Sheet-shaped combined roof system for reinforcing top layer of high-rise building

Abstract

The invention discloses a sheet-shaped combined roof system for reinforcing a top layer of a high-rise building, which structurally comprises a plurality of framework layers, and the framework layers comprise a first framework layer, a second framework layer, a third framework layer, a fourth framework layer and a fifth framework layer; the framework layers are arranged in parallel, each framework layer is of a steel structure, the first framework layer comprises steel columns and steel beams, the steel columns are arranged on a first-layer stepped floor of a building top layer, the steel columns are perpendicularly connected with the floor, the steel beams are arranged at the tops of the steel columns, the steel beams are perpendicularly connected with the steel columns, and the adjacent framework layers are connected through transverse connecting structures; framework layers are symmetrically arranged on the top layer of the building. Through the arrangement of the single wall in the form of the multi-layer steel structure, the top layer of the building is subjected to multi-stage reinforcement, and meanwhile, the framework layers are connected by arranging the transverse connecting structures between the framework layers, so that the stress distribution is uniform, and the stress concentration is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel structure roof, and particularly relates to a sheet-shaped combined roof system for reinforcing a top layer of a high-rise building. BACKGROUND

[0002] With the acceleration of urbanization, the demand for reconstruction of existing high-rise buildings is increasing, especially the roof area often needs to be reinforced by adding facilities (such as equipment layer, green space or functional floor) to realize functional upgrading. However, the original structure design of the roof of the existing building often does not reserve additional load redundancy, resulting in problems such as insufficient bearing capacity and decreased seismic performance during reconstruction, and the roof structure needs to be reinforced.

[0003] The commonly used reinforcement technologies in the industry at present mainly include the following: 1. Concrete shear wall reinforcement method: the structure stiffness is enhanced by cast-in-place concrete shear wall, but its construction period is long, the wet work amount is large, and the added concrete self-weight significantly increases the load of the bottom structure, which may cause a chain reinforcement demand; 2. External expansion steel frame reinforcement method: a steel frame is added outside the building to share the load, but it needs to occupy additional space, which has a greater impact on the appearance of the building and the surrounding planning, and the node connection is complex, requiring high construction precision.

[0004] In addition, the traditional reinforcement scheme often faces special challenges in roof reconstruction: space limitation: the roof working surface is narrow, and it is difficult to transport large equipment and materials; time pressure: the reconstruction of the existing building needs to minimize the interference with normal use, and the traditional construction method is difficult to meet the rapid construction demand; insufficient compatibility: the connection reliability between the new structure and the original building is low, and stress concentration or deformation incoordination problems are easy to occur. SUMMARY

[0005] The purpose of the present application is to overcome the deficiencies in the prior art, and to provide a sheet-shaped combined roof system for reinforcing a top layer of a high-rise building. The system of the present application reinforces the top layer of the building in multiple stages by setting a single-piece wall in the form of a multi-layer steel structure, and connects each frame layer by setting a transverse connecting structure between each frame layer, so that the stress is evenly distributed and stress concentration is avoided.

[0006] In order to achieve the above-mentioned purpose of the application, the technical solution provided by the present application is as follows: The utility model provides a sheet shape combined roof system for high building top layer reinforcement, and the building top layer is the stepped reinforced concrete inner cylinder outer frame structure, and the middle part of building top layer is the square concrete frame, which comprises a plurality of frame layers, and the frame layers comprise the first frame layer, the second frame layer, the third frame layer, the fourth frame layer and the fifth frame layer, the frame layers are arranged in parallel, and the frame layers are all steel structures, the first frame layer comprises steel columns and steel beams, the steel columns are arranged on the first layer stepped floor of building top layer, and the steel columns are connected with the floor vertically, the steel beams are arranged on the top of steel columns, and the steel beams are connected with the steel columns vertically, the second frame layer is arranged on the second layer stepped floor of building top layer, the middle part steel columns of third frame layer are arranged on the third layer stepped floor of building top layer, the middle part steel columns of fourth frame layer are arranged on the fourth layer stepped floor of building top layer, and the both ends steel columns of fourth frame layer are arranged on the third layer stepped floor of building top layer, the fifth frame layer is arranged on the fourth layer stepped floor of building top layer, the adjacent frame layers are connected through horizontal connecting structure, and the frame layers are symmetrically arranged on building top layer.

