Integrated flue aluminum formwork system for residential building and construction method of integrated flue aluminum formwork system

Abstract

The invention belongs to the field of building structure construction, and particularly relates to an integrated flue aluminum formwork system for a residential building and a construction method of the integrated flue aluminum formwork system. Comprising an inner formwork system, an outer formwork system arranged on one side of the inner formwork system, a fastening system arranged at one end of the outer formwork system, a supporting system arranged at one end of the fastening system, a shear wall arranged at one end of the inner formwork system and a floor slab arranged at the bottom of the shear wall, and the inner formwork system comprises a first C groove and first panels arranged at one end and one side of the first C groove; according to the integrated flue, flue gas can be exhausted more rapidly and directly, the residence time of the flue gas in a room is greatly shortened, the integrated flue is tightly combined with a building main body structure, the stability and safety of the integrated flue are remarkably improved, potential safety hazards possibly caused by unstable installation or material problems of a traditional flue are effectively avoided, and the integrated flue is suitable for popularization and application. And a safer living environment is provided for residents.

Description

Technical Field

[0001] The invention belongs to the field of building structure construction, in particular to an integrated flue aluminum template system for residential buildings and a construction method thereof. Background Art

[0002] As a key component in modern residential buildings, the smoke exhaust system is designed to improve smoke exhaust efficiency, save costs and enhance the overall safety of the building. At present, as a commonly used smoke exhaust system, finished flues have some advantages, but also have many challenges and limitations. Finished flues are usually produced based on standardized designs and sizes, and their flexibility and adaptability are obviously insufficient. Finished flues are large in size and heavy in weight, which not only increases the complexity and cost during transportation, but also may increase the risk of damage to the flue during transportation. The connection method of finished flues usually uses threaded steel as interlayer load-bearing members, and the contact parts of the upper and lower flues are fully coated with polymer cement mortar to enhance the sealing of the connection. However, polymer cement mortar will be affected by environmental factors such as temperature changes and humidity changes during long-term use, causing the mortar to age or fail. This aging or failure will affect the sealing effect of the connection, and then affect the performance and safety of the entire smoke exhaust system. In addition, although finished flues have lower costs in the early stages of production and installation, during long-term use, the difficulty and cost of maintenance and repair will increase the overall expenditure.

[0003] To solve the above problems, the present invention proposes an integrated flue aluminum formwork system for residential buildings and its construction technology. The aluminum formwork system is used to cast the flue and the main structure in place at one time. The integrated flue formed by casting can greatly improve the smoke exhaust efficiency of the kitchen, significantly reduce the residence time of smoke in the room, and improve the safety of the building. In addition, the integrated flue has excellent sealing and high temperature resistance, effectively avoids cross-odor and fire risks, and provides residents with a healthier and safer living environment. The construction technology of the integrated flue optimizes the traditional construction process, eliminates additional construction steps and materials, greatly shortens the construction time and reduces costs, and provides a more efficient and environmentally friendly solution for modern buildings. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: An integrated flue aluminum formwork system for residential buildings described in the present invention includes an inner formwork system, an outer formwork system arranged on one side of the inner formwork system, a fastening system arranged at one end of the outer formwork system, a support system arranged at one end of the fastening system, a shear wall arranged at one end of the inner formwork system, and a floor slab arranged at the bottom of the shear wall;

[0006] The inner formwork system includes a first C-channel, first panels arranged at one end and one side of the first C-channel, and a plurality of first pins evenly fixed on the surface of the first C-channel. The first C-channel also includes a plurality of first L-shaped stiffeners longitudinally welded inside the first C-channel and a plurality of first pin holes opened on the left and right sides of the first C-channel. The two ends of the first C-channel and the first panels are fixed to the surfaces of the shear wall and the floor slab.

[0007] Preferably, the first panel further includes a plurality of transverse stiffeners longitudinally welded inside the first panel, steel sheets welded to the transverse stiffeners, and a plurality of second pin holes opened on the left and right sides of the first panel. Threaded holes are opened on the steel sheets, and the second pin holes are the same size as and opposite in position to the first pin holes.

