CN110306673A - A multi-storey large-space building structure - Google Patents

Abstract

A kind of multistory large spaces building structure, suitable for being built to the not high multistory large spaces of absolute span demand, including compound building structure main body, the building structure main body includes: wall, the wall is the horizontal force that concrete side bears the building structure main body to stress balance wall, while for providing vertical space；Multilayer girderless floor, between the wall and with the wall connecting；And multiple support columns, each support column are free profile swing column, for undertaking the vertical force of vertical direction, the both ends of each support column are hinged with the girderless floor respectively.The present invention improves the service efficiency in space, reduces the visual impact to space permeability, solves the problems, such as the horizontal force of building.

Description

A multi-storey large-space building structure

technical field

The invention relates to a building structure, in particular to a multi-storey large-space building structure.

Background technique

For multi-storey large-space buildings, the prior art generally adopts column-free large-span structures and beam-column frame structures. The use of long-span structures requires a large structural beam height, especially in multi-storey buildings, where the space utilization efficiency is not high; the use of frame structures is limited by the regular column network, and the choice of spatial models for buildings is limited. Under the requirements, the size of the pillars will also restrict the space transparency.

Contents of the invention

The technical problem to be solved by the present invention is to provide a multi-layer large-space building structure for the above-mentioned defects of the prior art.

In order to achieve the above object, the present invention provides a multi-storey large-space building structure, which is suitable for multi-storey large-space buildings with low absolute span requirements, wherein it includes a composite building structure body, and the building structure body includes:

The wall, the wall is a concrete lateral force balance wall, which is used to provide a vertical building space and bear the horizontal force of the main body of the building structure;

a multi-story beamless floor between and connected to the walls; and

A plurality of support columns, each of which is a free-distributed swing column, is used to bear the vertical force in the vertical direction, and the two ends of each of the support columns are respectively hinged to the beamless floor.

In the above-mentioned multi-storey large-space building structure, wherein the support columns are freely arranged according to the requirements of the building space, and the slenderness ratio of the support columns can reduce the visual impact on the permeability of the building space.

In the above-mentioned multi-storey large-space building structure, wherein, the beamless floor of each floor is arranged perpendicular to the wall, and punching-resistant steel plates are arranged at the hinge points of the beamless floor of each floor and the supporting columns .

In the above-mentioned multi-storey large-space building structure, wherein, the beamless floor of each floor is provided with double-layer bidirectional steel bars for transmitting horizontal loads, and the tensile stress of the concrete of the beamless floor of each floor is less than or equal to zero.

In the above-mentioned multi-storey large-space building structure, the axial compression ratio of the supporting columns is 0.5-1.0, and the slenderness ratio of the supporting columns is less than or equal to 150.

In the above-mentioned multi-storey large-space building structure, the axial compression ratio of the supporting columns is 0.8.

In the above-mentioned multi-storey large-space building structure, the thickness of the wall is 200-700 mm, and at least double-layer two-way steel bars are arranged in the wall.

The above-mentioned multi-storey large-space building structure, wherein, the support column is a concrete structural column, and the hinge point between the support column and the beamless floor is a concrete hinge, and the concrete hinge includes a plurality of longitudinally stressed steel bars and columns Stirrups, a plurality of longitudinal stressed steel bars are arranged crosswise with the hinge point as the center, one end of the longitudinal stressed steel bars is connected to the reinforcement of the support column, and the other end of the longitudinal stressed steel bars is connected to the The punching-shear resistant steel plates of the beam floor are connected, and the column stirrups are arranged in parallel between the longitudinal stressed steel bars below the hinge point, and the distance between the hinge point and the support column is the diameter of the support column half of.

The above-mentioned multi-storey large-space building structure, wherein, the support column is a steel structure column, and the hinge point between the support column and the beamless floor is a steel hinge, and the steel hinge includes an outer joint, a spherical joint and a connecting part , the outer joint is arranged in the beamless floor, the spherical joint is installed in the outer joint, and the spherical joint is provided with a connecting part for connecting with the support column, and the height of the connecting part is equal to half the diameter of the support column.

