Underground engineering pre-paving anti-sticking waterproof structure
By using magnetic adsorption and fastener design, the problem of water seepage caused by the penetration of fasteners in pre-laid reverse adhesive waterproof structure is solved, achieving better waterproof effect, especially improving the waterproof performance at the corners.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG GUOFENG GRP
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-12
AI Technical Summary
The existing pre-laid reverse-adhesive waterproof structure has a risk of water seepage because the fasteners penetrate the waterproof membrane during construction, making it easy for external groundwater to seep in.
The edges of the waterproof membrane are adhered by magnets, and the first and second fixing parts work together to prevent the edges of the membrane from lifting. The corners are rounded by chamfering parts to reduce stress concentration and improve the waterproofing effect.
It effectively prevents groundwater from seeping through the gaps in the fasteners, ensures that the edges of the waterproof membrane are tightly fitted, and improves the overall waterproof performance of the waterproof structure, especially at the corners.
Smart Images
Figure CN224227862U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waterproof structure technology, and in particular to a pre-laid reverse-adhesive waterproof structure for underground engineering. Background Technology
[0002] Pre-laid reverse-adhesive waterproofing structures are used for waterproofing projects of underground structures to prevent external groundwater from seeping into the main structure. Existing pre-laid reverse-adhesive waterproofing structures, as shown in the patent application number CN201320005710.4, include a concrete base layer, a waterproof membrane, a concrete main layer, and fasteners. During construction, the waterproof membrane is laid on the concrete base layer, and the fasteners penetrate the waterproof membrane to fix it to the concrete base layer. Then, the concrete main layer is poured on the waterproof membrane.
[0003] During the construction of the above-mentioned pre-laid reverse-adhesive waterproof structure, fasteners are used to fix the waterproof membrane through the membrane. The fasteners leave perforations in the waterproof membrane, which allow groundwater to easily seep into the concrete main layer. Utility Model Content
[0004] In order to solve the problem that existing pre-laid reverse-adhesive waterproof structures are prone to water seepage, this utility model proposes a waterproof structure that is not easily seeped into the water.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An underground engineering pre-laid reverse-adhesive waterproof structure includes a base layer, a main layer, a reverse-adhesive waterproof membrane, a first fastener and a second fastener. The first fastener is driven into the base layer, and a first groove is provided at the end of the first fastener. A magnet is provided in the first groove.
[0007] The reverse-adhesive waterproof membrane is made of multiple pieces and laid on the base layer. The edges of two adjacent reverse-adhesive waterproof membranes overlap each other. The edge of one reverse-adhesive waterproof membrane covers the first fastener and is fixed to the base layer by the second fastener. The edge of the other reverse-adhesive waterproof membrane covers the second fastener and is provided with an iron sheet. The iron sheet is attracted by a magnet to prevent the edge of the reverse-adhesive waterproof membrane from curling up.
[0008] The main layer is poured on the side of the reverse-adhesive waterproof membrane away from the substrate.
[0009] With the above setup, the edge of the reverse-adhesive waterproof membrane is covered by the second fastener to prevent external groundwater from seeping into the main layer through the gap at the second fastener; a magnet is provided at the end of the first fastener to attract the edge of the reverse-adhesive waterproof membrane, preventing the edge of the reverse-adhesive waterproof membrane from curling up and facilitating the pouring of the main layer.
[0010] Furthermore, the distance from the axis of the second fastener to the end of the corresponding reverse-adhesive waterproof membrane is L1, 10mm. <L<20mm。
[0011] With the above arrangement, there is a sufficient distance between the second fastener and the end of the reverse-adhesive waterproof membrane, so that there is sufficient strength between the second fastener and the end of the reverse-adhesive waterproof membrane.
[0012] Furthermore, the distance from the axis of the first fastener to the axis of the second fastener is L, which is 20mm. <L2<30mm。
[0013] The above settings ensure sufficient overlap between adjacent pieces of anti-seepage waterproof membrane, thus improving the seepage prevention effect.
[0014] Furthermore, the distance from the iron sheet to the end of the corresponding reverse-adhesive waterproof membrane is L3.3mm. <L3<5mm。
[0015] With the above setup, the iron sheet is closer to the end of the reverse-adhesive waterproof membrane, and when the iron sheet is adsorbed, the end of the reverse-adhesive waterproof membrane is less likely to curl up.
