Civil air duct and construction method thereof

Abstract

The application discloses a kind of civil air duct and its construction method, including structural floor;Supporting structure, it is arranged in parallel below structural floor;Profiled composite board, fixed on supporting structure;Masonry wall, is built between structural floor and profiled composite board;Air duct mouth, by structural floor, profiled composite board and masonry wall are surrounded and become;Hanging pull component, it is arranged between structural floor and supporting structure and located the outside of air duct mouth.The application uses profiled composite board as air duct bottom plate and uses brick wall as side wall, waveform profiled steel plate in combination floor is both as force member, can simultaneously as pouring formwork, after pouring, it is not necessary to remove;Adopt brick side wall can make structural floor and air duct bottom plate separate pouring, make upper structural floor form removal more convenient, and structural floor and profiled composite board can be poured simultaneously, significantly shorten construction period;Through the setting of hanging pull component, not only can the weight of air duct be supported, but also the overall stability of air duct can be increased.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of civil air duct, and particularly relates to a civil air duct and a construction method thereof. BACKGROUND

[0002] An air duct is an important component of a ventilation system, and mainly plays a role of transferring air, controlling air quality and distributing air volume. From the aspect of component materials, the air duct is mainly divided into a metal air duct, a non-metal composite air duct and a cast-in-place concrete air duct.

[0003] For the construction of the cast-in-place concrete air duct, if a construction method of pouring the concrete air duct first and then pouring the roof concrete is adopted, the construction progress will be affected, and it is difficult to ensure the construction period; if the air duct and the roof are poured with concrete at the same time, not only is the cross construction difficult, but also the formwork in the air duct is not easy to be removed, and the pouring quality of the air duct bottom plate is also difficult to be ensured.

[0004] In view of the above situation, it is necessary to provide a civil air duct and a construction method thereof to solve the above technical problems. SUMMARY

[0005] The present application aims to provide a civil air duct and a construction method thereof to solve the problems of long construction period, great construction difficulty and difficult formwork removal of the cast-in-place concrete air duct proposed in the background.

[0006] To achieve the above-mentioned purpose, the present application provides a civil air duct, comprising:

[0007] a structural floor slab;

[0008] a bearing structure, which is arranged in parallel below the structural floor slab;

[0009] a profiled composite board, which is fixed on the bearing structure;

[0010] a masonry wall, which is built between the structural floor slab and the profiled composite board;

[0011] an air duct opening, which is surrounded by the structural floor slab, the profiled composite board and the masonry wall;

[0012] a hanging and pulling component, which is arranged between the structural floor slab and the bearing structure and located outside the air duct opening.

[0013] Further, the bearing structure comprises:

[0014] at least two H-shaped steel beams, which are arranged at the bottom of the profiled composite board at equal intervals along the direction of the air duct opening;

[0015] at least two angle steels, which are vertically welded between the opposite two H-shaped steel beams.

[0016] Further,

[0017] The profiled composite board comprises:

[0018] The corrugated profiled steel plate is arranged on the H-shaped steel beam and the upper end of the angle steel, and the two side edges thereof are vertically upward to form side plates, the side plates are away from the end of the H-shaped steel beam and form flange platforms for placing hoisting and pulling members;

[0019] The concrete is poured on the corrugated profiled steel plate;

[0020] The stud is vertically welded on the upper flange of the H-shaped steel beam through the corrugation of the corrugated profiled steel plate, and is used for fixing the corrugated profiled steel plate.

[0021] Further, the height of the side plate is higher than the height of the corrugation of the corrugated profiled steel plate; the pouring height of the concrete is lower than the height of the side plate; and the stud is located in the corrugation of the corrugated profiled steel plate and is uniformly arranged along the H-shaped steel beam.

[0022] Further, the masonry wall comprises solid brick walls at both ends of the concrete, the inner side of the solid brick wall is plastered, and the outer side of the solid brick wall is plastered.

[0023] Further, the outer side plaster covers the side plate.

