Post-cast strip side wall waterproof structure and construction method thereof
By using a combination structure of prefabricated waterproof plates and high-viscosity and water-sliding asphalt waterproof coating on the side wall of the rear casting belt, the problem of sewage entering during the rear casting belt is solved, and efficient waterproofing effect is achieved and the hidden danger of leakage is avoided.
Patent Information
- Application Number
- CN202411844096.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-15
- Publication Date
- 2025-02-14
AI Technical Summary
In the prior art, sewage is easily entered during the placement of the post-pouring belt, which affects the later casting and exterior wall waterproofing, and leads to hidden dangers of leakage.
The waterproof structure is adopted that combines prefabricated waterproof plates and high viscosity and water-sliding asphalt waterproof coatings. The prefabricated waterproof plates are combined with prefabricated waterproof plate steel bars and C20 concrete. The outer edges are set to arc shape, and the grooves are left to fill high strength. Cement slurry forms an integral waterproof base layer.
It effectively avoids the entry of sewage during the placement of the rear-watering belt, improves the bonding between the rear-watering belt and the prefabricated water-resistant plate, prevents leakage, and ensures the stability and waterproof effect of the basement exterior wall.
Smart Images
Figure CN119434333A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to building construction, in particular to a post-cast side wall waterproof structure and a construction method thereof. Background Art
[0002] The purpose of the post-cast strip is to prevent harmful cracks that may occur in the reinforced concrete structure due to uneven shrinkage or uneven settlement. The installation and construction requires a concrete strip reserved between the base floor, wall, and beam. After the concrete on both sides of the post-cast strip of the base is poured, the post-cast strip has a placement period, which is generally not less than one month. During the placement period, the post-cast strip needs to be temporarily protected to prevent debris and sewage from entering the post-cast strip, affecting the later pouring of the post-cast strip, the waterproofing of the exterior wall, and the backfilling of the earth. In order to solve the above problems, the prior art is to install prefabricated panels on the post-cast strip, but the surface of the concrete after molding is not very flat, resulting in the connection between the protective plate and the concrete on both sides of the post-cast strip not being tight enough, and it is easy for sewage to enter the post-cast strip during the placement period, affecting the later pouring of the post-cast strip. The present invention proposes a post-cast strip side wall waterproofing structure and a construction method thereof to solve the above problems. Summary of the invention
[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a waterproof structure of the side wall of the post-cast strip and a construction method thereof, so as to avoid sewage entering the post-cast strip during the placement of the post-cast strip and affecting the subsequent pouring of the post-cast strip.
[0004] The present invention provides a waterproof structure for the side wall of a back-cast strip, comprising basement exterior walls on both sides of the back-cast strip formed of impermeable concrete and a bottom plate connected to the bottom of the basement exterior walls, the outer sides of the basement exterior walls on both sides are provided with prefabricated waterproof panels whose two ends are respectively overlapped therewith, the two ends of the prefabricated waterproof panels are provided with fine stone concrete columns connected to the outer sides of the basement exterior walls on both sides, the two ends of the prefabricated waterproof panels and the fine stone concrete columns connected thereto are in an arc shape inclined toward the outer wall surface of the basement exterior wall and convex in shape, the outer surface of the prefabricated waterproof panel is provided with a waterproof reinforcement layer which passes through the fine stone concrete columns and the outer wall surface of the basement exterior wall in sequence along its outer surface, and the waterproof reinforcement layer is connected to the bottom plate waterproof layer to form a whole.
[0005] In the above technical solution, the prefabricated waterproof board is formed by combining prefabricated waterproof board steel bars and C20 concrete.
[0006] In the above technical solution, a plurality of vertically arranged concrete grooves are evenly distributed on one side of the prefabricated waterproof plate connected to the back-casting strip.
[0007] In the above technical solution, the upper and lower parts of the other side of the prefabricated waterproof board opposite to the back-casting belt are respectively provided with horizontally arranged prefabricated waterproof board reserved grooves, and the prefabricated waterproof board reserved grooves are each provided with high-strength cement slurry strips engaged therewith.
[0008] In the above technical solution, the back-casting strip is a structure formed by a higher grade micro-expansive concrete.
[0009] In the above technical solution, a water-stop steel plate connecting the back-cast strip and the outer wall of the basement is provided, and a quick-closing net arranged along the cross-sectional direction is provided at the contact point between the back-cast strip and the outer wall of the basement. The contact surface between the back-cast strip and the outer wall of the basement is a concrete roughened and cleaned interface.
