CN113216436A - Supporting connecting piece at joint of steel supporting beam column and self-resetting SMA device - Google Patents
Supporting connecting piece at joint of steel supporting beam column and self-resetting SMA device Download PDFInfo
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- CN113216436A CN113216436A CN202110526954.6A CN202110526954A CN113216436A CN 113216436 A CN113216436 A CN 113216436A CN 202110526954 A CN202110526954 A CN 202110526954A CN 113216436 A CN113216436 A CN 113216436A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/024—Structures with steel columns and beams
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B2001/2466—Details of the elongated load-supporting parts
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Abstract
The invention discloses a supporting connecting piece at a joint of a steel supporting beam column, which belongs to the technical field of steel structures with recoverable functions, wherein the supporting connecting piece is provided with column end strip holes and beam end strip holes which are arranged in pairs, the column end strip holes are connected to a steel column through column end strip holes in a bolt manner, the upper flange of a steel beam is provided with a steel beam strip hole, the steel beam strip hole is connected with the beam end strip holes through bolts, SMA wires are connected between bolts in each pair of beam end strip holes, and meanwhile, a steel support is hinged on the supporting connecting piece; the SMA wires provide the steel beam resetting capability, and the supporting connecting pieces provide the steel beam rotation energy consumption capability, so that the steel beam has enough ductility and rotation capability; the self-resetting SMA device at the node of the steel supporting beam column adopts the supporting connecting piece, the lower flange of the steel column is fixedly connected with the lower flange of the steel beam, the steel beam can rotate around the connecting point of the steel beam and the steel column, the purposes of strong energy consumption and strong resetting are realized through the self-resetting SMA device, and the structure residual deformation risk and the influence of the node opening and closing effect are reduced.
Description
Technical Field
The invention relates to the technical field of steel structures with recoverable functions, in particular to a supporting connecting piece at a steel supporting beam column joint and a self-resetting SMA device.
Background
Steel frame structures are common structural forms in multi-story and high-rise buildings, in which beam-column joints are the basic units of the steel frame structure. The beam column node in the steel frame structure needs to transmit axial force, shearing force and bending moment, the force transmission mechanism is very complex, and the beam column node serving as the force transmission node in the steel frame structure is very easy to deform when encountering earthquake and further influences the use safety and the service life of a building. Therefore, the seismic capacity of the beam-column node becomes crucial, at present, in order to improve the seismic capacity and the service life of a building, a recoverable functional structure is arranged at the beam-column node, when the recoverable functional structure is subjected to earthquake action, the residual deformation of a structural member caused by yielding energy consumption can be reduced by using a self-resetting mechanism, the recoverable functional capacity of the structure is effectively improved, the building can still be used after the earthquake, and the service life of the building is ensured. For example, in the patent of '201810346633.6', the name of 'self-resetting beam-column node and steel structure building based on SMA bar', a connecting plate is arranged between a steel column and a steel beam, one end of the connecting plate is fixedly connected with the steel column, the other end of the connecting plate is connected with a web plate bolt of the steel beam, a space for the steel beam to rotate around the bolt on the web plate is reserved between the steel beam and the steel column, one end of the SMA bar is connected with the steel column, the other end of the SMA bar is fixedly connected with the steel beam, and the SMA bar is arranged in a vertical symmetry mode relative to the bolt on the web plate of the steel beam. When an earthquake occurs, the steel beam can rotate around the bolt and dissipate earthquake energy, and then the steel beam can be restored to the original position for continuous use through the self-restoring capacity of the SMA bar after the earthquake occurs.
