CN215406542U - Assembled SMA steel frame beam column shock attenuation node - Google Patents
Assembled SMA steel frame beam column shock attenuation node Download PDFInfo
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- CN215406542U CN215406542U CN202120523724.XU CN202120523724U CN215406542U CN 215406542 U CN215406542 U CN 215406542U CN 202120523724 U CN202120523724 U CN 202120523724U CN 215406542 U CN215406542 U CN 215406542U
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Abstract
The utility model relates to an assembly type SMA steel frame beam column damping node, which comprises a column member, a beam column connecting plate, a beam connecting plate and at least one shape memory alloy screw rod, wherein the beam member is fixedly connected with the beam column connecting plate; the end face of the beam component is perpendicularly connected to the column flange plate on one side of the column component, the beam-column connecting plate is connected to the column flange plate on one side of the column component and the beam flange plate on one side of the beam component through bolts, the column connecting plate is connected to the column flange plate on one side of the column component through bolts, the beam connecting plate is connected to the beam flange plate on the other side of the beam component through bolts, one end of the shape memory alloy screw penetrates through the column connecting plate to be connected with the column component, and the other end of the shape memory alloy screw is connected with the beam connecting plate. According to the utility model, the shape memory alloy screw rods are arranged at the beam-column nodes, so that the shock absorption performance of the beam-column nodes of the fabricated steel structure building can be improved, and the integral stability of the structure is improved; the self-resetting characteristic of the shape memory alloy screw is utilized, so that the structure can be reset after being deformed.
Description
Technical Field
The utility model relates to the technical field of building structure shock absorption, in particular to an assembly type SMA steel frame beam column shock absorption node.
Background
At present, the national construction management department is popularizing the building industrialization, namely, the assembly type building in most regions of the country, and the green building is realized while the construction efficiency is improved so as to meet the increasing social needs.
The beam column node of steel construction assembly type structure adopts bolted connection or welding mostly, although bolted connection's bearing capacity is higher, but under the earthquake action, the bolt on the node is bearing the huge effort that transmits to structurally, the node that adopts bolted connection is relatively weak in the aspect of plastic deformation ability, under great earthquake action, bolted connection can be because of its effort that bears exceeds its bearing capacity and destroys, and then endanger overall structure's safety, be difficult to restore after the structural damage, can cause great economic loss, and the seismic energy that its limited little deformation consumed before the bolted connection destroys is fairly few.
The assembly type building is adopted in the area with higher earthquake-resistant requirement, if no shock absorption measure is adopted, in order to meet the requirements of design specification and use safety, the size of the components adopted by the assembly type building is quite large, so that the assembly type building is not attractive, and the cost of the building is greatly increased. In addition, adopt the attenuator to carry out the shock attenuation at the beam column node of prefabricated assembled steel construction, though can dissipate the energy that transmits to structurally under the earthquake effect effectively, the later stage of attenuator is overhauld and is needed certain maintenance cost and maintain technical requirement higher, and the comprehensive cost of adopting the attenuator shock attenuation like this is higher, if do not carry out regular maintenance and overhaul, then the attenuator may lose efficacy to can't reach the absorbing purpose under the earthquake effect.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems in the prior art, the utility model aims to: the beam column damping node of the assembled SMA steel frame can reduce the dynamic response of an assembled steel structure building under the action of an earthquake and improve the overall stability of the structure by arranging the shape memory alloy screw rods at the beam column node.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an assembled SMA steel frame beam column damping node comprises a column member, a beam column connecting plate, a beam connecting plate and at least one shape memory alloy screw; the column member includes the column web and connects the column flange board in column web both sides, the beam member includes the beam web and connects the beam flange board in beam web both sides, the terminal surface of beam member is connected perpendicularly on the column flange board of column member one side, beam column connecting plate passes through bolted connection on the column flange board of column member one side and the beam flange board of beam member one side, the column connecting plate passes through bolted connection on the column flange board of column member one side, the beam connecting plate passes through bolted connection on the beam flange board of beam member opposite side, the column connecting plate is passed with column member connection to the one end of shape memory alloy screw rod, the other end and the beam connecting plate of shape memory alloy screw rod are connected.
