Super high-rise frame-core tube building structure

Abstract

The invention relates to the technical field of super high-rise building structures, and discloses a super high-rise frame-core tube building structure which comprises an upper frame-core tube, a high-position conversion structure and a lower frame-core tube, and the two ends of the core tube are connected with the upper frame-core tube and the lower frame-core tube correspondingly. The concrete filled steel tubular columns are located on the periphery of the core tube, the upper ends of the concrete filled steel tubular columns are connected with the upper end of the core tube through the floor concrete beams, the concrete floor system is laid on the tops of the floor concrete beams, and the upper ends of the transfer truss web members are obliquely connected with the lower end of the upper frame-core tube. The lower end of the transfer truss web member is obliquely connected with the lower end of the concrete filled steel tubular column, and the two ends of the concrete filled steel tubular column are connected with the upper frame-core tube and the lower frame-core tube respectively. The high clear height of the building is obtained to the maximum extent, and meanwhile the structural self-weight is reduced as much as possible; and the high pursuit of light, simple and wide space structure of architects is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of super high-rise building structures, and in particular to a super high-rise frame-core tube building structure. Background Art

[0002] In the past decade, the traditional frame-core tube structural system has been unable to meet the owners' needs for building space and use. Seeking a new external frame form to maximize the building space has been one of the hot research issues in recent years.

[0003] At present, the common super high-rise structure is the frame-core tube structure. There are many options for the structural layout of the use area outside the super high-rise core tube, mainly including: solid flat floor, reinforced concrete beam and slab, steel beam + concrete floor composite floor, reinforced concrete ribbed floor, etc. Under the constraints of building conditions and limited floor height, if a higher net height effect is to be achieved according to the general conventional beam and slab structure layout plan, it will not be able to meet the higher net height requirements of the building; the solid flat floor plan is not conducive to the structure due to the large thickness of the slab and the large self-weight of the structure. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the above prior art and provide a super high-rise frame-core tube building structure.

[0005] The purpose of the present invention is achieved through the following technical solutions: a super high-rise frame-core tube building structure includes an upper frame-core tube, a high-position conversion structure and a lower frame-core tube, the high-position conversion structure includes a core tube, a steel tube concrete column, a conversion truss web, a floor concrete beam and a concrete floor slab, the two ends of the core tube are respectively connected to the upper frame-core tube and the lower frame-core tube, the steel tube concrete column is located at the periphery of the core tube, the upper end of the steel tube concrete column is connected to the upper end of the core tube through the floor concrete beam, the concrete floor slab is laid on the top of the floor concrete beam, the upper end of the conversion truss web is obliquely connected to the lower end of the upper frame-core tube, the lower end of the conversion truss web is obliquely connected to the lower end of the steel tube concrete column, and the two ends of the steel tube concrete column are respectively connected to the upper frame-core tube and the lower frame-core tube.

[0006] A better choice, the upper frame-core tube includes a core tube, concrete columns, outer frame concrete beams, hollow slab floor hidden beams, hollow floor and upper underpinning structure columns, the core tube is connected to the core tube of the high-position conversion structure, the concrete columns are arranged on the outer periphery of the core tube, the concrete columns are connected to the core tube through the hollow slab floor hidden beams, the lower ends of the concrete columns are connected to the upper ends of the steel tube concrete columns to form a connection node, the upper ends of two adjacent steel tube concrete columns are connected through the outer frame concrete beams, the outer frame concrete beams, the hollow slab floor hidden beams and the core tube form a hollow floor installation frame, the hollow floor is installed on the hollow floor installation frame, the upper ends of the conversion truss webs are connected to the outer frame concrete beams to form a supporting connection, and the lower ends of the upper underpinning structure columns are connected to the supporting connection.

[0007] A better choice is that the connection nodes include column longitudinal reinforcement, column dense stirrups, additional steel bars, beam reinforcement, inner lining pipe, outer pipe and the first concrete layer. The column dense stirrups, additional steel bars and beam reinforcement are connected to the column longitudinal reinforcement in sequence. The ends of the column longitudinal reinforcement are welded to the outer wall of the outer pipe, and the inner lining pipe is welded to the inner wall of the outer pipe. The first concrete layer is covered on the column longitudinal reinforcement, column dense stirrups, additional steel bars, beam reinforcement, outer pipe and inner lining pipe.