However, in the existing self-resetting steel frame structure or the invention patent, only the self-resetting connecting node of the steel beam and the steel column is usually researched, and the performance research on the self-resetting beam-column node with the rigid support is less, so that the existing recoverable function structure is not suitable for the beam-column node with the steel support. Especially in the eccentric supporting structure, the residual deformation of the structure after the earthquake is large, the self-resetting and energy consumption capacity of the structure needs to be further increased, and the residual deformation of the structure is reduced. Meanwhile, the connecting joint area of the steel beam, the steel column and the steel support in the eccentric support structure can form strong rigidity constraint, and the opening and closing effect is easily generated under the combined action of the axial force, the shearing force and the bending moment, so that the connecting part is damaged or destroyed before the beam, the column and the support yield, and therefore the connecting part needs to have enough ductility and rotation capacity to solve the influence of the opening and closing effect.
Disclosure of Invention
The invention aims to solve the technical problems and provides a supporting connecting piece at a steel supporting beam-column joint and a self-resetting SMA device, the aim of rotating energy consumption of a steel beam is fulfilled by low friction slippage energy consumption brought by the supporting connecting piece, and meanwhile, the steel beam is pulled by an SMA wire to provide strong energy consumption and strong resetting capability so as to solve the problems of large residual deformation, weak energy consumption capability, obvious opening and closing effect, poor resetting capability and the like of the steel column-steel beam-steel supporting connecting joint in the background technology.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a supporting connecting piece at a joint of a steel supporting beam column, which is used for connecting a steel column, a steel beam and a steel support, wherein the supporting connecting piece is provided with column end long strip holes arranged along the height direction of the steel column and beam end long strip holes arranged in pairs along the length direction of the steel beam, and the supporting connecting piece is connected to the steel column through the column end long strip holes in a bolt manner; the upper flange of the steel beam is provided with a steel beam long hole corresponding to the beam end long hole, and the steel beam long hole is connected with the beam end long hole through a bolt; an SMA wire which can always pull the steel beam and can reset the steel beam is connected between the bolts in each pair of the long strip holes at the beam ends; the steel support is hinged to the support connecting piece.
Preferably, the supporting connecting piece comprises a supporting connecting vertical plate and a supporting connecting transverse plate which are connected with each other, and a supporting connecting end plate is connected between the supporting connecting vertical plate and the supporting connecting transverse plate; the supporting and connecting vertical plate is provided with two rows of column end strip holes arranged along the height direction of the steel column, the supporting and connecting transverse plate is provided with two rows of beam end strip holes arranged along the length direction of the steel beam, and the supporting and connecting transverse plate is provided with hinge holes for the steel support to be rotatably connected.
Preferably, the two rows of column end elongated holes and the two rows of beam end elongated holes are respectively formed in two sides of the support connection end plate.
Preferably, the end of the steel support is provided with two connecting lug plates, and the support connecting end plate is inserted between the two connecting lug plates and is connected with the connecting lug plates through the hinge holes and the pin shafts.
Preferably, a column end rubber gasket is arranged between the steel column and the support connecting vertical plate, a beam end rubber gasket is arranged between the upper flange of the steel beam and the support connecting transverse plate, and gasket strip holes corresponding to the column end strip hole and the beam end strip hole are respectively arranged on the column end rubber gasket and the beam end rubber gasket.
The invention also provides a self-resetting SMA device at the node of the steel support beam column, which applies the support connecting piece, wherein the support connecting piece is arranged between the upper flanges of the steel column and the steel beam, the steel support is hinged on the support connecting piece, and the steel column is fixedly connected with the lower flange of the steel beam.
Preferably, the steel column is connected with the lower flange of the steel beam through a T-shaped connecting piece, the T-shaped connecting piece comprises a column end connecting vertical plate and a beam end connecting transverse plate which are connected with each other, the column end connecting vertical plate is connected with the steel column through bolts, and the beam end connecting transverse plate is connected with the lower flange of the steel beam through bolts.
Preferably, an angle steel connecting piece is arranged between the steel column and the web plate of the steel beam, and the angle steel connecting piece comprises an angle steel column end connecting plate and an angle steel beam end connecting plate which are connected with each other; the steel beam comprises a steel column and is characterized in that a web plate of the steel beam is provided with a plurality of arc-shaped holes, arc-shaped bolts connected with the angle steel beam end connecting plate through bolts are arranged in the arc-shaped holes, and the angle steel column end connecting plate is connected with the steel column through bolts.
