Sponge city rainwater box culvert structure expansion joint water stop connecting bin pouring device
By using water-expanded water stops, polyethylene closed-cell foam plates and two-component polysulfide sealant at the expansion joints of the sponge urban rainwater tank culvert structure, the sealing layer is formed, which solves the problem of poor water stopping effect of expansion joints in the existing technology, and achieves efficient water seepage protection and construction efficiency improvement.
Patent Information
- Application Number
- CN202421595040.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-08
AI Technical Summary
The existing sponge urban rainwater drainage structure has poor water stopping effect at the expansion joints, resulting in water leakage problems, and is high in maintenance costs and difficult to cure.
A water stop conduit pouring device for expansion joint of sponge urban rainwater tank culvert structure is adopted, including reinforced concrete structure, water-expanded water stop, polyethylene closed-cell foam plastic plate and two-component polysulfide sealant. Through the combination and arrangement of these materials, a sealing layer is formed to prevent water seepage.
Effective water stop at the expansion joints is achieved, construction cycle and cost is reduced, construction efficiency is improved, and the wear resistance, waterproof and aging resistance of the structure is enhanced.
Smart Images
Figure CN222758753U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of continuous bin pouring construction of reinforced concrete box culvert structures, in particular to a continuous bin pouring device for expansion joint water-stopping of a rainwater box culvert structure in a sponge city. Background Art
[0002] The rainwater and drainage structures in sponge cities are generally linear projects with many expansion joints and long distances. Expansion joint water stopping is the key node. At the same time, once leakage occurs in structures such as box culverts, canals, and culverts, it will cause serious consequences and be troublesome to repair.
[0003] Existing expansion joint water stoppers for rainwater drainage structures in sponge cities generally adopt a single water stopper structure adjustment warehouse construction technology. The single structure has poor waterproof effect, high maintenance cost and is difficult to cure water leakage, which affects the use function. The adjustment warehouse construction technology has a long construction period and complicated process. Therefore, it is necessary to provide a sponge city rainwater drainage structure expansion joint water stopper continuous warehouse casting device technology. Summary of the invention
[0004] The purpose of the utility model is to address the deficiencies in the prior art and provide a sponge city rainwater box culvert structure expansion joint water-stopping continuous bin casting device to solve the problem of water seepage during the expansion joint water-stopping construction process of the sponge city rainwater box culvert structure.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A sponge city rainwater box culvert structure expansion joint water-stopping continuous chamber casting device, comprising a first structure, a second structure, an expansion joint arranged between the first structure and the second structure, and an expansion joint water-stopping structure;
[0007] The first structure and the second structure are both reinforced concrete structures;
[0008] The expansion joint water-stopping structure comprises a water-swelling water-stopping strip, a polyethylene closed-cell foam plastic board and a two-component polysulfide sealant;
[0009] The two sides of the water-swellable waterstop are respectively fixed to the first structure and the second structure, the polyethylene closed-cell foam board is filled in the expansion joint between the first structure and the second structure and is located on both sides of the water-swellable waterstop, and the two-component polysulfide sealant is filled in the expansion joint between the first structure and the second structure to form a sealing layer and is located on the outside of the polyethylene closed-cell foam board.
[0010] Wherein, the two wings of the centerline compression seam of the water-expandable waterstop are respectively provided with expansion ribs.
[0011] It also includes a water-stopping structure on the water-facing surface, which includes a two-component epoxy primer coated on the first structure, a two-component polysulfide sealant and the water-facing surface of the second structure, and a polyurea waterproof coating sprayed on the two-component epoxy primer.
[0012] Among them, the two sides of the water-expandable waterstop are fixed in the first structure and the second structure by longitudinal positioning steel bars, and several of the longitudinal positioning steel bars are fixed by transverse positioning steel bars, and the longitudinal positioning steel bars are tied to the steel structures in the first structure and the second structure.
[0013] Wherein, the polyethylene closed-cell foam plastic board is fixedly connected to the longitudinal positioning steel bars.
[0014] Among them, the expansion joint located on the outer side of the polyethylene closed-cell foam board is a wedge-shaped cavity.
[0015] In summary, the sponge city rainwater box culvert structure expansion joint water-stopping and continuous bin casting device of the present application has the following features:
[0016] Beneficial effects:
[0017] The present application provides a sponge city rainwater box culvert structure expansion joint water-stopping continuous chamber casting device, which changes the traditional rainwater drainage structure separate chamber casting to the expansion joint water-stopping device continuous chamber casting, ensuring that the expansion joint water-stopping structure is tightly bonded with the concrete, and has a good water-stopping and anti-seepage effect. At the same time, continuous chamber casting reduces the construction period and cost, improves construction efficiency and increases economic benefits. At the same time, it enhances the beauty of the exposed surface of the expansion joint between the structures, and has multiple functions such as wear resistance, waterproofness, and aging resistance. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 It is a schematic diagram of a sponge city rainwater box culvert structure expansion joint water-stopping and continuous bin casting device disclosed in the utility model;
[0020] Figure 2 The utility model discloses a cross-sectional view of a sponge city rainwater box culvert structure expansion joint water-stopping connected bin casting device during the construction process of a wedge-shaped cavity.
