Cantilever structure of existing building light steel awning

Abstract

The utility model discloses an overhanging structure of a light steel awning of an existing building. The overhanging structure comprises a T-shaped frame structure of a frame column, a first frame beam and a second frame beam, wherein the first frame beam and the second frame beam are arranged in the axial direction of the frame column in a spaced mode. The first hoop assembly is arranged on the frame column and located above the first frame beam; the second hoop assembly is arranged on the frame column and located above the second frame beam; the cantilever steel beam unit is located on the non-stress side of the T-shaped frame structure and fixedly connected with the second hoop assembly; one end of the pull rod assembly is connected with the first hoop assembly, and the other end of the pull rod assembly is connected with the cantilever steel beam unit. According to the utility model, the hoop assembly is adopted to replace the traditional mode of fixing the overhanging structure of the awning support by planting steel bars and opening holes, so that the node stress of the overhanging structure of the awning support and the T-shaped frame structure is reliable; and the hoop assembly serves as a connecting node to provide strength for the cantilever structure, a field pull-out test is not needed, and the construction period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of light steel awnings, in particular to a cantilever structure of a light steel awning of an existing building. Background Art

[0002] With the advancement of urban building renewal, existing buildings, as an important part of the city, also need to be renovated to adapt to the development of the city. For example, light steel awnings are added at the entrances of some old commercial buildings to meet their functional needs and enhance their image and quality.

[0003] The conventional method of adding light steel canopies is to drill holes in the structural columns and plant rebars to fix the canopy supports. This method is suitable for existing buildings with a small number of floors and a small canopy cantilever. In this case, the impact of the holes planted with rebars on the structural columns can be ignored. For buildings with many floors and large cantilevers, the damage to the structural columns caused by using rebars to fix the canopy supports will have a greater impact on the building. As the cantilever size of the canopy increases, the canopy pull rod will generate a great tensile force, which has an adverse effect on the concrete. In addition, the use of rebar drilling methods also requires on-site pull-out tests to confirm its safety, which consumes manpower and material resources and has a long construction period. In short, the conventional method of using rebars to fix the canopy supports does not have sufficient safety guarantees in buildings with many floors and large cantilevers.

[0004] In view of the above situation, it is necessary to provide a light steel canopy cantilever structure that causes little damage to the original building and is easy to construct to solve the above technical problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a cantilever structure of a light steel canopy of an existing building to solve the technical problems in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A cantilever structure of a light steel canopy of an existing building, comprising:

[0008] A T-shaped frame structure, the T-shaped frame structure comprising a frame column, a first frame beam and a second frame beam spaced apart in an axial direction of the frame column;

[0009] A first hoop assembly, wherein the first hoop assembly is installed on the frame column and is located above the first frame beam;

[0010] A second hoop assembly, the second hoop assembly is installed on the frame column and located above the second frame beam;

[0011] A cantilever steel beam unit, the cantilever steel beam unit is located on the non-stress-bearing side of the T-shaped frame structure and is fixedly connected to the second hoop assembly;

[0012] A tie rod assembly, one end of which is connected to the first clamp assembly, and the other end of which is connected to the cantilever steel beam unit.

[0013] As a further improvement of the present invention, the first hoop assembly has a first hoop unit, which includes a first back panel located above the first frame beam, two groups of first side panels and a first panel. The first back panel, the two groups of first side panels and the first panel are connected end to end to form the first hoop unit and are tightly clamped on the frame column.

[0014] As a further improvement of the present invention, the first hoop assembly further includes two first ribs located on the first panel and spaced apart, and the first panel is located on the non-stress-bearing side of the frame column.

[0015] As a further improvement of the present invention, the second hoop assembly has a second hoop unit, which includes a second back panel, two groups of second side panels and a second panel located above the second frame beam. The second back panel, the two groups of second side panels and the second panel are connected end to end to form the second hoop unit and are tightly clamped on the frame column.

[0016] As a further improvement of the present invention, the second clamp assembly also includes at least four second ribs that are symmetrical and spaced apart on the second panel, and the second panel is located on the non-stress-bearing side of the frame column.

[0017] As a further improvement of the utility model, the cantilever steel beam unit includes a cantilever steel beam, one end of which is fixedly connected to the second panel and each second rib; at least two square steel tubes are spaced apart at the upper end of the cantilever steel beam.