Preferably, the rotating centroids of the arc-shaped holes are the central points of the joints of the T-shaped connecting pieces and the steel columns.
Preferably, the steel column is H-shaped steel, and the web plate of the steel column is provided with an in-column stiffening rib which is on the same horizontal plane with the upper flange and the lower flange of the steel beam.
Compared with the prior art, the invention has the following technical effects:
1. the supporting and connecting piece is applied to the node of a steel beam and a steel column in a steel frame structure with a support, the supporting and connecting piece is connected with the steel column through a column end long-strip hole and is connected with the steel beam long-strip hole bolt on the steel beam through a beam end long-strip hole, when the earthquake occurs, the supporting and connecting piece can slide along the vertical low friction of the steel column, meanwhile, due to the existence of the bolt, the supporting and connecting piece cannot move in the horizontal direction, but the steel beam can move along the horizontal direction and horizontally slide with the supporting and connecting piece in the low friction, under the action of the vertical low friction sliding and the horizontal friction sliding, on one hand, the rotation of the steel beam towards the steel column is realized, the rotation of the steel beam can buffer the hard impact brought by the earthquake, and on the other hand, the energy consumption of earthquake energy can be realized through friction. Be equipped with the SMA silk between the downthehole bolt end of roof beam end strip, when the girder steel rotated, the SMA silk was in the state of receiving the drawing all the time, drawing the girder steel and drawing in order to provide elasticity and draw, the SMA silk is drawn on the one hand and can be dissipated seismic energy, provides the ability that the girder steel resets, on the other hand can make the girder steel have sufficient ductility and rotation ability, avoid roof beam, post and support to produce damage or destruction before surging to and reduce the incomplete deformation risk of structure, solve the influence of steel column and girder steel node department effect of opening and shutting.
2. The end of steel shotcrete is equipped with two and connects the otic placode, and the steel shotcrete is articulated through connecting the otic placode and supporting the connecting piece, improves steel shotcrete and supporting the connecting piece joint strength on the one hand, and on the other hand two connect the otic placode with including the support connection end plate centre gripping in the supporting the connecting piece, can lead to the supporting the connecting piece, avoid the supporting the connecting piece to rock to both sides, and vertical sliding that can not be smooth and easy.
3. The column end rubber gasket and the beam end rubber gasket are arranged between the supporting and connecting piece and the steel column and between the supporting and connecting piece and the steel beam respectively, the elasticity and friction resistance of rubber are utilized, the buffering effect is achieved, the damage caused by rigid impact among the steel column, the steel beam and the supporting and connecting piece when the earthquake occurs is reduced, meanwhile, the friction force among the steel column, the steel beam and the supporting and connecting piece is improved, and the earthquake energy consumption capacity is improved.
4. The self-resetting SMA device adopts a supporting connecting piece, is arranged between the upper flanges of the steel column and the steel beam, and simultaneously fixedly connects the lower flanges of the steel column and the steel beam. When the earthquake occurs, the steel beam can rotate around the central point of the steel beam connected with the steel column, the supporting connecting piece generates vertical low-friction sliding energy consumption, the steel beam and the supporting piece connecting piece generate relative horizontal low-friction sliding energy consumption, the SMA wire pulls the steel beam to provide energy consumption and resetting capability so as to reduce the opening and closing effect of the node under complex load, reduce the damage of the node, and have high ductility and high-efficiency resetting capability.
5. The bottom flange of steel column and girder steel passes through T shape connecting piece and connects to improve the intensity of giving steel column and girder steel rotation point, avoid under the rotation repeatedly, lead to the destruction of girder steel and steel column rotation central point.
