Cantilever corridor construction supporting system

Abstract

The utility model relates to the technical field of building construction, in particular to a cantilever corridor construction supporting system which comprises integrally-formed cantilever I-shaped steel which is divided into a fixed section and a cantilever section. The fixed section is fixed on a floor slab through a plurality of U-shaped embedded parts; one end of the overhanging section is connected with the fixed section, and the other end of the overhanging section is sequentially provided with an aluminum mold supporting framework and a protective framework; the lower supporting system is fixedly connected with the cantilever section and the floor lower beam to form a triangular stable supporting structure. The aluminum mold supporting framework is composed of a first aluminum mold rod, a second aluminum mold rod and a third aluminum mold rod which are sequentially arranged in the direction from the fixed section to the cantilever section. The overhanging I-shaped steel is adjusted to be a lower supporting system from an upward pulling system, the strength of the I-shaped steel adopted by the lower supporting system is high, the problem of steel wire rope obstacles is solved, the worker stumbling risk disappears, and the overall stability of the overhanging I-shaped steel is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building construction, specifically relates to a cantilevered corridor construction support system. BACKGROUND

[0002] Traditional cantilevered corridor support system: two 16mm diameter steel wire ropes are pulled to the upper main structure on each cantilevered I-beam upper part, individual I-beams penetrate reinforced concrete shear walls, fire corridor formwork support system adopts wood formwork combined with steel pipe scaffold support system, and the root of the support vertical pole adopts 20mm diameter threaded steel welding positioning. Specific defects: (1) the steel wire ropes pulled on the upper part of the I-beam affect the formwork and frame construction, and workers are prone to tripping, which has safety hazards; (2) the I-beam penetrating the reinforced concrete shear wall has an impact on the main structure, and the hole needs to be plugged later, which has the risk of incomplete plugging and water leakage; (3) the fire corridor structure entity quality beam slab concrete section size and visuality of the wood formwork construction are poor; (4) the wood formwork support system is set up in a way that the length is a handrail, the wheel buckle and the disc buckle, and the horizontal distance, vertical distance and layout all need to arrange rod members, which has a large self-weight and is prone to tripping workers; (5) the vertical pole positioning adopts welding reinforcement fixation, which has the risk of fire and electric shock, and once fixed, if there is a size deviation, it needs to be re-cut and adjusted, which has the risk of rework.

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defects in the prior art, and to provide a cantilevered corridor construction support system. UTILITY MODEL CONTENTS

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defects in the prior art, and to provide a cantilevered corridor construction support system.

[0005] A cantilevered corridor construction support system comprises a cantilevered I-beam, a lower support system, an aluminum formwork support framework and a protective framework.

[0006] The integrally formed cantilevered I-beam is divided into a fixed section and a cantilevered section; the fixed section is fixed to the floor through a plurality of U-shaped embedded parts; one end of the cantilevered section is connected to the fixed section, and the other end is sequentially provided with the aluminum formwork support framework and the protective framework;

[0007] The lower support system is fixedly connected to the cantilevered section and the floor beam below, forming a triangular stable support structure.

[0008] The corridor structure is arranged on the aluminum formwork support structure installed on the overhanging section; the aluminum formwork support structure is composed of a first aluminum formwork rod, a second aluminum formwork rod and a third aluminum formwork rod arranged in sequence along the direction from the fixed section to the overhanging section, and the first aluminum formwork rod is 3.075 m away from the floor top beam, the second aluminum formwork rod is 0.925 m away from the first aluminum formwork rod, and the third aluminum formwork rod is 0.9 m away from the second aluminum formwork rod; the protective structure is 0.4 m away from the third aluminum formwork rod.

[0009] Preferably, the lower support system comprises a lower support main rod, a first inner inclined support rod and a second inner inclined support rod.

[0010] One end of the lower support main rod is fixedly connected with the floor lower beam, and the other end is fixedly connected with the overhanging section; the distance between the floor top beam and the lower beam is 2.85 m.