Furthermore, one end of the shape memory alloy screw is fixed with the column connecting plate and the column component through nuts, the beam connecting plate is provided with a screw connecting piece, and the other end of the shape memory alloy screw is fixed with the screw connecting piece through nuts.
Furthermore, friction gaskets are arranged at the fixing positions of the shape memory alloy screw rod and the column connecting plate, and the fixing positions of the column member and the screw rod connecting piece.
Furthermore, the included angle between the shape memory alloy screw and the column connecting plate is 70 degrees.
Furthermore, a plurality of column web stiffening ribs are further arranged on the column component and connected with the column web and the column flange plates on the two sides.
Furthermore, four column web stiffening ribs are arranged on the front surface of the column member, and are respectively arranged at equal heights of the lower edge of the column connecting plate, at equal heights of the beam flange plates on one side of the beam member, at equal heights of the beam flange plates on the other side of the beam member and at equal heights of the upper edge of the beam-column connecting plate.
Furthermore, the back of the column member is provided with four column web stiffening ribs, and the four column web stiffening ribs on the back of the column member and the four column web stiffening ribs on the front of the column member are symmetrically arranged.
Further, the column web stiffeners are attached to the column members by welding.
Further, the bolts for connecting the beam-column connecting plate with the column member and the beam member, the bolts for connecting the column connecting plate with the column member, and the bolts for connecting the beam connecting plate with the beam member are all high-strength bolts.
In summary, the present invention has the following advantages:
the shape memory alloy screw rods are arranged at the beam-column nodes, so that the shock absorption performance of the beam-column nodes of the fabricated steel structure building can be improved, the dynamic response of the fabricated steel structure building under the action of an earthquake is reduced, and the integral stability of the structure is improved; meanwhile, the self-resetting characteristic of the shape memory alloy screw is utilized, so that the structure can be reset after deformation, and the residual deformation effect is reduced.
And secondly, when a common earthquake occurs, the steel frame beam column joint does not generate plastic deformation and has certain stability. When rare earthquake happens, the steel frame beam column node generates certain small rotation deformation, and the shape memory effect through the shape memory alloy screw rod can generate restoring force to reset the structure, thereby effectively preventing the overlarge rotation of the node and the vibration generated in the assembly type structure.
The viscous damper is convenient to install and debug, convenient and simple to maintain in daily life, low in maintenance cost and free from failure caused by improper maintenance in daily life, and the problem that the traditional viscous damper fails caused by improper maintenance can be solved; by adopting the utility model, the size of the structural member can be reduced, and certain construction cost can be reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a front view of the present invention.
The composite beam comprises a beam component 1, a beam web 2, a column flange plate 1-2, a beam component 2-1, a beam web 2-2, a beam flange plate 3, a beam column connecting plate 4, a column connecting plate 5, a shape memory alloy screw 6, a column web stiffening rib 7, a screw connecting piece 8 and a friction gasket 9, wherein the beam web is a column member, the column web is a column web, the beam flange plate 1-2 is a column flange plate, the beam column connecting plate 5 is a beam connecting plate, the shape memory alloy screw 7 is a column web stiffening rib, and the friction gasket 9 is a screw connecting piece.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in fig. 1 and 2, an assembled SMA steel frame beam-column damping node comprises a column member, a beam-column connecting plate, a beam connecting plate and at least one shape memory alloy screw; the column member includes the column web and connects the column flange board in column web both sides, the beam member includes the beam web and connects the beam flange board in beam web both sides, the terminal surface of beam member is connected perpendicularly on the column flange board of column member one side, beam column connecting plate passes through bolted connection on the column flange board of column member one side and the beam flange board of beam member one side, the column connecting plate passes through bolted connection on the column flange board of column member one side, the beam connecting plate passes through bolted connection on the beam flange board of beam member opposite side, the column connecting plate is passed with column member connection to the one end of shape memory alloy screw rod, the other end and the beam connecting plate of shape memory alloy screw rod are connected.