6. Set up angle steel connecting piece between the web of steel column and girder steel and further improve the stability of being connected between steel column and the girder steel. Simultaneously, the arc-shaped holes are formed in the steel beam web plates, the steel beams are connected with the angle steel connecting pieces through the arc-shaped holes and the arc-shaped bolts, on one hand, the arc-shaped holes do not influence the rotation of the steel beams, on the other hand, the arc-shaped bolts can dissipate seismic energy when moving in the arc-shaped holes, and then the energy consumption strength is further improved, the risk of residual deformation is reduced, and the opening and closing effect influence is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a self-resetting SMA device;
FIG. 2 is a schematic structural view of a support link;
FIG. 3 is a side view of the support link;
FIG. 4 is a schematic structural view of an angle iron connector;
FIG. 5 is a schematic view of a steel beam;
FIG. 6 is a schematic structural view of a T-shaped connector;
fig. 7 is a top view of a self-resetting SMA device.
Description of reference numerals: 1. a steel column; 2. a steel beam; 3. supporting steel; 4. a support link; 5. a T-shaped connector; 6. an angle steel connecting piece; 7. SMA wires; 8. an in-column stiffener; 9. a nut; 10. a common gasket; 11. a long round hole gasket; 211. a steel beam long hole; 212. an arc-shaped hole; 213. an arc bolt; 214. A steel beam bolt hole; 311. connecting the ear plates; 312. a pin shaft; 411. a support connecting vertical plate; 412. supporting and connecting the transverse plates; 413. supporting and connecting the end plate; 414. a column end elongated hole; 415. a beam-end elongated hole; 416. A hinge hole; 417. a vertical sliding bolt; 418. a horizontal sliding bolt; 419. a column end rubber gasket; 420. A beam-end rubber gasket; 511. the column end is connected with a vertical plate; 512. the beam end is connected with the transverse plate; 513. a cylindrical end circular hole; 514. a beam-end circular hole; 611. a connecting plate at the end of the angle steel column; 612. an angle beam end connecting plate; 613. round holes at the ends of the angle steel columns; 614. round holes at the ends of the angle steel beams; 615. a center point.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present embodiment provides a supporting and connecting member at a node of a steel supporting beam and column, which is used for connecting a steel column 1, a steel beam 2 and a steel support 3, as shown in fig. 1 to 7, a column end elongated hole 414 is disposed on a connecting surface of a supporting and connecting member 4 and the steel column 1, the column end elongated hole 414 is disposed along a height direction of the steel column 1, and after a vertical sliding bolt 417 passes through the column end elongated hole 414 and a bolt hole on the steel column 1, nuts 9 are mounted at two ends of the column end elongated hole 414, so as to bolt the supporting and connecting member 4 on the steel column 1. The connection surface of the supporting connection member 4 and the steel beam 2 is provided with beam end elongated holes 415, the beam end elongated holes 415 are arranged in pairs along the length direction of the steel beam 2, the upper flange of the steel beam 2 is provided with beam end elongated holes 211, the number and the size of the beam end elongated holes 211 are the same as those of the beam end elongated holes 415, after the beam end elongated holes 415 and the beam end elongated holes 211 are in one-to-one correspondence, horizontal sliding bolts 418 are inserted, two nuts 9 are respectively arranged at the two ends of the horizontal sliding bolt 418, an SMA wire 7 is arranged between the horizontal sliding bolts 418 in the long holes 415 at each pair of beam ends, the SMA wire 7 is wound between the two nuts 9 at the ends of the horizontal sliding bolts 418 and is clamped by the two nuts 9, after the SMA wire 7 is wound, the SMA wire 7 tightens the two horizontal sliding bolts 418, so that the horizontal sliding bolts 418 are tightly attached to the opposite ends of the two beam end elongated holes 415 and the opposite ends of the two steel beam elongated holes 211; the steel support 3 is hinged to the support connection 4. During the earthquake, girder steel 2 can rotate towards steel column 1, and when girder steel 2 rotated downwards, support connection 4 can take place vertical low friction along steel column 1 and slide the power consumption, because vertical slip bolt 417's spacing, support connection 4 is kept motionless at the horizontal direction this moment. The steel beam 2 can horizontally slide along the length direction of the steel beam 2, and the low-friction sliding of the steel beam 2 and the supporting connecting piece 4 in the horizontal direction is carried out to consume energy, because the horizontal sliding screw 34 of each pair of horizontal sliding screws 34 close to the steel column 1 is close to the ends of the beam end strip hole 415 and the steel beam strip hole 211, the horizontal sliding screw 34 close to the side of the steel column 1 is fixed, and the horizontal sliding screw 34 far away from the side of the steel column 1 can slide towards the direction far away from the steel column 1 together under the pushing of the steel beam 2, so that the SMA wires 7 between the horizontal sliding screws 34 are pulled to provide the reset pulling force for the steel beam 2. When the steel beam 2 rotates upwards, the horizontal sliding screw 34 far away from one side of the steel column 1 is not moved, the horizontal sliding screw 34 close to one side of the steel column 1 moves towards the steel column 1 under the pushing of the steel beam 2, the SMA wire 7 is pulled, the steel beam 2 is pulled back, and the SMA wire 7 is ensured to be pulled all the time under the combined action of the two paired beam end strip holes 415 and the two paired steel beam strip holes 211.
