A novel hybrid structure of cross-layer steel trusses and cable structures and its implementation method

Abstract

The present invention discloses a novel hybrid structure of a cross-layer steel truss and a cable structure and a method for realizing the same. The hybrid structure comprises at least two core tubes and a hybrid steel structure disposed between the core tubes. The hybrid steel structure comprises a cantilever truss, two cross-layer steel trusses, and an intermediate truss cable structure. The intermediate truss cable structure comprises an intermediate truss steel frame and high-strength cables, each of which is symmetrically attached to both sides of the frame. Applying pre-tension to the high-strength cables is beneficial for reducing the bending moment of the intermediate truss steel frame and adjusting the deformation difference between it and the outer cross-layer steel trusses. It can also reasonably control the cables to always be in a tensioned state, thereby ensuring the load-bearing capacity and safety of the hybrid structure. The present invention constructs a novel hybrid structure using a cross-layer steel truss and a cable structure. By taking advantage of its small cross-section, the hybrid structure increases the usable area and achieves beautiful interior design. The two cables in each cable also enable cable replacement without interrupting building functions during future operations.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to a novel hybrid structure of a cross-layer steel truss and a cable structure and a realization method thereof. Background Art

[0002] A conjoined structure refers to a structure with a connector between two or more towers, excluding the podium. The connection type between a long-span conjoined structure and the main structure is typically determined by the layout of the main structures on either side, primarily consisting of rigid and sliding connections. Conjoined structures typically experience complex forces at the connecting parts. While rigid connections require a higher level of overall structural analysis, they mitigate potential issues often associated with sliding connections, such as difficulties in curtain wall treatment and potential waterproofing risks. Therefore, the Technical Code for Concrete Structures of High-Rise Buildings recommends the use of rigid connections.

[0003] Due to the advantages of steel structures, such as light weight and low seismic effects, connectors with relatively large spans mostly use cross-layer steel truss structures to reduce the self-weight and seismic shear force of the connector. In addition, the connected steel trusses are directly connected to the vertical components of the main bodies on both sides (such as the core tube, tower frame columns, etc.). When the width of the connector is not less than 16m, a steel truss is usually installed in the middle, and this cross-layer steel truss needs to extend to the core tubes on both sides. Obviously, the force on this steel truss is greater than that on the trusses on both sides, so the cross-section of the truss members will also be larger, which affects the lighting and user experience of the building space at the connector, and sometimes even fails to meet the indoor requirements of the building. In this case, the composition of the connected structural system needs to be improved to meet the requirements of the building function.

[0004] Therefore, the existing technology needs to be improved. Summary of the Invention

[0005] In the prior art, the middle span steel trusses in the connector require a large cross-section, which affects the lighting and user experience of the building space at the connector, and sometimes even fails to meet the indoor requirements of the building.

[0006] The present invention aims to alleviate or resolve at least one of the aforementioned problems to at least some extent. In one aspect, the present invention proposes a novel hybrid structure of a cross-layer steel truss and a cable structure, comprising at least two core tubes and a connected steel structure disposed between the core tubes, wherein the core tubes are used to support the connected steel structure. The connected steel structure comprises: a cantilever truss, a first outer truss, a second outer truss, and an intermediate cable structure.

[0007] The cantilever truss is arranged on the core tube, the first outer truss and the second outer truss are both supported on the cantilever truss, the intermediate cable structure includes an intermediate steel frame and high-strength cables, the upper end anchor of the high-strength cable is connected to the node of the core tube, the lower end of the high-strength cable is a tensioning end, and the anchor of the tensioning end is connected to the bottom beam-column node of the intermediate steel frame;

[0008] The high-strength cables are arranged in multiple channels, and each channel of the high-strength cables runs through multiple floors of the connected steel structure. In order to avoid the beams and columns on the middle steel frame, each channel of the high-strength cables uses two prestressed cables. The two prestressed cables are respectively tightly attached to both sides of the middle steel frame and are arranged symmetrically.

[0009] In one embodiment, the first outer truss and the second outer truss are cross-layer steel trusses, and the height of the cross-layer steel trusses can be two or more floors.