[0011] One end of the first inner inclined support rod is fixedly connected with the connection position of the overhanging section and the fixed section, and the other end is fixedly connected with the lower support main rod perpendicularly; one end of the second inner inclined support rod parallel to the first inner inclined support rod is fixedly connected with the overhanging section, and the other end is fixedly connected with the lower support main rod.

[0012] The length of the second inner inclined support rod is 1.35 m.

[0013] Preferably, the fixed section of the overhanging I-beam is fixed to the floor through four U-shaped embedded parts, specifically: the four U-shaped embedded parts are a first U-shaped ring, a second U-shaped ring, a third U-shaped ring and a fourth U-shaped ring.

[0014] The length of the overhanging I-beam is 15 m; the length of the fixed section is 8.5 m.

[0015] The first U-shaped ring, the second U-shaped ring, the third U-shaped ring and the fourth U-shaped ring are arranged in sequence on the floor along the direction from the fixed section to the overhanging section, and the distance between the first U-shaped ring and the end face of the end of the fixed section away from the overhanging section is 0.2 m; the distance between the first U-shaped ring and the second U-shaped ring is 0.2 m; the distance between the second U-shaped ring and the third U-shaped ring is 5 m; and the fourth U-shaped ring is fixed to the floor top beam.

[0016] Preferably, the included angle between the other end of the lower support main rod and the fixed connection position of the overhanging section is 32 degrees.

[0017] Preferably, one end of the lower support main rod is fixedly connected with the floor lower beam, specifically:

[0018] An L-shaped connecting plate is fixed on the floor lower beam; and the length ratio of the horizontal section and the vertical section of the L-shaped connecting plate is 2:3.

[0019] The horizontal section is fixed to the top surface of the floor lower beam and is fixedly connected through a steel expansion bolt;

[0020] The vertical section fixed to the side surface of the floor lower beam is provided with a bolt hole matched with one end of the lower support main rod, so that one end of the lower support main rod is bolted with the vertical section.

[0021] Preferably, the cantilevered I-beam adopts No. 18 I-beam;

[0022] The lower support system adopts No. 16 I-beam.

[0023] Preferably, the lower support system and the fixed connection part of the cantilevered section are indirectly fixed through four-hole connecting pieces;

[0024] The four-hole connecting piece is a square structure, and four bolt holes are uniformly arranged on the four-hole connecting piece to adapt to the structure of the lower support system and the cantilevered section.

[0025] Preferably, the thickness of the four-hole connecting piece is 20 mm; and the size is 100 mm*100 mm.

[0026] Preferably, the size of the L-shaped connecting plate is 100 mm*500 mm, and the thickness of the L-shaped connecting plate is 20 mm.

[0027] The technical scheme of the utility model has the following advantages:

[0028] 1. The cantilevered I-beam is adjusted by the upper pull to form the lower support system, the I-beam used by the lower support system has high strength, all the connecting node structures are fixed by bolt connection, easy assembly and disassembly, the steel wire rope obstacle is solved, the risk of worker tripping is eliminated, and the overall stability of the cantilevered I-beam is improved.

[0029] 2. According to actual needs, the utility model can avoid the shear wall main structure, solve the problem of non-dense plugging of the I-beam reserved hole, and solve the quality hidden danger of water leakage.

[0030] 3. In the utility model, the aluminum mold support frame adopts an aluminum alloy formwork structure and a support system, is assembled in a prefabricated manner, has high recycling of the aluminum formwork, is energy-saving and environment-friendly, can guarantee that the beam slab concrete section size has zero deviation, and can achieve the quality effect of a clean water formwork.

[0031] 4. In the aluminum mold support frame, no horizontal rod is needed, the spacing can be enlarged compared with the wood formwork support system, the self-weight of the frame body is reduced, the worker is convenient for construction, the management personnel is easy to check, and the worker can be prevented from tripping.

[0032] 5. In the aluminum mold support frame and the protection frame, the vertical rod positioning of the vertical rod positioning device is adjusted, is convenient for disassembly, is recyclable, is energy-saving and environment-friendly, and can prevent fire and electric shock hazards.

[0033] 6. The length of the I-beam cantilever is greater than or equal to 5 meters, and meets the stress calculation. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0035] Figure 1 It is a side view of a cantilevered corridor construction support system of the present application.

