Method for laying water supply pipes in a concrete modular building thin wall membrane

Abstract

This invention discloses a method for concealed installation of water supply pipes in a thin-walled membrane structure for modular concrete buildings, comprising the following steps: inserting an inner PB flexible hose into an outer flexible plastic sleeve to form a double-layer combined sleeve; pre-embedding the double-layer combined sleeve within a membrane shell steel mold; pre-embedding a junction box at the water point and connecting it to the double-layer combined sleeve; pouring concrete into the membrane shell steel mold and curing it; connecting the inner PB flexible hose to a horizontal water supply pipe suspended from the prefabricated bathroom ceiling slab via an upper conversion joint; and connecting and fixing the inner PB flexible hose to a faucet or angle valve via a lower conversion joint, thus completing the concealed installation of the water supply pipes in the bathroom functional area. During the water supply pipe installation process in the bathroom functional area, the water supply pipes can be laid within composite beams or shear walls. The inner PB water supply pipes can be pulled out from the junction box using the combined sleeve and junction box, enabling convenient maintenance. The concealed installation of the bathroom water supply pipes is completed in the factory, saving on-site construction time.

Description

Technical Field

[0001] This invention relates to the field of modular building water supply pipe laying technology, specifically to a method for concealed installation of thin-wall membrane water supply pipes in modular concrete buildings. Background Technology

[0002] Modular concrete buildings use standard modules as basic units, completing module production, kitchen and bathroom appliance installation, electromechanical pipeline installation, and integrated decoration and finishing in the factory. During factory production, modular integrated buildings use steel formwork to fix the size and shape, with electromechanical pipelines pre-embedded within the formwork. After a series of operations including pouring, curing, and formwork removal, and passing inspection, the finished product is transported to the construction site for module assembly and pipeline connection between module units. This is a new type of rapid construction method with advantages such as high degree of prefabrication integration, fast construction efficiency, and high construction quality.

[0003] In modular concrete building structures, load-bearing shear walls and beams are cast-in-place on the ground. To achieve rapid construction without formwork, 30mm thick reinforced thin wall or beam membranes are used as the membrane shell for the cast-in-place shear walls or beams. To save space in bathroom renovations, thin-lay technology (tiles plus tile adhesive totaling 20mm) is used for the walls. The above space cannot meet the requirement for concealed installation of vertical water supply branch pipes for sanitary fixtures in the kitchen and bathroom, combined with the wall surface and decorative layer.

[0004] In existing technologies, when water supply pipes are concealed, thickening of the membrane shell or decorative surface layer is usually used to meet the requirements of concealed water supply branch pipes. However, this has the following drawbacks: it increases the consumption of wall materials, occupies indoor space, and increases the weight of the module. Summary of the Invention

[0005] The purpose of this invention is to provide a method for concealing water supply pipes in thin-walled modular concrete buildings, which solves the problem in the prior art that water supply pipes for bathrooms cannot be concealed in thin-walled modular integrated buildings.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A method for concealed installation of water supply pipes in a thin-walled membrane structure of a modular concrete building includes the following steps:

[0008] Step 1: Prepare the inner PB hose and outer flexible plastic sleeve according to the design length requirements. The inner diameter of the outer flexible plastic sleeve is larger than the outer diameter of the inner PB hose. Insert the inner PB hose into the outer flexible plastic sleeve to form a double-layer combined sleeve.

[0009] Step 2: Make a hole at the designed position of the thin beam membrane shell plate, pass the top of the double-layer combined sleeve through the hole and pre-embed it in the membrane shell steel mold, and pre-embed UPVC sleeve at the designed position on the thin beam membrane shell plate.

[0010] Step 3: Pre-embed the junction box at the water point, and glue the outer flexible plastic sleeve of the double-layer combined sleeve to the interface socket of the junction box. The inner PB hose passes through the interface of the junction box and enters the junction box. Seal the side plate of the junction box and fix the double-layer combined sleeve.

[0011] Step 4: Pour concrete inside the membrane shell steel mold to form the precast composite beams, precast building walls and precast bathroom ceiling in the bathroom functional area. Pour the membrane shell concrete and cure it to shape, then remove the membrane shell steel mold.