[0024] Further, a set of hoisting components is arranged on each flange platform, and the hoisting components comprise:

[0025] The embedded steel bar is embedded in the structural floor;

[0026] The anchor plate is embedded in the structural floor, and the upper surface thereof is welded with the lower end of the embedded steel bar;

[0027] Two welding plates are welded on the lower end of the anchor plate and the flange platform, respectively;

[0028] The hoisting angle steel is welded on the upper and lower ends of the two welding plates.

[0029] Further, the upper end of the embedded steel bar is outwardly bent by 90° to form an anchor claw.

[0030] Further, the civil air duct further comprises a scaffold for bearing the profiled composite board;

[0031] The scaffold comprises a frame body, the upper end of the frame body is arranged with the H-shaped steel beam, and the H-shaped steel beam and the frame body are connected through a connecting piece;

[0032] The connecting piece comprises a U-shaped screw and a cushion block on the lower flange of the H-shaped steel beam; the U-shaped screw is clamped in the frame body and sequentially passes through the H-shaped steel beam and the cushion block, and then the frame body and the H-shaped steel beam are connected through a nut.

[0033] The construction method of the civil air duct using the civil air duct, specifically comprises the following steps:

[0034] The H-shaped steel beam is fixed on the scaffold through the connecting piece while the formwork of the structural floor is set up;

[0035] The angle steel is vertically fixed between the two opposite H-shaped steel beams to form a load-bearing structure; and the corrugated profiled steel plate is fixed on the load-bearing structure through the bolt;

[0036] The lower end of the embedded steel is welded on the anchor plate, and then the anchor plate is placed in the corresponding structural floor formwork of each flange platform; and the concrete pouring of the structural floor and the profiled composite plate is simultaneously performed;

[0037] After the concrete of the profiled composite plate reaches the strength, the solid brick wall is built along the direction of the air duct opening and closely adheres to the inner side of the side plate of the corrugated profiled steel plate;

[0038] After the concrete of the structural floor reaches the strength, the welding plate is welded on the lower end of the anchor plate and the flange platform respectively, and then the upper and lower ends of the hoisting angle steel are fixed with the welding plate to form the hoisting and pulling component; after the welding is completed, the scaffold is removed to complete the construction of the civil air duct.

[0039] Compared with the prior art, the beneficial effects of the present application are:

[0040] In the present application, the profiled composite plate is used as the air duct bottom plate, and the brick wall is used as the side wall; the profiled steel plate in the composite floor not only serves as a load-bearing component, but also simultaneously serves as a pouring formwork, which does not need to be removed after pouring; the brick wall can separate the pouring of the structural floor and the air duct bottom plate, making the form removal of the upper structural floor more convenient, and the structural floor and the profiled composite plate can be poured simultaneously, significantly shortening the construction period; and the hoisting and pulling component can not only bear the weight of the air duct, but also increase the overall stability of the air duct. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0042] Figure 2 It is a schematic diagram of the load-bearing structure and the profiled composite plate structure of the present application;

[0043] Figure 3 It is a schematic diagram of the load-bearing structure of the present application;

[0044] Figure 4 It is a front view of the present application;

[0045] Figure 5 It is a partial schematic diagram of the connecting piece of the present application.

[0046] Reference signs: 1, structural floor; 2, bearing structure; 21, H-shaped steel beam; 211, flange platform; 22, angle steel; 221, missing corner; 3, profiled composite slab; 31, profiled steel plate; 311, side plate; 32, concrete; 33, stud; 4, masonry wall; 41, solid brick wall; 42, inner side plaster; 43, outer side plaster; 5, hoisting component; 51, embedded steel bar; 52, anchor plate; 53, welding plate; 54, hoisting angle steel; 6, air duct opening; 7, frame body; 8, connecting piece; 81, U-shaped screw rod; 82, cushion block. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0048] The scaffold of the air duct can rely on the scaffold during pouring of the structural floor, see Figure 1 and Figure 4 A civil air duct comprises a structural floor 1, a bearing structure 2, a profiled composite slab 3, a masonry wall 4, a hoisting component 5, and an air duct opening 6.

