A precast flue staggered installation construction method

Abstract

The present application relates to a kind of prefabricated flue staggered floor installation construction methods, comprising the following steps: S1: first floor plate is set with subsidence groove;S2: first section prefabricated flue positioning installation;S3: with the adjacent two outer wall surface of first section prefabricated flue as formwork, wall column formwork is built, and another two adjacent outer wall surface is used as formwork to build floor formwork;S4: pouring concrete;S5: second layer construction, and standard section prefabricated flue is installed on first section prefabricated flue;S6: the wall column, floor main structure construction of second layer is completed;S7: in order with standard section prefabricated flue as formwork, the wall column, floor main structure construction of subsequent floor is completed;S8: top layer construction, and top layer prefabricated flue is installed standard section prefabricated flue;S9: the wall column, floor main structure construction of top layer;S10: set up concrete structure of upturning.The wall column and floor that are shaped are directly contacted with the outer wall surface of prefabricated flue, guarantee the close combination of junction, and greatly reduce the occurrence of water leakage phenomenon.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, and in particular relates to a method for staggered installation of prefabricated flues. Background Technology

[0002] After the primary structural construction of a building project is completed, the installation of prefabricated flues in kitchens and bathrooms during the secondary structural work has become a standard construction procedure. This method involves installing the prefabricated flues through pre-reserved openings in the floor slab. After installation, waterproofing of these openings is required, which can easily lead to water leakage at the connection between the prefabricated flue and the floor slab. Furthermore, the gaps between the prefabricated flue and shear walls, masonry walls, and columns cannot be effectively filled, further affecting the waterproofing effect and increasing the amount of rework. Currently, the domestic construction industry mainly addresses these issues by sealing the gaps between the prefabricated flue and the walls / columns, and between the prefabricated flue and the floor slab openings, and by applying waterproof coatings. However, this method has consistently failed to effectively control water leakage in these areas. Summary of the Invention

[0003] The main objective of this invention is to propose a method for the staggered installation of prefabricated flues, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A method for staggered installation of prefabricated flues includes the following steps:

[0006] S1: When constructing the first floor, a recessed groove is made at the location where the flue needs to be installed on the base plate. The length and width of the recessed groove are both larger than the length and width of the first prefabricated flue section by the reserved width.

[0007] S2: Align the first prefabricated flue with the design center line and the recessed groove for positioning and installation. Then, use wooden wedges to temporarily fix the side of the first prefabricated flue in the recessed groove. Finally, hang a line to straighten it. The height of the first prefabricated flue exceeds the first floor height of the first reserved height.

[0008] S3: Use the two adjacent outer walls of the first precast flue as templates to build wall column templates. The two adjacent outer walls are directly used as part of the wall column templates. Use the other two adjacent outer walls as templates to build floor slab templates. The other two adjacent outer walls are directly used as part of the floor slab templates.

[0009] S4: Pour concrete for the walls, columns, and floor slabs. The formed walls, columns, and floor slabs will directly contact the outer wall of the first precast flue. The main structure of the walls, columns, and floor slabs on the first floor will be completed.

[0010] S5: For the second floor construction, the standard prefabricated flue section is installed on the first prefabricated flue section. The length of the standard prefabricated flue section is the same as the floor height. After being installed on the first prefabricated flue section, the height also exceeds the first reserved height of the second floor.

[0011] S6: Repeat steps S3-S4 to complete the construction of the main structure of the walls, columns, and floor slabs on the second floor, using the standard prefabricated flue section as a template.

[0012] S7: Using standard prefabricated flue sections as templates, complete the construction of the main structure of walls, columns, and floor slabs for subsequent floors, except for the top floor.

[0013] S8: Top floor construction, install the top floor prefabricated flue on the standard section prefabricated flue below it, the top floor prefabricated flue exceeds the second reserved height of the top floor;

[0014] S9: Repeat steps S3-S4 to complete the construction of the main structure of the walls, columns, and floor slabs on the top floor, using the prefabricated flue on the top floor as a template.

[0015] S10: An upward-turning concrete structure is set around the second reserved height of the top-floor prefabricated flue that exceeds the top floor height to wrap the top-floor prefabricated flue.

[0016] Preferably, in step S1, the depth of the recessed groove is 2 cm.