In this embodiment, as shown in fig. 1 to 7, the supporting and connecting member 4 includes a supporting and connecting vertical plate 411, a supporting and connecting transverse plate 412 and a supporting and connecting end plate 413, an end of the supporting and connecting transverse plate 412 is vertically connected to the bottom of the supporting and connecting vertical plate 411, a side wall of the supporting and connecting end plate 413 is connected to the supporting and connecting vertical plate 411, a bottom surface of the supporting and connecting end plate 413 is fixedly connected to the supporting and connecting transverse plate 412, and the connecting manner can be selected for welding and can be integrally formed. Be equipped with two rows of column end rectangular holes 414 on supporting connection riser 411, column end rectangular hole 414 all arranges along the direction of height of steel column 1 to guarantee that supporting connection 4 can slide from top to bottom along the direction of height of steel column 1, then will support connection riser 411 bolted connection on steel column 1 through column end rectangular hole 414 and vertical slip bolt 417. Two rows of beam end strip holes 415 arranged along the length direction of the steel beam 2 are formed in the supporting and connecting transverse plate 412, and after the horizontal sliding bolts 418 are inserted into the beam end strip holes 415 and the steel beam strip holes 211, the supporting and connecting piece 4 is connected to the upper flange of the steel beam 2 through bolts, so that the steel beam 2 can horizontally slide along the length direction of the steel beam 2 after being vibrated. Under the combined action of vertical sliding and horizontal sliding, the steel beam 2 can rotate towards the direction of the steel column 1. The support connection end plate 413 is provided with a hinge hole 416, and the steel support 3 is hinged on the support connection member 4 through the hinge hole 416 and the pin shaft 312.
Further, in this embodiment, the supporting connection vertical plate 411 and the supporting connection horizontal plate 412 are both rectangular plates, and the supporting connection member 4 is a trapezoidal plate.
Further, in the present embodiment, the two rows of column end bar holes 414 and the two rows of beam end bar holes 415 are respectively disposed on two sides of the support connection end plate 413, that is, the support connection end plate 413 is disposed at the middle position between the support connection vertical plate 411 and the support connection horizontal plate 412, so as to improve the stress condition of the support connection member 4.
Further, in the present embodiment, as shown in fig. 1, fig. 2, fig. 3 and fig. 7, a total of four column end elongated holes 414 are provided, and two column end elongated holes 414 are provided as a pair of pairs to support two sides of the connection end plate 413. The beam end elongated holes 415 are four in total, and two beam end elongated holes 415 are a pair of two pairs and are arranged on two sides of the support connection end plate 413.
In this embodiment, as shown in fig. 1, 2, 3 and 7, two connection ear plates 311 are provided at the ends of the steel support 3, and preferably, the steel support 3 and the connection ear plates 311 are integrally formed. The connecting ear plates 311 are provided with pin shaft holes corresponding to the hinge holes 416, and after the supporting connecting end plate 413 is inserted between the two connecting ear plates 311, the pin shaft 312 is inserted through the hinge holes 416 and the pin shaft holes, so that the connecting ear plates 311 are hinged on the supporting connecting end plate 413.