[0008] Preferably, the outer formwork system includes a second C-channel, second panels arranged on one side of the second C-channel, and a plurality of second pins fixed to the second panels. The second C-channel includes a plurality of second L-shaped stiffeners longitudinally welded inside the second C-channel and a plurality of third pin holes opened on the left and right sides of the second C-channel. The second panel further includes a plurality of vertical stiffeners transversely welded inside the second panel, a plurality of loop stiffeners longitudinally welded to the vertical stiffeners, and a plurality of fourth pin holes opened on the left and right sides of the second panel. The two ends of the loop stiffeners are welded to the left and right sides of the second panel, and the fourth pin holes are the same size as and opposite in position to the third pin holes.

[0009] Preferably, the fastening system includes transverse backing ribs, a first pair of tie bolts inserted between two adjacent positions of the transverse backing ribs, and a second pair of tie bolts inserted at a position on one side of the adjacent first pair of tie bolts on the transverse backing ribs. The transverse backing ribs are longitudinally distributed and closely attached to the second C-channel and the second panels. The first pair of tie bolts includes a first tie bolt rod, a first gasket closely attached to the transverse backing ribs, and a first nut threadedly connected to the surface of the first tie bolt rod.

[0010] Preferably, the second pair of tie bolts includes a second tie bolt rod, a first nut closely attached to the surface of the transverse backing ribs, and a second nut threadedly connected to the second tie bolt rod.

[0011] Preferably, the support system includes vertical backing ribs, a third pair of tie bolts inserted between the two vertical backing ribs, a diagonal brace support fixed to the surface of the floor slab, and a diagonal brace rod fixed between the vertical backing ribs and the diagonal brace support. The third pair of tie bolts includes a third tie bolt rod, third nuts threadedly connected to both ends of the surface, and a third gasket closely attached to the surface of the vertical backing rib.

[0012] Preferably, it further includes a reinforcement system provided between diagonal brace supports at two adjacent positions. The reinforcement system includes a collar fixed to the outer peripheral surface of the diagonal brace support, a support ring rod fixed to the surface of one set of the collars, a threaded barrel fixed to the other set of the collars, a spring telescopic rod fixed to the surface of the diagonal brace support at the top of the collar, and a fourth pair of tie bolts provided on one side of the threaded barrel. One end of one set of the spring telescopic rods is fixed to the surface of the threaded barrel at an adjacent position, and one end of the other set of the spring telescopic rods is fixed to the surface of the support ring rod at an adjacent position. The fourth pair of tie bolts includes a fourth tie bolt rod threadedly connected to the inner wall of the threaded barrel and fourth nuts threadedly connected to both sides of the outer peripheral surface of the fourth tie bolt rod.

[0013] A construction method for an integrated flue for residential buildings, which uses the above-mentioned integrated flue aluminum formwork system for residential buildings, includes the following steps:

[0014] S1: Prefabricate the first C-groove, the first panel, the first pin, the second C-groove, the second panel, the second pin, the transverse backing rib, the first pair of tie bolts, the second pair of tie bolts, the vertical backing rib, the third pair of tie bolts, the diagonal brace support, and the diagonal brace rod;

[0015] S2: Apply a release agent to the surfaces of the first C-groove, the first panel, the second C-groove, and the second panel to prevent the concrete from sticking to the aluminum form surface;

[0016] S3: Pass the first pin through the first pin hole and the pin hole, and lock the first pin to tightly connect the first C-groove and the first panel to prevent displacement or deformation during the concrete pouring process. Place the inner formwork system accurately in the predetermined position, and use a level and a plumb bob to check to ensure that the level and verticality of the inner formwork system meet the design standards. After completing the positioning of the inner formwork system, temporarily reinforce the inner formwork system to prevent it from toppling during subsequent construction;

[0017] S4: Arrange and tie the steel bars according to the construction drawings to ensure that the arrangement, spacing, and fixing method of the steel bars comply with the specifications;