[0007] Further, the steel columns in the first frame layer are arranged on the outside of building top layer, a plurality of steel columns are arranged on the first layer stepped floor of building top layer, the top between adjacent steel columns is connected and fixed through steel beams, the height of steel column in the first frame layer is greater than the second layer stepped floor of building top layer, and the distance between the both ends steel columns in the second frame layer is greater than the distance between the both ends steel columns in the first frame layer.

[0008] Further, the second frame layer comprises four steel columns, the height of steel column is greater than the third layer stepped floor of building top layer, the top between adjacent steel columns is connected and fixed through steel beams, and the bottom of two steel columns on one side of the second frame layer is connected through steel beams.

[0009] Further, the horizontal connecting structure between the first frame layer and the second frame layer is that the top steel beam in the first frame layer is connected with the bottom of steel column in the middle part of the second frame layer through the horizontal steel beam, a steel column is arranged on the horizontal steel beam, the top end of steel column on the horizontal steel beam is connected with the top of steel column arranged in the middle part of the second frame layer, the top of steel column on one end of the first frame layer is connected with the steel beam at the bottom of the second frame layer through the horizontal steel beam, and the top of steel column on the other end of the first frame layer is connected and fixed with the steel column on the outside of one end of the second frame layer through the horizontal steel beam.

[0010] Further, the steel columns arranged in the middle of the third framework layer and the top of the steel columns arranged at both ends of the third framework layer are flush, the top of the steel columns arranged in the middle of the third framework layer is flush with the fourth layer stepped floor of the top floor of the building, and the top of the steel columns in the middle of the third framework layer is connected with the fourth layer stepped floor respectively through a horizontal steel beam.

[0011] Further, the bottom of the steel columns in the middle of the third framework layer is connected with the bottom of the steel columns on both sides of the third framework layer through a steel beam, and the top of the adjacent steel columns is fixedly connected through a steel beam; the horizontal connection structure of the top of the steel columns in the middle of the second framework layer and the bottom of the steel columns in the middle of the third framework layer is the same as the horizontal connection structure of the first framework layer and the second framework layer; the top of the steel columns at both ends of the second framework layer is fixedly connected with the steel beams at both ends of the bottom of the third framework layer through a horizontal steel beam.

[0012] Further, the steel columns arranged in the middle of the fourth framework layer and the top of the steel columns arranged at both ends of the fourth framework layer are flush, the distance between the steel columns in the middle of the fourth framework layer is equal to the distance between the steel columns at both ends of the third framework layer, the bottom of the steel columns in the middle of the fourth framework layer is connected with the steel columns on both sides of the fourth framework layer through a steel beam, and the top of the steel columns of the fourth framework layer is fixedly connected through a steel beam; the top of the steel columns in the middle of the fourth framework layer is connected with the outside of the square concrete frame in the middle of the top floor of the building through a horizontal steel beam.

[0013] Further, the third framework layer and the fourth framework layer are connected through a horizontal connection structure, specifically, vertical steel columns are arranged on the horizontal steel beams arranged between the top of the steel columns in the middle of the third framework layer and the fourth layer stepped floor, the bottom of the vertical steel columns is connected with the third layer stepped floor of the top floor of the building perpendicularly, and the top of the vertical steel columns is connected with the top of the steel columns in the middle of the fourth framework layer through a horizontal steel beam.

[0014] Further, the bottom of the steel columns in the fifth framework layer is connected with the fourth layer stepped floor of the top floor of the building perpendicularly, the top of the steel columns is fixedly connected with the outside of the square concrete frame in the middle of the top floor of the building through a steel beam, the distance between the steel columns of the fifth framework layer is the same as the distance between the steel columns at both ends of the fourth framework layer, and the top of the steel columns of the fifth framework layer is connected with the steel columns at both ends of the fourth framework layer through a horizontal steel beam; the two steel columns of the fifth framework layer are symmetrically arranged on both sides of the square concrete frame of the top floor of the building.