[0049] Specifically, the bearing structure 2 is arranged in parallel below the structural floor 1; the profiled composite slab 3 is fixed on the bearing structure 2; the masonry wall 4 is built between the structural floor 1 and the profiled composite slab 3; the air duct opening 6 is surrounded by the structural floor 1, the profiled composite slab 3, and the masonry wall 4; and the hoisting component 5 is arranged between the structural floor 1 and the bearing structure 2 and located outside the air duct opening 6.

[0050] It should be noted that the width of the structural floor 1 is greater than the width of the profiled composite slab 3. Thus, the profiled composite slab 3 is placed on the bearing structure 2 to form the bottom plate of the air duct, and the brick masonry wall 4 is used as the side wall, wherein the profiled composite slab 3 in the composite floor serves as a force member and can also serve as a pouring formwork at the same time, and after pouring is completed, it does not need to be removed; using the masonry wall 4 as the side wall can make the structural floor 1 and the air duct bottom plate be poured separately, making it more convenient to remove the upper structural floor, and the structural floor and the profiled composite slab can be poured at the same time, significantly shortening the construction period.

[0051] Referring to Figure 2 , the bearing structure 2 comprises at least two H-shaped steel beams 21 arranged at the bottom of the profiled composite slab 3 in the direction of the air duct opening 6 at equal intervals; a plurality of angle steels 22 are arranged between the opposite two H-shaped steel beams 21, the angle steels 22 are vertically welded between the opposite two H-shaped steel beams 21, and the number of the angle steels 22 is correspondingly arranged according to the number of wave troughs of the corrugated profiled steel plate 31.

[0052] Further, the H-shaped steel beams 21 are conventional H-shaped steel beams in the prior art, which have upper flanges and lower flanges parallel to each other, and webs connecting the upper flanges and the lower flanges. The angle steels 22 are conventional angle steels in the prior art, which are in inverted L shape and are welded to the H-shaped steel beams 21.

[0053] Referring to Figure 3 , the specific welding manner between the H-shaped steel beams 21 and the angle steels 22 is as follows: two H-shaped steel beams 21 are placed in parallel, and the number of the inverted L-shaped angle steels 22 is set according to the number of the wave troughs of the corrugated steel plate 31, that is, the size of the air duct opening 6 determines the width of the corrugated steel plate 31, the width of the corrugated steel plate 31 determines the number of the wave troughs, and thus the number of the angle steels 22 is determined. The upper flanges of the two ends of the inverted L-shaped angle steel 22 each have a rectangular corner 221, the upper flange edge of each inverted L-shaped angle steel 22 is aligned and welded with the upper flange edge of the H-shaped steel, and the lower flange of the angle steel 22 is welded with the upper surface of the lower flange of the H-shaped steel; thus, the upper surface of the upper flange of the angle steel 22 and the upper surface of the upper flange of the H-shaped steel beam 21 are on the same plane, so that the upper end surface of the angle steel 22 is flat after being welded to the H-shaped steel beam 21, and the corrugated steel plate 3 is conveniently placed.

[0054] Referring to Figure 2 and Figure 4 , the corrugated steel plate 3 comprises: a corrugated steel plate 31 arranged on the upper end surfaces of the H-shaped steel beams 21 and the angle steels 22, the two side edges of the corrugated steel plate 31 are vertically upward to form side plates 311, and the side plates 311 are away from the end of the H-shaped steel beam 21 and form a flange platform 211 for placing the hanging and pulling member 5; the shape of the corrugated steel plate 31 is as shown in Figure 4 , which has wave crests and wave troughs; the corrugated steel plate 3 further comprises concrete 32, which is poured on the corrugated steel plate 31; the corrugated steel plate 3 further comprises studs 33, which pass through the wave troughs of the corrugated steel plate 31 and are vertically fixed on the upper flanges of the H-shaped steel beams 21, for fixing the corrugated steel plate 31.