[0016] Furthermore, the base layer includes a horizontal part and a vertical part set on one side of the horizontal part. The waterproof structure also includes a chamfered part and a third fastener. The chamfered part is fixed between the horizontal part and the vertical part by the third fastener. The side of the chamfered part away from the base layer is provided with an arc surface. The lower end of the arc surface extends to the surface of the horizontal part and is tangent to it. The upper end of the arc surface extends to the surface of the vertical part and is tangent to it. The reverse-adhesive waterproof membrane is laid from the horizontal part to the vertical part through the arc surface.
[0017] The above settings facilitate the laying of reverse-adhesive waterproof membrane at wall corners. The rounded transition of the reverse-adhesive waterproof membrane reduces stress concentration and protects the membrane.
[0018] Furthermore, a chamfered surface is provided on the side of the chamfered part away from the arc surface, and a clearance space with a triangular cross-section is formed between the horizontal part, the vertical part and the chamfered surface.
[0019] The above settings allow the chamfered parts to be attached to both the vertical and horizontal sections.
[0020] Furthermore, the chamfered part is provided with a through mounting hole, the two ends of which extend to the chamfered surface and the arc surface respectively. A second groove is provided at the end of the mounting hole near the arc surface. The third fastener is a rivet, which passes through the mounting hole and is riveted into the base layer. The end of the rivet is embedded in the second groove. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the waterproof structure in an embodiment.
[0022] Figure 2 for Figure 1 Enlarged view of point B.
[0023] Figure 3 for Figure 1Enlarged view of point A. Detailed Implementation
[0024] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0025] like Figures 1 to 3 An underground engineering pre-laid reverse-adhesive waterproof structure includes a base layer 3, a main layer 4, a reverse-adhesive waterproof membrane 5, a first fastener 6 and a second fastener 7. The first fastener 6 is driven into the base layer 3, and a first groove 8 is provided at the end of the first fastener 6. A magnet 9 is provided in the first groove 8.
[0026] Multiple pieces of reverse-adhesive waterproof membrane 5 are provided and laid on the base layer 3. The edges of two adjacent pieces of reverse-adhesive waterproof membrane 5 overlap each other. The edge of one piece of reverse-adhesive waterproof membrane 5 covers the first fixing member 6 and is fixed to the base layer 3 by the second fixing member 7. The edge of the other piece of reverse-adhesive waterproof membrane 5 covers the second fixing member 7 and is provided with an iron sheet. The magnet 9 attracts the iron sheet to prevent the edge of the reverse-adhesive waterproof membrane 5 from curling up.
[0027] The main layer 4 is poured on the side of the reverse-adhesive waterproof membrane 5 away from the base layer 3.
[0028] With the above settings, the edge of the reverse-adhesive waterproof membrane 5 covers the second fixing member 7 to prevent external groundwater from seeping into the main layer 4 through the gap at the second fixing member 7; a magnet 9 is provided at the end of the first fixing member 6 to attract the edge of the reverse-adhesive waterproof membrane 5, preventing the edge of the reverse-adhesive waterproof membrane 5 from curling up, and facilitating the pouring of the main layer 4.