[0010] In the above technical solution, the outer walls of the basement on both sides are provided with a bolt hole sealing structure for sealing the holes of the three-section tension bolt water-stop screws arranged along the cross section.
[0011] In the above technical scheme, the waterproof reinforcement layer includes a high-viscosity anti-water-skid bitumen waterproof coating layer that is closely attached to the outer side of the basement outer wall and the outer side of the prefabricated waterproof board, the high-viscosity anti-water-skid bitumen waterproof coating layer extends downward to the top surface of the base plate structure, the outer surface of the high-viscosity anti-water-skid bitumen waterproof coating layer is closely attached to a tire self-adhesive bitumen waterproof membrane, the bottom of the base plate is provided with pre-laid reverse-adhesive waterproof membrane and non-curing asphalt waterproof coating layer from top to bottom in sequence, the pre-laid reverse-adhesive waterproof membrane extends upward from the outer side of the base plate to the top surface of the base plate structure, the tire self-adhesive bitumen waterproof membrane is thrown from the prefabricated waterproof board to the top surface of the base plate structure and overlaps with the pre-laid reverse-adhesive waterproof membrane, the tire self-adhesive bitumen waterproof membrane is on top and the pre-laid reverse-adhesive waterproof membrane is on the bottom, the non-curing asphalt waterproof coating layer extends upward and is integrally connected with the high-viscosity anti-water-skid bitumen waterproof coating layer extending downward, and a brick tire membrane is provided at the front end of the top of the base plate structure to press the waterproof reinforcement layer and the waterproof layer of the base plate.
[0012] In the above technical scheme, the overlap length of the tire self-adhesive asphalt waterproof membrane and the pre-laid reverse-adhesive waterproof membrane is ≥100mm; the bolt hole sealing structure is a three-layer polyurethane waterproof coating structure; the tire self-adhesive asphalt waterproof membrane on the outside of the prefabricated waterproof board is provided with an extruded polystyrene board fixed on the surface and extending downward to the top surface of the basement structure; the reverse casting strip and the basement outer walls on both sides thereof are provided with side wall steel mesh along the wall direction, and the quick-closing mesh is spot-welded to the side wall steel bars; the inner side of the reverse casting strip is provided with a template extending to both sides to the inner side of the basement outer wall, and a square timber structure composed of a secondary keel and a main keel is fixed to the inner side of the template by rivets, and a steel pipe diagonal brace abutting against the square timber structure and the base plate is provided between the square timber structure and the base plate; a concrete cushion layer is provided at the bottom of the non-curing asphalt waterproof coating layer.
[0013] The present invention also provides a waterproof construction method for the side wall of the post-cast strip, which has the following steps: S1. The construction joints of the basement exterior wall are roughened and cleaned. After the construction joints are accepted, the side wall reinforcement is tied. A water-stop steel plate is installed at the connection between the basement exterior wall and the post-cast strip. A quick-closing net is installed in front and behind the water-stop steel plate. The quick-closing net and the side wall reinforcement are spot welded and fixed. After the side wall reinforcement is accepted, the exterior wall formwork is erected, the material and size of the secondary keel and the main keel are designed and calculated, and the formwork is fixed with a three-stage tension bolt and a water-stop screw, wherein the end formwork and the exterior wall formwork are fixed by rivets, and the exterior wall of the basement is fixedly connected with the end formwork of the post-cast strip and the quick-closing net to avoid leakage; S2. The concrete of the basement exterior wall is poured in layers, vibrated and compacted, and the exterior wall is demolded. The concrete on both sides of the formed post-cast strip is roughened to expose the stones, and the floating slurry and the surface are cleaned to form a roughened and cleaned concrete interface; S3. The concrete of the basement exterior wall reaches the designed strength Finally, seal the holes of the three-stage tension bolt water-stop screws, seal the inner side of the basement exterior wall with dry hard cement mortar, apply polyurethane waterproof coating three times on the outer side of the basement exterior wall, complete the bolt hole sealing structure, and install the prefabricated waterproof board. The prefabricated waterproof board is composed of prefabricated waterproof board steel bars, concrete concave strips, C20 concrete, and prefabricated waterproof board reserved grooves. The prefabricated waterproof boards are fixed by spot welding with reserved side wall steel bars, and high-strength cement slurry is poured into the reserved grooves of the prefabricated waterproof boards to form a whole. The prefabricated waterproof board and the basement exterior wall are fixed by fine stone concrete. The outer side of the prefabricated waterproof board The edge is set in an arc shape; S4, waterproof layer construction, first carry out waterproof reinforcement layer construction on the post-cast strip, the waterproof reinforcement layer adopts tire self-adhesive asphalt waterproof membrane, the tire self-adhesive asphalt waterproof membrane extends out on both sides of the edge of the post-cast strip, and the basement exterior wall is painted with high-viscosity anti-water skid asphalt waterproof coating as a whole, the