[0055] Specifically, the corrugated steel plate 31 is made of conventional steel material and is placed on the plane formed by the H-shaped steel beams 21 and the angle steels 22, without special processing. Since the corrugated steel plate 31 is in wave shape, it not only increases the contact surface with the concrete, making the pouring more stable, but also is conducive to coordinating the stress of the concrete. At the same time, the corrugated steel plate 31 is fixed to the upper flanges of the H-shaped steel beams 21 by the studs 33. In addition, the width of the corrugated steel plate 31 is less than the length of the H-shaped steel beam 21, and the outer side edges of the two outermost angle steels 22 are flush with the side edges of the corrugated steel plate 31, thereby forming the flange platform 211 for placing the hanging and pulling member 5. The width of the structural floor slab 1 is greater than the width of the air duct opening 6, and the area of the flange platform 211 is appropriate for installing the hanging and pulling member 5.

[0056] Referring toFigure 4 The side plate 311 is higher than the wave peak of the corrugated profiled steel sheet 31; the pouring height of the concrete 32 is lower than the height of the side plate 311; the studs 33 are located in the wave trough of the corrugated profiled steel sheet 31 and are evenly arranged along the H-shaped steel beam 21.

[0057] Specifically, the pouring height of the concrete is not less than 60mm from the wave peak of the corrugated profiled steel sheet 31.

[0058] Referring to Figure 4 The masonry wall 4 includes solid brick walls 41 at both ends of the concrete 32, the inner side of the solid brick wall 41 is plastered with an inner side plaster 42, and the outer side of the solid brick wall 41 is plastered with an outer side plaster 43.

[0059] The outer side plaster 43 covers the side plate 311.

[0060] Specifically, the lower part of the solid brick wall 41 is located in the side plate 311 and is attached to the side plate 311, so as to make the structure of the solid brick wall 41 more stable. The thickness of the inner side plaster 42 and the outer side plaster 43 is 10mm-20mm, and the outer side plaster 43 needs to cover the side plate 311 of the profiled steel sheet 31.

[0061] Referring to Figure 4 Each flange platform 211 is provided with a set of hoisting components 5, which include: a pre-embedded steel bar 51 embedded in the structural floor 1; an anchor plate 52 embedded in the structural floor 1, the upper surface of which is welded with the lower end of the pre-embedded steel bar 51; two welding plates 53 welded with the lower end of the anchor plate 52 and the flange platform 211 respectively; and a hoisting angle steel 54, the upper and lower ends of which are welded with the two welding plates 53 respectively.

[0062] The upper end of the pre-embedded steel bar 51 is bent outward by 90° to form an anchor claw.

[0063] Specifically, the anchor claw facilitates the fixation of the anchor plate 52 on the structural floor 1. Through the two vertical welding plates 53, one end of the angle steel 54 is fixedly connected with the structural floor 1, and the other end of the angle steel 54 is fixedly connected with the H-shaped steel beam 21. In this way, the hoisting component 5 facilitates the hoisting of the load-bearing structure 2, and the overall structure is more stable.

[0064] Referring to Figure 4 and Figure 5 The civil air duct further includes a scaffold for bearing the profiled composite slab 3; the scaffold includes a scaffold body 7, the upper end of which is placed on the H-shaped steel beam 21, and the H-shaped steel beam 21 and the scaffold body 7 are connected through a connecting piece 8; the connecting piece includes a U-shaped screw 81 and a cushion block 82 located on the lower flange of the H-shaped steel beam 21; the U-shaped screw 81 clamps the scaffold body 7 therein and sequentially passes through the H-shaped steel beam 21 and the cushion block 82, and then connects the scaffold body 7 and the H-shaped steel beam 21 through a nut.