[0018] S5: Pass the second pin through the third pin hole and the fourth pin hole, and lock the second pin to tightly connect the second C-groove and the second panel to prevent deviation during the concrete pouring process;

[0019] S6: Pass the first pair of tie rods through the first gasket, the horizontal backing beam, and the second panel, and tighten the first nuts to generate a fastening force between the horizontal backing beam and the second C-channel and the second panel. Pass the second pair of tie rods through the second gasket, the horizontal backing beam, the second panel, the first panel, and the steel sheet, and tighten the second nuts to generate a fastening force between the horizontal backing beam and the first panel and the second panel;

[0020] S7: Pass the third pair of tie rods through the third gasket, the vertical backing beam, and the second panel, and tighten the third nuts to generate a fastening force between the vertical backing beam and the horizontal backing beam. Fix the diagonal brace support to the floor slab, and fixedly connect both ends of the diagonal brace rod to the vertical backing beam and the diagonal brace support respectively. Rotate the fourth pair of tie rods so that they pass through the support ring rod, and turn the fourth nuts on both sides of the outer peripheral surface of the fourth pair of tie rods so that the fourth nuts clamp the ring rod;

[0021] S8: Pour the concrete evenly into the aluminum formwork cavity, pay attention to pouring in layers and use a vibrator to remove air bubbles;

[0022] S9: After the concrete has set and hardened, remove the inner formwork system, the support system, the fastening system, and the outer formwork system in sequence.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The integrated flue aluminum formwork system proposed by the present invention enables the flue and the main structure to be cast in place in one go, significantly improving the overall sealing of the flue, effectively reducing the possibility of flue gas leakage, ensuring that the flue gas can be completely discharged, reducing the impact on the indoor air quality of the building. The integrated flue allows the flue gas to be discharged more quickly and directly, greatly reducing the residence time of the flue gas indoors. The integrated flue is closely combined with the building main structure, significantly enhancing its stability and safety, effectively avoiding potential safety hazards that may be caused by unstable installation or material problems of traditional flues, and providing a safer living environment for residents.

[0025] 2. In the integrated flue aluminum formwork system proposed by the present invention, the design and construction of the integrated flue are carried out synchronously with the construction of the main structure. This simplified construction technology greatly shortens the construction time, reduces rework and adjustment caused by installation problems, and thus reduces the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 is a construction schematic diagram of the integrated flue of the present invention;

[0028] Figure 2 is a schematic diagram of the inner formwork system of the integrated flue of the present invention;

[0029] Figure 3 Schematic diagram of the integrated flue outer mold system of the present invention;

[0030] Figure 4 Schematic diagram of the integrated flue fastening system of the present invention;

[0031] Figure 5 Schematic diagram of the integrated flue support system of the present invention;

[0032] Figure 6 Schematic diagram of the three-dimensional structure of the local structure in the present invention;

[0033] Figure 7 Flow chart of the construction method of the present invention.

[0034] In the figure: 1 Inner mold system; 1.1 First C groove; 1.1.1 First L-shaped stiffening rib; 1.1.2 First pin hole; 1.2 First panel; 1.2.1 Transverse stiffening rib; 1.2.2 Steel sheet; 1.2.2.1 Threaded hole; 1.2.3 Second pin hole; 1.3 First pin;

[0035] 2 Outer mold system; 2.1 Second C groove; 2.1.1 Second L-shaped stiffening rib; 2.1.2 Third pin hole; 2.2 Second panel; 2.2.1 Vertical stiffening rib; 2.2.2 Return-shaped stiffening rib; 2.2.3 Fourth pin hole; 2.3 Second pin;

[0036] 3 Fastening system; 3.1 Transverse backstrap; 3.2 First pair of tension bolts; 3.2.1 First tension screw; 3.2.2 First gasket; 3.2.3 First nut; 3.3 Second pair of tension bolts; 3.3.1 Second tension screw; 3.3.2 Second gasket; 3.3.3 Second nut;

[0037] 4 Support system; 4.1 Vertical backstrap; 4.2 Third pair of tension bolts; 4.2.1 Third tension screw; 4.2.2 Third gasket; 4.2.3 Third nut; 4.3 Diagonal support seat; 4.4 Diagonal support rod;