In order to protect the supporting and connecting member 4, the steel beam 2 and the steel column 1 from being damaged by collision in an earthquake and improve the frictional resistance between the supporting and connecting member and the steel column 1, in this embodiment, a column end rubber gasket 419 is disposed between the steel column 1 and the supporting and connecting riser 411, and a gasket strip hole having the same size as the column end strip hole 414 is formed in the column end rubber gasket 419. The vertical sliding bolt 417 is inserted into the column end long hole 414 on the support connecting piece 4, the gasket long hole on the column end rubber gasket 419 and the bolt round hole on the steel column 1 in sequence, the end of the vertical sliding bolt 417 extending out of the column end long hole 414 is provided with a long round hole gasket 11 and is screwed by a nut 9, and the end of the vertical sliding bolt 417 extending out of the steel column 1 is provided with a common gasket 10 and is screwed by the nut 9. A beam end rubber gasket 420 is arranged between the upper flange of the steel beam 2 and the supporting and connecting transverse plate 412, and a gasket long hole with the same size as the beam end long hole 415 is formed in the beam end rubber gasket 420. The horizontal sliding bolt 418 sequentially passes through the beam end strip hole 415 on the supporting and connecting piece 4, the gasket strip hole on the beam end rubber gasket 420 and the steel beam strip hole 211 on the steel beam 2, then the two ends of the horizontal sliding bolt 418 are both provided with the slotted hole gaskets 11, then the screw caps 9 are screwed in, and then the SMA wires 7 are wound, and then one screw cap 9 is arranged to clamp the SMA wires 7. Preferably, the column-end rubber gasket 419 and the beam-end rubber gasket 420 are butyl rubber gaskets, and the butyl rubber has good air tightness, strong heat resistance, ozone resistance, aging resistance, chemical resistance and good shock absorption performance.
The embodiment also provides a self-resetting SMA device at a node of a steel supporting beam column, which applies the supporting connecting piece 4, as shown in fig. 1 to 7, the supporting connecting piece 4 is arranged between the upper flanges of the steel column 1 and the steel beam 2, the steel support 3 is hinged on the supporting connecting piece 4, and the lower flanges of the steel column 1 and the steel beam 2 are fixedly connected. When the steel beam is subjected to earthquake, the steel beam 2 can rotate around the lower flange joint of the steel column 1 and the steel beam 2, the supporting connecting piece 4 generates vertical low-friction sliding energy consumption up and down, meanwhile, the steel beam 2 generates horizontal low-friction sliding energy consumption between the length direction of the steel beam 2 and the supporting connecting piece 4, and under the action of the horizontal sliding bolt 418 and the SMA wire 7, the steel beam 2 is always pulled, so that the opening and closing effect of the connecting node under the common combination of axial force, shearing force and bending moment is effectively reduced, the resetting and energy consumption capabilities are provided for the connecting node, and the earthquake resistance and the function recovery capability after the earthquake of the steel structure beam column node are improved.