In the above-mentioned multi-storey large-space building structure, wherein the wall body of the elevator room of the main body of the building structure is a cylindrical structure.

Technical effect of the present invention is:

In multi-storey large-space buildings, the composite adaptable multi-storey large-space building structure system of the present invention adopts "freely distributed swinging columns + concrete lateral force balance wall", and the structural height of the large-span system in the prior art is significantly reduced. , improving the efficiency of space use; compared with the beam-column frame structure of the prior art, a relatively free layout of the swinging columns can be realized according to the needs of the space, and the large slenderness ratio of the swinging columns reduces the visual impact on the permeability of the space . The concrete wall provides the vertical building space and at the same time solves the problem of horizontal stress of the building. The free thin column solves the problem of gravity and brings the possibility of flexible layout of the building. The innovation of the model provides system guarantee and has important practical value.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is a schematic diagram of the building structure main body of an embodiment of the present invention;

Fig. 2 is the concrete hinge schematic diagram of an embodiment of the present invention;

Fig. 3 is a schematic diagram of a steel hinge according to an embodiment of the present invention.

Among them, reference signs

1 wall

2 beamless floor

3 support columns

4 hinge points

5 foundations

6 punching resistant steel plate

7 Longitudinal stress reinforcement

8-post stirrup

9 outer joints

10 spherical joints

11 Connecting part

Detailed ways

Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

Referring to FIG. 1 , FIG. 1 is a schematic diagram of a building structure main body according to an embodiment of the present invention. The multi-storey large-space building structure of the present invention is suitable for multi-storey large-space buildings with low absolute span requirements, and includes a composite adaptive building structure main body of freely distributed swing columns and concrete lateral force balance walls 1, so that The main body of the building structure is built on the foundation 5, including: a wall 1, the wall 1 is a concrete lateral force balance wall 1, which is used to provide a vertical building space while bearing the horizontal force of the main body of the building structure Multi-layer beamless floor 2, located between the walls 1 and connected to the wall 1, each layer of the beamless floor 2 is provided with steel bars for transmitting horizontal loads; and a plurality of support columns 3 , each of the support columns 3 is a freely distributed swing column, used to bear the vertical force (dead load + live load) in the vertical direction, and the two ends of each of the support columns 3 are respectively connected to the beamless floor 2 hinged. The support column 3 can be freely arranged according to the requirements of the building space, and the slenderness ratio of the support column 3 can reduce the visual impact on the permeability of the building space. The axial compression ratio of the support column 3 is 0.5-1.0, preferably 0.8, the slenderness ratio of the support column 3 is less than or equal to 150, and does not bear the horizontal load (earthquake load + wind load) of the overall structure. When the side shift of the overall structure is guaranteed to be less than 1/1000, the structure is judged as a non-sway structure, and the stability analysis of the support column 3 is carried out according to Euler's formula. And to ensure the effective force transmission of the beamless floor 2, the index control mainly ensures that the beamless floor 2 is not pulled.

In this embodiment, the beamless floor 2 of each floor is arranged perpendicular to the wall 1 , and punching-resistant steel plates 6 are provided at the hinge points of the beamless floor 2 of each floor and the support columns 3 . The beamless floor 2 on each floor is provided with double-layer two-way steel bars for transferring horizontal loads, and the tensile stress of the concrete of the beamless floor 2 on each floor is less than or equal to zero. The beamless floor 2 can be a general-purpose floor, equipped with double-layer two-way steel bars to transmit horizontal loads, and the tensile stress of the beamless floor 2 can be controlled to meet the specification limit requirements.

The wall body 1 should be arranged as a cylinder structure to bear the horizontal load (earthquake load+wind load) of the whole structure. According to the height of the building, the thickness of the wall 1 can be 200-700 mm, preferably 300-400 mm. At least double-layer two-way steel reinforcement is arranged in the wall 1, and the reinforcement configuration of the wall 1 should implement the requirements of the current relevant national specifications. , the top and bottom structures do not need to be processed, which is a conventional shear wall structure system. The wall body 1 of the elevator car of the main body of the building structure is preferably a cylindrical structure.