[0038] 5 Shear wall;

[0039] 6 Floor slab;

[0040] 7 Reinforcement system; 7.1 Sleeve ring; 7.2 Support ring rod; 7.3 Threaded barrel; 7.4 Fourth pair of tension bolts; 7.4.1 Fourth tension screw; 7.4.2 Fourth nut; 7.5 Spring telescopic rod. Specific embodiments

[0041] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0042] Example 1:

[0043] As Figures 1 to 6 shown, an integrated flue aluminum formwork system for residential buildings according to an embodiment of the present invention includes an inner formwork system 1, an outer formwork system 2 provided on one side of the inner formwork system 1, a fastening system 3 provided at one end of the outer formwork system 2, a support system 4 provided at one end of the fastening system 3, a shear wall 5 provided at one end of the inner formwork system 1, and a floor slab 6 provided at the bottom of the shear wall 5;

[0044] The inner formwork system 1 includes a first C-channel 1.1, a first panel 1.2 provided at one end and one side of the first C-channel 1.1, and a plurality of first pins 1.3 uniformly fixed on the surface of the first C-channel 1.1. The first C-channel 1.1 further includes a plurality of first L-shaped stiffeners 1.1.1 longitudinally distributed and welded to the inner side of the first C-channel 1.1, and a plurality of first pin holes 1.1.2 opened on the left and right sides of the first C-channel 1.1. Both ends of the first C-channel 1.1 and the first panel 1.2 are fixed to the surfaces of the shear wall 5 and the floor slab 6.

[0045] The first panel 1.2 further includes a plurality of transverse stiffeners 1.2.1 longitudinally distributed and welded to the inner side of the first panel 1.2, steel sheets 1.2.2 welded to the transverse stiffeners 1.2.1, and a plurality of second pin holes 1.2.3 opened on the left and right sides of the first panel 1.2. Threaded holes 1.2.2.1 are opened on the steel sheets 1.2.2. The second pin holes 1.2.3 are the same size as and opposite in position to the first pin holes 1.1.2. The first pins 1.3 pass through the first pin holes 1.1.2 and the second pin holes 1.2.3 and lock the first pins 1.3. The first C-channel 1.1 and the first panel 1.2 are tightly connected by the first pins 1.3.

[0046] The outer formwork system 2 includes a second C-channel 2.1, a second panel 2.2 provided on one side of the second C-channel 2.1, and a plurality of second pins 2.3 fixed to the second panel 2.2. The second C-channel 2.1 includes a plurality of second L-shaped stiffeners 2.1.1 longitudinally distributed and welded to the inner side of the second C-channel 2.1, and a plurality of third pin holes 2.1.2 opened on the left and right sides of the second C-channel 2.1. The second panel 2.2 further includes a plurality of vertical stiffeners 2.2.1 transversely distributed and welded to the inner side of the second panel 2.2, a plurality of loop stiffeners 2.2.2 longitudinally distributed and welded to the vertical stiffeners 2.2.1, and a plurality of fourth pin holes 2.2.3 opened on the left and right sides of the second panel 2.2. Both ends of the loop stiffeners 2.2.2 are welded to the left and right sides of the second panel 2.2. The fourth pin holes 2.2.3 are the same size as and opposite in position to the third pin holes 2.1.2. The second pins 2.3 pass through the third pin holes 2.1.2 and the fourth pin holes 2.2.3 and lock the second pins 2.3. The second C-channel 2.1 and the second panel 2.2 are tightly connected through the fourth pin holes 2.2.3.