top surface of the basement structure is painted with high-viscosity anti-water skid asphalt waterproof coating, and the basement exterior wall is painted with high-viscosity anti-water skid asphalt waterproof coating to form a whole, the basement waterproof layer is thrown from the brick tire mold to the top surface of the basement structure, the basement exterior wall is laid with tire self-adhesive asphalt waterproof membrane, the basement exterior wall is covered with tire self-adhesive asphalt waterproof membrane The green waterproof membrane is thrown onto the bottom slab waterproof layer, the tire self-adhesive asphalt waterproof membrane of the basement outer wall is on it, and the bottom slab waterproof layer is below, and the tire self-adhesive asphalt waterproof membrane and the bottom slab waterproof layer are overlapped; S5, the outer surface of the tire self-adhesive asphalt waterproof membrane of the basement outer wall is pasted with extruded polystyrene board as a waterproof protective layer, and the earth is backfilled in layers to the top of the basement outer wall; the extruded polystyrene board extends from the top surface of the bottom slab to the top of the basement outer wall; S6, the outer wall of the basement and the inner side of the post-cast strip are supported by formwork, and steel pipe diagonal braces are set. After the main body is capped and the settlement observation is stable, a higher grade of micro-expansive concrete is used to cast, shape, maintain and remove the formwork.
[0014] The post-cast side wall waterproof structure and construction method thereof of the present invention have the following beneficial effects: (1) The end formwork of the post-cast strip and the basement exterior wall formwork are fixed with rivets. The end formwork between the basement exterior wall and the post-cast strip is fixedly connected with the quick-closed net to prevent leakage.
[0015] (2) Prefabricated waterproof boards are used to set concrete concave strips, which improves the bonding between the higher-grade micro-expansion concrete in the post-casting zone and the prefabricated waterproof boards, thus avoiding leakage.
[0016] (3) The outer edge of the prefabricated waterproof board is set to an arc shape to ensure a close connection between the waterproof reinforcement layer and the basement outer wall, thereby avoiding hollowing of the waterproof reinforcement layer.
[0017] (4) By reserving grooves for prefabricated waterproof boards between prefabricated waterproof boards and pouring high-strength cement slurry into the grooves, the integrity of the prefabricated waterproof boards can be improved, cracking can be avoided, the stability of the waterproof base can be ensured, and the leakage risk of the basement exterior wall and the post-casting strip can be effectively solved.
[0018] (5) The entire exterior wall of the basement is coated with high-viscosity anti-water skid bitumen waterproof coating, and the top surface of the basement structure is coated with high-viscosity anti-water skid bitumen waterproof coating to form a whole with the high-viscosity anti-water skid bitumen waterproof coating of the exterior wall of the basement. The basement waterproof layer is thrown from the brick formwork to the top surface of the basement structure. The entire exterior wall of the basement is paved with self-adhesive asphalt waterproof membrane. The basement exterior wall self-adhesive asphalt waterproof membrane is thrown onto the basement waterproof layer. The basement exterior wall waterproof layer is on top and the basement waterproof layer is on the bottom. The overlap length is ≥100mm, so that the basement and the exterior wall waterproof layers form an integrated skin-type waterproof. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of the construction process of the post-cast strip side wall waterproof structure of the present invention, in which the basement exterior wall formwork is erected and the post-cast strip is left; Figure 2 It is a schematic diagram of the structure after pouring the basement exterior wall and cleaning the post-cast strip during the construction process of the post-cast strip side wall waterproof structure of the present invention; Figure 3 It is a structural schematic diagram of the prefabricated waterproof plate after installation during the construction process of the post-cast side wall waterproof structure of the present invention; Figure 4 It is a structural schematic diagram of the prefabricated waterproof board in the waterproof structure of the post-cast side wall of the present invention; Figure 5 It is a schematic diagram of the planar structure after the waterproof construction of the basement exterior wall, the erection of the post-cast strip inner wall formwork and the pouring of a higher grade micro-expansion concrete during the construction process of the post-cast strip side wall waterproof structure of the present invention; Figure 6 It is a schematic diagram of the structural elevation after the post-cast strip inner wall formwork is erected during the construction process of the post-cast strip side wall waterproof structure of the present invention; Figure 7It is a longitudinal cross-sectional view of the post-cast strip inner wall formwork after the prefabricated waterproof board is installed during the construction process of the post-cast strip side wall waterproof structure of the present invention; Figure 8 for Figure 7 The right side view of the structure; Fig. 9 It is a structural schematic diagram of the waterproof structure of the post-cast side wall of the present invention after the construction is completed; Fig.10 It is a schematic diagram of the overall process of the construction method of the post-cast side wall waterproof structure of the present invention. DETAILED DESCRIPTION
[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the present invention.