As shown in fig. 1 and 2, one end of the shape memory alloy screw is fixed to the column connecting plate and the column member by a nut, the beam connecting plate is provided with a screw connecting member, and the other end of the shape memory alloy screw is fixed to the screw connecting member by a nut. The shape memory alloy screw (SMA screw) is a screw made of shape memory alloy and has the characteristic of self-resetting. When the column connecting plate and the beam connecting plate are in relative displacement, the shape memory alloy screw rod can be pulled or pressed in a reciprocating manner, and the structure can be reset by utilizing the shape memory effect of the shape memory alloy screw rod, so that the shock absorption effect is realized. In order to ensure the damping effect, the number of the shape memory alloy screw rods is two or more, and the larger the diameter of the shape memory alloy screw rods is, the more energy can be dissipated. In the present embodiment, the number of the shape memory alloy screws is two, and the two shape memory alloy screws are symmetrically arranged.
As shown in fig. 1 and 2, friction pads are arranged at the fixing positions of the shape memory alloy screw rod and the column connecting plate, the column member and the screw rod connecting piece. The friction gasket is arranged, so that the maximum friction sliding value of the fixing position can be increased, and the shape memory alloy screw rod is prevented from friction sliding under the action of an earthquake, so that connection failure is caused. The included angle between the shape memory alloy screw and the column connecting plate is 70 degrees.
In the embodiment, the column connecting plate and the beam connecting plate are produced by rolling, so that the integrity is high. When the shape memory alloy screw is deformed, the whole stability can be kept, and the shock absorption capacity of the shape memory alloy screw can be fully exerted.
As shown in fig. 1 and 2, a plurality of column web stiffeners are also provided on the column member, and the column web stiffeners are connected to the column web and the column flange plates on both sides. In this embodiment, four column web stiffeners are provided on the front face of the column member, and the four column web stiffeners are provided at equal heights on the lower edge of the column connecting plate, at equal heights on the flange plate on one side of the beam member, at equal heights on the flange plate on the other side of the beam member, and at equal heights on the upper edge of the beam-column connecting plate, respectively. The back of the column member is also provided with four column web stiffening ribs, and the four column web stiffening ribs on the back of the column member and the four column web stiffening ribs on the front of the column member are symmetrically arranged.
The column web stiffeners are connected to the column members by welding. The column web stiffening rib is connected with the column member through welding, the overall rigidity and stability of the column member can be enhanced, and the column member can still keep stable and have certain bearing capacity in the deformation process of the shape memory alloy screw rod under tension or compression.
The bolts for connecting the beam-column connecting plate with the column member and the beam member, the bolts for connecting the column connecting plate with the column member, and the bolts for connecting the beam connecting plate with the beam member are all high-strength bolts. The high-strength bolt can strengthen connection, maintain stability and have higher rigidity.
The working principle of the utility model is as follows:
the utility model is applied to the steel structure assembly type building, when earthquake happens, the beam-column node of the steel frame rotates, namely, the column member and the beam member generate corner displacement. Because one end of the shape memory alloy screw rod is connected with the column connecting plate and the column member, and the other end of the shape memory alloy screw rod is connected with the beam member through the beam connecting plate, when the column member and the beam member generate relative angular displacement, the shape memory alloy screw rod limits the relative rotation of the column member and the beam member, the shape memory alloy screw rod can be pulled or pressed in a reciprocating manner while limiting the rotation of the column member and the beam member, and based on the self-resetting characteristic of the shape memory alloy, the shape memory alloy screw rod can generate restoring force in the pulling or pressing process to reset the structure, so that the aim of shock absorption is fulfilled.
The energy consumption capacity of the shape memory alloy screw rod can be enlarged by reasonably setting the diameter of the shape memory alloy screw rod, the size of a nut adopted by the connecting screw rod, the thickness of a friction gasket and the like; by applying a certain pretightening force to the shape memory alloy screw rod, the damping effect of the large damper can be generated, and the manufacturing cost is saved.