[0047] The fastening system 3 includes a transverse back brace 3.1, a first pair of tie bolts 3.2 inserted between two adjacent transverse back braces 3.1, and a second pair of tie bolts 3.3 inserted at a position on one side of the first pair of tie bolts 3.2 at adjacent positions of the transverse back brace 3.1. The transverse back brace 3.1 is longitudinally distributed and closely attached to the second C-channel 2.1 and the second panel 2.2. The first pair of tie bolts 3.2 includes a first pair of tie bolts 3.2.1, a first gasket 3.2.2 closely attached to the transverse back brace 3.1, and a first nut 3.2.3 threadedly connected to the surface of the first pair of tie bolts 3.2.1. The first pair of tie bolts 3.2.1 passes through the first nut 3.2.3, the transverse back brace 3.1, and the second panel 2.2, and the first nut 3.2.3 is tightened to generate a fastening force between the transverse back brace 3.1 and the second C-channel 2.1 and the second panel 2.2.

[0048] The second pair of tie bolts 3.3 includes a second pair of tie bolts 3.3.1, a first nut 3.3.2 closely attached to the surface of the transverse back brace 3.1, and a second nut 3.3.3 threadedly connected to the second pair of tie bolts 3.3.1. The second pair of tie bolts 3.3.1 passes through the first nut 3.3.2, the transverse back brace 3.1, the second panel 2.2, the first panel 1.2, and the steel sheet 1.2.2, and the second nut 3.3.3 is tightened to generate a fastening force between the transverse back brace 3.1 and the first panel 1.2 and the second panel 2.2.

[0049] The support system 4 includes a vertical back brace 4.1, a third pair of tie bolts 4.2 inserted between two vertical back braces 4.1, a diagonal brace support 4.3 fixed to the surface of the floor slab 6, and a diagonal brace 4.4 fixed between the vertical back brace 4.1 and the diagonal brace support 4.3. The third pair of tie bolts 4.2 includes a third pair of tie bolts 4.2.1, third nuts 4.2.3 threadedly connected to both ends of the surface of 4.2.1, and a third gasket 4.2.2 closely attached to the surface of the vertical back brace 4.1. The third pair of tie bolts 4.2.1 passes through the third gasket 4.2.2, the vertical back brace 4.1, and the second panel 2.2, and the third nuts 4.2.3 are tightened to generate a fastening force between the vertical back brace 4.1 and the transverse back brace 3.1.

[0050] Such as Figures 1 to 6As shown in the figure, it further includes a reinforcement system disposed between two adjacent diagonal bracing supports 4.3. The reinforcement system includes a collar 7.1 fixed to the outer peripheral surface of the diagonal bracing support 4.3, a support ring rod 7.2 fixed to the surface of one group of collars 7.1, a threaded barrel 7.3 fixed to the other group of collars 7.1, a spring telescopic rod 7.5 fixed to the surface of the diagonal bracing support 4.3 at the top of the collar 7.1, and a fourth pair of tension bolts 7.4 disposed on one side of the threaded barrel 7.3. One end of one group of spring telescopic rods 7.5 is fixed to the surface of the adjacent threaded barrel 7.3, and one end of the other group of spring telescopic rods 7.5 is fixed to the surface of the adjacent support ring rod 7.2. The fourth pair of tension bolts 7.4 includes a fourth pair of tension screw rods 7.4.1 threadedly connected to the inner wall of the threaded barrel 7.3 and fourth nuts 7.4.2 threadedly connected to both sides of the outer peripheral surface of the fourth pair of tension screw rods 7.4.1. The fourth pair of tension screw rods 7.4.1 is slidably connected to the support ring rod 7.2. After the diagonal bracing support 4.3 is installed, rotate the fourth pair of tension screw rods 7.4.1 to make it pass through the support ring rod 7.2, and rotate the fourth nuts 7.4.2 on both sides of the outer peripheral surface of the fourth pair of tension screw rods 7.4.1 so that the fourth nuts 7.4.2 clamp the support ring rod 7.2, connecting the two diagonal bracing supports 4.3 to improve their stability, and being able to buffer the diagonal bracing support 4.3 under the action of the spring telescopic rod 7.5.

[0051] Embodiment 2:

[0052] As Figure 7 shown, the construction method of the present invention includes the following steps:

[0053] S1: Prefabricate the first C-groove 1.1, the first panel 1.2, the first pin 1.3, the second C-groove 2.1, the second panel 2.2, the second pin 2.3, the transverse back brace 3.1, the first pair of tension bolts 3.2, the second pair of tension bolts 3.3, the vertical back brace 4.1, the third pair of tension bolts 4.2, the diagonal bracing support 4.3 and the diagonal bracing rod 4.4.

