Structural system adopting energy dissipation and shock absorption technology to cooperate with existing building and outer sleeve frame storey adding

Abstract

The invention aims to provide a structural system adopting an energy dissipation and shock absorption technology to cooperate with storey adding of the existing building and the outer sleeve frame. The energy dissipation device comprises a storey-adding frame arranged on the outer side of the existing building, a plurality of first energy dissipation assemblies fixedly connected with the storey-adding frame and a plurality of second energy dissipation assemblies fixedly connected with the storey-adding frame, each first energy dissipation assembly is connected with the existing building in the X-axis direction, and each second energy dissipation assembly is connected with the existing building in the X-axis direction. Each second energy dissipation assembly is connected with the existing building in the Y-axis direction, the existing building is provided with a plurality of limiting devices, and each limiting device is correspondingly matched with the corresponding first energy dissipation assembly or the corresponding second energy dissipation assembly in a limiting mode. The method is applied to the technical field of existing building storey-adding structures.

Description

Technical Field

[0001] The present invention relates to the technical field of the structure for adding storeys to existing buildings, and particularly relates to a structural system that uses energy dissipation and seismic reduction technology to cooperate with the existing building and the jacket frame for adding storeys. Background Art

[0002] China has a large population and extremely tense land resources. Therefore, land conservation is an urgent problem to be solved. Generally speaking, the addition and renovation of houses can be divided into the addition and renovation of civil and industrial houses. Among them, civil buildings such as residential buildings, office buildings, hospitals, hotels, stores, etc. are buildings with a large quantity and wide distribution. There are a large number of low-rise or multi-storey civil buildings in cities and towns. They cannot stop being used and urgently need to expand the usable area. Adding storeys in combination with the improvement of the house use function or major repair is an important way to transform and utilize low-rise or multi-storey houses into multi-storey and mid-rise houses.

[0003] When the bearing capacity of the existing building structure does not allow for direct storey addition, the method of adding a jacket frame is mostly adopted. The relationship between the jacket frame for adding storeys and the existing structure is mainly divided into two categories:

[0004] 1) The existing structure and the jacket frame for adding storeys form a whole and are completely stress-coordinated. When the outer frame is connected to the existing building, horizontal supports are set in the middle of each storey column of the newly added frame columns to form a short-leg column structure. This design enables the new and old structures to jointly bear the load. The outer frame works in coordination with the original structure through node connections, and the overall stiffness distribution is more uniform. Obviously, the newly added load is transmitted to the existing structure through the connection nodes, and it is necessary to check whether the bearing capacity of the original components meets the requirements. A large number of designs show that when they are connected together, there are often many components in the existing structure that need to be strengthened, and the strengthening will directly affect the use of the existing structure, which is greatly restricted in the practical engineering promotion and application;

[0005] 2) The existing structure and the jacket frame for adding storeys are disconnected and each bears its own load independently. When the outer frame is completely disconnected from the existing building, the height of the newly added frame bottom column is relatively large and there is no horizontal support in the middle, forming a long-leg column structure. At this time, the outer frame independently bears the newly added load and has no direct force transmission relationship with the existing structure, which is applicable to the situation where the bearing capacity of the original building is relatively low or the added storey height is relatively large.

[0006] However, the seismic requirements of this long-leg column structure itself are relatively high, the component size requirements are relatively large, and the construction difficulty is also increased. In view of the fact that these two structures are restricted by different conditions in practical applications, it is necessary to propose a new system that can, while satisfying the continued use of the existing building, cooperate with the stress of the jacket frame for adding storeys to a certain extent, improve the seismic stiffness of the jacket frame, and further enhance the seismic toughness of the existing structure and the jacket frame for adding storeys. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a structural system that uses energy dissipation and shock absorption technology to cooperate with the existing building and the jacket frame for adding floors.

[0008] The technical solution adopted by the present invention is as follows: The present invention includes an additional floor frame arranged outside the existing building, several first energy dissipation components fixedly connected to the additional floor frame, and several second energy dissipation components fixedly connected to the additional floor frame. Each of the first energy dissipation components is connected to the existing building along the X-axis direction, and each of the second energy dissipation components is connected to the existing building along the Y-axis direction. The existing building is provided with several limiting devices, and each of the limiting devices is in limiting cooperation with the corresponding first energy dissipation component or the second energy dissipation component.

[0009] Furthermore, the additional floor frame includes several frame columns arranged outside the existing building, several frame beams fixedly connected to the corresponding frame columns, straight columns correspondingly arranged in the middle of the corresponding frame beams, and connecting beams arranged between two adjacent straight columns. Each of the first energy dissipation components is fixedly connected to the corresponding connecting beam, and each of the second energy dissipation components is fixedly connected to the corresponding frame beam.