[0008] A better choice is that the hollow floor includes a first slab surface reinforcement, a first core mold, a first tension bar, a first slab bottom reinforcement and a second concrete layer. The first slab surface reinforcement and the first slab bottom reinforcement are respectively arranged at two ends of the first core mold. The first slab surface reinforcement is connected to the first slab bottom reinforcement through the first tension bar 1203. A first drainage hole is provided at the bottom of the first core mold. The first slab surface reinforcement, the first core mold, the first tension bar and the first slab bottom reinforcement are all covered by the second concrete layer.

[0009] A better choice is that the lower frame-core tube includes floor steel beams, composite floor slabs, steel tube concrete columns, outer frame steel beams and core tubes. The upper ends of the steel tube concrete columns are connected to the lower ends of the steel tube concrete columns of the high-level transfer structure, and two adjacent steel tube concrete columns are connected by outer frame steel beams. The steel tube concrete columns are connected to the core tube through floor steel beams. The composite floor slabs are laid on the floor steel beams. The outer frame steel beams, core tubes and floor steel beams form a composite floor slab installation frame, and the composite floor slabs are installed on the composite floor slab installation frame.

[0010] For a better choice, the width of the core tube should not be less than 1 / 15 of the structure height.

[0011] For a better choice, the horizontal and vertical distributed reinforcement ratio of the core tube should be ≥ 0.6%.

[0012] A better option is to convert the cross-section of the truss web into a box-type structure.

[0013] The present invention has the following advantages and beneficial effects compared with the prior art:

[0014] The present invention can change the classic super-high-rise frame-core tube building structure from the bottom to the top according to the building function requirements through the lower frame-core tube, the high-position conversion structure and the upper frame-core tube, and make full use of the high-position conversion layer structure for transition, so as to ensure the effective transmission of vertical load force, make full use of material properties, have high bearing capacity and good economic effect; cleverly use the super-high-rise refuge layer to partially convert the columns required to be added for the upper high-end matching by setting the high-position conversion structure, and at the same time use a hollow flat floor between the outer frame and the core tube to form a beamless and column-free open space, meet the requirements of flexible arrangement of subsequent use of building functions, maximize the higher net height of the building, and minimize the dead weight of the structure; realize the architect's high pursuit of lightness, simplicity and openness of the spatial structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a high-position transfer layer structure of a super-high-rise frame-core tube building structure of the present invention;

[0016] Figure 2 It is a schematic plan view of an office floor of a super high-rise frame-core tube building structure of the present invention;

[0017] Figure 3 It is a schematic plan view of a refuge floor of a super high-rise frame-core tube building structure of the present invention;

[0018] Figure 4 It is a schematic plan view of a transfer layer of a super high-rise frame-core tube building structure of the present invention;

[0019] Figure 5 It is a schematic plan view of a supporting layer of a super high-rise frame-core tube building structure of the present invention;

[0020] Figure 6 for Figure 3 or Figure 4 A cross-sectional view at point A;

[0021] Figure 7 for Figure 3 or Figure 4 A cross-sectional view at point B;

[0022] Figure 8 for Figure 6 or Figure 7 A cross-sectional view at C;

[0023] Fig. 9 It is a schematic diagram of a hollow floor of a super high-rise frame-core tube building structure of the present invention;

[0024] Fig.10 It is a schematic diagram of a connection node of a super high-rise frame-core tube building structure of the present invention;

[0025] Fig.11 It is a schematic diagram of the connection between the steel bars and the steel tube wall of a super high-rise frame-core tube building structure of the present invention;

[0026] Fig.12 It is a schematic diagram of the connection between the combined floor slab and the floor steel beam of a super high-rise frame-core tube building structure of the present invention;