[0054] S2: Apply a release agent to the surfaces of the first C-groove 1.1, the first panel 1.2, the second C-groove 2.1 and the second panel 2.2 to prevent the concrete from sticking to the surface of the aluminum formwork.

[0055] S3: Pass the first pin 1.3 through the first pin hole 1.1.2 and the pin hole 1.2.3, and lock the first pin 1.3 to tightly connect the first C-groove 1.1 and the first panel 1.2 to prevent displacement or deformation during the concrete pouring process. Place the inner formwork system 1 accurately at the predetermined position, and use a level and a plumb bob to check to ensure that the level and verticality of the inner formwork system 1 meet the design standards. After the positioning of the inner formwork system 1 is completed, temporarily reinforce the inner formwork system 1 to prevent it from tipping over during subsequent construction.

[0056] S4: Arrange and tie the steel bars according to the construction drawings to ensure that the arrangement, spacing and fixing method of the steel bars comply with the specifications.

[0057] S5: Pass the second pin 2.3 through the third pin hole 2.1.2 and the fourth pin hole 2.2.3, and lock the second pin 2.3 to tightly connect the second C-groove 2.1 and the second panel 2.2 to prevent deviation during the concrete pouring process.

[0058] S6: Pass the first pair of tie bolts 3.2.1 through the first gasket 3.2.2, the transverse backing 3.1 and the second panel 2.2, and tighten the first nut 3.2.3 to generate a fastening force between the transverse backing 3.1, the second C-groove 2.1 and the second panel 2.2. Pass the second pair of tie bolts 3.3.1 through the second gasket 3.3.2, the transverse backing 3.1, the second panel 2.2, the first panel 1.2 and the steel sheet 1.2.2, and tighten the second nut 3.3.3 to generate a fastening force between the transverse backing 3.1, the first panel 1.2 and the second panel 2.2.

[0059] S7: Pass the third pair of tie bolts 4.2.1 through the third gasket 4.2.2, the vertical backing 4.1 and the second panel 2.2, and tighten the third nut 4.2.3 to generate a fastening force between the vertical backing 4.1 and the transverse backing 3.1. Fix the diagonal support 4.3 to the floor slab 6, fix the two ends of the diagonal strut 4.4 to the vertical backing 4.1 and the diagonal support 4.3 respectively, and rotate the fourth pair of tie bolts 7.4.1 to pass it through the support ring bar 7.2, and turn the fourth nuts 7.4.2 on both sides of the outer peripheral surface of the fourth pair of tie bolts 7.4.1 so that the fourth nuts 7.4.2 clamp the ring bar 7.2.

[0060] S8: Pour the concrete evenly into the aluminum formwork cavity, pay attention to pouring in layers and use a vibrator to remove the air bubbles.

[0061] S9: After the concrete sets and hardens, remove the inner formwork system 1, the support system 4, the fastening system 3 and the outer formwork system 2 in sequence.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated flue aluminum formwork system for residential buildings, characterized in that: It includes an inner mold system (1), an outer mold system (2) arranged on one side of the inner mold system (1), a fastening system (3) arranged at one end of the outer mold system (2), a support system (4) arranged at one end of the fastening system (3), a shear wall (5) arranged at one end of the inner mold system (1), and a floor slab (6) arranged at the bottom of the shear wall (5); The inner mold system (1) includes a first C-channel (1.1), a first panel (1.2) arranged at one end and one side of the first C-channel (1.1), and a plurality of first pins (1.3) evenly fixed on the surface of the first C-channel (1.1). The first C-channel (1.1) further includes a plurality of first L-shaped stiffeners (1.1.1) longitudinally distributed and welded to the inner side of the first C-channel (1.1), and a plurality of first pin holes (1.1.2) opened on the left and right sides of the first C-channel (1.1). The two ends of the first C-channel (1.1) and the first panel (1.2) are fixed to the surfaces of the shear wall (5) and the floor slab (6).