[0029] The base layer 3 in this application specifically refers to the base layer 3 of the underground structure, which is made of poured concrete; the reverse-adhesive waterproof membrane 5 is purchased from the market and is rectangular in shape; when constructing two adjacent pieces of reverse-adhesive waterproof membrane 5, the first fixing member 6 is first driven into the base layer 3. The first fixing member 6 can be a rivet, and the end of the first fixing member 6 is flush with the surface of the base layer 3. The adhesive side of the first piece of reverse-adhesive waterproof membrane 5 is facing away from the base layer 3 and is attached to the base layer 3. This application adopts a reverse-adhesive waterproofing process. The edge of the reverse-adhesive waterproof membrane 5 covers the first fixing member 6, and the second fixing member 7 is similar to a nail, penetrating the edge of the reverse-adhesive waterproof membrane 5. The second piece of reverse-adhesive waterproof membrane 5 is driven into the base layer 3, fixing the edge of the reverse-adhesive waterproof membrane 5 to the base layer 3. Between the first fixing member 6 and the second fixing member 7, the second fixing member 7 is closer to the edge of the reverse-adhesive waterproof membrane 5. The edge of the second piece of reverse-adhesive waterproof membrane 5 overlaps the edge of the first piece of reverse-adhesive waterproof membrane 5, covering the second fixing member 7. Simultaneously, the iron piece at the end of the second piece of reverse-adhesive waterproof membrane 5 is attracted by the magnet 9 to prevent the end of the second piece of reverse-adhesive waterproof membrane 5 from lifting up. This process is repeated for the remaining reverse-adhesive waterproof membrane 5. After laying, concrete is poured on top of the reverse-adhesive waterproof membrane 5 to form the main layer 4. Figure 1In this application, although the second fastener 7 leaves a hole through the reverse-adhesive waterproof membrane 5, another piece of reverse-adhesive waterproof membrane 5 will cover the hole to prevent external groundwater from seeping into the main layer 4 through the hole.
[0030] As one implementation, the distance from the axis of the second fastener 7 to the end of the corresponding reverse-adhesive waterproof membrane 5 is L1, 10mm. <L1<20mm。
[0031] With the above arrangement, there is a sufficient distance between the second fastener 7 and the end of the reverse-adhesive waterproof membrane 5, so that there is sufficient strength between the second fastener 7 and the end of the reverse-adhesive waterproof membrane 5.
[0032] As one implementation, the distance from the axis of the first fixing member 6 to the axis of the second fixing member 7 is L2, 20mm. <L2<30mm。
[0033] The above settings ensure that the overlap width of two adjacent anti-seepage waterproof membranes 5 is sufficient, thereby improving the seepage prevention effect.
[0034] As one implementation method, the distance from the iron sheet to the end of the corresponding reverse-adhesive waterproof membrane 5 is L3.3mm. <L3<5mm。
[0035] With the above settings, the iron sheet is closer to the end of the reverse-adhesive waterproof membrane 5, and when the iron sheet is adsorbed, the end of the reverse-adhesive waterproof membrane 5 is less likely to curl up.
[0036] As one implementation, the base layer 3 includes a horizontal part 31 and a vertical part 32 disposed on one side of the horizontal part 31. The waterproof structure also includes a chamfered part 10 and a third fixing part 11. The chamfered part 10 is fixed between the horizontal part 31 and the vertical part 32 by the third fixing part 11. The side of the chamfered part 10 away from the base layer 3 is provided with an arc surface 12. The lower end of the arc surface 12 extends to the surface of the horizontal part 31 and is tangent to it. The upper end of the arc surface 12 extends to the surface of the vertical part 32 and is tangent to it. The reverse-adhesive waterproof membrane 5 is laid from the horizontal part 31 to the vertical part 32 through the arc surface 12.
[0037] The above settings facilitate the laying of the reverse-adhesive waterproof membrane 5 at the corner of the wall. The rounded transition of the reverse-adhesive waterproof membrane 5 reduces stress concentration and protects the reverse-adhesive waterproof membrane 5.
[0038] In this application, the horizontal part 31 of the base layer 3 corresponds to the bottom slab of a real underground structure, and the vertical part 32 corresponds to the side wall of a real underground structure. The horizontal part 31 and the vertical part 32 form a right-angled corner. The central angle of the arc surface 12 in this application is 90 degrees. Figure 3One side of the chamfered piece 10 is attached to the vertical part 32, and the upper end of the arc surface 12 extends to the surface of the vertical part 32. The lower side of the chamfered piece 10 is attached to the horizontal part 31, and the lower end of the arc surface 12 extends to the upper surface of the horizontal part 31. The third fastener 11 fixes the chamfered piece 10 to prevent displacement. The reverse-adhesive waterproof membrane 5 on the horizontal part 31 is laid to the surface of the vertical part 32 through the arc surface 12 to prevent the reverse-adhesive waterproof membrane 5 from being bent too much at the corner, reduce the concentrated stress on the reverse-adhesive waterproof membrane 5, and protect the reverse-adhesive waterproof membrane 5. After the reverse-adhesive waterproof membrane 5 is laid, concrete is poured above the horizontal part 31 to form the bottom plate of the main layer 4. Formwork is erected on the inner side of the vertical part 32 and then concrete is poured to form the side wall of the main layer 4.