[0018] As a further improvement of the present invention, the tie rod assembly includes a tie rod, one end of which is fixedly connected to the first panel and each first rib through a first connecting piece; the other end of the tie rod is fixedly connected to the cantilever steel beam through a second connecting piece.

[0019] As a further improvement of the utility model, the first connecting member includes a first end plate located at one end of the pull rod, and a first lifting ear fixedly connected to the first panel and each first rib; a first double-ear plate is fixedly arranged on the first end plate, and the open end of the first double-ear plate is connected to the first lifting ear through a first pin shaft.

[0020] As a further improvement of the present invention, the second connecting member includes a second end plate located at the other end of the pull rod, and a second lifting ear fixedly connected to the cantilever steel beam, a second double-ear plate is fixedly arranged on the second end plate, and the open end of the second double-ear plate is connected to the second lifting ear through a second pin shaft.

[0021] As a further improvement of the utility model, one end of the cantilevered steel beam is inclined downward toward the frame column.

[0022] In the utility model, one end of the tie rod assembly is connected to the T-frame structure through the first clamp assembly, the cantilever steel beam unit is fixedly connected to the T-frame structure through the second clamp assembly, and the other end of the tie rod assembly is connected to the cantilever steel beam unit; thus, by using the clamp assembly to replace the traditional method of fixing the cantilever structure of the awning support with a hole for planting steel bars, the cantilever structure of the awning support and the node of the T-frame structure are reliably stressed. In addition, the clamp assembly surrounding the frame column is used as a connection node and provides strength for the cantilever structure. Compared with the traditional method of planting steel bars, there is no need to conduct on-site pull-out tests, thereby shortening the construction period, simplifying the construction process, and saving manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the cantilever structure of the light steel canopy of an existing building of the utility model;

[0024] Figure 2 It is a schematic diagram of a single-frame structure of the cantilever structure of the light steel canopy of an existing building of the utility model;

[0025] Figure 3 For this utility model Figure 1 A schematic diagram of the structure of the first clamp assembly;

[0026] Figure 4 For this utility model Figure 1 A schematic diagram of the structure of the second clamp assembly;

[0027] Figure 5 For this utility model Figure 1 Schematic diagram of the structure of the middle tie rod assembly;

[0028] Figure numerals: 100, T-frame structure; 101, frame column; 102, first frame beam; 103, second frame beam; 200, first clamp assembly; 201, first back plate; 202, first side plate; 203, first panel; 204, first rib; 300, second clamp assembly; 301, second back plate; 302, second side plate; 303, second panel; 304, second rib; 400, cantilever steel beam unit; 401, cantilever steel beam; 402, square tube steel; 500, tie rod assembly; 501, tie rod; 511, first end plate; 512, first lifting ear; 513, first double-ear plate; 521, second end plate; 522, second lifting ear; 523, second double-ear plate; 600, glass; 700, gutter. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0030] like Figure 1 As shown, this embodiment provides a cantilever structure of a light steel canopy of an existing building, including a T-shaped frame structure 100, a first hoop assembly 200, a second hoop assembly 300, a cantilever steel beam unit 400 and a tie rod assembly 500:

[0031] The T-shaped frame structure 100 includes a frame column 101, a first frame beam 102 and a second frame beam 103 which are spaced apart along the axial direction of the frame column 101; a first clamp assembly 200 is installed on the frame column 101 and is located above the first frame beam 102; a second clamp assembly 300 is installed on the frame column 101 and is located above the second frame beam 103; a cantilever steel beam unit 400 is located on the non-stress-bearing side of the T-shaped frame structure 100 and is fixedly connected to the second clamp assembly 300; one end of the tie rod assembly 500 is connected to the first clamp assembly 200, and the other end of the tie rod assembly 500 is connected to the cantilever steel beam unit 400.