[0021] Example 1 See also Figures 1 to 9 The waterproof structure of the side wall of the post-cast strip of the present invention includes basement outer walls on both sides of the back-cast strip formed by anti-seepage concrete 9 and a bottom plate 27 connected to the bottom of the basement outer wall. In one or more embodiments, the back-cast strip is a structure formed by a higher-grade micro-expansive concrete 20; the outer sides 22 of the basement outer walls on both sides are provided with prefabricated waterproof panels 11 with two ends respectively overlapped therewith, and the two ends of the prefabricated waterproof panels 11 are provided with fine stone concrete 14 columns connected to the outer sides 22 of the basement outer walls on both sides. The two ends of the prefabricated waterproof panels 11 and the fine stone concrete 14 columns connected thereto are incline toward the outer side 22 of the basement outer wall and are convex in shape. The outer surface of the prefabricated waterproof panel 11 is provided with a waterproof reinforcement layer 16 that passes through the fine stone concrete 14 columns and the outer side 22 of the basement outer wall in sequence along its outer surface, and the waterproof reinforcement layer 16 is connected to the waterproof layer of the bottom plate 27 to form a whole.
[0022] The prefabricated waterproof board 11 is composed of prefabricated waterproof board steel bars 111 and C20 concrete 113; a plurality of vertically arranged concrete grooves 112 are evenly distributed on one side of the prefabricated waterproof board 11 connected to the back-cast strip; the upper and lower parts of the other side of the prefabricated waterproof board 11 opposite to the back-cast strip are respectively provided with horizontally arranged prefabricated waterproof board reserved grooves 114, and the prefabricated waterproof board reserved grooves 114 are each provided with high-strength cement slurry strips that engage with them.
[0023] The inner side of the reverse pouring zone is provided with a template 1 extending to both sides to the inner side 12 of the basement outer wall, and a square wood 19 structure consisting of a secondary keel 3 and a main keel 4 is fixed to the inner side of the template 1 by rivets 5, and a steel pipe diagonal brace 13 is provided between the square wood 19 structure and the bottom plate 27 to abut against the two.
[0024] Example 2 This embodiment is basically the same as Embodiment 1, except that: A water-stop steel plate 7 is provided between the anti-cast strip and the outer wall of the basement to connect the two. A quick-closing net 6 arranged along the cross-sectional direction is provided at the contact point between the anti-cast strip and the outer wall of the basement. A side wall steel bar 8 net is provided along the wall surface direction inside the anti-cast strip and the outer walls of the basement on both sides. The quick-closing net 6 is spot-welded to the side wall steel bars 8. The contact surface between the anti-cast strip and the outer wall of the basement is a concrete roughened and cleaned interface 10.
[0025] The basement exterior walls on both sides are provided with a bolt hole sealing structure 15 for sealing the holes of the three-section tension bolt water-stop screws 2 arranged along the cross section. In one or more embodiments, the bolt hole sealing structure 15 is a three-layer polyurethane waterproof coating 21 structure.