[0010] In one embodiment, the core tube includes a first core tube and a second core tube, and the high-strength cables are arranged in six rows, wherein the three high-strength cables on the left are arranged on the first core tube and the side of the middle steel frame adjacent to the first core tube, and the three high-strength cables on the right are arranged on the second core tube and the side of the middle steel frame adjacent to the second core tube, and the three high-strength cables on the left and right sides are symmetrically and evenly distributed.

[0011] In one embodiment, the angle between the high-strength cable and the floor plane is 30°-70°.

[0012] In one embodiment, the distance between the first outer truss and the second outer truss is 20~30m; the middle cable structure is located between the first outer truss and the second outer truss, and the middle cable structure forms two spans in the width direction of the connected structure, each span is 10~15m, so as to ensure the net height of the connected floors, and the two sides of the middle cable structure are connected to the first outer truss and the second outer truss by steel beams respectively.

[0013] In one embodiment, horizontal diagonal bars are provided in the bottom and top floor planes of the first outer truss and the second outer truss, and the horizontal diagonal bars are used to ensure that the connected structure can still bear the stress as a whole when the floor concrete is damaged.

[0014] On the other hand, the present invention also provides a method for realizing the novel hybrid structure of the cross-layer steel truss and the cable structure as described above, which specifically includes the following steps:

[0015] Construct at least two adjacent cores;

[0016] A tire frame is provided between two adjacent core tubes;

[0017] Constructing the connected steel structure on the tire frame;

[0018] Install high-strength cables between the middle steel frame and the core tube, and apply prestress to the high-strength cables for the first time;

[0019] tire unloading stand;

[0020] pouring concrete on the connected steel structure;

[0021] The prestress is applied to the high-strength cables for the second time.

[0022] In one embodiment, the steps of installing high-strength cables between the intermediate steel frame and the core tube and applying prestress to the high-strength cables for the first time include:

[0023] For the first time, 30-60% prestress is applied to the high-strength cables.

[0024] In one embodiment, the step of applying prestress to the high-strength cable for the second time includes:

[0025] A second time, 100% prestress is applied to the high-strength cables.

[0026] Beneficial effects of the present invention:

[0027] 1. The present invention uses the first outer truss, the second outer truss and the middle cable structure as three main load-bearing components, among which the outer trusses of the first and second frames both adopt cross-layer steel trusses, and the height of the cross-layer steel trusses can be two or more floors; the middle cable structure includes a middle steel frame and high-strength cables, each high-strength cable is two prestressed cables, which are close to both sides of the middle steel frame. This new type of hybrid cross-layer steel truss and cable structure has strong load-bearing capacity and reasonable design.

[0028] 2. The middle frame cable structure is equipped with prestressed cables, which can give full play to the advantage of cables being much stronger than steel. Therefore, the cross-section of the cables is much smaller than that of steel components, thereby increasing the indoor usable area and avoiding the impact on the aesthetics of the building due to the large cross-section.

[0029] 3. The advantages of applying pre-tension to prestressed cables are as follows: first, it is beneficial to reduce the bending moment of the middle steel frame and control the cross-sectional size of the component; second, it can coordinate the deformation difference between the middle cable structure and the first and second outer trusses; third, setting pre-tension can ensure that the cables remain under tension under normal use and extreme design conditions, thereby providing rigidity for the connected structure.

[0030] 4. Each high-strength cable consists of two prestressed cables. In order to avoid position conflicts with the steel beams and steel columns of the middle steel frame, the two prestressed cables in the high-strength cable are placed on both sides of the middle steel frame, which has the advantages of symmetrical force and easy installation.

[0031] 5. The present invention adopts two prestressed cables and has a double safety factor of the prestressed cables. The provision of two prestressed cables is beneficial for replacement and maintenance during operation and maintenance. When one of the cables needs to be replaced, the other prestressed cable can bear the force, thereby greatly extending the service life of the connected building. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a rendering of a new hybrid structure of a cross-layer steel truss and a cable structure provided by the present invention.

[0033] Figure 2 This is a schematic diagram of the intermediate truss cable structure of a novel hybrid cross-layer steel truss and cable structure provided by the present invention.

[0034] Figure 3 It is a schematic diagram of the connection between two parallel core tubes and the connected structural steel provided by the present invention.

[0035] Figure 4 It is a schematic diagram of the connection between two non-parallel core tubes and the connected structural steel provided by the present invention.