[0015] Further, the middle part of the square concrete frame of the building top layer is respectively provided with a sixth framework layer, the square concrete frame of the sixth framework layer is connected and fixed through a steel beam, the spacing between the steel columns of the sixth framework layer is the same as the spacing between the two end steel columns of the fifth framework layer, and the top parts of the steel columns of the sixth framework layer are respectively connected with the two end steel columns of the fifth framework layer through a transverse steel beam; the fifth framework layer, the fourth framework layer, the third framework layer, the second framework layer and the first framework layer are sequentially and symmetrically distributed on the left and right sides of the sixth framework layer.

[0016] Based on the above technical scheme, the sheet-shaped combined roof system for reinforcing the top layer of a high-rise building has the following technical advantages after practical application: 1. The sheet-shaped combined roof system for reinforcing the top layer of a high-rise building can reinforce the top layer of the building in multiple stages through the arrangement of the single-piece wall in the form of multiple layers of steel structures, and can connect each framework layer through the arrangement of a transverse connecting structure between each framework layer, so that the stress distribution is uniform and stress concentration is avoided.

[0017] 2. The sheet-shaped combined roof system for reinforcing the top layer of a high-rise building can uniformly distribute the stress of the building top layer and avoid the problem of uncoordinated deformation of the building top layer by symmetrically distributing the framework layers on the building top layer.

[0018] 3. The sheet-shaped combined roof system is applied to the top of an existing high-rise building, which not only increases the strength of the top and improves the seismic performance of the building, but also improves the aesthetics of the roof, facilitates the subsequent addition of lighting and pattern display equipment, provides a thought and direction for transforming existing buildings into modern buildings, and provides a practical implementation scheme for transforming old urban areas into new cities. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a multi-layer single-piece wall structure perspective view of the sheet-shaped combined roof system for reinforcing the top layer of a high-rise building.

[0020] Fig. 2 is a multi-layer single-piece wall structure sectional view of the sheet-shaped combined roof system for reinforcing the top layer of a high-rise building.

[0021] Fig. 3 is a multi-layer single-piece wall structure top view of the sheet-shaped combined roof system for reinforcing the top layer of a high-rise building. DETAILED DESCRIPTION

[0022] To make the purpose, technical scheme and advantages of the present application clearer, the present application will be described below through specific examples shown in the accompanying drawings However, it should be understood that these descriptions are only exemplary The present application is not intended to be limited to the embodiments shown, but is to be accorded the full scope consistent with the claims, to interpret which the embodiments are intended only as examples. Embodiment

[0023] As shown in Figs. 1-3 , the embodiment is a sheet-shaped combined roof system for reinforcing the top floor of a high-rise building, the top floor of the building is a stepped reinforced concrete inner tube outer frame structure, and the middle part of the top floor of the building is a square concrete frame; the embodiment is used for modernizing the old high-rise building, enhancing the stability of the top part of the building to meet the anti-seismic performance requirements, facilitating the installation of new facilities, and enhancing the aesthetic degree and modern sense of the overall building.

[0024] The structural components of the sheet-shaped combined roof system of the embodiment include a plurality of frame layers and a plurality of transverse connecting structures, the frame layers include a first frame layer 1, a second frame layer 2, a third frame layer 3, a fourth frame layer 4, and a fifth frame layer 5; the frame layers are arranged in parallel, and the frame layers are all steel structures; the first frame layer 1 includes steel columns 7 and steel beams 8, the steel columns 7 are arranged on the first layer of stepped floor of the top floor of the building, the steel columns 7 are vertically connected to the floor, the steel beams 8 are arranged on the top of the steel columns 7, and the steel beams 8 are vertically connected to the steel columns 7; the second frame layer 2 is arranged on the second layer of stepped floor of the top floor of the building, the two end steel columns 7 in the third frame layer 3 are arranged on the second layer of stepped floor of the top floor of the building, the middle steel column 7 of the third frame layer 3 is arranged on the third layer of stepped floor of the top floor of the building, the middle steel column 7 of the fourth frame layer 4 is arranged on the fourth layer of stepped floor of the top floor of the building, and the two end steel columns 7 of the fourth frame layer 4 are arranged on the third layer of stepped floor of the top floor of the building; the fifth frame layer is arranged on the fourth layer of stepped floor of the top floor of the building; the adjacent frame layers are connected through the transverse connecting structures; and the frame layers are symmetrically arranged on the top floor of the building.