[0065] Specifically, the frame body 7 is a conventional structure of a scaffold, which is built by a plurality of horizontal poles and vertical poles. The H-shaped steel beam 21 is placed on the top horizontal pole of the frame body 7, and the H-shaped steel beam 21 is connected with the top horizontal pole of the frame body 7 through the connecting piece 8. Since the connecting piece includes the U-shaped screw 81 and the cushion block 82 located on the lower flange of the H-shaped steel beam 21, the U-shaped screw 81 is clamped in the frame body 7 and sequentially passes through the H-shaped steel beam 21 and the cushion block 82, and then the frame body 7 is connected with the H-shaped steel beam 21 through the nut. After the construction of the civil air duct is completed, the scaffold is separated from the H-shaped steel beam 21 through the detachable connecting piece.

[0066] In an embodiment, the method comprises the steps of: Figure 1 and Figure 4 The method for constructing the civil air duct comprises the following steps:

[0067] (1) The scaffold is erected while the formwork of the structural floor 1 is erected, and the H-shaped steel beam 21 is fixed on the scaffold through the connecting piece.

[0068] (2) The angle steel 22 is vertically fixed between the two opposite H-shaped steel beams 21 to form the load-bearing structure 2, and the corrugated profiled steel sheet 31 is fixed on the load-bearing structure 2 through the bolt 33.

[0069] (3) The lower end of the embedded steel bar 51 is welded on the anchor plate 52, which is then placed in the formwork of the structural floor 1 corresponding to each flange platform 211, and the concrete pouring of the structural floor 1 and the profiled composite plate 3 is simultaneously performed.

[0070] (4) After the concrete of the profiled composite plate 3 reaches the strength, the solid brick wall 41 is built along the direction of the air duct opening 6 and closely adheres to the inner side of the side plate 311 of the corrugated profiled steel sheet 31.

[0071] (5) After the concrete of the structural floor 1 reaches the strength, the welding plate 53 is welded on the lower end of the anchor plate 52 and the flange platform 211, respectively, and the upper and lower ends of the hoisting angle steel 54 are fixed with the welding plate 53 to form the hoisting and pulling member 5, and after the welding is completed, the scaffold is removed to complete the construction of the civil air duct.

[0072] In summary, after the scaffold is erected, the H-shaped steel beam 21 and the angle steel 22 are assembled into a flat load-bearing structure 2, and then the corrugated profiled steel sheet 31 is assembled on the flat load-bearing structure 2, and after the assembly is completed, the concrete 32 is poured, and at the same time, the pouring of the structural floor slab 1 can also be carried out simultaneously; the corrugated profiled steel sheet 31 serves as a force-bearing component and also as a pouring formwork, and after pouring is completed, it does not need to be removed, thereby saving construction period. After the concrete reaches the strength, only the solid brick wall 41 needs to be built along the direction of the air duct opening 6, and the plastering construction is carried out; after the building is completed, the hoisting and pulling component 5 is welded, and then the scaffold is removed, and the construction is completed. That is, the fabricated steel structure is used as the load-bearing structure, the air duct bottom plate uses the profiled steel sheet concrete composite floor slab, and the side wall uses the brick masonry, which can effectively solve the technical problems of long construction period, great construction difficulty and difficult form removal of the cast-in-place concrete air duct.

[0073] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations exist in any such actual relationship or order. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0074] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A civil air duct, characterized by, The civil air duct comprises: a structural floor (1); a load-bearing structure (2) arranged in parallel below the structural floor (1); a profiled composite slab (3) fixed on the load-bearing structure (2); a masonry wall (4) built between the structural floor (1) and the profiled composite slab (3); an air duct opening (6) surrounded by the structural floor (1), the profiled composite slab (3) and the masonry wall (4); a hoisting component (5) arranged between the structural floor (1) and the load-bearing structure (2) and located outside the air duct opening (6). The load-bearing structure (2) comprises: at least two H-shaped steel beams (21) arranged at the bottom of the profiled composite slab (3) at equal intervals along the direction of the air duct opening (6); at least two angle steels (22) vertically welded between the opposite two H-shaped steel beams (21).