[0036] Figure 5 It is a schematic diagram of the plan layout of the bottom or top floor of the first and second cross-layer steel trusses provided by the present invention.

[0037] Figure 6 It is a schematic diagram of the middle slat cable structure of a specific embodiment of the connection between two conjoined steel structures and a core tube provided by the present invention.

[0038] Figure 7 It is a tensioning schematic diagram of the connection between the high-strength cable provided by the present invention and the bottom node of the middle steel frame.

[0039] Figure 8 It is a structural schematic diagram of a specific embodiment of the cross-layer steel truss provided by the present invention.

[0040] Figure 9 It is a structural schematic diagram of another specific embodiment of the cross-layer steel truss provided by the present invention.

[0041] Figure 10 It is a schematic diagram of the process of realizing a new hybrid structure of a cross-layer steel truss and a cable structure provided by the present invention.

[0042] Summary of reference numerals:

[0043] 10. A new type of connected structure that combines cross-layer steel trusses and cable structures; 100. Core tube; 100a. First core tube; 100b. Second core tube; 110. Corner column; 200. Connected steel structure; 201. First connected steel structure; 202. Second connected steel structure; 210. First outer truss; 220. Second outer truss; 230. Intermediate steel frame; 240. High-strength cables; 250. Cantilever truss; 260. Steel beam; 270. Horizontal diagonal rod; 280. Cross-layer steel truss; 231. Middle-frame steel beam of the bottom floor; 232. Middle-frame steel beam of the second floor; 233. Middle-frame steel column; 241. Prestressed cable; 242. Temporary tensioning device; 243. Anchor; 244. Pin; 2421. Device node; 2422. Temporary first cable; 2423. Temporary second cable; 234. First ear plate; 235. Temporary ear plate. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clear and distinct, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] Based on the problems existing in the existing technology, please refer to Figure 1 This embodiment provides a new type of hybrid cross-layer steel truss and cable structure. The new hybrid cross-layer steel truss and cable structure 10 includes at least two core tubes 100 and a hybrid steel structure 200 disposed between the core tubes 100. The core tube 100 is used to support the hybrid steel structure 200. Figure 2 as well as Figure 3 The connected steel structure 200 includes: a cantilever truss 250, a first outer truss 210, a second outer truss 220, and an intermediate cable structure. The cantilever truss 250 is set on the core tube 100. The first outer truss 210 and the second outer truss 220 are both supported on the cantilever truss 250. The intermediate cable structure includes an intermediate steel frame 230 and a high-strength cable 240. The upper end anchor 243 of the high-strength cable 240 is connected to the node of the core tube 100. The lower end of the high-strength cable 240 is the tensioning end, and the anchor 243 of the tensioning end ( Figure 7 As shown in the figure, it is connected to the bottom beam-column node of the middle steel frame 230. A plurality of high-strength cables 240 are provided. Each high-strength cable 240 runs through multiple floors of the connected steel structure 200. In order to avoid the beams and columns on the middle steel frame 230, each high-strength cable 240 adopts two prestressed cables 241. The two prestressed cables 241 are respectively tightly attached to the two sides of the middle steel frame 230 and are symmetrically arranged.

[0046] In this example, see Figure 3The first outer truss 210, the second outer truss 220 and the middle cable structure serve as the three main load-bearing components. The first outer truss 210 and the second outer truss 220 are located on the outside of the new joint body and are fixed to the core tube 100 through the cantilever truss 250; please refer to Figure 2 The middle-frame cable structure includes an middle-frame steel frame 230 and a high-strength cable 240. The upper end anchor 243 of the high-strength cable 240 is connected to the node of the core tube 100. The lower end of the high-strength cable 240 is the tensioning end, and its anchor 243 is connected to the bottom beam-column node of the middle-frame steel frame 230.

[0047] In this embodiment, the high-strength cables 240 can be provided in multiple paths, each of which runs through multiple floors of the connected steel structure 200. To avoid the beams and columns on the middle steel frame 230, each high-strength cable 240 uses two prestressed cables 241 ( Figure 7 ), the two prestressed cables 241 are arranged symmetrically.