[0012] Step 5: Remove the steel formwork, connect the inner PB hose to the water supply horizontal pipe hanging on the prefabricated bathroom ceiling through the upper conversion joint, open the side panel of the junction box at the water point, connect the inner PB hose to the faucet or angle valve through the lower conversion joint and fix it, thus completing the concealed installation of the water supply pipe in the bathroom functional area.

[0013] As a further aspect of the present invention: the thin beam membrane shell plate in step two is used as the steel formwork for the cast-in-place composite beam. During the assembly of the concrete modular building at the construction site, the cast-in-place composite beam is integrally cast onto the precast composite beam.

[0014] As a further aspect of the present invention: in step two, the thickness of the thin beam membrane shell plate is 30mm, and the thickness of the cast-in-place composite beam is 200mm.

[0015] As a further aspect of the present invention: in step two, a UPVC sleeve of model De50 is pre-embedded on the thin beam membrane shell plate, and the outer flexible plastic sleeve passes through the UPVC sleeve and enters below the prefabricated bathroom ceiling.

[0016] As a further aspect of the present invention: in step four, the thickness of the precast composite beam and the precast building wall are both 230mm.

[0017] As a further aspect of the present invention: after the inner PB hose is connected to the water supply horizontal pipe in step five, a bathroom ceiling is installed below the prefabricated bathroom ceiling. One side panel of the bathroom ceiling is fixedly connected to the prefabricated composite beam, and the water supply horizontal pipe is encapsulated in the cavity between the prefabricated bathroom ceiling and the bathroom ceiling.

[0018] The beneficial effects of this invention are:

[0019] (1) In the cast-in-place beam and thick wall membrane, the inner PB hose with an outer flexible plastic sleeve is concealed so that the inner PB hose is encapsulated in the pre-embedded outer flexible plastic sleeve, which provides good protection for the inner PB hose. The integrated casting facilitates construction, reduces the cost of thickening the decorative surface layer, and saves indoor space, reduces construction costs and materials.

[0020] (2) When the water supply pipeline is damaged and needs to be replaced or repaired, the connection between the water supply horizontal pipe and the inner PB hose can be disconnected, the suspended water supply horizontal pipe can be removed and replaced or repaired, and the inner PB hose can be pulled out from the outer flexible plastic sleeve from the junction box for replacement or repair. There is no need to damage the modular building structure, and the replacement and repair operation is time-saving and labor-saving, which helps to improve the efficiency of water supply pipeline replacement and repair. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] In the diagram: 1. Horizontal water supply pipe; 2. Upper conversion joint; 3. Inner PB flexible hose; 4. Outer flexible plastic sleeve; 5. Thin beam membrane shell panel; 6. Precast composite beam; 7. Precast building wall; 8. Connection box; 9. Lower conversion joint; 10. UPVC sleeve; 11. Precast bathroom ceiling slab; 12. Bathroom ceiling; 13. Cast-in-place composite beam. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention; in the description of this invention, "a plurality of" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] Please see Figure 1 As shown, this invention provides a method for concealed installation of water supply pipes in a thin-walled membrane structure of a modular concrete building, comprising the following steps:

[0027] Step 1: Prepare the inner PB hose 3 and the outer flexible plastic sleeve 4 according to the design length requirements. The inner diameter of the outer flexible plastic sleeve 4 is larger than the outer diameter of the inner PB hose 3. Insert the inner PB hose 3 into the outer flexible plastic sleeve 4 to form a double-layer combined sleeve.

[0028] Step 2: Make a hole at the designed position of the thin beam membrane shell plate 5, pass the top of the double-layer combined sleeve through the hole and pre-embed it in the membrane shell steel mold, and pre-embed UPVC sleeve 10 at the designed position on the thin beam membrane shell plate 5.

[0029] Step 3: Pre-embed the junction box 8 at the water point, and glue the outer flexible plastic sleeve 4 of the double-layer combined sleeve to the interface socket of the junction box 8. The inner PB hose 3 passes through the interface of the junction box 8 and enters the junction box 8. Seal the side plate of the junction box 8 and fix the double-layer combined sleeve.