Referring to Fig. 2, Fig. 2 is a schematic diagram of a concrete hinge according to an embodiment of the present invention. The support column 3 in this embodiment is a concrete structural column, and the hinge point 4 between the support column 3 and the beamless floor 2 is a concrete hinge, and the concrete hinge includes a plurality of longitudinally stressed steel bars 7 and column stirrups 8. A plurality of the longitudinal stressed reinforcement bars 7 are arranged crosswise with the hinge point 4 as the center, one end of the longitudinal stressed reinforced bars 7 is connected to the reinforcement of the support column 3, and the other end of the longitudinal stressed reinforced bars 7 Connected with the punching-resistant steel plate 6 of the beamless floor 2, the column stirrups 8 are arranged in parallel between the longitudinally stressed steel bars 7 below the hinge point 4, and the column stirrups 8 between The spacing is preferably 50 mm, and the distance between the hinge point 4 and the support column 3 is half of the diameter of the support column 3 . During construction, the position of the steel bars can be fixed as shown in the figure to ensure that the steel bars do not move or deviate. The steel bars at the upper and lower nodes are guaranteed to be anchored to the concrete floor to meet the tensile length LA; the concrete is poured, and the concrete grade shall not be lower than C30; the above steps are repeated until the hinged connection between the support column 3 and the beamless floor 2 is completed. When the structure is subjected to an earthquake, due to the rotation of the hinged joints between the concrete support column 3 and the beamless floor 2, there will be deformation cracks, and it should be repaired in time after the earthquake.

Referring to Fig. 3, Fig. 3 is a schematic diagram of a steel hinge according to an embodiment of the present invention. The support column 3 in this embodiment is a steel structure column, and the hinge point 4 between the support column 3 and the beamless floor 2 is a steel hinge, and the steel hinge includes an outer joint 9, a spherical joint 10 and a connecting part 11 , the outer joint 9 is arranged in the beamless floor 2, the spherical joint 10 is installed in the outer joint 9, and the spherical joint 10 is provided with a connection part 11 for connecting with the support column 3 , the height of the connecting portion 11 is equal to half of the diameter of the support column 3 . During construction, the steel structure support column 3 can be processed first, the spherical joint 10 at the end of the steel structure column can be processed, and the outer joint 9 of the spherical joint 10 can be processed. The gap distance between the spherical joint 10 and the outer joint 9 should be guaranteed to be 1mm; In the two-stage fastening installation, the spherical joint 10 and the outer joint 9 should be pre-installed; the upper and lower ends of the support column 3 are respectively connected to the corresponding spherical joint 10 through the connection part 11. After the on-site positioning and installation, the concrete beamless floor 2 is poured . It can ensure that the connection point between the support column 3 and the beamless floor 2 is in the form of a hinged connection, and it can ensure that the support column 3 does not absorb horizontal force during an earthquake, and the rotation of the connection node of the support column 3 is guaranteed, and no bending moment is resisted.

The present invention can determine the main body of the building structure according to the requirements of the building function, the seismic intensity of the structure and the number of floors, and select the "freely distributed swinging column + concrete lateral shear wall" multi-layer large-space building structure system; through the simulation calculation of the structure calculation software As for the structural parameters of the main body of the building structure, as long as the calculation software has a finite element analysis module, the support column 3 is simulated by a rod element, and the wall 1 and beamless floor 2 are simulated by a shell element, that is, the structure is established. The three-dimensional solid model of the support column 3 is defined as a rod element, and the wall body 1 is defined as a shell element; the support column 3 is freely arranged according to the needs of the building space, and the slenderness ratio of the support column 3 is less than or equal to 150, so The thickness of the body of wall 1 can be 200-400 millimeters, and at least double-layer two-way reinforcing bars are arranged in the body of wall 1, and the body of wall 1 of the elevator room of the main body of the building structure is arranged as a cylindrical structure; The main body of the building structure satisfies that the limit value of the elastic story displacement angle of the overall structure is less than 1/800, the axial compression ratio of the support column 3 is 0.5-1.0, and is controlled below 1.0, preferably 0.8, and the seismic section of the wall 1 The checking calculation satisfies SR/γRE, and the concrete tensile stress of the beamless floor 2 should be guaranteed to be less than or equal to zero. The reinforcement ratio of the beamless floor 2 is increased by 0.05 according to the calculation results and the requirements of the building seismic design code. The analysis and calculation results of other components shall be guaranteed to be within the requirements of the current national codes.