[0017] Preferably, in step S1, the reserved width is 20mm.

[0018] Preferably, in step S2, the first reserved height is 300mm.

[0019] Preferably, in step S3, a reinforcing device is placed inside the first prefabricated flue to reinforce the inner wall and enhance the stability of the first prefabricated flue.

[0020] Preferably, in step S3, after the first precast flue and wall column formwork are installed, the verticality and flatness of the wall column formwork and the first precast flue are ensured by setting and adjusting the diagonal braces and main and secondary ribs, so that the joints are tight. After passing the test, upper and lower diagonal braces are added to prevent the wall column formwork from shifting or deforming during the subsequent pouring of wall column concrete.

[0021] Preferably, in step S7, when the building has more than three floors, a threaded steel support needs to be installed every three floors. The threaded steel support runs through the standard section of the prefabricated flue, and its two ends are firmly tied to the wall column reinforcement and the floor slab reinforcement, respectively. The threaded steel support is cast together with the wall column and the floor slab.

[0022] Preferably, the diameter of the threaded steel support is φ14-φ18, and the bearing length at both ends is not less than 50mm.

[0023] Preferably, in step S8, the second reserved height is 500mm, that is, it extends 500mm above the roof.

[0024] Preferably, in step S10, after all the prefabricated flues and main structures have been constructed, the wooden wedges in the sunken grooves are removed, and mortar is used to smooth and polish the area around the first prefabricated flue.

[0025] This invention provides a method for staggered installation of prefabricated flues, which has the following beneficial effects;

[0026] The wall and column formwork is built using the two adjacent outer walls of the precast flue as templates, and the floor slab formwork is built using the other two adjacent outer walls as templates. The construction of the main structure of the wall, column, and floor slab is carried out simultaneously with the installation of the precast flue. The formed wall, column, and floor slab directly contact the outer wall of the precast flue, ensuring a tight connection between the wall, column, floor slab, and precast flue, greatly reducing the occurrence of water leakage at the connection. The height of the precast flue on each floor is higher than the floor height. The precast flue adopts a "staggered installation" method, which facilitates the installation of templates. In the later stages of construction, it is not necessary to seal or waterproof the gaps between the precast flue and the wall / column or the precast flue and the floor slab, which also reduces the construction period of the precast flue installation, as well as the amount of templates used and the labor cost of precast flue installation. Attached Figure Description

[0027] Figure 1 This is a front view of the first layer of construction in this invention;

[0028] Figure 2 This is a top view of the first layer of construction in this invention;

[0029] Figure 3 This is a schematic diagram of the wall column formwork construction structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the reinforcement device of the present invention;

[0031] Figure 5 This is a schematic diagram of the top-level construction structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the installation structure of the threaded steel support of the present invention.

[0033] In the diagram: 1. Base plate; 2. Recessed groove; 3. First precast flue section; 31. First reserved height; 4. Wall and column formwork; 5. Reinforcing device; 6. Main rib; 7. Secondary rib; 8. Wall and column; 9. Floor slab; 10. Standard precast flue section; 11. Threaded steel support; 12. Top-floor precast flue; 121. Second reserved height; 13. Upward-turning concrete structure. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] An embodiment of a method for staggered installation of prefabricated flues includes the following steps:

[0039] S1: As Figure 1-2 As shown, during the construction of the first floor, a recessed groove 2 is made on the base plate 1 at the location where the flue needs to be installed. The recessed groove 2 has a depth of 2cm and its length and width are both larger than the length and width of the first prefabricated flue section 3 by a reserved width of 20mm. The recessed groove 2 facilitates the installation and positioning of the first prefabricated flue section 3.

[0040] S2: Align the first prefabricated flue 3 with the design center line and the recessed groove 2 for positioning and installation. Then, use wooden wedges to temporarily fix the side of the first prefabricated flue 3 in the recessed groove 2. Finally, hang a line to straighten it. The height of the first prefabricated flue 3 exceeds the first floor height of the first reserved height 31, which is 300mm.

[0041] S3: As Figure 3 As shown, the wall column template 4 is built using the two adjacent outer walls of the first prefabricated flue 3 as templates. The two adjacent outer walls are directly used as part of the wall column template 4. The floor slab template is built using the other two adjacent outer walls as templates. The other two adjacent outer walls are directly used as part of the floor slab template.