[0010] Furthermore, the first energy dissipation component includes two first diagonal braces, a mounting block, a first damping member, and a first pier. Each of the first diagonal braces is provided with a connecting plate, and each of the connecting plates is fixedly connected to the connecting beam. The mounting block is arranged at one end of the two first diagonal braces. The first pier is connected to the column body of the existing building. The first damping member is arranged between the mounting block and the first pier. A limiting groove for limiting cooperation with the limiting device is formed at the bottom of the mounting block.

[0011] Furthermore, the first damping member is one of a metal hysteretic damper, a viscous fluid damper, a viscoelastic damper, or other types of dampers.

[0012] Furthermore, the second energy dissipation component includes two second diagonal braces, a connecting block, a second damping member, and a second pier. One end of a group of the second diagonal braces is provided with a first mounting plate, and the first mounting plate is fixedly connected to the frame beam and the frame column. The other end of the other group of the second diagonal braces is provided with a second mounting plate fixedly connected to the frame beam and the straight column. The other ends of the two groups of the second diagonal braces are both fixedly connected to the connecting block. The second pier is fixedly connected to the column body of the existing building. The second damping member is arranged between the connecting block and the second pier. A limiting card slot for limiting cooperation with the limiting device is formed at the bottom of the connecting block.

[0013] Further, the second damping member is one of a metal hysteretic damper, a viscous liquid damper, a viscoelastic damper or other types of dampers.

[0014] Further, a plurality of the first energy dissipation components are symmetrically arranged at both ends of the added-story frame along the Y-axis direction, and a plurality of the second energy dissipation components are symmetrically arranged at both ends of the added-story frame along the X-axis direction.

[0015] Further, the frame columns are reinforced concrete frame columns.

[0016] Further, the added-story frame is formed with a plurality of partition walls, and each of the first energy dissipation components and the second energy dissipation components is embedded in the corresponding partition wall.

[0017] The beneficial effects of the present invention are as follows: Since the present invention realizes the limited coordination between the added-story outer frame and the existing structure through the dynamic adjustment of multiple first energy dissipation components and second energy dissipation components, the overall strength and stability are improved; the added-story frame is arranged on the outside of the existing building and is not directly connected to the existing building, reducing the impact on the operation of facilities inside the building during the construction process. Only local openings need to be made inside the existing building to connect with the first energy dissipation components and the second energy dissipation components to complete the docking installation, and the use function of the existing structure is not interrupted during the construction process and can continue to be used; at the same time, the added-story frame forms multiple force transmission paths through frame beams and frame columns, and the energy dissipation and shock absorption technology is set as the first line of defense for energy consumption, improving the overall seismic performance of the existing structure and the outer frame. The added-story frame independently bears the new load, avoiding the over-limit of the axial compression ratio of the columns in the existing building; by using a plurality of first damping blocks arranged along the X-axis direction and a plurality of second damping blocks arranged along the Y-axis direction, and connecting the existing building through damping members, while effectively reducing the transmission of displacement kinetic energy, the strength of the existing building can be limitedly utilized to maintain the stability of the added-story frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is Figure 1 a partial enlarged view of part A in

[0020] Figure 3 is a schematic structural diagram of the added-story frame of the present invention;

[0021] Figure 4 is a schematic structural diagram of the connection between the first energy dissipation component of the present invention and the existing structure;

[0022] Figure 5 is a schematic structural diagram of the connection between the second energy dissipation component of the present invention and the existing structure;

[0023] Figure 6 is a schematic structural diagram of the first energy dissipation component of the present invention;

[0024] Figure 7 It is a schematic structural view of the second energy dissipation component of the present invention.

[0025] In the figure: 1. Storey-adding frame; 11. Frame column; 12. Frame beam; 12. Frame beam; 13. Straight column; 14. Connecting column; 2. First energy dissipation component; 21. First diagonal brace; 22. Mounting block; 23. First damping member; 24. First pier; 25. Connecting plate; 26. Limiting groove; 3. Second energy dissipation component; 31. Second diagonal brace; 32. Connecting block; 33. Second damping member; 34. Second pier; 35. First mounting plate; 36. Second mounting plate; 37. Limiting card slot; 4. Limiting device; 5. Existing building. Specific embodiments

[0026] As Figures 1 to 7 shown, in this embodiment, the present invention includes a storey-adding frame 1 arranged outside the existing building 5, a plurality of first energy dissipation components 2 fixedly connected to the storey-adding frame 1, and a plurality of second energy dissipation components 3 fixedly connected to the storey-adding frame 1. Each first energy dissipation component 2 is connected to the existing building 5 along the X-axis direction, and each second energy dissipation component 3 is connected to the existing building 5 along the Y-axis direction. The existing building 5 is provided with a plurality of limiting devices 4, and each limiting device 4 is in limiting cooperation with the corresponding first energy dissipation component 2 or the second energy dissipation component 3;