[0048] The middle-beam cable structure is equipped with prestressed cables 241, which can fully utilize the advantage of cables being much stronger than steel. The advantage of a small cross-section can be used to increase the indoor usable area and ensure the interior is beautiful. By applying pre-tension to the prestressed cables 241, the bending moment of the middle-beam steel frame 230 is reduced, and the cross-sectional size of the component is effectively controlled. At the same time, by setting a reasonable prestress, it can be ensured that the cables remain under tension under normal use and extreme design conditions, providing rigidity for the connected structure. It also makes the deformation of the middle-beam steel frame 230 close to the deformation of the first and second outer trusses 210 and 220, reducing the possibility of warping of the floor slab. In addition, compared with the connected structure using a rigid truss in the middle, this embodiment can reduce the space occupied by steel components and release more usable space. Each high-strength cable 240 has two cables, which are balanced in force, increasing the possibility of cable replacement during operation and maintenance.

[0049] The novel hybrid structure 10 of the cross-layer steel truss and cable structure provided in this embodiment has at least the following beneficial effects:

[0050] 1. This embodiment uses the first outer truss 210, the second outer truss 220 and the middle cable structure as three main load-bearing components, wherein the middle cable structure includes the middle steel frame 230 and the high-strength cable 240. Each high-strength cable 240 is two prestressed cables 241, which are close to both sides of the middle steel frame 230. This new type of hybrid 10 of cross-layer steel trusses and cable structures has strong bearing capacity and reasonable design.

[0051] 2. The middle frame cable structure is provided with prestressed cables 241, which can give full play to the advantage of cables being much stronger than steel. Therefore, the cross section of the cables is much smaller than that of steel components, thereby increasing the indoor usable area and avoiding the impact on the aesthetics of the building due to the large cross section.

[0052] 3. The prestressed cables 241 applying pre-tension have the following advantages: first, it is conducive to reducing the bending moment of the middle steel frame 230 and controlling the cross-sectional size of the component; second, it can coordinate the deformation difference between the middle cable structure and the first outer truss 210 and the second outer truss 220; third, the high-strength cables 240 are set with pre-tension to ensure that the cables remain under tension under normal use and extreme design conditions, thereby providing rigidity for the connected structure.

[0053] 4. Each high-strength cable 240 consists of two prestressed cables 241. In order to avoid position conflicts with the steel beams 260 and steel columns of the middle steel frame 230, the two prestressed cables 241 in the high-strength cable 240 are respectively placed on both sides of the middle steel frame 230, which has the advantages of symmetrical force and easy installation.

[0054] 5. In this embodiment, two prestressed cables 241 are used. Combined with the 2-fold safety factor of the prestressed cables 241, the provision of two prestressed cables 241 is beneficial for replacement and maintenance during operation and maintenance. When one of the cables needs to be replaced, the other prestressed cable 241 can bear the force, thereby greatly extending the service life of the connected building.

[0055] In one embodiment, see Figure 8 and Figure 9 The first outer truss 210 and the second outer truss 220 use cross-layer steel trusses 280, and the height of the cross-layer steel trusses 280 can be two or more floors.

[0056] In this embodiment, the first outer truss 210 and the second outer truss 220 are cross-layer steel trusses. The height of the cross-layer steel trusses can be two or more floors, that is, the cross-layer steel trusses are at least two floors.

[0057] In one embodiment, see Figure 2 as well as Figure 4 The core tube 100 includes a first core tube 100a and a second core tube 100b, and six high-strength cables 240 are arranged. Among them, the three high-strength cables 240 on the left are arranged on the first core tube 100a and the side of the middle steel frame 230 adjacent to the first core tube 100a, and the three high-strength cables 240 on the right are arranged on the second core tube 100b and the side of the middle steel frame 230 adjacent to the second core tube 100b, and the three groups of high-strength cables 240 on the left and right sides are symmetrically and evenly distributed.

[0058] In this embodiment, the core tube 100 includes a first core tube 100a and a second core tube 100b, wherein six high-strength cables 240 are arranged. Three high-strength cables 240 on the left side are arranged on the first core tube 100a and the side of the intermediate steel frame 230 adjacent to the first core tube 100a, and three high-strength cables 240 on the right side are arranged on the side of the second core tube 100b and the side of the intermediate steel frame 230 adjacent to the second core tube 100b. The three high-strength cables 240 on the left and right sides are symmetrically and evenly distributed. This arrangement can balance the force and reduce local stress concentration. It should be understood that the number of high-strength cables 240 is not limited to the above six, and other situations can also be used, which is not limited here.

