 53 is formed between finishing layer 4, waterproof membrane layer 2 and two abutment strips 5.

[0068] S6. Filling of waterproof mortar 31: Fill the filling cavity 53 with waterproof mortar 31. After the waterproof mortar 31 solidifies, a waterproof reinforcing layer 3 is formed between the waterproof mortar 31 and the reinforcing strip 32.

[0069] The implementation principle of Embodiment 2 of this application is as follows: waterproof mortar 31 is filled into the filling cavity 53. After the waterproof mortar 31 solidifies, a waterproof reinforcing layer 3 is formed. The waterproof reinforcing layer 3 connects the finishing layer 4 and the abutment strip 5 into a whole, thereby improving the stability of the overall structure. On the other hand, after the waterproof mortar 31 is filled into the filling cavity 53, part of the waterproof mortar 31 flows into the installation groove 41 (installation groove 41 without the positioning strip 6 installed). The installation groove 41 is dovetail shaped. After this part of the waterproof mortar 31 solidifies, the connection stability between the finishing layer 4 and the waterproof reinforcing layer 3 is further improved.

[0070] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flashing structure, characterized in that: The structure includes, sequentially arranged from the inside out, a waterproof coating (1), a waterproof membrane layer (2), a waterproof reinforcing layer (3), and a finishing layer (4). The waterproof reinforcing layer (3) is provided with an abutment strip (5) for connecting to the parapet wall (8) facade. A sealing strip (51) is provided on one side of the abutment strip (5), and the sealing strip (51) is elastically arranged to abut against the surface edge of the waterproof membrane layer (2). The abutment strip (5) includes multiple sequentially spliced ​​prefabricated unit strips (52), with adjacent prefabricated unit strips (52) hinged to each other. Each prefabricated unit strip (52) is provided with a locking fastener, and the prefabricated unit strip (52) is connected to the parapet wall (8) by the locking fastener. The facade of the parapet wall (8); multiple abutment strips (5) are provided and spaced apart along the height direction of the parapet wall (8), and a filling cavity (53) is formed between two adjacent abutment strips (5). When multiple precast unit strips (52) are combined to form an arc-shaped abutment strip (5), a connecting gap (54) is formed between two adjacent precast unit strips (52) that connects to the filling cavity (53); the waterproof reinforcement layer (3) includes waterproof mortar (31) and reinforcement strips (32). The waterproof mortar (31) is filled in the filling cavity (53). Multiple reinforcement strips (32) are provided, and the two ends of all reinforcement strips (32) are respectively connected to two adjacent abutment strips (5).

2. The flooding structure according to claim 1, characterized in that: The prefabricated unit strip (52) has a positioning groove (521) on its side wall away from the sealing strip (51) for the reinforcing strip (32) to be embedded. The prefabricated unit strip (52) has a limiting member for limiting the reinforcing strip (32). The reinforcing strip (32) is kept embedded in the positioning groove (521) by the limiting member.

3. The flooding structure according to claim 2, characterized in that: The limiting member includes a clamping ring (55) installed on the side wall of the precast unit strip (52). The clamping ring (55) is used to fasten to the outer peripheral wall of the reinforcing strip (32). The clamping ring (55) is elastically arranged. The clamping ring (55) has an opening (551) for the reinforcing strip (32) to enter and exit. The side wall of the clamping ring (55) located at the opening (551) is provided with a guide block (552). The guide block (552) has a guide surface (553).

4. The flooding structure according to claim 3, characterized in that: There is a gap between the inner peripheral wall of the clamping ring (55) and the outer peripheral wall of the reinforcing strip (32) so that the reinforcing strip (32) can rotate freely around its own axis. The outer peripheral wall of the reinforcing strip (32) is provided with a plurality of stirring strips (321) located in the filling cavity (53). The upper end face of the reinforcing strip (32) is provided with a rotating groove (322) for driving the reinforcing strip (32) to rotate.

5. The flooding structure according to claim 2, characterized in that: The decorative layer (4) has a positioning strip (6) on its side wall near the waterproof reinforcement layer (3). The positioning strip (6) is used to fasten to the positioning groove (521) of the precast unit strip (52). The decorative layer (4) is installed on the abutment strip (5) through the positioning strip (6).

6. The flooding structure according to claim 5, characterized in that: The finishing layer (4) has multiple mounting grooves (41) on its side wall near the waterproof reinforcement layer (3), and all mounting grooves (41) are spaced apart along the extension direction of the abutment strip (5); the positioning strip (6) includes a first positioning part (61) and a second positioning part (62), the first positioning part (61) is used to fasten to the positioning groove (521) of the unit prefabricated strip (52), and the second positioning part (62) is used to fasten to the mounting groove (41) of the finishing layer (4).

7. The flooding structure according to claim 1, characterized in that: Connecting ears (522) are provided on both sides of the precast unit strip (52). The connecting ears (522) have connecting channels (523). A connecting rod (56) is provided between two adjacent precast unit strips (52). The connecting rod (56) passes through the connecting channels (523) of the connecting ears (522) of two adjacent precast unit strips (52). The two adjacent precast unit strips (52) are hinged to each other through the connecting rod (56), and the connecting rod (56) is connected in series with two adjacent abutting strips (5).

8. The flooding structure according to claim 1, characterized in that: The top wall of the precast unit strip (52) gradually decreases in height from the side away from the finishing layer (4) to the side closer to the finishing layer (4).

9. A construction method for a flashing structure, based on the flashing structure according to any one of claims 1-8, comprising the following steps: S1. Installation of waterproof coating (1): The waterproof coating (1) is applied at the intersection of the parapet wall (8) and the roof slab (7); S2. Installation of waterproof membrane layer (2): Lay the waterproof membrane layer (2) on the outer surface of the waterproof coating (1); S3. Installation of the abutment strip (5): According to the shape of the parapet wall (8) facade, install the abutment strip (5) on the surface of the waterproof membrane layer (2) and connect it to the facade of the parapet wall (8) through fasteners; S4. Installation of the reinforcing strip (32): Connect the two ends of the reinforcing strip (32) to the two adjacent abutment strips (5); S5. Installation of finishing layer (4): Install finishing layer (4) on the side of the abutment strip (5) away from the waterproof membrane layer (2); S6. Filling of waterproof mortar (31): Fill the filling cavity (53) with waterproof mortar (31).

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