[0036] Figure 2 It is a strength checking effect schematic diagram of example 2.

[0037] Figure 3 It is a shear checking effect schematic diagram of example 2.

[0038] Figure 4 It is a structural schematic diagram of a four-hole connecting piece in the present application.

[0039] Figure 5 It is a double-hole structure schematic diagram of a vertical section of an L-shaped connecting plate.

[0040] Explanation of reference signs:

[0041] 11 fixed section, 12 cantilevered section, 21 floor slab upper beam, 22 floor slab lower beam, 31 lower support main rod, 32 first inner inclined support rod, 33 second inner inclined support rod, 41 first U-shaped ring, 42 second U-shaped ring, 43 third U-shaped ring, 44 fourth U-shaped ring, 51 L-shaped connecting plate, 61 first aluminum mold rod, 62 second aluminum mold rod, 63 third aluminum mold rod, 64 first vertical beam, 65 corridor plate, 66 second vertical beam, 7 protective frame structure. DETAILED DESCRIPTION

[0042] The technical solutions of the present application will be described below in conjunction with the drawings. Obviously, the described embodiments are some 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 labor are within the scope of protection of the present application.

[0043] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0045] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0046] Embodiment 1

[0047] As Figure 1 The embodiment discloses a kind of overhanging corridor construction support system, comprising: overhanging I-beam, lower support system, aluminum mould support framework and protection framework 7;

[0048] The overhanging I-beam of integrally formed is divided into fixed section 11 and overhanging section 12;Fixed section 11 is fixed on floor by several U-shaped embedded parts;Overhanging section 12 is connected with fixed section 11 at one end, and aluminum mould support framework and protection framework 7 are sequentially installed on the other end;

[0049] Lower support system is fixedly connected with overhanging section 12 and floor bottom beam 22 respectively, to form a triangular stable support structure;

[0050] Aluminum mould support framework installed on overhanging section 12 is provided with corridor framework;Aluminum mould support framework is composed of first aluminum mould rod 61, second aluminum mould rod 62 and third aluminum mould rod 63 sequentially arranged from fixed section 11 to overhanging section 12, and first aluminum mould rod 61 is 213.075m away from floor top beam 213, second aluminum mould rod 62 is 0.925m away from first aluminum mould rod 610, and third aluminum mould rod 63 is 0.9m away from second aluminum mould rod 620;Protection framework 7 and third aluminum mould rod 63 are 0.4m apart.

[0051] Specifically:

[0052] In the embodiment, the aluminum mold support framework and the protection framework 7 are connected with the cantilever section 12 through adjustable vertical rod positioners;

[0053] The adjustable vertical rod positioner comprises a vertical rod, a first galvanized steel plate and a second galvanized steel plate; the first galvanized steel plate is fixedly connected by a bent plate and a horizontal plate; the length of the bent section is 30 mm; the angle of the bent plate is matched with the cantilever I-beam; the second galvanized steel plate is fixedly connected by a first horizontal plate, an inclined plate and a second horizontal plate in sequence, and the connection angle of the inclined plate and the second horizontal plate is matched with the thickness of the top surface of the cantilever I-beam;

[0054] Screw holes are formed in the first galvanized steel plate and the second horizontal plate to lock the connection between the cantilever I-beam and the aluminum mold support framework or the connection between the cantilever I-beam and the protection framework 7 through a stainless steel screw with a diameter of 20 mm and a nut.

[0055] The vertical rod is a galvanized steel pipe with an outer diameter of 33 mm, and is fixedly connected with the first galvanized steel plate at a distance of 34 mm from the bent section; the length of the horizontal section of the first galvanized steel plate is 150 mm, and the width is 50 mm; the first horizontal plate is a galvanized steel plate with a length of 30 mm and a thickness of 5 mm; the second horizontal plate is a galvanized steel plate with a length of 38 mm and a thickness of 5 mm; the total length of the second galvanized steel plate is 80 mm, and the width is 50 mm.