The present invention adopts the multi-layer large-space building structure system of "freely distributed swinging support columns 3+concrete lateral force balance wall 1", which originates from the space limitation of multi-layer large-space building structure selection. The supporting columns 3 in this building system are arranged in a free and random state. Since their slender column sections cannot bear sufficient lateral stiffness, they are designed as swinging columns that only bear vertical forces in the system. Since the support column 3 does not bear any horizontal force, its slenderness ratio can be far higher than that of columns in common structures. On the one hand, the randomly arranged support columns 3 can form an adaptive layout scheme according to different needs, on the other hand, the permeability of the large space is guaranteed, shaping an innovative architectural space intention.

The space formed by the concrete wall body 1 with lateral force balance can provide vertical components for vertical traffic and pipe wells in the building system. As an integral part of the composite structure, the concrete wall 1 becomes the main anti-lateral force system. Concealed steel columns and hidden steel beams can be set inside the concrete wall 1 and designed according to the non-yielding performance target of moderate earthquakes to ensure the seismic ductility performance of the lateral force-resistant system under moderate and large earthquakes, providing sufficient lateral resistance for the overall structure and Ensure that the support column 3 becomes a gravity column without lateral displacement. In order to ensure the effective lateral support of the concrete wall 1 to all the support columns 3, the beamless floor 2 is designed as an integral rigid force transmission system, and the horizontal force transmission path of the floor is systematically designed to ensure the integrity of the structure under moderate and large earthquakes. reliability and reliability.

The arrangement of the supporting column 3 in the present invention as a distributed swinging column is determined according to the size of the vertical (dead load + live load) load and the space used in the building. The axial compression ratio can be 0.5-1.0, and the optimal value is 0.8. The slenderness ratio is controlled below 150, and it does not bear the horizontal load (earthquake load + wind load) of the overall structure. The concrete lateral shear wall 1 should be arranged as a cylinder structure. Bear the horizontal load (earthquake load + wind load) of all structures. According to the height of the building, the thickness of the wall 1 can be 200-700 mm. The reinforcement configuration of the wall 1 should comply with the requirements of the current relevant national regulations. At least double-layer two-way reinforcement, and the top and bottom structures do not need to be processed. It is a conventional shear wall. Structural architecture. The structure of the beamless floor 2 is a normal floor, which can be equipped with double-layer two-way steel bars to transmit horizontal loads and control the tensile stress of the floor concrete to be less than zero.

The structure of the free-distributed swing support column 3+concrete lateral force balance wall 1 of the present invention is suitable for multi-storey large space buildings with low absolute span requirements, and a relatively free column layout can be realized according to the space requirements. The ultra-high slenderness ratio reduces the visual impact on spatial permeability. All the columns in the building are swing supporting columns 3 whose upper and lower ends are hinged, and there are no beams between the swinging columns and the floor slab, so as to ensure a flat architectural appearance and reduce the net height of the building. At the same time, it can make full use of the core tube shear wall structure in the elevator room of the building, that is, the part of the wall body 1 is arranged in the elevator room of the building as much as possible, and the other places are reserved for building functions, which can effectively improve the utilization efficiency of the building; the lateral wall of the elevator room of the building is set When it is a cylindrical structure, it can also increase the lateral stiffness.