[0042] like Figure 3-4 As shown, during construction, a reinforcing device 5 is placed inside the first prefabricated flue 3 to reinforce the inner wall. The reinforcing device 5 is a support device disclosed in patent CN202222389967.6 that is easy to support in small spaces. The stability of the first prefabricated flue 3 is enhanced by the reinforcing device 5. The reinforcing device 5 is also used in subsequent construction. The specific structure and operation method are not described in detail here. Please refer to the relevant patent content.

[0043] After the first precast flue 3 and the wall column formwork 4 are installed, the verticality and flatness of the wall column formwork 4 and the first precast flue 3 are ensured by setting and adjusting the diagonal braces and the main ribs 6 and secondary ribs 7, so that the joints are tight. After passing the test, the upper and lower diagonal braces are added to prevent the wall column formwork 4 from shifting or deforming during the subsequent pouring of wall column concrete.

[0044] S4: Pour concrete for the wall columns and floor slabs. The formed wall columns 8 and floor slabs 9 are in direct contact with the outer wall of the first precast flue 3. The main structure of the wall columns 8 and floor slabs 9 on the first floor is completed.

[0045] S5: As Figure 1 , Figure 5 As shown, during the construction of the second floor, the standard prefabricated flue section 10 is installed on the first prefabricated flue section 3. The length of the standard prefabricated flue section 10 is the same as the floor height, and after being installed on the first prefabricated flue section 3, its height also exceeds the first reserved height 31 of the second floor height.

[0046] S6: Repeat steps S3-S4, using the standard prefabricated flue 10 as a template to complete the main structure construction of the second floor's wall columns 8 and floor slab 9.

[0047] S7: Using the standard prefabricated flue 10 as a template, complete the main structural construction of the walls, columns 8, and floor slabs 9 for subsequent floors except the top floor.

[0048] like Figure 5-6As shown, when the building has more than three floors, a threaded steel support 11 needs to be installed every three floors. The threaded steel support 11 passes through the standard section of the prefabricated flue 10, and its two ends are firmly tied to the wall column reinforcement and floor slab reinforcement respectively. The threaded steel support 11 is cast together with the wall column 8 and the floor slab 9. The diameter of the threaded steel support 11 is φ14-φ18, and the bearing length at both ends is not less than 50mm. The threaded steel support 11 is used to support the prefabricated flue and enhance the stability of the prefabricated flue.

[0049] S8: As Figure 5 As shown, during the top-floor construction, the top-floor prefabricated flue 12 is installed on the standard section prefabricated flue 10 below it. The top-floor prefabricated flue 12 exceeds the second reserved height 121 of the top floor height. The second reserved height 121 is 500mm, that is, it extends 500mm above the roof. The top-floor prefabricated flue 12 extends directly above the roof. The height of the extension above the roof can be set relatively high to achieve better waterproofing.

[0050] S9: Repeat steps S3-S4 to complete the main structure construction of the top floor wall columns 8 and floor slab 9 using the top floor prefabricated flue 12 as a template.

[0051] S10: An upward-turning concrete structure 13 is set around the second reserved height 121 of the top-floor prefabricated flue 12 that exceeds the top floor height to wrap the top-floor prefabricated flue 12.

[0052] After all the prefabricated flues and main structures are completed, remove the wooden wedges in the sunken groove 2, and smooth and polish the area around the first prefabricated flue 3 with mortar.

[0053] In this invention, the first prefabricated flue 3, the standard prefabricated flue 10, and the top-floor prefabricated flue 12 are all of customized length and are produced according to the specific floor requirements.