2. The civil air duct according to claim 1, wherein: the profiled composite slab (3) comprises: a corrugated profiled steel plate (31) arranged on the upper end of the H-shaped steel beam (21) and the angle steel (22), the two side edges of the corrugated profiled steel plate (31) vertically upward form side plates (311), the end of the side plate (311) away from the H-shaped steel beam (21) forms a flange platform (211) for placing the hoisting component (5); concrete (32) poured on the corrugated profiled steel plate (31); studs (33) passing through the troughs of the corrugated profiled steel plate (31) and vertically welded on the upper flange of the H-shaped steel beam (21) for fixing the corrugated profiled steel plate (31).

3. The civil air duct according to claim 2, characterized in that: The height of the side plate (311) is higher than the height of the wave crest of the corrugated profiled steel plate (31); the pouring height of the concrete (32) is lower than the height of the side plate (311); the studs (33) are located in the troughs of the corrugated profiled steel plate (31) and are evenly arranged along the H-shaped steel beam (21).

4. The civil air duct according to claim 3, characterized in that: The masonry wall (4) comprises a solid brick wall (41) located at both ends of the concrete (32), the inner side of the solid brick wall (41) is plastered (42), and the outer side of the solid brick wall (41) is plastered (43).

5. The civil air duct according to claim 4, characterized in that: The outer side plaster (43) covers the side plate (311).

6. The civil air duct according to claim 2, wherein: each flange platform (211) corresponds to a set of hoisting components (5), and the hoisting component (5) comprises: a pre-embedded steel bar (51) embedded in the structural floor (1); an anchor plate (52) embedded in the structural floor (1), the upper surface of the anchor plate (52) is welded with the lower end of the pre-embedded steel bar (51); two welding plates (53) respectively welded on the lower end of the anchor plate (52) and the flange platform (211); a hoisting angle steel (54) with the upper and lower ends welded with the two welding plates (53).

7. The civil air duct according to claim 6, wherein: the upper end of the pre-embedded steel bar (51) is bent outward by 90° to form an anchor claw.

8. The civil air duct according to claim 1, wherein: the civil air duct further comprises a scaffold for bearing the profiled composite slab (3). The scaffold comprises a frame body (7), an upper end of the frame body (7) is provided with the H-shaped steel beam (21), and the H-shaped steel beam (21) is connected with the frame body (7) through a connecting piece (8); The connecting piece comprises a U-shaped screw rod (81) and a cushion block (82) on a lower flange of the H-shaped steel beam (21); the U-shaped screw rod (81) clamps the frame body (7) therein and sequentially passes through the H-shaped steel beam (21) and the cushion block (82), and then the frame body (7) is connected with the H-shaped steel beam (21) through a nut.

9. A method of constructing a civil air duct, characterized by, The construction is performed by using the civil air duct according to any one of claims 1-8, and specifically comprises the following steps: The scaffold is erected while the formwork of the structural floor (1) is erected, the H-shaped steel beam (21) is fixed on the scaffold through the connecting piece; The angle steel (22) is vertically fixed between the two opposite H-shaped steel beams (21) to form a bearing structure (2), and the corrugated profiled steel plate (31) is fixed on the bearing structure (2) through the bolt (33); The lower end of the embedded steel bar (51) is welded on the anchor plate (52), and then the embedded steel bar (51) is placed in the formwork of the structural floor (1) corresponding to each flange platform (211); meanwhile, the concrete of the structural floor (1) and the profiled composite plate (3) is poured; After the concrete of the profiled composite plate (3) reaches the strength, the solid brick wall (41) is built along the direction of the air duct opening (6) and closely adheres to the inner side of the side plate (311) of the corrugated profiled steel plate (31); After the concrete of the structural floor (1) reaches the strength, the welding plate (53) is welded on the lower end of the anchor plate (52) and the flange platform (211) respectively, then the hoisting angle steel (54) is fixed on the welding plate (53) to form a hoisting component (5), and after the welding is completed, the scaffold is removed to complete the construction of the civil air duct.

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