[0021] Among them: 1. The first structure, 2. The second structure, 3. Water-swelling waterstop, 4. Polyethylene closed-cell foam plastic board, 5. Two-component polysulfide sealant, 6. Two-component epoxy primer, 7. Polyurea waterproof coating, 8. Water-facing surface, 9. Longitudinal positioning steel bars, 10. Transverse positioning steel bars, 11. Wedge-shaped stainless steel modules, 12. Stainless steel round wedges. DETAILED DESCRIPTION
[0022] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those of ordinary skill in the art to which the present application belongs.
[0023] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0024] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for clarity, the thickness of the layers and regions is enlarged, and the same reference numerals are used to represent the same devices, so their description will be omitted.
[0025] like Figure 1 As shown, a sponge city rainwater box culvert structure expansion joint water-stopping continuous chamber casting device comprises a first structure 1, a second structure 2, an expansion joint arranged between the first structure 1 and the second structure 2, and an expansion joint water-stopping structure;
[0026] The first structure 1 and the second structure 2 are both culvert reinforced concrete structures;
[0027] The expansion joint water-stop structure includes a water-swelling water-stop strip 3, a polyethylene closed-cell foam plastic board 4 and a two-component polysulfide sealant 5; each section of the box culvert reinforced concrete structure is provided with an expansion joint water-stop structure and a rainwater swelling water-stop strip 3 in the long direction; the water-swelling water-stop strip 3 runs through the entire circumference of the seam between the first structure 1 and the second structure 2;
[0028] The two sides of the water-swellable waterstop 3 are respectively fixed to the first structure 1 and the second structure 2, the polyethylene closed-cell foam board 4 is filled in the expansion joint between the first structure 1 and the second structure 2 and is located on both sides of the water-swellable waterstop 3, and the two-component polysulfide sealant 5 is filled in the expansion joint between the first structure 1 and the second structure 2 to form a sealing layer and is located on the outside of the polyethylene closed-cell foam board 4.
[0029] Water-swelling rubber is used to replace the traditional reinforcing ribs, and the water-swelling waterstop 3 is fixed to both sides of the center of the expansion joint through longitudinal positioning steel bars 9; the longitudinal positioning steel bars 9 are tied to the steel structures in the first structure 1 and the second structure 2, and fixed through transverse positioning steel bars 10. The polyethylene closed-cell foam plastic board 4 is fixedly connected to the longitudinal positioning steel bars 9.
[0030] During specific implementation, the water-expandable waterstop strip 3 is provided with expansion ribs on both wings of the centerline compression seam.
[0031] In specific implementation, it also includes a water-stopping structure on the water-facing surface, which includes a two-component epoxy primer 6 painted on the first structure 1, a two-component polysulfide sealant 5 and the water-facing surface 8 of the second structure 2, and a polyurea waterproof coating 7 sprayed on the two-component epoxy primer 6.
[0032] In a specific implementation, the expansion joint located outside the polyethylene closed-cell foam board 4 is a wedge-shaped cavity.
[0033] When the wedge-shaped cavity is formed, wedge-shaped stainless steel modules 11 are placed at both ends of the joint, and a stainless steel round wedge 12 is set between the wedge-shaped stainless steel modules 11. The wedge-shaped stainless steel module 11 has a wedge-shaped structure that is narrow inside and wide outside. After the first structure 1 and the second structure 2 are cast and formed, the stainless steel round wedge 12 is taken out first, and then the wedge-shaped stainless steel module 11 is taken out, so that a wedge-shaped cavity is formed at both ends of the expansion joint; the wedge-shaped cavity is filled with the two-component polysulfide sealant 5.
[0034] The first structure 1 and the second structure 2 are both structures. The thickness of the reinforced concrete structure of the rainwater box culvert is 250-300mm. The expansion joint water stop structure water-expanding water stop 3 is set every 25.0m. The water-expanding water stop 3 runs through the entire expansion joint of the structure for 9.60m. The water-expanding water stop 3 is 400mm wide. The expansion bars with a height of 15mm are set on both wings of the centerline pressure joint. Water-expanding rubber is used instead of traditional reinforcement bars. The water-expanding water stop 3 is fixed to the center of the expansion joint through longitudinal positioning steel bars 9 with a diameter of 10mm, and the upper and lower sides are 80mm high. The longitudinal positioning steel bars 9 are tied to the steel structure inside the structure 1 and fixed by transverse positioning steel bars 10 with a diameter of 10mm. At the same time, a 20mm thick polyethylene closed-cell foam plastic board 4 is placed on the upper and lower sides of the water-expandable waterstop 3 at a height of 80mm lower than the depth of the wedge-shaped cavity, a 10-15mm long 30mm wedge-shaped stainless steel module 11 is set, and a 15mm diameter stainless steel round wedge 12 is installed in the middle of the wedge-shaped stainless steel module 11 at the surface layer of the structure. The reinforced concrete of the structures on both sides of the expansion joint waterstop is poured in a continuous warehouse.