[0059] In this embodiment, the core tube 100 can be provided in two or more pieces, and an alternating conjoined structure is formed by two or more core tubes 100. Figure 3 The two core tubes 100 can be arranged in parallel, which is conducive to the stability of the connected structure and a high safety factor. Figure 4 The two core tubes 100 can also be arranged in a non-parallel arrangement. In specific geographical locations, this arrangement allows the connected structure to fully utilize the site space. The first core tube 100a is used as the reference, and the second core tube 100b is deflected or offset. Two cantilever trusses 250 are installed on the first core tube 100a, and the second core tube 100b is equipped with corner columns 110. Two cantilever trusses 250 are installed on the second core tube 100b and the corner columns 110. The first outer truss 210 and the second outer truss 220 are respectively arranged on the two outer sides of the connected structure through the above four cantilever trusses 250. This arrangement can enhance the stability and structural strength of the connected structure.

[0060] In one embodiment, see Figure 6 , there are two connected steel structures 200, such as the first connected steel structure 201 and the second connected steel structure 202. In the first connected steel structure 201, the middle cable structure is provided with 6 high-strength cables 240, and each high-strength cable 240 runs through multiple floors of the connected steel structure 200. In order to avoid the beams and columns on the middle steel frame 230, each high-strength cable 240 uses two prestressed cables 241, and the two prestressed cables 241 are respectively provided. The second connected steel structure 202 is also provided with 6 high-strength cables 240 on both sides of the beams and columns of the middle steel frame 230 and arranged symmetrically. Each high-strength cable 240 runs through multiple floors of the connected steel structure 200. In order to avoid the beams and columns on the middle steel frame 230, each high-strength cable 240 uses two prestressed cables 241. The two prestressed cables 241 are respectively arranged on both sides of the beams and columns of the middle steel frame 230 and are arranged symmetrically.

[0061] In this embodiment, the intermediate cable structures of the first and second connected steel structures 201, 202 each independently utilize high-strength cables 240. This can reduce the transmission of structural risks from the second connected steel structure 202 to the first connected steel structure 201, or vice versa. This provides high structural strength, safety, and reliability, and enables the formation of taller and larger connected structures. It should be understood that the connected steel structures 200 are not limited to the first and second connected steel structures 201, 202, and that the high-strength cables 240 provided in each connected steel structure 200 are not limited to the six cables described above. Other configurations are possible and are not intended to be limiting.

[0062] In one embodiment, see Figure 2 The angle between the high-strength cable 240 and the floor plane is 30°-70°.

[0063] In this embodiment, the angle between the high-strength cable 240 and the floor plane is 30°-70°, which can make the cable force efficiency relatively high and also help to reduce the bending moment internal force of the middle steel frame 230.

[0064] In one embodiment, see Figure 5 The spacing between the first and second outer trusses 210, 220 is 20-30 meters. The intermediate cable structure is located between the first and second outer trusses 210, 220. This structure creates two spans in the width direction of the connected structure, each spanning 10-15 meters to ensure the clear height of the connected floors. Steel beams 260 connect the first and second outer trusses 210, 220, respectively, to the intermediate cable structure on either side.

[0065] In one embodiment, see Figure 5 Horizontal diagonal bars 270 are provided in the bottom and top floor planes of the first outer truss 210 and the second outer truss 220. The horizontal diagonal bars 270 are used to ensure that the connected structure can still bear the load as a whole when the floor concrete is damaged.

[0066] In this embodiment, horizontal diagonal rods 270 are provided in the bottom and top floor planes of the first and second outer trusses 210, 220. The horizontal diagonal rods 270 can be arranged evenly and continuously, and the horizontal diagonal rods 270 on the left and right sides are arranged symmetrically, which provides a reasonable force distribution and avoids the phenomenon of localized stress concentration on the horizontal diagonal rods 270. It should be understood that the arrangement of the horizontal diagonal rods 270 is not limited to the above-mentioned even, continuous, and symmetrical arrangement, and other arrangements are also possible, which is not limited here.