2. The integrated flue aluminum formwork system for residential buildings according to claim 1, characterized in that: The first panel (1.2) further includes a plurality of transverse stiffeners (1.2.1) longitudinally distributed and welded to the inner side of the first panel (1.2), steel sheets (1.2.2) welded to the transverse stiffeners (1.2.1), and a plurality of second pin holes (1.2.3) opened on the left and right sides of the first panel (1.2). Threaded holes (1.2.2.1) are opened on the steel sheets (1.2.2), and the second pin holes (1.2.3) are the same size as and opposite in position to the first pin holes (1.1.2).

3. The integrated flue aluminum formwork system for residential buildings according to claim 2, characterized in that: The outer mold system (2) includes a second C-channel (2.1), a second panel (2.2) arranged on one side of the second C-channel (2.1), and a plurality of second pins (2.3) fixed to the second panel (2.2). The second C-channel (2.1) includes a plurality of second L-shaped stiffeners (2.1.1) longitudinally distributed and welded to the inner side of the second C-channel (2.1), and a plurality of third pin holes (2.1.2) opened on the left and right sides of the second C-channel (2.1). The second panel (2.2) further includes a plurality of vertical stiffeners (2.2.1) transversely distributed and welded to the inner side of the second panel (2.2), a plurality of loop stiffeners (2.2.2) longitudinally distributed and welded to the vertical stiffeners (2.2.1), and a plurality of fourth pin holes (2.2.3) opened on the left and right sides of the second panel (2.2). The two ends of the loop stiffeners (2.2.2) are welded to the left and right sides of the second panel (2.2), and the fourth pin holes (2.2.3) are the same size as and opposite in position to the third pin holes (2.1.2).

4. An integrated flue aluminum formwork system for residential buildings according to claim 3, characterized in that: The fastening system (3) includes a transverse back brace (3.1), a first pair of tie bolts (3.2) inserted between two adjacent positions of the transverse back brace (3.1), and a second pair of tie bolts (3.3) inserted at a position on one side of the transverse back brace (3.1) adjacent to the first pair of tie bolts (3.2). The transverse back brace (3.1) is longitudinally distributed and closely attached to the second C-channel (2.1) and the second panel (2.2). The first pair of tie bolts (3.2) includes a first pair of tie bolts (3.2.1), a first gasket (3.2.2) closely attached to the transverse back brace (3.1), and a first nut (3.2.3) threadedly connected to the surface of the first pair of tie bolts (3.2.1).

5. An integrated flue aluminum formwork system for residential buildings according to claim 4, characterized in that: The second pair of tie bolts (3.3) includes a second pair of tie bolts (3.3.1), a first nut (3.3.2) closely attached to the surface of the transverse back brace (3.1), and a second nut (3.3.3) threadedly connected to the second pair of tie bolts (3.3.1).

6. The integrated flue aluminum formwork system for residential buildings according to claim 5, wherein: The support system (4) includes a vertical back brace (4.1), a third pair of tie bolts (4.2) inserted between the two vertical back braces (4.1), a diagonal brace support (4.3) fixed to the surface of the floor slab (6), and a diagonal brace rod (4.4) fixed between the vertical back brace (4.1) and the diagonal brace support (4.3). The third pair of tie bolts (4.2) includes a third pair of tie bolts (4.2.1), third nuts (4.2.3) threadedly connected to both ends of the surface of (4.2.1), and a third gasket (4.2.2) closely attached to the surface of the vertical back brace (4.1).