[0026] The waterproof reinforcement layer 16 includes a high-viscosity anti-water-skid bitumen waterproof coating 17 layer that is closely attached to the outer side of the basement outer wall 22 and the outer side of the prefabricated waterproof board 11. The high-viscosity anti-water-skid bitumen waterproof coating 17 layer extends downward to the top surface of the bottom plate 27 structure. The outer surface of the high-viscosity anti-water-skid bitumen waterproof coating 17 layer is closely attached to a tire self-adhesive bitumen waterproof membrane 18. The bottom of the bottom plate 27 is provided with pre-laid reverse-adhesive waterproof membrane 26 and non-curing bitumen waterproof coating 29 layers from top to bottom. The bottom of the non-curing bitumen waterproof coating 29 layer is provided with a concrete cushion layer 25. The pre-laid reverse-adhesive waterproof membrane 26 extends upward from the outer side of the bottom plate 27 to the bottom plate 27 structure. The tire self-adhesive asphalt waterproofing membrane 18 is thrown from the prefabricated waterproof board 11 to the top surface of the bottom plate 27 structure and overlaps with the pre-laid reverse-adhesive waterproofing membrane 26. In one or more embodiments, the overlap length of the tire self-adhesive asphalt waterproofing membrane 18 and the pre-laid reverse-adhesive waterproofing membrane 26 is ≥100mm; the tire self-adhesive asphalt waterproofing membrane 18 is on the top and the pre-laid reverse-adhesive waterproofing membrane 26 is on the bottom, the non-curing asphalt waterproofing coating 29 layer extends upward and is integrally connected with the high-viscosity anti-water-skiing asphalt waterproofing coating 17 layer extending downward, and the front end of the top of the bottom plate 27 structure is provided with a brick tire membrane 24 which presses the waterproof reinforcement layer 16 and the waterproof layer of the bottom plate 27.
[0027] The tire-bonded self-adhesive asphalt waterproofing membrane 18 on the outside of the prefabricated waterproof board 11 is provided with an extruded polystyrene board 23 fixed on the surface and extending downward to the top surface of the base plate 27 structure.
[0028] Example 3 See also Fig.10 The post-cast side wall waterproof structure construction method of the present invention comprises the following steps: S1. See Figure 1, the construction joints of the basement exterior wall are roughened and cleaned. After the construction joints are accepted, the side wall reinforcement 8 is tied. The water stop steel plate 7 is installed at the connection between the basement exterior wall and the post-casting strip. The quick-closing net 6 is installed before and after the water stop steel plate 7. The quick-closing net 6 and the side wall reinforcement 8 are spot welded and fixed. After the side wall reinforcement 8 is accepted as concealed, the exterior wall formwork 1 is erected, and the material and size of the secondary keel 3 and the main keel 4 are determined by design and calculation. The formwork 1 is fixed with three-section tension bolts and water stop screws 2, and the end formwork and the exterior wall formwork 1 are fixed with rivets 5. The exterior wall of the basement is fixedly connected with the end formwork of the post-casting strip and the quick-closing net 6 to avoid leakage; S2, see Figure 2 , pour the concrete of the basement exterior wall in layers, vibrate and compact it, remove the exterior wall formwork, chisel the concrete on both sides of the formed post-casting strip to expose the stones, clean the floating slurry and the surface, and form a concrete chiseling and cleaning interface 10; S3, see Figure 3 After the concrete of the basement exterior wall reaches the design strength, the holes of the three-stage tension bolt water-stop screw 2 are blocked, the inner side of the basement exterior wall 12 is sealed and compacted with dry hard cement mortar, the outer side of the basement exterior wall 22 is painted with polyurethane waterproof coating 21 three times, the bolt hole blocking structure 15 is completed, and the prefabricated waterproof board 11 is installed. Figure 4 The prefabricated waterproof board 11 is composed of a prefabricated waterproof board steel bar 111, a concrete concave strip 112, a C20 concrete 113, and a prefabricated waterproof board reserved groove 114. The prefabricated waterproof board 11 is fixed by spot welding through the reserved side wall steel bar 8. High-strength cement slurry is poured into the prefabricated waterproof board reserved groove 114 to form a whole. The prefabricated waterproof board 11 and the basement outer wall are fixed by fine stone concrete 14. The concrete concave strip 112 improves the post-casting zone concrete and the prefabricated waterproof board. The bonding between the boards 11 is to avoid leakage. The outer side of the prefabricated waterproof board 11 is set to an arc shape, so that the waterproof reinforcement layer 16 is tightly bonded with the outer wall of the basement to avoid hollowing of the waterproof reinforcement layer 16. A prefabricated waterproof board reserved groove 114 is reserved between the prefabricated waterproof boards 11. High-strength cement slurry is poured into the prefabricated waterproof board reserved groove 114 to improve the integrity of the prefabricated waterproof boards 11, avoid cracking, ensure the stability of the waterproof base layer, and reduce the probability of leakage hazards; S4. See Figures 5 to 8, waterproof layer construction, first construct waterproof reinforcement layer 16 on the post-cast strip, waterproof reinforcement