[0067] In this example, see Figure 7The temporary tensioning device 242 used to tension two prestressed cables 241 in the high-strength cable 240 is equipped with a device node 2421, a temporary first cable 2422, a temporary second cable 2423, and a temporary lug 235. This device connects the two prestressed cables 241, allowing for simultaneous application of prestressing force. The device node 2421 of the temporary tensioning device 242 also maintains a certain distance between the two parallel prestressed cables 241, ensuring that the two parallel prestressed cables 241 are closely attached to either side of the middle steel frame 230.

[0068] For details, please refer to Figure 7 The temporary tensioning device 242 for the two prestressed cables 241 in the high-strength cable 240 includes a device node 2421, a temporary first cable 2422, a temporary second cable 2423, and a temporary lug 235. This device connects the two prestressed cables 241, allowing for simultaneous application of prestressing force. The device node 2421 of the temporary tensioning device 242 also maintains a certain distance between the two parallel prestressed cables 241, ensuring that the two parallel prestressed cables 241 are closely attached to either side of the intermediate steel frame 230. As shown in the figure, one end of the high-strength cable 240 is hinged to the bottom beam-column node of the middle frame steel frame 230. The middle frame steel frame 230 includes the bottom middle frame steel beam 231, the second middle frame steel beam 232 and the steel column. The bottom beam-column node is the part where the bottom steel beam 260 is connected to the steel column. A first ear plate 234 is provided on the bottom beam-column node. The anchors 243 on the two prestressed cables 241 in the high-strength cable 240 are connected to their corresponding ear plates through a pin shaft 244.

[0069] On the other hand, see Figure 10 The present invention also provides a method for realizing the novel hybrid structure of the above-mentioned cross-layer steel truss and cable structure, which specifically includes the following steps:

[0070] S100. Construct at least two adjacent core tubes.

[0071] Specifically, the core tube 100 is constructed first, and then the truss 250 is cantilevered on the core tube 100 . The cantilevered truss 250 is used to support the first outer truss 210 and the second outer truss 220 .

[0072] S200: Arrange a tire frame between two adjacent core tubes.

[0073] A tire frame is provided between two adjacent core tubes 100 , and the tire frame is used to support the connected steel structure 200 , so as to facilitate the hoisting, assembly and fixation of the connected steel structure 200 .

[0074] S300. Construct the connected steel structure on the frame.

[0075] First, install the first outer truss 210, the second outer truss 220 and the middle steel frame 230, then use the steel beam 260 to connect the three structures into a whole, and then lay the steel truss floor slab on the steel beam 260 to form a floor, and then continue to install the connected upper structure on the floor. Among them, the first outer truss 210 and the second outer truss 220 are both provided with horizontal diagonal rods 270 in the bottom and top floor planes. The horizontal diagonal rods 270 can be connected to the middle steel frame 230. The horizontal diagonal rods 270 are used to ensure that the connected structure can still bear the force as a whole when the floor concrete is damaged.

[0076] S400. Install high-strength cables between the middle steel frame and the core tube, and apply prestress to the high-strength cables for the first time.

[0077] For the first time, 30-60% prestress is applied to the high-strength cables.

[0078] S500, tire unloading stand;

[0079] S600, pouring concrete on the connected steel structure;

[0080] S700. Apply prestress to the high-strength cables for the second time.

[0081] A 100% prestress is applied to the high-strength cable 240 for the second time.

[0082] In summary, the present invention provides a novel hybrid structure of a cross-layer steel truss and a cable structure, and a method for implementing the hybrid structure. The hybrid structure comprises: at least two core tubes and a hybrid steel structure disposed between the core tubes. The hybrid steel structure comprises: a cantilever truss, two cross-layer steel trusses, and an intermediate truss cable structure. The intermediate truss cable structure comprises an intermediate truss steel frame and high-strength cables, each of which is symmetrically attached to both sides of the frame. Applying pre-tension to the high-strength cables not only helps reduce the bending moment of the steel frame and adjust the deformation difference between it and the two outer cross-layer steel trusses, but also reasonably controls the cables to always be in a tensioned state, thereby ensuring the load-bearing capacity and safety of the hybrid structure. The present invention utilizes a hybrid form of a cross-layer steel truss and a cable structure to construct a novel hybrid structure. By fully utilizing the advantages of the high strength of the cables, the advantage of a small cross-section increases the usable area and achieves beautiful interior design. The two cables per cable also allow for the possibility of replacing the cables without interrupting the building's function during future operations.