[0027] The markings of the components in the attached drawings are as follows: 1-core tube; 2-concrete-filled steel tube column; 201-inner lining tube; 202-outer tube; 3-outer frame steel beam; 4-floor steel beam; 5-composite floor; 501-shear studs; 502-concrete floor slab; 6-concrete column; 601-column longitudinal reinforcement; 602-column reinforcement stirrups; 603-additional reinforcement; 7-outer frame concrete beam; 701-H-shaped steel frame; 702-studs; 703-beam body; 704- Beam reinforcement; 8-floor concrete beam; 9-concrete floor; 10-upper replacement structure column; 11-hollow slab floor hidden beam; 12-hollow floor; 1201-first plate surface reinforcement; 1202-first core mold; 1203-first tension reinforcement; 1204-first plate bottom reinforcement; 1205-first drainage and air leakage hole; 1206-second concrete layer; 13-connection node; 14-conversion truss web; 15-connection between steel bar and steel pipe wall. DETAILED DESCRIPTION

[0028] The purpose of the present invention is further described in detail below with reference to the accompanying drawings and specific examples. The examples cannot be described one by one here, but the implementation methods of the present invention are not therefore limited to the following examples.

[0029] like Figure 1 , 3As shown in Figures 4, 6 and 7, a super high-rise frame-core tube building structure includes an upper frame-core tube, a high-position conversion structure and a lower frame-core tube connected in sequence; the upper frame-core tube includes a core tube 1, a concrete column 6, an outer frame concrete beam 7, a hollow flat floor hidden beam 11, a hollow floor 12 and an upper underpinning structure column 10; the high-position conversion structure includes a core tube 1, a steel tube concrete column 2, a conversion truss web 14, a floor concrete beam 8 and a concrete floor 9, and the cross section of the conversion truss web 14 is a box-type structure; the lower frame-core tube includes a core tube 1, a floor steel beam 4, a steel tube concrete column 2, an outer frame steel beam 3 and a combined floor 5. The steel tube concrete column 2 is arranged on the periphery of the core tube 1. The upper end of the core tube 1 of the high-position conversion structure is connected to the lower end of the core tube 1 of the upper frame-core tube. The lower end of the core tube 1 of the high-position conversion structure is connected to the upper end of the core tube 1 of the lower frame-core tube. The upper end of the steel tube concrete column 2 is connected to the upper end side of the core tube 1 through the floor concrete beam 8. The concrete floor 9 is laid on the top of all the floor concrete beams 8. The floor thickness of the concrete floor 9 is greater than 120mm, and it is suitable to have double-layer bidirectional reinforcement, and the reinforcement ratio of each layer in each direction should not be less than 0.25%. The lower end of the concrete column 6 is connected to the upper end of the steel tube concrete column 2 to form a connection node 13. The upper end side of two adjacent steel tube concrete columns 2 is connected by the outer frame concrete beam 7. The lower end side of two adjacent steel tube concrete columns 2 is connected by the outer frame steel beam 3. The lower end of the steel tube concrete column 2 of the high-level conversion structure is connected to the top of the steel tube concrete column 2 of the lower frame-core tube. The lower end side of the core tube 1 of the high-level conversion structure is connected to the lower end side of the steel tube concrete column 2 through the floor steel beam 4 of the lower frame-core tube. All the combined floor slabs 5 are laid on the top of the floor steel beam 4. The conversion truss web member 14 is inclined, the upper end of the conversion truss web member 14 is connected to the outer frame concrete beam 7 to form a supporting connection, and the lower end of the conversion truss web member 14 is connected to the steel tube concrete column 2. According to design requirements, the lower end of the upper underpinning structure column 10 can be connected to the top of the supporting connection. The outer frame steel beam 3, the steel tube concrete column 2 and the outer frame concrete beam 7 form a composite floor installation frame, and the composite floor 5 is installed on the composite floor installation frame.

[0030] The high-position conversion structure is used to increase the support and refuge of the upper supporting structure column 10 (i.e., the refuge layer), completing the transformation from the lower frame-core tube to the upper frame-core tube. The lower frame-core tube is used for office (i.e., the office layer). The upper frame-core tube is used as a high-end supporting facility (i.e., the supporting layer).