[0030] Step 4: Pour concrete into the membrane shell steel mold to form the precast composite beam 6, precast building wall 7 and precast bathroom ceiling 11 in the bathroom functional area. Pour the membrane shell concrete and cure it to shape, then remove the membrane shell steel mold.

[0031] Step 5: Remove the steel formwork, connect the inner PB hose 3 to the water supply horizontal pipe 1 suspended from the prefabricated bathroom ceiling slab 11 through the upper conversion connector 2, open the side panel of the junction box 8 at the water point, connect and fix the inner PB hose 3 to the faucet or angle valve through the lower conversion connector 9, and complete the concealed installation of the water supply pipe in the bathroom functional area.

[0032] During the water supply pipe installation process in the bathroom functional area, the concealed installation of the water supply pipes is completed before the concrete pouring of the modular building. Specifically, a membrane-shell steel mold is used to enclose the modular building's pouring cavity. An outer flexible plastic sleeve 4 and an inner PB flexible hose 3 are assembled to form a double-layer combined sleeve. This double-layer combined sleeve is pre-embedded within the membrane-shell steel mold. The top of the double-layer combined sleeve extends beyond the thin beam membrane plate 5, and the bottom connects to the junction box 8 at the water supply point. The junction box 8 is fixed to the wall reinforcement with steel wire. The operating surface is flush with the vertical steel mold surface. When the formwork is closed, it fits tightly with the steel formwork. After the steel formwork is closed, the membrane shell is poured in one go. The membrane shell steel formwork is removed, and the excess outer flexible plastic sleeve 4 extending from the top is cut off. The inner PB hose 3 is connected to the water supply horizontal pipe 1 through the upper conversion connector 2, so that the water supply pipe can be installed inside the thin beam membrane. During later maintenance, it is easy to cut off the inner PB hose 3 extending from the ceiling, open the tile at the junction box 8, pull out the inner PB hose 3 from the junction box 8, replace the inner PB hose 3, and reconnect it to the water supply horizontal pipe 1 through the straight connector, so that maintenance can be carried out conveniently.

[0033] The inner PB flexible hose 3 with an outer flexible plastic sleeve 4 is concealed within the cast-in-place beam and thick wall membrane. This encapsulates the inner PB flexible hose 3 within the pre-embedded outer flexible plastic sleeve 4, providing excellent protection for the inner PB flexible hose 3. The integrated casting facilitates construction, reduces the cost of thickening the decorative surface layer, and saves indoor space, construction costs, and materials. At the water supply point, a pre-embedded junction box 8 is used to connect with the inner PB flexible hose 3. During later pipeline maintenance, the inner PB flexible hose 3 can be pulled out from the outer flexible plastic sleeve 4, facilitating pipe installation and maintenance and reducing the need for subsequent wall excavation.

[0034] In step two, the thin beam membrane shell 5 is used as the steel formwork for the cast-in-place composite beam 13. During the assembly of the modular concrete building on the construction site, the cast-in-place composite beam 13 is integrally cast on the precast composite beam 6 so that the thin beam membrane shell 5 can be used as the side formwork for the subsequent construction of the cast-in-place composite beam 13. The formwork is stable and reliable, and the thin beam membrane shell 5 is easy to position the direction of the outer flexible plastic sleeve 4.

[0035] In step two, the thickness of the thin beam membrane shell 5 is 30mm, and the thickness of the cast-in-place composite beam 13 is 200mm. When assembling the modular building on the upper and lower floors, it is convenient to cast the cast-in-place composite beam 13 on the prefabricated composite beam 6. The operation is convenient, so that the sum of the thicknesses of the thin beam membrane shell 5 and the cast-in-place composite beam 13 meets the thickness requirements of the prefabricated building wall 7.

[0036] In step two, a UPVC sleeve 10 of model De50 is pre-embedded on the thin beam membrane shell 5. The two ends of the UPVC sleeve 10 are flush with the two sides of the thin beam membrane shell 5, and a cavity is formed in the middle. The UPVC sleeve 10 is used for double-layer combined sleeves to extend from the position of the thin beam membrane shell 5 into the prefabricated toilet ceiling slab 11.