[0027] The storey-adding frame 1 is a reinforced concrete structure as a whole, arranged outside the existing building 5. The storey-adding frame 1 is not directly connected to the existing building 5. The storey-adding frame 1 independently bears the new load, avoiding the over-limit of the column axial compression ratio of the existing building 5. During the construction outside the existing building 5, the influence on the operation of the facilities inside the building is reduced. Only local openings need to be made inside the existing building 5 to connect with the first energy dissipation component 2 and the second energy dissipation component 3 to complete the connection and installation; The storey-adding frame 1 and the existing building 5 are supported by a viscous damper for energy dissipation, reducing the seismic force by 25-30%. The original structure does not need large-scale reinforcement, saving 15% of the cost. The reinforced concrete frame column structure and the energy dissipation damper provide a double defense line, meeting the requirement of non-collapse of Class B buildings under rare earthquakes.

[0028] In this embodiment, the additional story frame 1 includes a number of frame columns 11 arranged outside the existing building 5, a number of frame beams 12 fixedly connected to the corresponding frame columns 11, straight columns 13 correspondingly arranged in the middle of the corresponding frame beams 12, and connecting beams 14 arranged between two adjacent straight columns 13. Each first energy dissipation component 2 is fixedly connected to the corresponding connecting beam 14, and each second energy dissipation component 3 is fixedly connected to the corresponding frame beam 12. The reinforced concrete frame structure is adopted to independently bear the additional load, avoiding the over-limit of the axial compression ratio of the columns of the existing building 5. The frame beam 12 and the straight column 13 structure form multiple load transfer paths, and form secondary protection energy dissipation and shock absorption with the dampers in the first energy dissipation component 2 and the second energy dissipation component 3.

[0029] In this embodiment, the first energy dissipation component 2 includes two first diagonal braces 21, a mounting block 22, a first damping member 23 and a first pier 24. Each first diagonal brace 21 is provided with a connecting plate 25, and each connecting plate 25 is fixedly connected to the connecting beam 14. The mounting block 22 is arranged at one end of the two first diagonal braces 21. The first pier 24 is connected to the column body of the existing building 5. The first damping member 23 is arranged between the mounting block 22 and the first pier 24. A limiting groove 26 for limiting cooperation with the limiting device 4 is formed at the bottom of the mounting block 22. The periphery of the first damping member 23 is filled with flexible fireproof materials, and the first energy dissipation component 2 is integrally embedded in the partition wall, reducing the use space of the existing structure occupied after the connection structure is completed, improving the space utilization rate. The first pier 24 is provided with a connecting piece fixedly connected to the first damping member 23. The connecting piece is made of Q355B steel, and the bolt grade is 8.8.

[0030] In this embodiment, the first damping member 23 is one of a metal hysteretic damper, a viscous fluid damper, a viscoelastic damper or other types of dampers.

[0031] In this embodiment, the second energy dissipation component 3 includes two second diagonal braces 31, a connecting block 32, a second damper 33, and a second pier 34. One end of a set of the second diagonal braces 31 is provided with a first mounting plate 35, and the first mounting plate 35 is fixedly connected to the frame beam 12 and the frame column 11. One end of another set of the second diagonal braces 31 is provided with a second mounting plate 36 fixedly connected to the frame beam 12 and the straight column 13. The other ends of the two sets of the second diagonal braces 31 are both fixedly connected to the connecting block 32. The second pier 34 is fixedly connected to the column body of the existing building 5. The second damper 33 is arranged between the connecting block 32 and the second pier 34. A limit card slot 37 for limit cooperation with the limit device 4 is formed at the bottom of the connecting block. The periphery of the second damper 33 is filled with a flexible fireproof material, and the second energy dissipation component 3 as a whole is embedded in the partition wall, reducing the occupied space of the existing structure after the connection structure is completed and improving the space utilization rate. The second pier 34 is provided with a connecting piece fixedly connected to the second damper 33, and the connecting piece is made of Q355B steel with a bolt grade of 8.8.

[0032] In this embodiment, the second damper 33 is one of a metal hysteretic damper, a viscous fluid damper, a viscoelastic damper, or other types of dampers.

[0033] In this embodiment, a plurality of the first energy dissipation components 2 are symmetrically arranged at both ends of the increased-story frame 1 along the Y-axis direction, and a plurality of the second energy dissipation components 3 are symmetrically arranged at both ends of the increased-story frame 1 along the X-axis direction.

[0034] In this embodiment, the frame column 11 is a reinforced concrete frame column.

[0035] In this embodiment, the increased-story frame 1 forms a plurality of partition walls, and each of the first energy dissipation components 2 and the second energy dissipation components 3 is embedded in the corresponding partition wall. The partition wall is made of lightweight gypsum board with a thickness of 50 mm and a fire resistance limit of ≥1.5 h.