[0056] In addition, in the embodiment, the corridor framework on the aluminum mold support framework is composed of a first vertical beam 64, a corridor plate 65 and a second vertical beam 66 connected in sequence, forming an H-shaped structure; the bottom end of the first vertical beam 64 with a size of 250 mm*800 mm and a strength of C30 is connected with the first aluminum mold rod 61; the bottom surface of the corridor plate 65 with a thickness of 100 mm and a strength of C30 is connected with the second aluminum mold rod 62; the bottom end of the second vertical beam 66 with a size of 200 mm*800 mm and a strength of C30 is connected with the third aluminum mold rod 63.

[0057] In the embodiment, the protection framework 7 is specifically an outer protection hand and foot support, and there are three layers in total, with a width of 800 mm; from bottom to top, the first layer and the second layer are spaced apart by 1800 mm.

[0058] In the embodiment, the lower support system comprises a lower support main rod 31, a first inner inclined support rod 32 and a second inner inclined support rod 33.

[0059] One end of the lower support main rod 31 is fixedly connected with the floor lower beam 22, and the other end is fixedly connected with the cantilever section 12; the distance between the floor upper beam 21 and the lower beam is 2.85 m;

[0060] The first inner inclined support rod 32 is fixedly connected at one end to the connection between the cantilever section 12 and the fixed section 11, and is fixedly connected at the other end to the lower support main rod 31 perpendicularly; the second inner inclined support rod 33, which is parallel to the first inner inclined support rod 32, is fixedly connected at one end to the cantilever section 12, and is fixedly connected at the other end to the lower support main rod 31;

[0061] The second inner inclined support rod 33 is 1.35 m long.

[0062] In the embodiment, the fixed section 11 of the cantilevered I-beam is fixed to the floor through four U-shaped embedded parts, specifically: the four U-shaped embedded parts are respectively a first U-shaped ring 41, a second U-shaped ring 42, a third U-shaped ring 43, and a fourth U-shaped ring 44.

[0063] The cantilevered I-beam is 15 m long; the fixed section 11 is 8.5 m long;

[0064] The first U-shaped ring 41, the second U-shaped ring 42, the third U-shaped ring 43, and the fourth U-shaped ring 44 are sequentially arranged on the floor in the direction from the fixed section 11 to the cantilever section 12, and the distance between the first U-shaped ring 41 and the end face of the end of the fixed section 11 away from the cantilever section 12 is 0.2 m; the distance between the first U-shaped ring 41 and the second U-shaped ring 42 is 0.2 m; the distance between the second U-shaped ring 42 and the third U-shaped ring 43 is 5 m; and the fourth U-shaped ring 44 is fixed to the floor upper beam 21. In the embodiment, the U-shaped embedded parts are all U-shaped ring embedded parts with a round steel diameter of 16 mm.

[0065] In the embodiment, the included angle between the other end of the lower support main rod 31 and the fixed connection with the cantilever section 12 is 32 degrees.

[0066] In the embodiment, the one end of the lower support main rod 31 is fixedly connected to the floor lower beam 22, specifically:

[0067] The floor lower beam 22 is fixed with an L-shaped connecting plate 51; and the length ratio of the horizontal section and the vertical section of the L-shaped connecting plate 51 is 2:3;

[0068] The horizontal section is fixed to the top surface of the floor lower beam 22 and is fixedly connected through a steel expansion bolt with a diameter of 30 mm and a model of Q235;

[0069] The vertical section fixed to the side surface of the floor lower beam 22 is provided with a bolt hole matched with the one end of the lower support main rod, so that the one end of the lower support main rod 31 is bolted with the vertical section. In the embodiment, the size of the L-shaped connecting plate 51 is 100 mm*500 mm, and the thickness of the L-shaped connecting plate 51 is 20 mm; the horizontal section and the vertical section of the L-shaped connecting plate 51 are both double-hole structures, as shown in the drawing. Figure 5

[0070] In the embodiment, the cantilevered I-beam adopts a No. 18 I-beam;

[0071] ​The lower support system adopts No. 16 I-beam.

[0072] In this embodiment, the fixed connection between the lower support system and the cantilever section 12 is indirectly connected through a four-hole connecting piece, a high-strength bolt with a diameter of 20 mm, and a nut.