[0031] like Fig.10As shown, each connection node 13 includes column longitudinal reinforcement 601, column dense stirrups 602, additional steel bars 603, beam reinforcement 704, inner lining pipe 201, outer pipe 202 and the first concrete layer. Column longitudinal reinforcement 601, column dense stirrups 602, additional steel bars 603 are part of the concrete column 6. Beam reinforcement 704 is part of the outer frame concrete beam 7. Inner lining pipe 201 and outer pipe 202 are part of the steel tube concrete column 2. Column dense stirrups 602, additional steel bars 603 and beam reinforcement 704 are connected to column longitudinal reinforcement 601 from top to bottom, and the end of column longitudinal reinforcement 601 is welded to the outer wall of outer pipe 202. Inner lining pipe 201 is welded to the inner wall of outer pipe 202. The first concrete layer covers column longitudinal reinforcement 601, column dense stirrups 602, additional steel bars 603, beam reinforcement 704, outer pipe 202 and inner lining pipe 201. As shown Figure 2 As shown, the lower frame-core tube is a multi-layer office layer, and the multi-layer office layers are stacked in sequence from bottom to top, with a total of forty-one layers. Each office layer includes a core tube 1, a steel tube concrete column 2, an outer frame steel beam 3, a floor steel beam 4 and a composite floor 5. The upper end of the steel tube concrete column 2 is connected to the lower end of the steel tube concrete column 2 of the high-level conversion structure, and the top of the core tube 1 of the office layer is connected to the bottom of the core tube 1 of the high-level conversion structure. The steel tube concrete column 2 is located on the outer periphery of the core tube 1, and the lower end side of the steel tube concrete column 2 is connected to the lower end side of the core tube 1 through the floor steel beam 4. The composite floor 5 is laid on the top of the floor steel beam 4.

[0032] like Figure 5 As shown, the upper frame-core tube is a multi-layer supporting layer, and the multi-layer supporting layers are stacked in sequence from bottom to top. Each supporting layer includes a core tube 1, a concrete column 6, an outer frame concrete beam 7, a floor concrete beam 8, a hollow slab floor hidden beam 11 and a hollow floor 12. The bottom of the core tube 1 of the supporting layer is connected to the top of the core tube 1 of the high-position conversion structure. The concrete columns 6 are all located on the periphery of the core tube 1. The lower end side of the concrete column 6 of the supporting layer is connected to the bottom side of the core tube 1 of the supporting layer through the hollow slab floor hidden beam 11, and the outer frame concrete beam 7, the hollow slab floor hidden beam 11 and the core tube 1 form a hollow floor installation frame, and the hollow floor is installed on the hollow floor installation frame. The lower end of the concrete column 6 of the supporting layer is connected to the upper end of the steel tube concrete column 2 of the high-position conversion structure, and the lower end of the upper underpinning structure column 10 of the upper frame-core tube is connected to the outer frame concrete beam 7 of the high-position conversion structure. In order to improve the ductility of the concrete column 6, the stirrups are densely packed throughout the entire height, and the volumetric stirrup ratio is controlled to be no less than 1.5%.

[0033] The core tube 1 is used to bear part of the gravity load and most of the horizontal load. The core tube 1 must have sufficient lateral stiffness, bearing capacity, deformation capacity and ductility. All core tubes 1 in this implementation need to improve the distribution reinforcement ratio of the core tube 1 wall and the configuration requirements of the tie bars. The horizontal and vertical distribution reinforcement ratio of the outer wall of the core tube 1 at the bottom reinforcement part of the core tube 1 should not be less than 0.6%, and the hidden column reinforcement ratio is increased to 1.6%; the horizontal and vertical distribution reinforcement ratio of the shear wall in other parts of the core tube 1 should not be less than 0.4%.