[0032] The conventional method of the prior art for the cantilever structure of light steel awnings is to drill holes in the frame columns and plant rebars to fix the awning supports. This method is suitable for existing buildings with a small number of floors and a small cantilever volume of the awning. In this case, the impact of the holes planted with rebars on the structural columns can be ignored. However, for buildings with many floors and large cantilever sizes of light steel awnings, the damage to the structural columns caused by the use of rebars to fix the awning supports will have a greater impact on the building. As the cantilever size of the awning increases, the awning tie rod will generate a great tensile force, which has an adverse effect on the concrete. In addition, the use of rebars to drill holes requires on-site pull-out tests to confirm its safety, which consumes manpower and material resources and has a long construction period. In short, the conventional method of using rebars to drill holes to fix the awning supports does not have sufficient safety guarantees in buildings with many floors and large cantilever sizes. One end of the tie rod assembly 500 of the utility model is connected to the T-frame structure 100 through the first clamp assembly 200, the cantilever steel beam unit 400 is fixedly connected to the T-frame structure 100 through the second clamp assembly 300, and the other end of the tie rod assembly 500 is connected to the cantilever steel beam unit 400; thus, by using the first clamp assembly 200 and the second clamp assembly 300 to replace the traditional method of anchoring the cantilever structure of the canopy support with holes, the cantilever structure of the canopy support and the node of the T-frame structure 100 are reliably stressed. In addition, the first clamp assembly 200 and the second clamp assembly 300 that surround the frame column 101 are used as the connection node and provide strength for the cantilever structure. Compared with the traditional anchoring method, there is no need to conduct on-site pull-out tests, thereby shortening the construction period, and the construction process is simple, saving manpower and material resources.

[0033] Preferably, if Figure 3As shown, the first clamp assembly 200 has a first clamp unit, which includes a first back plate 201, two groups of first side plates 202 and a first panel 203 located on the first frame beam 102. The first back plate 201, the two groups of first side plates 202 and the first panel 203 are connected end to end to form the first clamp unit and are tightly clamped on the frame column 101.

[0034] Specifically, the first back plate 201 and each group of first side plates 202 are two rectangular steel plates, and the first panel 203 is a rectangular steel plate; each first back plate 201, first side plate 202 and first panel 203 are fixed to the frame column 101 by expansion bolts (not shown in the figure); after each first back plate 201, first side plate 202 and first panel 203 are fixed to the frame column 101, the adjacent first back plates 201, first side plates 202 and first panels 203 are welded and fixed in pairs to tighten the frame column 101. The role of the expansion bolt is only to play a positioning role when the first hoop unit is installed, and it will not damage the structure of the frame column 101 of the existing building. The setting of the expansion bolt does not consider its contribution to the strength when the node is designed and calculated, but relies on the first hoop unit welded together to provide strength. Compared with the traditional anchor bolt, it still needs to conduct on-site pull-out test. The utility model shortens the construction period, and the construction process is simple, and there is sufficient safety guarantee. At the same time, the first hoop unit is located at the upper end of the first frame beam 102, so that the first frame beam 102 also provides a certain supporting force for the first hoop unit.

[0035] Preferably, if Figure 3 As shown, the first clamp assembly 200 further includes two first ribs 204 located on the first panel 203 and spaced apart from each other. The first panel 203 is located on the non-stress-bearing side of the frame column 101 .

[0036] Specifically, two first ribs 204 are arranged vertically and parallelly on the first panel 203 , and both ends of each first rib 204 are welded to the corresponding first side plate 202 . The arrangement of the first ribs 204 facilitates strengthening the strength of the connection.

[0037] Preferably, if Figure 4 As shown, the second clamp assembly 300 has a second clamp unit, and the second clamp unit includes a second back plate 301 located above the second frame beam 103, two groups of second side plates 302 and a second panel 303. The second back plate 301, the two groups of second side plates 302 and the second panel 303 are connected end to end to form a second clamp unit and are tightly clamped on the frame column 101.

[0038] The structure of the second clamp unit is the same as that of the first clamp unit. Specifically, the second back plate 301 and each set of second side plates 302 are two rectangular steel plates, and the second panel 303 is a rectangular steel plate; each second back plate 301, second side plate 302 and second panel 303 are fixed to the frame column 101 by expansion bolts (not shown in the figure) and are located at the upper end of the second frame beam 103; after each second back plate 301, second side plate 302 and second panel 303 are fixed to the frame column 101, the adjacent second back plates 301, second side plates 302 and second panels 303 are welded and fixed in pairs to clamp the frame column 101. The expansion bolts only play a positioning role when the second hoop unit is installed, and will not damage the structure of the frame column 101 of the existing building. The expansion bolts are set without considering their contribution to strength during the node design calculation, but rely on the welded second hoop unit to provide strength. Compared with the traditional anchor bolts, which still require on-site pull-out tests, the utility model shortens the construction period, has a simple construction process, and has sufficient safety guarantees. At the same time, the second hoop unit is located at the upper end of the second frame beam 103, so that the second frame beam 103 also provides a certain support force for the second hoop unit.