In the present invention, the vertical force is borne by the free slender columns, and the concrete wall bears the horizontal force. On the one hand, the large-scale structural height of the long-span building is avoided; Unique spatial pattern, its super-large slenderness ratio also makes the space more transparent, effectively solving the problems of high structural height and low space use efficiency in multi-storey large-space and long-span buildings; in addition, the present invention overcomes the problem of multi-layer large space In the frame building, the column section is limited under the requirement of lateral force resistance, and the space permeability is insufficient; and the column network is regularly arranged in the multi-storey large space frame building, and the space mode is limited. The concrete wall solves the horizontal force problem of the building while providing the vertical building space. The free thin column solves the gravity problem and brings the possibility of a flexible layout of the building. The combination of the two different systems has both structural rationality and It provides a system guarantee for the innovation of the architectural model, and has important practical value for the spatial innovation of the building.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (10)

1. A multi-storey large-space building structure is applicable to a low-level multi-storey large-space building for absolute span requirements, and is characterized in that it comprises a composite building structure main body, and said building structure main body comprises: The wall, the wall is a concrete lateral force balance wall, which is used to provide a vertical building space and bear the horizontal force of the main body of the building structure; a multi-story beamless floor between and connected to the walls; and A plurality of support columns, each of which is a free-distributed swing column, is used to bear the vertical force in the vertical direction, and the two ends of each of the support columns are respectively hinged to the beamless floor. 2. The multi-storey large-space building structure according to claim 1, wherein the supporting columns are freely arranged according to the needs of the building space, and the slenderness ratio of the supporting columns can reduce the impact on the building space. The visual impact of transparency. 3. The multi-storey large-space building structure according to claim 1 or 2, wherein the beamless floor slabs on each floor are arranged vertically to the wall, and the beamless floor slabs on each floor are connected to the support Punching-resistant steel plates are provided at the hinge points of the columns. 4. The multi-storey large-space building structure as claimed in claim 3, characterized in that, double-layer two-way steel bars are arranged in the said beamless floor of each floor for transmitting horizontal loads, and the concrete of the beamless floor of each floor is The tensile stress is less than or equal to zero. 5. The multi-storey large-space building structure according to claim 1, 2 or 4, characterized in that the axial compression ratio of the supporting columns is 0.5-1.0, and the slenderness ratio of the supporting columns is less than or equal to 150. 6. The multi-storey large space building structure according to claim 5, characterized in that the axial compression ratio of the support column is 0.8. 7. The multi-storey large-space building structure according to claim 1, 2, 4 or 6, wherein the wall has a thickness of 200-700 mm, and at least double-layer two-way reinforcing bars are arranged in the wall reinforcement. 8. The multi-storey large-space building structure according to claim 1, 2, 4 or 6, wherein the support column is a concrete structural column, and the hinge point between the support column and the beamless floor is concrete Hinged joint, the concrete hinged joint includes a plurality of longitudinally stressed steel bars and column stirrups, a plurality of said longitudinally stressed steel bars are intersected with the hinge point as the center, and one end of said longitudinally stressed steel bar is connected to the reinforcement of said support column connection, the other end of the longitudinal stress reinforcement is connected to the punching-resistant steel plate of the beamless floor, and the column stirrup is arranged in parallel between the longitudinal stress reinforcement below the hinge point, and the hinge The distance from the point to the support column is half the diameter of the support column. 9. The multi-storey large-space building structure according to claim 1, 2, 4 or 6, wherein the supporting column is a steel structure column, and the hinge point between the supporting column and the beamless floor is steel hinge, the steel hinge includes an outer joint, a spherical joint and a connecting part, the outer joint is arranged in the beamless floor, the spherical joint is installed in the outer joint, and the spherical joint is provided with The connection part where the support columns are connected, the height of the connection part is equal to half the diameter of the support columns. 10. The multi-storey large-space building structure according to claim 1, 2, 4 or 6, characterized in that, the wall body of the elevator car of the main body of the building structure is a cylindrical structure.