[0034] like Fig. 9 As shown, the hollow floor 12 is provided with a first plate surface reinforcement 1201, a first core mold 1202, a first tie bar 1203, a first plate bottom reinforcement 1204 and a second concrete layer. The first plate surface reinforcement 1201 and the first plate bottom reinforcement 1204 are respectively arranged at the upper and lower ends of the first core mold 1202. The first plate surface reinforcement 1201 is connected to the first plate bottom reinforcement 1204 through the first tie bar 1203. A first water and air discharge hole 1205 is provided at the bottom of the first core mold 1202. The first plate surface reinforcement 1201, the first core mold 1202, the first tie bar 1203 and the first plate bottom reinforcement are all covered by the second concrete layer. The building structure in this embodiment is a high-position conversion structure and a lower frame-core tube (i.e., an office floor) below the 42nd floor, with a total height of 193.5 meters, consisting of steel tube concrete columns 2, outer frame steel beams 3, floor steel beams 4, combined floor slabs 5 and core tube 1. A high-position conversion structure is set on the 41st refuge floor to convert the upper supporting structure columns 10 of the upper frame-core tube. The 42nd floor and above (i.e., the supporting floor), the 10th floor has a height of 39 meters, and consists of concrete columns 6, outer frame concrete beams 7, upper supporting structure columns 10, hollow flat floor slab hidden beams 11, hollow floor slabs 12 and core tube 1. The horizontal force and the resulting overturning moment are borne by the core tube 1 and the concrete columns 6. According to the functional requirements of the building, the main floor height of the lower part of the tower below 41 floors (i.e., the office floor) is 4.5 meters, and its main function is office. The floor height of the upper part of the tower above 42 floors (i.e., the supporting floor) is 3.9 meters, and its main function is high-end supporting. The upper floor height changes and the functional requirements change. The building structure of this embodiment partially converts the upper high-end supporting columns required to be added by setting a high-position conversion structure. At the same time, a hollow flat floor is used between the outer frame and the core tube 1 to form a beamless and column-free open use space, which meets the requirements of flexible layout of subsequent use of the building function, maximizes the higher net height of the building, and minimizes the deadweight of the structure. The building structure in this embodiment is to solve the problems that the building function of the existing frame-core tube structure changes from the bottom to the top, the requirements for the building space are high, and a higher net height and flexible use space need to be obtained.

[0035] The present invention provides an innovative system of super high-rise frame-core tube building structure. The key points of the system are: 1) the classic super high-rise frame-core tube building structure is changed from the bottom to the top according to the building function requirements, and the high-position conversion layer structure is fully utilized for transition to ensure the effective transmission of vertical load force, and the material properties are fully utilized to have a high bearing capacity and good economic effect; 2) the system cleverly uses the super high-rise refuge layer to partially convert the upper high-end supporting columns required to be added by setting a high-position conversion structure, and at the same time, a hollow flat floor is used between the outer frame and the core tube to form a beamless and columnless open space, which meets the requirements of flexible arrangement of subsequent use of building functions, maximizes the highest net height of the building, and minimizes the deadweight of the structure. The architect's high pursuit of lightness, simplicity, and openness of the spatial structure is realized.

[0036] The technical effects of the building structure in this embodiment are as follows:

[0037] In order to achieve the seismic design goal of "no damage in small earthquakes, repairable in moderate earthquakes, and not collapsing in large earthquakes" and improve the seismic safety of the structure, this building structure is designed based on performance for the lateral force resisting structure. According to the Technical Code for Concrete Structures of High-rise Buildings of Guangdong Province (DBJ / T 15-92-2021), the seismic performance target is set at Class C. The performance levels and performance targets of structural components under various levels of earthquakes are shown in Table 1.

[0038] Table 1 C-level seismic performance level of structural components

[0039]

[0040]

[0041] The calculations in the moderate and major earthquake stages only consider the combination of vertical load and seismic action, and do not consider the combination of seismic action and wind load. The calculation of the internal force of moderate earthquakes adopts the equivalent elastic method; the calculation of the internal force of major earthquakes adopts the equivalent elastic method and the elastoplastic dynamic time history analysis method respectively.