[0039] Preferably, if Figure 4 As shown, the second clamp assembly 300 further includes at least four second ribs 304 which are bilaterally symmetrical and spaced apart and are located on the second panel 303 . The second panel 303 is located on the non-stress-bearing side of the frame column 101 .

[0040] Specifically, the number of the second ribs 304 is set according to the height of the cantilever steel beam unit 400, and at least four ribs are welded to the surface of the second panel 303 in a symmetrical manner and in parallel with each other, and the outer side of each second rib 304 is welded to the second side panel 302. The second ribs 304 are arranged to strengthen the strength of the connection.

[0041] Preferably, if Figure 2 As shown, the cantilever steel beam unit 400 includes a cantilever steel beam 401 , one end of which is fixedly connected to the second panel 303 and each second rib 304 ; at least two square tube steels 402 are spaced apart at the upper end of the cantilever steel beam 401 .

[0042] Specifically, one end face of the cantilever steel beam 401 is welded to the second panel 303, and the side face of the cantilever steel beam 401 is welded to each second rib 304, so that the cantilever steel beam 401 can be fixed easily. The glass 600 of the light steel canopy is laid on the top of the square tube steel 402. In addition, there is a gap between the square tube steel 402 near the second panel 303 and the frame column 101, and the gutter 700 is placed in the gap. The end of the glass 600 is flush with the side of the gutter 700 away from the frame column 101, so that rainwater dripping on the glass 600 can be collected in the gutter 700.

[0043] Preferably, if Figure 2 As shown, the tie rod assembly 500 includes a tie rod 501, one end of which is fixedly connected to the first panel 203 and each first rib 204 via a first connecting member; the other end of the tie rod 501 is fixedly connected to the cantilever steel beam 401 via a second connecting member.

[0044] Specifically, the tie rod 501 may be a hollow tube, and the tie rod 501 and the cantilevered steel beam 401 form a cantilevered structure of the light steel awning support between the first clamp assembly 200 and the second clamp assembly 300 and the frame column 101 .

[0045] Preferably, if Figure 5 As shown, the first connecting member includes a first end plate 511 located at one end of the pull rod 501, and a first ear 512 fixedly connected to the first panel 203 and each first rib 204; a first double-ear plate 513 is fixedly arranged on the first end plate 511, and the open end of the first double-ear plate 513 is connected to the first ear 512 through a first pin shaft.

[0046] Specifically, the first end plate 511 is a circular end plate, which is centrally welded to one end of the hollow tie rod 501, the first double-ear plate 513 is vertically centrally welded to the outer end surface of the circular first end plate 511, the first lifting ear 512 is vertically centrally welded to the first panel 203 and welded to the corresponding first rib 204 on both sides, and the first lifting ear 512 is connected to the first double-ear plate 513 through a pin. This arrangement makes it easy to fix one end of the tie rod 501 to the first clamp assembly 200, and then fix one end of the tie rod 501 to the frame column 101.

[0047] Preferably, if Figure 5 As shown, the second connecting member includes a second end plate 521 located at the other end of the pull rod 501, and a second lifting ear 522 fixedly connected to the cantilever steel beam 401, and a second double-ear plate 523 is fixedly arranged on the second end plate 521, and the open end of the second double-ear plate 523 is connected to the second lifting ear 522 through a second pin shaft.

[0048] Specifically, the structure of the second connecting member is the same as that of the first connecting member. The second lifting lug 522 is vertically and centrally welded to the upper end of the cantilevered steel beam 401. This arrangement facilitates fixing the other end of the pull rod 501 to the cantilevered steel beam 401.

[0049] Preferably, if Figure 2 As shown, the cantilever steel beam 401 is inclined downward toward one end of the frame column 101 .

[0050] Specifically, since the cantilevered steel beam 401 is tilted downward at one end toward the frame column 101 , the glass 600 disposed on the square steel tube 402 also has an inward slope, making it easier for rainwater dripping onto the glass 600 to be collected in the gutter 700 .

[0051] It should be noted that when constructing the cantilever structure of the light steel canopy of an existing building, at least two cantilever structures of the utility model are provided, and the glass 600 is placed on two adjacent cantilever structures. For an existing building with a wall, only part of the wall needs to be removed to install the first clamp assembly 200 and the second clamp assembly 300 on the frame column 101.