layer 16 adopts self-adhesive asphalt waterproof membrane 18, self-adhesive asphalt waterproof membrane 18 extends 250mm on both sides of the edge of the post-cast strip, and the high-viscosity anti-water-skiing asphalt waterproof coating 17 is applied to the entire basement exterior wall, and the top surface of the bottom plate 27 structure is painted with high-viscosity anti-water-skiing asphalt waterproof coating 17, and the high-viscosity anti-water-skiing asphalt waterproof coating 17 is applied to the exterior wall of the basement to form a whole, the waterproof layer of the bottom plate 27 is thrown from the brick mold 24 to the top surface of the bottom plate 27 structure, and the self-adhesive asphalt waterproof membrane 18 is laid on the entire exterior wall of the basement, and the self-adhesive asphalt waterproof membrane 18 of the basement exterior wall is thrown to the waterproof layer of the bottom plate 21, the self-adhesive asphalt waterproof membrane 18 of the basement exterior wall is on the top, and the waterproof layer of the bottom plate 27 is on the bottom, and the self-adhesive asphalt waterproof membrane 18 of the basement exterior wall is overlapped with the waterproof layer of the bottom plate 27, and the overlap length is ≥100mm; S5. The outer surface of the self-adhesive asphalt waterproofing membrane 18 of the basement outer wall is pasted with an extruded polystyrene board 23 as a waterproof protective layer, and the earth is backfilled in layers to the top of the basement outer wall; the extruded polystyrene board 23 extends from the top surface of the bottom plate 27 to the top of the basement outer wall; S6. The outer wall and the inner side of the post-casting strip of the basement are supported by steel pipe diagonal braces 13. After the main body is capped and the settlement observation is stable, a higher grade of micro-expansive concrete 20 is used for pouring, curing and demolding. Fig. 9 .
[0029] Innovation: (1) The end formwork of the post-cast strip and the basement exterior wall formwork 1 are fixed with rivets 5, and the end formwork between the basement exterior wall and the post-cast strip is fixedly connected with the quick-closed net to prevent leakage.
[0030] (2) The prefabricated waterproof board 11 is used to set the concrete groove 112, which improves the bonding between the higher grade micro-expansion concrete 20 of the post-cast zone and the prefabricated waterproof board 11 to avoid leakage.
[0031] (3) The outer side of the prefabricated waterproof board 11 is set to be arc-shaped, so that the waterproof reinforcement layer 16 is closely combined with the outer wall of the basement to avoid hollowing of the waterproof reinforcement layer 16.
[0032] (4) By reserving a prefabricated waterproof board reserved groove 114 between the 11 prefabricated waterproof boards and pouring high-strength cement slurry into the reserved groove 114 of the prefabricated waterproof board, the integrity of the 11 prefabricated waterproof boards is improved, cracking is avoided, the stability of the waterproof base is ensured, and the leakage risk of the basement exterior wall and the post-casting strip is effectively solved.
[0033] (5) The entire exterior wall of the basement is coated with a high-viscosity anti-water-skid asphalt waterproof coating 17, and the top surface of the bottom plate 27 structure is coated with a high-viscosity anti-water-skid asphalt waterproof coating 17, which forms a whole with the high-viscosity anti-water-skid asphalt waterproof coating of the exterior wall of the basement. The waterproof layer of the bottom plate 27 is thrown from the brick formwork 24 to the top surface of the bottom plate 27 structure, and the entire exterior wall of the basement is paved with a tire self-adhesive asphalt waterproof membrane. The tire self-adhesive asphalt waterproof membrane 18 of the basement exterior wall is thrown onto the waterproof layer of the bottom plate 27. The waterproof layer of the exterior wall of the basement is on top, and the waterproof layer of the bottom plate 27 is on the bottom. The overlap length is ≥100mm, so that the bottom plate 27 and the waterproof layer of the exterior wall of the basement form an overall skin-type waterproof.
[0034] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
[0035] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
Claims
1. A waterproof structure for the side wall of a back-cast strip, comprising basement exterior walls on both sides of the back-cast strip formed of impermeable concrete (9) and a bottom plate (27) connected to the bottom of the basement exterior wall, characterized in that: The outer sides (22) of the basement exterior walls on both sides are provided with prefabricated waterproof panels (11) with two ends respectively overlapping therewith, and the two ends of the prefabricated waterproof panels (11) are provided with fine stone concrete (14) columns connected to the outer sides (22) of the basement exterior walls on both sides, and the two ends of the prefabricated waterproof panels (11) and the fine stone concrete (14) columns connected thereto are in an arc shape inclined toward the outer side (22) wall surface of the basement exterior wall and convex in shape, and the outer surface of the prefabricated waterproof panels (11) is provided with a waterproof reinforcement layer (16) along its outer surface, which passes through the fine stone concrete (14) columns and the outer side (22) wall surface of the basement exterior wall in sequence, and the waterproof reinforcement layer (16) is connected to the waterproof layer of the bottom plate (27) to form a whole.