7. An integrated flue aluminum formwork system for residential buildings according to claim 6, characterized in that: It also includes a reinforcement system provided between two adjacent diagonal brace supports (4.3). The reinforcement system includes a collar (7.1) fixed to the outer peripheral surface of the diagonal brace support (4.3), a support ring rod (7.2) fixed to the surface of one group of the collars (7.1), a threaded cylinder (7.3) fixed to the other group of the collars (7.1), a spring telescopic rod (7.5) fixed to the surface of the diagonal brace support (4.3) at the top of the collar (7.1), and a fourth pair of tie bolts (7.4) provided on one side of the threaded cylinder (7.3). One end of one group of the spring telescopic rods (7.5) is fixed to the surface of the adjacent threaded cylinder (7.3), and one end of the other group of spring telescopic rods (7.5) is fixed to the surface of the adjacent support ring rod (7.2). The fourth pair of tie bolts (7.4) includes a fourth pair of tie bolts (7.4.1) threadedly connected to the inner wall of the threaded cylinder (7.3) and fourth nuts (7.4.2) threadedly connected to both sides of the outer peripheral surface of the fourth pair of tie bolts (7.4.1).

8. A construction method for an integrated flue for residential buildings, which uses the integrated flue aluminum formwork system for residential buildings described in claim 7, characterized in that: It includes the following steps: S1: Prefabricate the first C-groove (1.1), the first panel (1.2), the first pin (1.3), the second C-groove (2.1), the second panel (2.2), the second pin (2.3), the horizontal backstrap (3.1), the first tie bolt (3.2), the second tie bolt (3.3), the vertical backstrap (4.1), the third tie bolt (4.2), the diagonal brace support (4.3) and the diagonal brace rod (4.4); S2: Apply a release agent on the surfaces of the first C-groove (1.1), the first panel (1.2), the second C-groove (2.1) and the second panel (2.2) to prevent concrete from sticking to the surface of the aluminum formwork; S3: Pass the first pin (1.3) through the first pin hole (1.1.2) and the pin hole (1.2.3), and lock the first pin (1.3) to tightly connect the first C-groove (1.1) and the first panel (1.2) to prevent displacement or deformation during the concrete pouring process. Place the inner formwork system (1) accurately at the predetermined position, and use a level and a plumb bob to check to ensure that the level and verticality of the inner formwork system (1) meet the design standards. After positioning the inner formwork system (1), temporarily reinforce the inner formwork system (1) to prevent it from toppling during subsequent construction; S4: Arrange and tie the steel bars according to the construction drawings to ensure that the arrangement, spacing and fixing method of the steel bars comply with the specifications; S5: Pass the second pin (2.3) through the third pin hole (2.1.2) and the fourth pin hole (2.2.3), and lock the second pin (2.3) to tightly connect the second C-groove (2.1) and the second panel (2.2) to prevent deviation during the concrete pouring process; S6: Pass the first tie rod (3.2.1) through the first gasket (3.2.2), the horizontal backstrap (3.1) and the second panel (2.2), and tighten the first nut (3.2.3) to generate a tightening force between the horizontal backstrap (3.1) and the second C-groove (2.1) and the second panel (2.2). Pass the second tie rod (3.3.1) through the second gasket (3.3.2), the horizontal backstrap (3.1), the second panel (2.2), the first panel (1.2) and the steel sheet (1.2.2), and tighten the second nut (3.3.3) to generate a tightening force between the horizontal backstrap (3.1) and the first panel (1.2) and the second panel (2.2); S7: Pass the third tie rod (4.2.1) through the third gasket (4.2.2), the vertical backstrap (4.1) and the second panel (2.2), and tighten the third nut (4.2.3) to generate a tightening force between the vertical backstrap (4.1) and the horizontal backstrap (3.1). Fix the diagonal brace support (4.3) to the floor slab (6), and fixedly connect both ends of the diagonal brace rod (4.4) to the vertical backstrap (4.1) and the diagonal brace support (4.3) respectively. Rotate the fourth tie rod (7.4.1) to pass it through the support ring rod (7.2), and turn the fourth nuts (7.4.2) on both sides of the outer peripheral surface of the fourth tie rod (7.4.1) so that the fourth nuts (7.4.2) clamp the ring rod (7.2); S8: Pour the concrete evenly into the aluminum mold cavity, pay attention to layered pouring and use a vibrator to remove air bubbles; S9: After the concrete has coagulated and hardened, remove the inner mold system (1), support system (4), fastening system (3) and outer mold system (2) in sequence.

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