[0025] Through the arrangement of the single-piece wall in the form of the multi-layer steel structure, the top floor of the building is reinforced in multiple stages, and the transverse connecting structures are arranged between each frame layer to connect each frame layer, so that the stress distribution is uniform and stress concentration is avoided. Embodiment

[0026] On the basis of the embodiment 1, the steel columns 7 in the first frame layer 1 are arranged on the outside of the top floor of the building, a plurality of steel columns 7 are arranged on the first layer of stepped floor of the top floor of the building, the top parts between the adjacent steel columns 7 are connected and fixed through the steel beams 8, the height of the steel column 7 in the first frame layer 1 is greater than that of the second layer of stepped floor of the top floor of the building; and the distance between the two end steel columns 7 in the second frame layer 2 is greater than the distance between the two end steel columns 7 in the first frame layer 1.

[0027] The second frame layer 2 includes four steel columns 7, the height of the steel column 7 is greater than the third layer of the building top layer, the top of the adjacent steel columns 7 is connected and fixed by the steel beam 8, and the bottom of the two steel columns 7 on one side of the second frame layer 2 is provided with the steel beam 8 for connection.

[0028] The horizontal connection structure between the first frame layer 1 and the second frame layer 2 is that the top steel beam 8 in the first frame layer 1 is connected with the bottom of the steel column 7 in the middle of the second frame layer 2 by the horizontal steel beam 9, the horizontal steel beam 9 is provided with the steel column 7, the upper end of the steel column 7 on the horizontal steel beam 9 is connected with the top of the steel column 7 arranged in the middle of the second frame layer 2, the top of the steel column 7 at one end of the first frame layer 1 is connected with the steel beam 8 at the bottom of the second frame layer 2 through the horizontal steel beam 9, and the top of the steel column 7 at the other end of the first frame layer 1 is connected and fixed with the steel column 7 outside one end of the second frame layer 2 through the horizontal steel beam 9.

[0029] The top of the steel column 7 arranged in the middle of the third frame layer 3 is flush with the top of the steel column 7 arranged at both ends of the third frame layer 3, the top of the steel column 7 arranged in the middle of the third frame layer 3 is flush with the fourth layer of the building top layer, the top of the steel column 7 arranged in the middle of the third frame layer 3 is connected with the fourth layer of the building top layer through the horizontal steel beam 9 respectively, and the distance between the steel columns 7 arranged at both ends of the third frame layer 3 is greater than the distance between the steel columns 7 arranged at both ends of the second frame layer 2.

[0030] The bottom of the steel column 7 arranged in the middle of the third frame layer 3 is connected with the bottom of the steel column 7 arranged at both sides of the third frame layer 3 through the steel beam 8, the top of the adjacent steel columns 7 is connected and fixed by the steel beam 8, the horizontal connection structure of the top of the steel column 7 arranged in the middle of the second frame layer 2 and the bottom of the steel column 7 arranged in the middle of the third frame layer 3 is the same as the horizontal connection structure of the middle of the first frame layer 1 and the second frame layer 2, and the top of the steel column 7 arranged at both ends of the second frame layer 2 is connected and fixed with the steel beam 8 at both ends of the bottom of the third frame layer 3 through the horizontal steel beam 9.

[0031] The top of the steel column 7 arranged in the middle of the fourth frame layer 4 is flush with the top of the steel column 7 arranged at both ends of the fourth frame layer 4, the distance between the steel columns 7 arranged at both ends of the fourth frame layer 4 is equal to the distance between the steel columns 7 arranged at both ends of the third frame layer 3, the bottom of the steel column 7 arranged in the middle of the fourth frame layer 4 is connected with the steel column 7 arranged at both sides of the fourth frame layer 4 through the steel beam 8, and the top of the steel column 7 of the fourth frame layer 4 is connected and fixed by the steel beam 8, the top of the steel column 7 arranged in the middle of the fourth frame layer 4 is connected with the outside of the square concrete frame in the middle of the building top layer through the horizontal steel beam 9.