2. The post-cast side wall waterproof structure according to claim 1 is characterized in that: The prefabricated waterproof plate (11) is formed by combining prefabricated waterproof plate steel bars (111) and C20 concrete (113).
3. The post-cast side wall waterproof structure according to claim 2 is characterized in that: A plurality of vertically arranged concrete grooves (112) are evenly distributed on one side of the prefabricated waterproof plate (11) connected to the back-casting strip.
4. The post-cast side wall waterproof structure according to claim 3 is characterized in that: The upper and lower parts of the other side of the prefabricated waterproof board (11) opposite to the backcast strip are respectively provided with horizontally arranged prefabricated waterproof board reserved grooves (114), and the prefabricated waterproof board reserved grooves (114) are each provided with high-strength cement slurry strips engaged therewith.
5. The post-cast side wall waterproof structure according to claim 4 is characterized in that: The reverse casting strip is a structure formed by a higher grade micro-expansive concrete (20).
6. The post-cast side wall waterproof structure according to claim 5 is characterized in that: A water-stop steel plate (7) is provided between the reverse pouring strip and the basement outer wall to connect the two, a quick-closing net (6) arranged along the cross-sectional direction of the reverse pouring strip and the basement outer wall is provided at the contact point between the reverse pouring strip and the basement outer wall, and the contact surface between the reverse pouring strip and the basement outer wall is a concrete roughened and cleaned interface (10).
7. The post-cast side wall waterproof structure according to claim 6 is characterized in that: The basement exterior walls on both sides are provided with bolt hole sealing structures (15) for sealing the holes of the three-section tension bolt water-stop screws (2) arranged along the cross section.
8. The post-cast side wall waterproof structure according to claim 7 is characterized in that: The waterproof reinforcement layer (16) comprises a layer of high-viscosity anti-water-skid bitumen waterproof coating (17) which is closely attached to the outer side of the basement outer wall (22) and the outer side of the prefabricated waterproof board (11); the layer of high-viscosity anti-water-skid bitumen waterproof coating (17) extends downward to the top surface of the base plate (27) structure; the outer surface of the layer of high-viscosity anti-water-skid bitumen waterproof coating (17) is closely attached to a self-adhesive bitumen waterproofing membrane (18); the bottom of the base plate (27) is provided with pre-laid reverse-adhesive waterproofing membrane (26) and non-curing bitumen waterproofing coating (29) layers in sequence from top to bottom; the pre-laid reverse-adhesive waterproofing membrane (26) is disposed from the outer side of the base plate (27) to the top surface of the base plate (27); The self-adhesive asphalt waterproofing membrane (18) is thrown from the prefabricated waterproof board (11) to the top surface of the bottom plate (27) structure and overlaps with the pre-laid reverse-adhesive waterproofing membrane (26), the self-adhesive asphalt waterproofing membrane (18) is on the top and the pre-laid reverse-adhesive waterproofing membrane (26) is on the bottom, the non-curing asphalt waterproofing coating (29) layer extends upward and is integrally connected with the high-viscosity anti-water-skid asphalt waterproofing coating (17) layer extending downward, and the front end of the top of the bottom plate (27) structure is provided with a brick membrane (24) for pressing the waterproof reinforcement layer (16) and the waterproof layer of the bottom plate (27).
9. The post-cast side wall waterproof structure according to claim 8, characterized in that: The overlap length between the tire-bonded self-adhesive asphalt waterproofing membrane (18) and the pre-laid reverse-adhesive waterproofing membrane (26) is ≥100 mm; The bolt hole sealing structure (15) is a three-layer polyurethane waterproof coating (21) structure; The tire-bonded self-adhesive asphalt waterproofing membrane (18) on the outside of the prefabricated waterproof board (11) is provided with an extruded polystyrene board (23) fixed on the surface and extending downward to the top surface of the base plate (27) structure; Side wall reinforcement (8) mesh is provided in the reverse pouring strip and the basement exterior walls on both sides thereof along the wall surface direction, and the quick closing mesh (6) is spot-welded to the side wall reinforcement (8); The inner side of the reverse pouring strip is provided with a template (1) extending to both sides to the inner side (12) of the basement outer wall, the inner side of the template (1) is fixed with a square wood (19) structure consisting of a secondary keel (3) and a main keel (4) by rivets (5), and a steel pipe diagonal brace (13) is provided between the square wood (19) structure and the bottom plate (27) to abut against the two; A concrete cushion layer (25) is provided at the bottom of the non-curing asphalt waterproof coating (29) layer.