[0054] This invention innovatively integrates the construction of the main structure with the installation of prefabricated flues. The wall and column formwork 4 is built using two adjacent outer walls of the prefabricated flue as templates, and the floor slab formwork is built using two other adjacent outer walls as templates. The construction of the main structure (walls, columns, and floor slabs) is carried out simultaneously with the installation of the prefabricated flue. The formed wall and column 8 and floor slab 9 directly contact the outer wall of the prefabricated flue, ensuring a tight connection between them and the flue, greatly reducing water leakage. The height of the prefabricated flue on each floor is higher than the floor height. The prefabricated flue adopts a "staggered installation" method, which facilitates the installation of templates. In the later stages of construction, it eliminates the need for sealing and waterproofing the gaps between the prefabricated flue and the wall / column 8, and between the prefabricated flue and the floor slab 9, thus reducing the construction period, template usage, and labor costs.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for staggered installation of prefabricated flues, characterized in that, Includes the following steps: S1: When constructing the first floor, a recessed groove is made at the location where the flue needs to be installed on the base plate. The length and width of the recessed groove are both larger than the length and width of the first prefabricated flue section by the reserved width. S2: Align the first prefabricated flue with the design center line and the recessed groove for positioning and installation. Then, use wooden wedges to temporarily fix the side of the first prefabricated flue in the recessed groove. Finally, hang a line to straighten it. The height of the first prefabricated flue exceeds the first floor height of the first reserved height. S3: Use the two adjacent outer walls of the first precast flue as templates to build wall column templates. The two adjacent outer walls are directly used as part of the wall column templates. Use the other two adjacent outer walls as templates to build floor slab templates. The other two adjacent outer walls are directly used as part of the floor slab templates. S4: Pour concrete for the walls, columns, and floor slabs. The formed walls, columns, and floor slabs will directly contact the outer wall of the first precast flue. The main structure of the walls, columns, and floor slabs on the first floor will be completed. S5: For the second floor construction, the standard prefabricated flue section is installed on the first prefabricated flue section. The length of the standard prefabricated flue section is the same as the floor height. After being installed on the first prefabricated flue section, the height also exceeds the first reserved height of the second floor. S6: Repeat steps S3-S4 to complete the construction of the main structure of the walls, columns, and floor slabs on the second floor, using the standard prefabricated flue as a template. S7: Using standard prefabricated flue sections as templates, complete the construction of the main structure of walls, columns, and floor slabs for subsequent floors, except for the top floor. S8: Top floor construction, install the top floor prefabricated flue on the standard section prefabricated flue below it, the top floor prefabricated flue exceeds the second reserved height of the top floor; S9: Repeat steps S3-S4 to complete the construction of the main structure of the walls, columns, and floor slabs on the top floor, using the prefabricated flue on the top floor as a template; S10: An upward-turning concrete structure is set around the second reserved height of the top-floor prefabricated flue that exceeds the top floor height to wrap the top-floor prefabricated flue.

2. The prefabricated flue installation method according to claim 1, characterized in that: In step S1, the depth of the recessed groove is 2cm.

3. The prefabricated flue installation method according to claim 1, characterized in that: In step S1, the reserved width is 20mm.

4. The prefabricated flue installation method according to claim 1, characterized in that: In step S2, the first reserved height is 300mm.

5. The prefabricated flue installation method according to claim 1, characterized in that: In step S3, a reinforcement device is placed inside the first prefabricated flue to reinforce the inner wall and enhance the stability of the first prefabricated flue.

6. The prefabricated flue installation method according to claim 1, characterized in that: In step S3, after the first precast flue and wall column formwork are installed, the verticality and flatness of the wall column formwork and the first precast flue are ensured by setting and adjusting the diagonal braces and main and secondary ribs, so that the joints are tight. After passing the test, upper and lower diagonal braces are added to prevent the wall column formwork from shifting or deforming during the subsequent pouring of wall column concrete.

7. The prefabricated flue installation method according to claim 1, characterized in that: In step S7, when the building has more than three floors, a threaded steel support needs to be installed every three floors. The threaded steel support runs through the standard section of the prefabricated flue, and its two ends are firmly tied to the wall column reinforcement and floor slab reinforcement, respectively. The threaded steel support is poured together with the wall column and floor slab.

8. The prefabricated flue installation method according to claim 7, characterized in that: The diameter of the rebar support is φ14-φ18, and the bearing length at both ends is not less than 50mm.

9. The prefabricated flue installation method according to claim 1, characterized in that: In step S8, the second reserved height is 500mm, that is, it extends 500mm above the roof.

10. The prefabricated flue installation method according to claim 1, characterized in that: In step S10, after all the prefabricated flues and main structures have been constructed, the wooden wedges in the sunken grooves are removed, and mortar is used to smooth and polish the area around the first prefabricated flue.

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