[0035] The expansion joint is 25mm wide, the wedge-shaped cavity is 20mm wide inside, 25mm wide outside and 30mm deep. After the concrete strength reaches 5Mpa, the stainless steel round wedge is removed to form a cavity, which is filled with a two-component polysulfide sealant 5 to achieve waterproof and water-stopping effects. After the concrete reaches the age and the surface is dry, a 1mm two-component epoxy primer is sprayed on the water-facing surface 8 of the structure. Then a polyurea waterproof coating 7 is sprayed, which is composed of isocyanate components and amino compound components, and is a fast-curing type, and is sprayed 2mm thick.
[0036] The construction process is as follows: Figure 2 :
[0037] The expansion joint structure is completed by first installing longitudinal and transverse positioning steel bars, namely the transverse positioning steel bars 10 and the longitudinal positioning steel bars 9 to fix the water-swelling waterstop 3 and the polyethylene closed-cell foam plastic board 4, and then installing the wedge-shaped stainless steel module 11 and the stainless steel round wedge 12. The concrete structures on both sides, namely the first structure 1 and the second structure 2, are cast in a connected warehouse, the round wedge 12 and the wedge-shaped stainless steel module 11 are removed, and the expansion joint is filled and the water-facing surface 8 is waterproofed by using a two-component polysulfide sealant 5, that is, the two-component epoxy primer 6 is applied to the water-facing surface 8, and after the two-component epoxy primer 6 is dried, a polyurea waterproof coating 7 is sprayed on the two-component epoxy primer 6.
[0038] By studying the expansion joint water-stopping continuous bin casting technology of the reinforced concrete structure of the sponge city rainwater box culvert in the sponge city sunken green belt rainwater project of the municipal road project, a sponge city rainwater box culvert structure expansion joint water-stopping continuous bin casting device is adopted, and the traditional rainwater drainage structure compartment casting is changed to the expansion joint water-stopping device continuous bin casting, so as to ensure that the expansion joint water-stopping structure is closely bonded with the concrete and has a good water-stopping and anti-seepage effect. At the same time, the continuous bin casting reduces the construction cycle cost, improves the construction efficiency and increases the economic benefits, and at the same time enhances the beautiful characteristics of the exposed surface of the seam between the structures, and has multiple functions such as wear resistance, waterproofness, and aging resistance.
[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.
[0041] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A sponge city rainwater box culvert structure expansion joint water-stopping and continuous bin casting device, characterized in that: It comprises a first structure (1), a second structure (2), an expansion joint arranged between the first structure (1) and the second structure (2), and an expansion joint water-stopping structure; The first structure (1) and the second structure (2) are both reinforced concrete structures; The expansion joint water-stopping structure comprises a water-swelling water-stopping strip (3), a polyethylene closed-cell foam plastic board (4) and a two-component polysulfide sealant (5); The two sides of the water-swellable waterstop (3) are respectively fixed to the first structure (1) and the second structure (2); the polyethylene closed-cell foam plastic board (4) is filled in the expansion joint between the first structure (1) and the second structure (2) and is located on both sides of the water-swellable waterstop (3); the two-component polysulfide sealant (5) is filled in the expansion joint between the first structure (1) and the second structure (2) to form a sealing layer and is located on the outside of the polyethylene closed-cell foam plastic board (4).
2. According to claim 1, a sponge city rainwater box culvert structure expansion joint water-stopping continuous bin casting device is characterized in that: The water-expandable waterstop (3) is provided with expansion ribs on both wings of the centerline compression seam.
3. The sponge city rainwater box culvert structure expansion joint water-stopping and continuous bin casting device according to claim 1 is characterized in that: It also includes a water-facing surface water-stopping structure, which includes a two-component epoxy primer (6) brushed on the first structure (1), a two-component polysulfide sealant (5) and the water-facing surface (8) of the second structure (2), and a polyurea waterproof coating (7) sprayed on the two-component epoxy primer (6).
4. The sponge city rainwater box culvert structure expansion joint water-stopping and continuous bin casting device according to claim 1 is characterized in that: The two sides of the water-expandable waterstop (3) are fixed in the first structure (1) and the second structure (2) by longitudinal positioning steel bars (9), and a number of the longitudinal positioning steel bars (9) are fixed by transverse positioning steel bars (10). The longitudinal positioning steel bars (9) are tied to the steel structures in the first structure (1) and the second structure (2).
5. A sponge city rainwater box culvert structure expansion joint water-stopping and continuous chamber casting device according to claim 4, characterized in that: The polyethylene closed-cell foam plastic board (4) is fixedly connected to the longitudinal positioning steel bars (9).
6. A sponge city rainwater box culvert structure expansion joint water-stopping and continuous bin casting device according to claim 4, characterized in that: The expansion joint located outside the polyethylene closed-cell foam plastic plate (4) is a wedge-shaped cavity.