[0039] As one implementation, the chamfered part 10 has a chamfered surface 13 on the side away from the arc surface 12, and a clearance space with a triangular cross-section is formed between the horizontal part 31, the vertical part 32 and the chamfered surface 13.
[0040] With the above settings, the chamfered part 10 can be attached to the vertical part 32 and the horizontal part 31.
[0041] In reality, there may be some small pebbles at the corner between the horizontal part 31 and the vertical part 32. The chamfered surface 13 of the chamfered part 10 can compare these pebbles, so that the chamfered part 10 can be attached to the vertical part 32 and the horizontal part 31.
[0042] As one implementation, the chamfered part 10 is provided with a mounting hole 14, which extends to the chamfered surface 13 and the arc surface 12 at both ends. A second groove 15 is provided at the end of the mounting hole 14 near the arc surface 12. The third fastener 11 is a rivet, which passes through the mounting hole 14 and is riveted into the base layer 3. The end of the rivet is embedded in the second groove 15.
[0043] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A pre-laid reverse-adhesive waterproof structure for underground engineering, characterized in that, It includes a base layer, a main layer, a reverse-adhesive waterproof membrane, a first fastener and a second fastener. The first fastener is driven into the base layer, and a first groove is provided at the end of the first fastener. A magnet is provided in the first groove. The reverse-adhesive waterproof membrane is provided in multiple pieces and laid on the base layer. The edges of two adjacent reverse-adhesive waterproof membranes overlap each other. The edge of one reverse-adhesive waterproof membrane covers the first fixing member and is fixed to the base layer by the second fixing member. The edge of the other reverse-adhesive waterproof membrane covers the second fixing member and is provided with an iron sheet. The magnet attracts the iron sheet to prevent the edge of the reverse-adhesive waterproof membrane from curling up. The main layer is poured on the side of the anti-adhesive waterproof membrane away from the substrate.
2. The pre-laid reverse-adhesive waterproof structure for underground engineering according to claim 1, characterized in that, The distance from the axis of the second fastener to the end of the corresponding reverse-adhesive waterproof membrane is L1, 10mm. <L1<20mm。 3. The pre-laid reverse-adhesive waterproof structure for underground engineering according to claim 1, characterized in that, The distance from the axis of the first fixing member to the axis of the second fixing member is L2, 20mm. <L2<30mm。 4. The pre-laid reverse-adhesive waterproof structure for underground engineering according to claim 1, characterized in that, The distance from the iron sheet to the end of the corresponding reverse-adhesive waterproof membrane is L3.3mm. <L3<5mm。 5. The pre-laid reverse-adhesive waterproof structure for underground engineering according to claim 1, characterized in that, The base layer includes a horizontal part and a vertical part disposed on one side of the horizontal part. The waterproof structure also includes a chamfered part and a third fixing part. The chamfered part is fixed between the horizontal part and the vertical part by the third fixing part. The side of the chamfered part away from the base layer is provided with an arc surface. The lower end of the arc surface extends to the surface of the horizontal part and is tangent to it. The upper end of the arc surface extends to the surface of the vertical part and is tangent to it. The reverse-adhesive waterproof membrane is laid from the horizontal part to the vertical part through the arc surface.
6. The pre-laid reverse-adhesive waterproof structure for underground engineering according to claim 5, characterized in that, The chamfered part has a chamfered surface on the side away from the arc surface, and a clearance space with a triangular cross-section is formed between the horizontal part, the vertical part and the chamfered surface.
7. The pre-laid reverse-adhesive waterproof structure for underground engineering according to claim 6, characterized in that, The chamfered component has a through mounting hole, with both ends of the mounting hole extending to the chamfered surface and the arc surface, respectively. A second groove is provided at the end of the mounting hole near the arc surface. The third fastener is a rivet, which passes through the mounting hole and is riveted into the base layer. The end of the rivet is embedded in the second groove.