[0036] The working principle of the present invention:

[0037] During the construction process, the increased-story frame 1 is constructed outside the existing building 5, and only local holes need to be opened inside the existing building 5. The first pier 24 and the second pier 34 are installed on the column body of the existing building 5, and the first pier 24 and the second pier 34 are fixedly connected to the corresponding first damper 23 and second damper 33.

[0038] During daily use, the reinforced concrete frame column structure and the energy dissipation damper provide a double defense line to meet the requirement of non-collapse of class B buildings under rare earthquakes.

[0039] Although the embodiments of the present invention are described with actual solutions, they do not constitute a limitation to the meaning of the present invention. For those skilled in the art, modifications to its implementation solutions according to this specification and combinations with other solutions are obvious.

Claims

1. A structural system that uses energy dissipation and shock absorption technology to coordinate the existing building and the outer frame to increase the storey, which acts on the existing building (5), characterized by: The invention comprises a storey-adding frame (1) arranged outside the existing building (5), a plurality of first energy dissipation components (2) fixedly connected to the storey-adding frame (1), and a plurality of second energy dissipation components (3) fixedly connected to the storey-adding frame (1), each of the first energy dissipation components (2) being connected to the existing building (5) along the X-axis direction, each of the second energy dissipation components (3) being connected to the existing building (5) along the Y-axis direction, and the existing building (5) being provided with a plurality of limiting devices (4), each of the limiting devices (4) correspondingly cooperating with the first energy dissipation component (2) or the second energy dissipation component (3) for limiting.

2. According to claim 1, a structural system using energy dissipation and shock absorption technology to coordinate the existing building and the outer frame to increase the storey, characterized in that: The storey-adding frame (1) comprises a plurality of frame columns (11) arranged outside the existing building (5), a plurality of frame beams (12) fixedly connected to the corresponding frame columns (11), a plurality of straight columns (13) arranged in the middle of the corresponding frame beams (12), and a connecting beam (14) arranged between two adjacent straight columns (13), each of the first energy dissipation components (2) being fixedly connected to the corresponding connecting beam (14), and each of the second energy dissipation components (3) being fixedly connected to the corresponding frame beam (12).

3. According to claim 2, a structural system using energy dissipation and vibration reduction technology to coordinate the existing building and the outer frame to increase the storey, characterized in that: The first energy dissipation component (2) comprises two first diagonal braces (21), a mounting block (22), a first damping member (23) and a first column pier (24); each of the first diagonal braces (21) is provided with a connecting plate (25); each of the connecting plates (25) is fixedly connected to the connecting beam (14); the mounting block (22) is arranged at one end of the two first diagonal braces (21); the first column pier (24) is connected to a column of the existing building (5); the first damping member (23) is arranged between the mounting block (22) and the first column pier (24); and a limiting groove (26) is formed at the bottom of the mounting block (22) and is matched with the limiting device (4) for limiting.

4. According to claim 3, a structural system using energy dissipation and vibration reduction technology to coordinate the existing building and the outer frame to increase the storey, characterized in that: The first damping element (23) is a metal hysteresis damper, a viscous liquid damper, a viscoelastic damper or other types of dampers.

5. According to claim 2, a structural system using energy dissipation and vibration reduction technology to coordinate the existing building and the outer frame to increase the storey, characterized in that: The second energy dissipation assembly (3) comprises two second oblique braces (31), a connecting block (32), a second damping member (33) and a second column pier (34); one end of one group of the second oblique braces (31) is provided with a first mounting plate (35), the first mounting plate (35) being fixedly connected to the frame beam (12) and the frame column (11); one end of another group of the second oblique braces (31) is provided with a second mounting plate (36) being fixedly connected to the frame beam (12) and the straight column (13); the other ends of the two groups of the second oblique braces (31) are both fixedly connected to the connecting block (32); the second column pier (34) is fixedly connected to the column of the existing building (5); the second damping member (33) is arranged between the connecting block (32) and the second column pier (34); and a limiting slot (37) which cooperates with the limiting device (4) is formed at the bottom of the connecting block (32).

6. According to claim 5, a structural system using energy dissipation and vibration reduction technology to coordinate the existing building and the outer frame to increase the storey, characterized in that: The second damping element (33) is a metal hysteresis damper, a viscous liquid damper, a viscoelastic damper or other types of dampers.

7. According to claim 2, a structural system using energy dissipation and vibration reduction technology to coordinate the existing building and the outer frame to increase the storey, characterized in that: The frame column (11) is a reinforced concrete frame column.

8. According to claim 1, a structural system using energy dissipation and vibration reduction technology to coordinate the existing building and the outer frame to increase the storey, characterized in that: The added-storey frame (1) is formed with a plurality of partition walls, and each of the first energy dissipation component (2) and the second energy dissipation component (3) is embedded in the corresponding partition wall.

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