10. A method for constructing a waterproof structure of a post-cast strip side wall, characterized in that: The following steps are involved: S1. The construction joints of the basement exterior walls are roughened and cleaned. After the construction joints are accepted, the side wall reinforcements (8) are tied. Waterstop steel plates (7) are installed at the connection between the basement exterior walls and the post-cast strips. Quick-closing nets (6) are installed before and after the waterstop steel plates (7). The quick-closing nets (6) and the side wall reinforcements (8) are spot welded and fixed. After the side wall reinforcements (8) are accepted, the exterior wall formwork (1) is erected. The materials and sizes of the secondary keels (3) and the main keels (4) are designed and calculated. The formwork (1) is fixed with three-section tension bolts and waterstop screws (2). The end formwork and the exterior wall formwork (1) are fixed with rivets (5). The exterior wall of the basement is fixed with the end formwork of the post-cast strip and the quick-closing net (6) to prevent leakage. S2. Pour the concrete of the basement exterior wall in layers, vibrate and compact it, remove the exterior wall formwork, roughen the concrete on both sides of the post-casting strip after forming to expose the stones, clean the floating slurry and the surface, and form a roughened and cleaned concrete interface (10); S3. After the concrete of the basement outer wall reaches the design strength, the holes of the three-stage tension bolt water-stop screw (2) are sealed, the inner side (12) of the basement outer wall is sealed and compacted with dry hard cement mortar, the outer side (22) of the basement outer wall is painted with polyurethane waterproof coating (21) three times, the bolt hole sealing structure (15) is sealed, and a prefabricated waterproof board (11) is installed. The prefabricated waterproof board (11) is composed of prefabricated waterproof board steel bars (111), concrete concave strips (112), C20 concrete (113), and prefabricated waterproof board reserved grooves (114). The prefabricated waterproof board (11) is fixed by spot welding with reserved side wall steel bars (8), and high-strength cement slurry is poured into the prefabricated waterproof board reserved grooves (114) to form a whole. The prefabricated waterproof board (11) and the basement outer wall are fixed by fine stone concrete (14), and the outer side edge of the prefabricated waterproof board (11) is set to be an arc shape; S4, waterproof layer construction, firstly, the waterproof reinforcement layer (16) is constructed on the post-cast strip, the waterproof reinforcement layer (16) uses a tire self-adhesive asphalt waterproof membrane (18), the tire self-adhesive asphalt waterproof membrane (18) extends on both sides of the edge of the post-cast strip, and the high-viscosity anti-water-skid asphalt waterproof coating (17) is applied to the entire basement exterior wall, the top surface of the basement (27) structure is painted with a high-viscosity anti-water-skid asphalt waterproof coating (17), and the basement exterior wall is painted with a high-viscosity anti-water-skid asphalt waterproof coating (17) The basement (21) is formed into a whole, the waterproof layer of the basement (27) is thrown from the brick formwork (24) to the top surface of the basement (27) structure, and the basement exterior wall is entirely paved with a self-adhesive asphalt waterproofing membrane (18). The basement exterior wall has a self-adhesive asphalt waterproofing membrane (18) thrown onto the basement (21) waterproofing layer, the basement exterior wall has a self-adhesive asphalt waterproofing membrane (18) on the top, and the basement (27) waterproofing layer is on the bottom, and the self-adhesive asphalt waterproofing membrane (18) and the basement (27) waterproofing layer are overlapped; S5, an extruded polystyrene board (23) is pasted on the outer surface of the self-adhesive asphalt waterproofing membrane (18) of the basement outer wall as a waterproof protective layer, and the earth is backfilled in layers to the top of the basement outer wall; the extruded polystyrene board (23) extends from the top surface of the bottom plate (27) to the top of the basement outer wall; S6. The outer wall of the basement and the inner side of the post-casting strip are supported by steel pipe diagonal braces (13). After the main body is capped and the settlement observation is stable, a higher grade of micro-expansive concrete (20) is used for pouring, shaping, curing and demolding.