[0073] The four-hole connecting piece is a square structure, and four bolt holes are evenly arranged on the four-hole connecting piece to adapt to the structure of the lower support system and the cantilever section 12.

[0074] In this embodiment, the thickness of the four-hole connecting piece is 20 mm; the size is 100 mm*100 mm.

[0075] Embodiment 2

[0076] Based on embodiment 1, embodiment 2 is exemplarily introduced in a specific application scenario.

[0077] The application scenario of this embodiment is the design of a fire corridor in the reconstruction of a village;

[0078] The scene requirement is the formwork support system and protective scaffold erection project of a building with a cantilever length exceeding 5 meters.

[0079] This embodiment relates to materials:

[0080] 1. I-beam and auxiliary materials:

[0081] 1) 17 cantilever I-beams; 4 auxiliary cantilever I-beams with a length of 3.5 meters and No. 18;

[0082] 2) 17 lower support main rods 31; 17 first inner inclined support rods 32; 17 second inner inclined support rods 33;

[0083] 3) U-shaped embedded parts, four-hole connecting pieces, high-strength bolts with a diameter of 20 mm and nuts, Q235 steel expansion bolts with a diameter of 30 mm, L-shaped connecting plates 51, and adjustable vertical rod positioners.

[0084] 2. A total of 51 first aluminum mold rods 61, second aluminum mold rods 62, and third aluminum mold rods 63, and a plurality of quick-release heads; outer protective frame pipes with a diameter of 48 mm and a wall thickness of 3.0 mm for forming the protective frame structure 7;

[0085] Actual construction process:

[0086] Construction process: install U-shaped embedded parts for fixing No. 18 cantilever I-beam and auxiliary cantilever I-beam before pouring concrete → pre-assemble cantilever I-beam and lower support system → when the strength of floor and beam concrete is greater than 80%, hoist the cantilever I-beam and the lower support system as a whole → enter the building from outside according to the actual construction layout and fix it by using the U-shaped embedded parts → use bolts to fix the pre-assembled lower support main rod 31 and the connection part of the cantilever I-beam → install adjustable vertical rod positioners on the cantilever section 12 → fully pave 50mm hardwood jumpers on multiple cantilever I-beams → workers stand on the 50mm hardwood jumpers to erect double-row protective scaffolds on the cantilever section 12 and install the mesh net → install aluminum formwork support structures and fire corridor aluminum forms on the cantilever section 12 → bind the steel bars of the fire corridor → check the fire corridor formwork and steel bars → pour concrete for the fire corridor after the acceptance is completed → remove the formwork after the strength of the fire corridor concrete reaches 100% → disassemble and recycle all components for secondary use.

[0087] It should be noted that the auxiliary cantilever I-beam is used according to actual needs in actual application. Since the embodiment is a design of a fire corridor for the reconstruction of Chenzhong Village, the corridor structure uses a fire corridor aluminum form; the quick-release head is used for fixing the fire corridor aluminum form and the aluminum formwork support structure.

[0088] In addition, in the embodiment, the overall stability of the multi-row cantilever corridor construction support system after actual construction is calculated, and the calculation results are shown in Figures 2-3 , the strength calculation diagram is shown in Figure 2 , and the shear calculation diagram is shown in Figure 3 . Based on the results in Figure 2 and Figure 3 and in combination with the relevant specifications in the field, it can be known that the scheme of the embodiment fully meets the requirements of the relevant specifications.