[0042] The above specific implementation modes are preferred embodiments of the present invention and cannot be used to limit the present invention. Any other changes or other equivalent replacement methods that do not deviate from the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. A super high-rise frame-core tube building structure, characterized by: It includes an upper frame-core tube, a high-position conversion structure and a lower frame-core tube. The high-position conversion structure includes a core tube, a steel tube concrete column, a conversion truss web, a floor concrete beam and a concrete floor slab. The two ends of the core tube are respectively connected to the upper frame-core tube and the lower frame-core tube. The steel tube concrete column is located at the outer periphery of the core tube. The upper end of the steel tube concrete column is connected to the upper end of the core tube through the floor concrete beam. The concrete floor slab is laid on the top of the floor concrete beam. The upper end of the conversion truss web is obliquely connected to the lower end of the upper frame-core tube, the lower end of the conversion truss web is obliquely connected to the lower end of the steel tube concrete column, and the two ends of the steel tube concrete column are respectively connected to the upper frame-core tube and the lower frame-core tube.

2. A super high-rise frame-core tube building structure according to claim 1, characterized in that: The upper frame-core tube includes a core tube, concrete columns, outer frame concrete beams, hollow slab floor hidden beams, hollow floor and upper underpinning structure columns. The core tube is connected to the core tube of the high-position conversion structure. The concrete columns are arranged on the outer periphery of the core tube. The concrete columns are connected to the core tube through the hollow slab floor hidden beams. The lower ends of the concrete columns are connected to the upper ends of the steel tube concrete columns to form a connection node. The upper ends of two adjacent steel tube concrete columns are connected through the outer frame concrete beams. The outer frame concrete beams, the hollow slab floor hidden beams and the core tube form a hollow floor installation frame. The hollow floor is installed on the hollow floor installation frame. The upper ends of the conversion truss webs are connected to the outer frame concrete beams to form a supporting connection. The lower ends of the upper underpinning structure columns are connected to the supporting connection.

3. A super high-rise frame-core tube building structure according to claim 2, characterized in that: The connection nodes include column longitudinal reinforcement, column dense stirrups, additional steel bars, beam reinforcement, inner lining pipe, outer pipe and the first concrete layer. The column dense stirrups, additional steel bars and beam reinforcement are connected to the column longitudinal reinforcement in sequence. The ends of the column longitudinal reinforcement are welded to the outer wall of the outer pipe, and the inner lining pipe is welded to the inner wall of the outer pipe. The first concrete layer covers the column longitudinal reinforcement, column dense stirrups, additional steel bars, beam reinforcement, outer pipe and inner lining pipe.

4. A super high-rise frame-core tube building structure according to claim 2, characterized in that: The hollow floor comprises a first slab surface reinforcement, a first core mold, a first tensioning reinforcement, a first slab bottom reinforcement and a second concrete layer. The first slab surface reinforcement and the first slab bottom reinforcement are respectively arranged at two ends of the first core mold. The first slab surface reinforcement is connected to the first slab bottom reinforcement through the first tensioning reinforcement 1203. A first drainage hole is provided at the bottom of the first core mold. The first slab surface reinforcement, the first core mold, the first tensioning reinforcement and the first slab bottom reinforcement are all covered by the second concrete layer.

5. A super high-rise frame-core tube building structure according to claim 1, characterized in that: The lower frame-core tube includes floor steel beams, composite floor slabs, steel tube concrete columns, outer frame steel beams and core tubes. The upper ends of the steel tube concrete columns are connected to the lower ends of the steel tube concrete columns of the high-position transfer structure. Two adjacent steel tube concrete columns are connected by outer frame steel beams. The steel tube concrete columns are connected to the core tubes through floor steel beams. The composite floor slabs are laid on the floor steel beams. The outer frame steel beams, core tubes and floor steel beams form a composite floor slab installation frame. The composite floor slabs are installed on the composite floor slab installation frame.

6. A super high-rise frame-core tube building structure according to any one of claims 1, 2 and 5, characterized in that: The width of the core tube should not be less than 1 / 15 of the structure height.

7. A super high-rise frame-core tube building structure according to any one of claims 1, 2 and 5, characterized in that: The horizontal and vertical distributed reinforcement ratio of the core tube is ≥0.6%.

8. A super high-rise frame-core tube building structure according to claim 1, characterized in that: The cross section of the web of the conversion truss is a box-type structure.

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