[0037] In step four, the thickness of the precast composite beam 6 and the precast building wall 7 is 230mm, which meets the requirements for the thickness of the concealed water supply pipe of the thin wall membrane in modular buildings.

[0038] After the inner PB hose 3 is connected to the water supply horizontal pipe 1 in step five, a bathroom ceiling 12 is installed below the prefabricated bathroom ceiling slab 11. One side panel of the bathroom ceiling 12 is fixedly connected to the prefabricated composite beam 6, and the water supply horizontal pipe 1 is encapsulated in the cavity between the prefabricated bathroom ceiling slab 11 and the bathroom ceiling 12. During maintenance, the bathroom ceiling 12 can be removed to expose the inner PB hose 3 connected to the water supply horizontal pipe 1, which is convenient for inspection, replacement and handling, and easy to operate.

[0039] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A method for concealed installation of water supply pipes in a thin-walled membrane structure of a modular concrete building, characterized in that, Includes the following steps: Step 1: Prepare the inner PB hose (3) and the outer flexible plastic sleeve (4) according to the design length requirements. The inner diameter of the outer flexible plastic sleeve (4) is larger than the outer diameter of the inner PB hose (3). Insert the inner PB hose (3) into the outer flexible plastic sleeve (4) to form a double-layer combined sleeve. Step 2: Make a hole at the designed position of the thin beam membrane shell plate (5), pass the top of the double-layer combined sleeve through the hole and embed it in the membrane shell steel mold, and embed the UPVC sleeve (10) at the designed position on the thin beam membrane shell plate (5). Step 3: Pre-embed the connection box (8) at the water point, and glue the outer flexible plastic sleeve (4) of the double-layer combined sleeve to the interface of the connection box (8). The inner PB hose (3) passes through the interface of the connection box (8) and enters the connection box (8). Seal the side plate of the connection box (8) and fix the double-layer combined sleeve. Step 4: Pour concrete into the membrane shell steel mold to form the precast composite beam (6), precast building wall (7) and precast bathroom roof slab (11) in the bathroom functional area. Pour the membrane shell concrete and cure it to form the shape. Then remove the membrane shell steel mold. Step 5: Remove the steel formwork, connect the inner PB hose (3) to the water supply horizontal pipe (1) hanging on the prefabricated bathroom ceiling (11) through the upper conversion joint (2), open the side panel of the connection box (8) at the water point, connect the inner PB hose (3) to the faucet or angle valve through the lower conversion joint (9) and fix it to complete the concealed installation of the water supply pipe in the bathroom functional area. In step two, the thin beam membrane shell plate (5) is used for the steel formwork of the cast-in-place composite beam (13). During the assembly of the concrete modular building at the construction site, the cast-in-place composite beam (13) is integrally cast on the precast composite beam (6).

2. A method of installing a water service pipe in a concrete modular building thin wall according to claim 1, wherein In step two, the thickness of the thin beam membrane shell plate (5) is 30mm, and the thickness of the cast-in-place composite beam (13) is 200mm.

3. A method of installing a water service pipe in a concrete modular building thin wall according to claim 1, wherein In step two, a UPVC sleeve (10) of model De50 is pre-embedded on the thin beam membrane shell plate (5). The outer flexible plastic sleeve (4) passes through the UPVC sleeve (10) and enters the prefabricated bathroom ceiling plate (11).

4. The method of claim 1, wherein the method further comprises: In step four, the thickness of the precast composite beam (6) and the precast building wall (7) is 230mm.

5. The method for concealed installation of water supply pipes in a thin-walled membrane structure for modular concrete buildings according to claim 1, characterized in that, After the inner PB hose (3) and the water supply horizontal pipe (1) are connected in step five, a bathroom ceiling (12) is set below the prefabricated bathroom top plate (11). A prefabricated composite beam (6) is fixedly connected to one side plate end of the bathroom ceiling (12), and the water supply horizontal pipe (1) is encapsulated in the cavity between the prefabricated bathroom top plate (11) and the bathroom ceiling (12).

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