[0032] The third framework layer 3 and the fourth framework layer 4 are connected by a transverse connecting structure, which is that vertical steel columns 10 are arranged on the transverse steel beams 9 arranged between the top of the steel column 7 in the middle of the third framework layer 3 and the fourth layer stepped floor, the bottom of the vertical steel column 10 is connected vertically with the third layer stepped floor of the building top layer, and the top of the vertical steel column 10 is connected with the top of the steel column 7 in the middle of the fourth framework layer 4 through the transverse steel beam 9.

[0033] The bottom of the steel column 7 in the fifth framework layer 5 is connected vertically with the fourth layer stepped floor of the building top layer, the top of the steel column 7 is connected and fixed with the outside of the square concrete frame in the middle of the building top layer through the steel beam 8, the spacing between the steel columns 7 of the fifth framework layer 5 is the same as the spacing between the two end steel columns 7 in the fourth framework layer 4, the top of the steel column 7 of the fifth framework layer 5 is connected with the two end steel columns 7 in the fourth framework layer 4 through the transverse steel beam 9 respectively, and the two steel columns 7 of the fifth framework layer 5 are symmetrically arranged on the two sides of the square concrete frame of the building top layer. Embodiment

[0034] On the basis of embodiment 1 and embodiment 2, the middle of the square concrete frame of the building top layer is respectively provided with the sixth framework layer 6, the square concrete frame of the building top layer of the sixth framework layer 6 is connected and fixed through the steel beam 8, the spacing between the steel columns 7 of the sixth framework layer 6 is the same as the spacing between the two end steel columns 7 in the fifth framework layer 5, the top of the steel column 7 of the sixth framework layer 6 is connected with the two end steel columns 7 in the fifth framework layer 5 through the transverse steel beam 9 respectively, and the sixth framework layer 6 is sequentially and symmetrically distributed with the fifth framework layer 5, the fourth framework layer 4, the third framework layer 3, the second framework layer 2 and the first framework layer 1 on the left and right sides.

[0035] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that; the specific embodiments of the application can be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application claimed.

Claims

1. A sheet-like composite roof system for reinforcing the top floor of a high-rise building, wherein the top floor of the building is a stepped reinforced concrete inner cylinder and outer frame structure, and the middle part of the top floor is a square concrete frame, characterized in that, The system comprises multiple structural layers, including a first, second, third, fourth, and fifth structural layer. These layers are arranged in parallel and are all steel structures. The first structural layer includes steel columns and beams. The steel columns are located on the first stepped floor of the building's top floor and are perpendicularly connected to the floor. The steel beams are located at the top of the steel columns and are perpendicularly connected to them. The second structural layer is located on the second stepped floor of the building's top floor. The third structural layer has steel columns at both ends located on the second stepped floor of the building's top floor, and a central steel column located on the third stepped floor of the building's top floor. The fourth structural layer has a central steel column located on the fourth stepped floor of the building's top floor, and two end steel columns located on the third stepped floor of the building's top floor. The fifth structural layer is located on the fourth stepped floor of the building's top floor. Adjacent structural layers are connected by a lateral connection structure; The building's top floor features symmetrically arranged structural layers.

2. The sheet-like modular roofing system for reinforcing the top floor of high-rise buildings according to claim 1, characterized in that, The steel columns in the first frame layer are set on the outside of the top floor of the building. Multiple steel columns are set on the first stepped floor of the top floor of the building. The tops of adjacent steel columns are connected and fixed by steel beams. The height of the steel columns in the first frame layer is greater than that of the second stepped floor of the top floor of the building. The distance between the two ends of the steel columns in the second frame layer is greater than the distance between the two ends of the steel columns in the first frame layer.

3. A sheet-like modular roofing system for reinforcing the top floor of a high-rise building according to claim 2, characterized in that, The second frame layer includes four steel columns. The height of the steel columns is greater than the third floor of the top floor of the building. The tops of adjacent steel columns are connected and fixed by steel beams. The bottoms of two steel columns on one side of the second frame layer are connected by steel beams.