In summary, the shape memory alloy screw rods are arranged at the beam-column nodes, so that the shock absorption performance of the beam-column nodes of the fabricated steel structure building can be improved, the dynamic response of the fabricated steel structure building under the action of an earthquake is reduced, and the integral stability of the structure is improved; meanwhile, the self-resetting characteristic of the shape memory alloy screw is utilized, so that the structure can be reset after deformation, and the residual deformation effect is reduced. When a common earthquake occurs, the steel frame beam column node does not generate plastic deformation and has certain stability. When rare earthquake happens, the steel frame beam column node generates certain small rotation deformation, and the shape memory effect through the shape memory alloy screw rod can generate restoring force to reset the structure, thereby effectively preventing the overlarge rotation of the node and the vibration generated in the assembly type structure. The viscous damper is convenient and fast to install and debug, convenient and simple to maintain in daily life, low in maintenance cost, free of failure caused by improper maintenance in daily life and capable of solving the problem that a traditional viscous damper fails caused by improper maintenance; by adopting the utility model, the size of the structural member can be reduced, and certain construction cost can be reduced.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (9)
1. The utility model provides an assembled SMA steel frame beam column shock attenuation node which characterized in that: the beam-column connection plate is connected with the column connection plate through the shape memory alloy screw; the column member includes the column web and connects the column flange board in column web both sides, the beam member includes the beam web and connects the beam flange board in beam web both sides, the terminal surface of beam member is connected perpendicularly on the column flange board of column member one side, beam column connecting plate passes through bolted connection on the column flange board of column member one side and the beam flange board of beam member one side, the column connecting plate passes through bolted connection on the column flange board of column member one side, the beam connecting plate passes through bolted connection on the beam flange board of beam member opposite side, the column connecting plate is passed with column member connection to the one end of shape memory alloy screw rod, the other end and the beam connecting plate of shape memory alloy screw rod are connected.
2. The assembled SMA steel frame beam-column damping node of claim 1, wherein: one end of the shape memory alloy screw is fixed with the column connecting plate and the column component through nuts, the beam connecting plate is provided with a screw connecting piece, and the other end of the shape memory alloy screw is fixed with the screw connecting piece through nuts.
3. The assembled SMA steel frame beam-column damping node of claim 2, wherein: friction gaskets are arranged at the fixing positions of the shape memory alloy screw rod and the column connecting plate, the column component and the screw rod connecting piece.
4. The assembled SMA steel frame beam-column damping node of claim 1, wherein: the included angle between the shape memory alloy screw and the column connecting plate is 70 degrees.
5. The assembled SMA steel frame beam-column damping node of claim 1, wherein: the column member is also provided with a plurality of column web stiffening ribs which are connected with the column web and the column flange plates at two sides.
6. The assembled SMA steel frame beam-column damping node of claim 5, wherein: the front of the column member is provided with four column web stiffening ribs which are respectively arranged at equal heights of the lower edge of the column connecting plate, at equal heights of the beam flange plates on one side of the beam member, at equal heights of the beam flange plates on the other side of the beam member and at equal heights of the upper edge of the beam-column connecting plate.
7. The assembled SMA steel frame beam-column damping node of claim 6, wherein: the back of the column member is provided with four column web stiffening ribs, and the four column web stiffening ribs on the back of the column member and the four column web stiffening ribs on the front of the column member are symmetrically arranged.
8. The assembled SMA steel frame beam-column damping node of claim 5, wherein: the column web stiffeners are connected to the column members by welding.
9. The assembled SMA steel frame beam-column damping node of claim 1, wherein: the bolts for connecting the beam-column connecting plate with the column member and the beam member, the bolts for connecting the column connecting plate with the column member, and the bolts for connecting the beam connecting plate with the beam member are all high-strength bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120523724.XU CN215406542U (en) | 2021-03-11 | 2021-03-11 | Assembled SMA steel frame beam column shock attenuation node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120523724.XU CN215406542U (en) | 2021-03-11 | 2021-03-11 | Assembled SMA steel frame beam column shock attenuation node |
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| Publication Number | Publication Date |
|---|---|
| CN215406542U true CN215406542U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120523724.XU Active CN215406542U (en) | 2021-03-11 | 2021-03-11 | Assembled SMA steel frame beam column shock attenuation node |
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| Country | Link |
|---|---|
| CN (1) | CN215406542U (en) |
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2021
- 2021-03-11 CN CN202120523724.XU patent/CN215406542U/en active Active
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