In this embodiment, as shown in fig. 1, 5 and 6, the lower flanges of the steel column 1 and the steel beam 2 are connected by a T-shaped connecting member 5, the T-shaped connecting member 5 includes a column end connecting vertical plate 511 and a beam end connecting transverse plate 512, and the end of the beam end connecting transverse plate 512 is fixedly connected with the middle of the column end connecting vertical plate 511, and may be welded or integrally formed. The column end connecting vertical plate 511 is provided with a plurality of column end round holes 513, the beam end connecting transverse plate 512 is provided with a plurality of beam end round holes 514, the column end round holes 513 are connected with the steel column 1 through common bolts, and then common gaskets 10 and nuts 9 are respectively installed at two ends of the common bolts for fastening. The lower flange of the steel beam 2 is provided with a plurality of steel beam bolt holes 214, the beam end round holes 514 and the steel beam bolt holes 214 are connected through common bolts, and common gaskets 10 and nuts 9 are respectively arranged at two ends of the common bolts for fastening. In this embodiment, preferably, the column-end connecting vertical plate 511 and the beam-end connecting horizontal plate 512 are rectangular plates, and the beam-end circular hole 514, the column-end circular hole 513, the steel beam bolt hole 214, and the bolt hole on the steel column 1 are all four, so as to ensure that the T-shaped connecting member 5 is stably connected with the steel column 1 and the steel beam 2. The central point 615 of the contact position between the connecting position of the column end connecting vertical plate 511 and the beam end connecting transverse plate 512 and the steel column 1 is a rotation centroid point of the steel beam 2 rotating around the steel column 1. Namely, the steel beam 2 rotates around the rotation centroid point when being shocked.
In this embodiment, as shown in fig. 1 and 4, angle steel connectors 6 are disposed on two sides of a web of the steel beam 2, each angle steel connector 6 includes an angle steel column end connecting plate 611 and an angle steel beam end connecting plate 612, and an end of each angle steel beam end connecting plate 612 is fixedly connected to a bottom of each angle steel column end connecting plate 611, preferably welded or integrally formed. The angle steel column end connecting plate 611 is provided with a plurality of angle steel column end round holes 613, ordinary bolts are inserted into the angle steel column end round holes 613 and then are in bolted connection with bolt holes in the steel column 1, and then ordinary gaskets 10 and nuts 9 are sequentially mounted at two ends of the ordinary bolts for fastening. Angle steel beam end connecting plate 612 is equipped with a plurality of angle steel beam end round holes 614, is equipped with a plurality of arc holes 212 on the web of girder steel 2, and arc bolt 213 inserts and carries out bolted connection after the center of arc hole 212 aligns with angle steel beam end round hole 614. Preferably, two angle steel column end circular holes 613 are arranged on the single angle steel connecting piece 6, four angle steel beam end circular holes 614 are arranged, and four arc-shaped holes 212 are arranged.
In order to ensure that the steel beam 2 can rotate around the center point 615, in the embodiment, as shown in fig. 1, the rotational centroids of the plurality of arc-shaped holes 212 are all set to be the center point 615 of the connection between the T-shaped connecting member 5 and the steel column 1. So that the steel beam 2 can smoothly rotate around the central point 615.
As shown in fig. 1, the steel column 1 is H-shaped steel, and a plurality of internal stiffening ribs 8 are arranged on two sides of a web plate of the steel column 1. Preferably, stiffening rib 8 has four in the post, and two liang each other are each other a set of branch and establish the both sides at 1 web of steel column, and stiffening rib 8 sets up the position respectively with the top flange and the bottom flange of girder steel 2 on same horizontal plane in the post on 1 web unilateral of steel column, through setting up 8 improvement stiffening ribs in the post steel column 1 and bear the impact of the power that girder steel 2 rotated and bring, improves the overall structure intensity of steel column 1 to improve the shock resistance, avoid taking place to warp.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; also, it is obvious to those skilled in the art that various changes and modifications can be made in the embodiments and applications of the invention. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A supporting connecting piece at a steel supporting beam column node is used for connecting a steel column, a steel beam and a steel support, and is characterized in that a column end long-strip hole arranged along the height direction of the steel column and beam end long-strip holes arranged in pairs along the length direction of the steel beam are arranged on the supporting connecting piece, and the supporting connecting piece is connected to the steel column through the column end long-strip holes in a bolt mode; the upper flange of the steel beam is provided with a steel beam long hole corresponding to the beam end long hole, and the steel beam long hole is connected with the beam end long hole through a bolt; an SMA wire which can always pull the steel beam and can reset the steel beam is connected between the bolts in each pair of the long strip holes at the beam ends; the steel support is hinged on the support connecting piece.