[0052] To sum up, by adopting the first clamp assembly 200 and the second clamp assembly 300 to replace the traditional anchor bolt method, the canopy support node can be reliably stressed, and the utility model adopts expansion bolts to fix the first clamp assembly 200 and the second clamp assembly 300. The expansion bolts only play a positioning role during installation, and their contributed strength is not considered in the node design calculation. Instead, the strength is provided by relying on the first clamp assembly 200 and the second clamp assembly 300 welded together. Compared with the traditional anchor bolt method that still requires on-site pull-out tests, the utility model shortens the construction period, and the construction process is simple and has sufficient safety guarantees.

[0053] The above detailed description of the specific implementation of the utility model is only used as an example, and the utility model is not limited to the specific implementation described above. For those skilled in the art, any equivalent modification or substitution of the utility model is also within the scope of the utility model. Therefore, the equalization, modification, improvement, etc. made without departing from the spirit and principle of the utility model should be included in the scope of the utility model.

Claims

1. A cantilever structure of a light steel canopy of an existing building, characterized in that: include: A T-shaped frame structure, the T-shaped frame structure comprising a frame column, a first frame beam and a second frame beam spaced apart in an axial direction of the frame column; A first hoop assembly, wherein the first hoop assembly is installed on the frame column and is located above the first frame beam; A second hoop assembly, the second hoop assembly is installed on the frame column and located above the second frame beam; A cantilever steel beam unit, the cantilever steel beam unit is located on the non-stress-bearing side of the T-shaped frame structure and is fixedly connected to the second hoop assembly; A tie rod assembly, one end of which is connected to the first clamp assembly, and the other end of which is connected to the cantilever steel beam unit.

2. The cantilever structure of the light steel canopy of an existing building according to claim 1 is characterized in that: The first hoop assembly has a first hoop unit, which includes a first back plate, two groups of first side plates and a first panel located above the first frame beam. The first back plate, the two groups of first side plates and the first panel are connected end to end to form the first hoop unit and are tightly clamped on the frame column.

3. The cantilever structure of the light steel canopy of an existing building according to claim 2 is characterized in that: The first hoop assembly further includes two first ribs located on the first panel and spaced apart from each other, and the first panel is located on the non-stress-bearing side of the frame column.

4. The cantilever structure of the light steel canopy of an existing building according to claim 3 is characterized in that: The second hoop assembly has a second hoop unit, which includes a second back plate, two groups of second side plates and a second panel plate located above the second frame beam. The second back plate, the two groups of second side plates and the second panel plate are connected end to end to form the second hoop unit and are tightly clamped on the frame column.

5. The cantilever structure of the light steel canopy of an existing building according to claim 4 is characterized in that: The second hoop assembly also includes at least four second ribs that are bilaterally symmetrical and spaced apart on the second panel, and the second panel is located on the non-stress-bearing side of the frame column.

6. The cantilever structure of the light steel canopy of an existing building according to claim 5 is characterized in that: The cantilever steel beam unit comprises a cantilever steel beam, one end of which is fixedly connected to the second panel and each second rib; at least two square steel tubes are arranged at intervals at the upper end of the cantilever steel beam.

7. The cantilever structure of the light steel canopy of an existing building according to claim 6 is characterized in that: The tie rod assembly includes a tie rod, one end of which is fixedly connected to the first panel and each first rib through a first connecting piece; the other end of the tie rod is fixedly connected to the cantilever steel beam through a second connecting piece.

8. The cantilever structure of the light steel canopy of an existing building according to claim 7 is characterized in that: The first connecting member includes a first end plate located at one end of the pull rod, and a first lifting ear fixedly connected to the first panel and each first rib plate; a first double-ear plate is fixedly arranged on the first end plate, and the open end of the first double-ear plate is connected to the first lifting ear through a first pin shaft.

9. The cantilever structure of the light steel canopy of an existing building according to claim 7, characterized in that: The second connecting member includes a second end plate located at the other end of the pull rod, and a second lifting ear fixedly connected to the cantilever steel beam, a second double-ear plate is fixedly arranged on the second end plate, and an open end of the second double-ear plate is connected to the second lifting ear through a second pin shaft.

10. The cantilever structure of the light steel canopy of an existing building according to claim 6, characterized in that: The cantilever steel beam is inclined downward toward one end of the frame column.

Images