4. A sheet-like modular roofing system for reinforcing the top floor of a high-rise building according to claim 3, characterized in that, The first and second frame layers are connected by a transverse connection structure as follows: the top steel beam in the first frame layer is connected to the bottom of the steel column in the middle of the second frame layer by a transverse steel beam. A steel column is installed on the transverse steel beam, and the upper end of the steel column on the transverse steel beam is connected to the top of the steel column in the middle of the second frame layer. The top of the steel column at one end of the first frame layer is connected to the bottom steel beam of the second frame layer by a transverse steel beam, and the top of the steel column at the other end of the first frame layer is connected and fixed to the outer side of the steel column at one end of the second frame layer by a transverse steel beam.

5. A sheet-like modular roofing system for reinforcing the top floor of a high-rise building according to claim 4, characterized in that, The tops of the steel columns in the middle of the third frame layer and the steel columns at both ends of the third frame layer are flush. The top height of the steel columns in the third frame layer is flush with the fourth floor of the building's top floor. The top of the steel columns in the middle of the third frame layer is connected to the fourth floor by transverse steel beams. The distance between the steel columns at both ends of the third frame layer is greater than the distance between the steel columns at both ends of the second frame layer.

6. A sheet-like modular roofing system for reinforcing the top floor of a high-rise building according to claim 5, characterized in that, The bottom of the steel column in the middle of the third frame layer is connected to the bottom of the steel column on both sides of the third frame layer by steel beams, and the top of the adjacent steel columns is connected and fixed by steel beams; the transverse connection structure between the top of the steel column in the middle of the second frame layer and the bottom of the steel column in the middle of the third frame layer is the same as the transverse connection structure between the middle of the first frame layer and the second frame layer; the top of the steel column at both ends of the second frame layer is connected and fixed to the steel beam at both ends of the bottom of the third frame layer by transverse steel beams.

7. A sheet-like modular roofing system for reinforcing the top floor of a high-rise building according to claim 6, characterized in that, The steel columns in the middle of the fourth frame layer are flush with the tops of the steel columns at both ends of the fourth frame layer. The distance between the steel columns at both ends of the fourth frame layer is equal to the distance between the steel columns at both ends of the third frame layer. The bottom of the steel column in the middle of the fourth frame layer is connected to the steel columns on both sides of the fourth frame layer by steel beams. The top of the steel column in the fourth frame layer is connected and fixed by steel beams. The top of the steel column in the middle of the fourth frame layer is connected to the outside of the square concrete frame in the middle of the top floor of the building by a transverse steel beam.

8. A sheet-like modular roofing system for reinforcing the top floor of a high-rise building according to claim 7, characterized in that, The third and fourth structural frames are connected by a horizontal connection structure, specifically: vertical steel columns are installed on the horizontal steel beams between the top of the steel columns in the middle of the third structural frame and the fourth floor slab. The bottom of the vertical steel columns is perpendicularly connected to the third floor slab on the top floor of the building, and the top of the vertical steel columns is connected to the top of the steel columns in the middle of the fourth structural frame through a horizontal steel beam.

9. A sheet-like modular roofing system for reinforcing the top floor of a high-rise building according to claim 7, characterized in that, The bottom of the steel columns in the fifth frame layer is vertically connected to the fourth floor of the building's top floor. The top of the steel columns is connected and fixed to the outside of the square concrete frame in the middle of the building's top floor by steel beams. The spacing between the steel columns in the fifth frame layer is the same as the spacing between the two ends of the steel columns in the fourth frame layer. The top of the steel columns in the fifth frame layer is connected to the two ends of the steel columns in the fourth frame layer by transverse steel beams. The two steel columns of the fifth frame are symmetrically arranged on both sides of the square concrete frame on the top floor of the building.

10. A sheet-like modular roofing system for reinforcing the top floor of a high-rise building according to claim 9, characterized in that, The sixth frame layer is provided on both sides of the middle of the square concrete frame of the top floor of the building. The square concrete frame of the top floor of the sixth frame layer is connected and fixed by steel beams. The spacing between the steel columns of the sixth frame layer is the same as the spacing between the two ends of the steel columns in the fifth frame layer. The top of the steel columns of the sixth frame layer is connected to the two ends of the steel columns in the fifth frame layer by transverse steel beams. The fifth frame layer, the fourth frame layer, the third frame layer, the second frame layer and the first frame layer are symmetrically distributed on the left and right sides of the sixth frame layer.

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