[0089] Obviously, the above embodiments are only examples for clear illustration, and do not limit the implementation modes. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and impossible to exhaust all implementation modes. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A construction support system for overhanging galleries, characterized in that, The application relates to a cantilevered I-shaped steel, a lower support system, an aluminum formwork support framework and a protective framework (7). The cantilevered I-shaped steel is integrally formed into a fixed section (11) and a cantilevered section (12); the fixed section (11) is fixed to a floor through a plurality of U-shaped embedded parts; one end of the cantilevered section (12) is connected with the fixed section (11), and the other end is sequentially provided with the aluminum formwork support framework and the protective framework (7); The lower support system is fixedly connected with the cantilevered section (12) and a floor lower beam (22) respectively, and forms a triangular stable support structure. The aluminum formwork support framework is formed by sequentially arranging a first aluminum formwork rod (61), a second aluminum formwork rod (62) and a third aluminum formwork rod (63) along the direction from the fixed section (11) to the cantilevered section (12), and the first aluminum formwork rod (61) is 3.075m away from the floor upper beam (21), the second aluminum formwork rod (62) is 0.925m away from the first aluminum formwork rod (61), and the third aluminum formwork rod (63) is 0.9m away from the second aluminum formwork rod (62); the protective framework (7) is 0.4m away from the third aluminum formwork rod (63). The lower support system comprises a lower support main rod (31), a first inner inclined support rod (32) and a second inner inclined support rod (33).

2. The overhanging gallery construction support system according to claim 1, wherein One end of the lower support main rod (31) is fixedly connected with the floor lower beam (22), and the other end is fixedly connected with the cantilevered section (12); the floor upper beam (21) and the lower beam are 2.85m apart. One end of the first inner inclined support rod (32) is fixedly connected with the connection position of the cantilevered section (12) and the fixed section (11), and the other end is fixedly connected with the lower support main rod (31) perpendicularly; one end of the second inner inclined support rod (33) which is parallel to the first inner inclined support rod (32) is fixedly connected with the cantilevered section (12), and the other end is fixedly connected with the lower support main rod (31); The second inner inclined support rod (33) is 1.35m long. The fixed section (11) of the cantilevered I-shaped steel is fixed to the floor through four U-shaped embedded parts, specifically: the four U-shaped embedded parts are a first U-shaped ring (41), a second U-shaped ring (42), a third U-shaped ring (43) and a fourth U-shaped ring (44); 3. The overhanging gallery construction support system according to claim 1, wherein The cantilevered I-shaped steel is 15m long; the fixed section (11) is 8.5m long; The first U-shaped ring (41), the second U-shaped ring (42), the third U-shaped ring (43) and the fourth U-shaped ring (44) are sequentially arranged on the floor along the direction from the fixed section (11) to the cantilevered section (12), and the distance between the first U-shaped ring (41) and the end face of the end of the fixed section (11) far from the cantilevered section (12) is 0.2m; the distance between the first U-shaped ring (41) and the second U-shaped ring (42) is 0.2m; the distance between the second U-shaped ring (42) and the third U-shaped ring (43) is 5m; and the fourth U-shaped ring (44) is fixed to the floor upper beam (21). The included angle between the other end of the lower support main rod (31) and the fixed connection position of the cantilevered section (12) is 32 degrees.

4. The overhanging gallery construction support system according to claim 1, wherein One end of the lower support main rod (31) is fixedly connected with the floor lower beam (22), specifically:

5. The overhanging gallery construction support system according to claim 1, wherein The floor lower beam (22) is fixedly provided with an L-shaped connecting plate (51); and the length ratio of the horizontal section and the vertical section of the L-shaped connecting plate (51) is 2:3; The horizontal section is fixed to the top surface of the floor lower beam (22) and is fixedly connected through steel expansion bolts; ​ The vertical section fixed to the side of the floor bottom beam (22) is provided with a bolt hole matched with one end of the lower support main rod, so that one end of the lower support main rod (31) is bolted with the vertical section.

6. The overhanging gallery construction support system of claim 1, wherein, The cantilevered I-beam adopts No.18 I-beam; The lower support system adopts No.16 I-beam.

7. The overhanging gallery construction support system of claim 2, wherein, The fixed connection between the lower support system and the cantilevered section (12) is indirectly fixed by four-hole connectors. The four-hole connector is a square structure, and four bolt holes are evenly arranged on the four-hole connector to match the structure of the lower support system and the cantilevered section (12).

8. The overhanging gallery construction support system according to claim 7, wherein The thickness of the four-hole connector is 20mm; the size is 100mm*100mm.

9. The overhanging gallery construction support system of claim 5, wherein, The size of the L-shaped connecting plate (51) is 100mm*500mm, and the thickness of the L-shaped connecting plate (51) is 20mm.

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