2. The support connecting piece at the node of the steel support beam column according to claim 1, wherein the support connecting piece comprises a support connecting vertical plate and a support connecting transverse plate which are connected with each other, and a support connecting end plate is connected between the support connecting vertical plate and the support connecting transverse plate; the steel column supporting and connecting device is characterized in that two rows of column end strip holes arranged in the height direction of the steel column are formed in the supporting and connecting vertical plate, two rows of beam end strip holes arranged in the length direction of the steel beam are formed in the supporting and connecting transverse plate, and hinge holes for the steel support to be rotatably connected are formed in the supporting and connecting end plate.
3. A support connection at a steel support beam column node according to claim 2, wherein two rows of said column end strap apertures and two rows of said beam end strap apertures are provided on either side of said support connection end plate.
4. The supporting connection member at the node of the steel supporting beam column as claimed in claim 3, wherein the end of the steel support is provided with two connecting ear plates, and the supporting connection end plate is inserted between the two connecting ear plates and connected with the connecting ear plates through the hinge holes and the pin shaft.
5. The support connection member at the joint of the steel support beam column according to any one of claims 2 to 4, wherein a column end rubber gasket is arranged between the steel column and the support connection vertical plate, a beam end rubber gasket is arranged between the upper flange of the steel beam and the support connection transverse plate, and gasket elongated holes corresponding to the column end elongated hole and the beam end elongated hole are respectively arranged on the column end rubber gasket and the beam end rubber gasket.
6. The self-resetting SMA device at the node of the steel supporting beam column is applied to the supporting connecting piece at the node of the steel supporting beam column, which is characterized in that the supporting connecting piece is arranged between the upper flanges of the steel column and the steel beam, the steel support is hinged on the supporting connecting piece, and the steel column is fixedly connected with the lower flange of the steel beam.
7. The self-resetting SMA device for a steel supporting beam-column joint of claim 6, wherein the steel column and the lower flange of the steel beam are connected by a T-shaped connecting piece, the T-shaped connecting piece comprises a column end connecting vertical plate and a beam end connecting transverse plate which are connected with each other, the column end connecting vertical plate is connected with the steel column through bolts, and the beam end connecting transverse plate is connected with the lower flange of the steel beam through bolts.
8. The self-resetting SMA device at a node of a steel supporting beam column according to claim 6, wherein an angle steel connector is arranged between the steel column and the web of the steel beam, and the angle steel connector comprises an angle steel column end connecting plate and an angle steel beam end connecting plate which are connected with each other; the steel beam comprises a steel column and is characterized in that a web plate of the steel beam is provided with a plurality of arc-shaped holes, arc-shaped bolts connected with the angle steel beam end connecting plate through bolts are arranged in the arc-shaped holes, and the angle steel column end connecting plate is connected with the steel column through bolts.
9. The self-resetting SMA device in a node of a steel supporting beam and column according to claim 8, wherein the rotation centroids of the plurality of arc-shaped holes are the central points of the joints of the T-shaped connecting pieces and the steel columns.
10. The self-resetting SMA device for a node of a steel supporting beam column according to claim 6, wherein the steel column is H-shaped steel, and the web of the steel column is provided with an inner column stiffening rib which is on the same horizontal plane with the upper flange and the lower flange of the steel beam.
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| CN202110526954.6A CN113216436B (en) | 2021-05-14 | 2021-05-14 | Supporting connecting piece at joint of steel supporting beam column and self-resetting SMA device |
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Cited By (3)
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| CN114086667A (en) * | 2021-12-30 | 2022-02-25 | 中国电建集团贵阳勘测设计研究院有限公司 | S-shaped node for steel structure |
| CN114922290A (en) * | 2022-06-10 | 2022-08-19 | 湖南省富生钢结构有限公司 | Complicated node and steel column with complicated node |
| CN115492122A (en) * | 2022-09-23 | 2022-12-20 | 中冶华天南京工程技术有限公司 | Fabricated lateral force resisting bracket for deep foundation pit section steel support and construction method |
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