[0083] It should be understood that the application of the present invention is not limited to the above examples. For those skilled in the art, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A novel hybrid structure of a cross-layer steel truss and a cable structure, comprising at least two core tubes and a connected steel structure disposed between the core tubes, wherein the core tubes are used to support the connected steel structure, characterized in that: The connected steel structure includes: a cantilever truss, a first outer truss, a second outer truss, and a middle cable structure; The cantilever truss is arranged on the core tube, and the first outer truss and the second outer truss are both supported on the cantilever truss. The core tube includes a first core tube and a second core tube. The first core tube and the second core tube are arranged non-parallel to each other, and the second core tube is deflected or offset relative to the first core tube. The first core tube is provided with the cantilever truss, and the second core tube is also provided with the cantilever truss. The first outer truss and the second outer truss are arranged on both outer sides of the first core tube and the second core tube through the cantilever truss, and the middle cable structure is located between the first outer truss and the second outer truss. The intermediate truss cable structure includes an intermediate truss steel frame and high-strength cables, the upper end anchorage of the high-strength cables is connected to the node of the core tube, the lower end of the high-strength cables is a tensioning end, and the anchorage of the tensioning end is connected to the bottom beam-column node of the intermediate truss steel frame; The high-strength cables are arranged in multiple channels, and each channel of the high-strength cables runs through multiple floors of the connected steel structure. In order to avoid the beams and columns on the middle steel frame, each channel of the high-strength cables uses two prestressed cables. The two prestressed cables are respectively tightly attached to both sides of the middle steel frame and are arranged symmetrically.

2. The novel hybrid structure of cross-layer steel trusses and cable structures according to claim 1 is characterized in that: The first outer truss and the second outer truss are cross-layer steel trusses, and the height of the cross-layer steel trusses can be two or more floors.

3. The novel hybrid structure of cross-layer steel trusses and cable structures according to claim 1 is characterized in that: The core tube includes a first core tube and a second core tube, and the high-strength cables are arranged as six cables, wherein the three high-strength cables on the left are arranged on the first core tube and the side of the middle steel frame adjacent to the first core tube, and the three high-strength cables on the right are arranged on the second core tube and the side of the middle steel frame adjacent to the second core tube, and the three high-strength cables on the left and right sides are symmetrically and evenly distributed.

4. The novel hybrid structure of cross-layer steel trusses and cable structures according to claim 1 is characterized in that: The included angle between the high-strength cable and the floor plane is 30°-70°.

5. The novel hybrid structure of cross-layer steel trusses and cable structures according to claim 1 is characterized in that: The distance between the first outer truss and the second outer truss is 20~30m; the middle cable structure is located between the first outer truss and the second outer truss. The middle cable structure forms two spans in the width direction of the connected structure, and each span is 10~15m to ensure the net height of the connected floors. The two sides of the middle cable structure are connected to the first outer truss and the second outer truss by steel beams respectively.

6. The novel hybrid structure of cross-layer steel trusses and cable structures according to claim 1 is characterized in that: Horizontal diagonal bars are provided in the bottom and top floor planes of the first outer truss and the second outer truss, and the horizontal diagonal bars are used to ensure that the connected structure can still bear the stress as a whole when the floor concrete is damaged.

7. A method for realizing a novel hybrid structure of a cross-layer steel truss and a cable structure as claimed in any one of claims 1 to 6, characterized in that: The specific steps include: Construct at least two adjacent cores; A tire frame is provided between two adjacent core tubes; Constructing the connected steel structure on the tire frame; Install high-strength cables between the middle steel frame and the core tube, and apply prestress to the high-strength cables for the first time; tire unloading stand; pouring concrete on the connected steel structure; The prestress is applied to the high-strength cables for the second time.

8. The method for realizing a novel hybrid structure of a cross-layer steel truss and a cable structure according to claim 7 is characterized in that: The steps of installing high-strength cables between the middle steel frame and the core tube and applying prestress to the high-strength cables for the first time include: For the first time, 30-60% prestress is applied to the high-strength cables.

9. The method for realizing a novel hybrid structure of a cross-layer steel truss and a cable structure according to claim 7 is characterized in that: The step of applying prestress to the high-strength cable for the second time comprises: A second time, 100% prestress is applied to the high-strength cables.

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