CN116464155A - Swinging self-resetting steel tube profile steel recycled concrete frame with replaceable energy consumption elements - Google Patents
Swinging self-resetting steel tube profile steel recycled concrete frame with replaceable energy consumption elements Download PDFInfo
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- CN116464155A CN116464155A CN202310607511.9A CN202310607511A CN116464155A CN 116464155 A CN116464155 A CN 116464155A CN 202310607511 A CN202310607511 A CN 202310607511A CN 116464155 A CN116464155 A CN 116464155A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 225
- 239000010959 steel Substances 0.000 title claims abstract description 225
- 238000005265 energy consumption Methods 0.000 title claims abstract description 58
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 30
- 230000006378 damage Effects 0.000 abstract description 14
- 230000002829 reductive effect Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 12
- 238000011084 recovery Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 210000003108 foot joint Anatomy 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
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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
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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
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
-
- 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
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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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
-
- 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
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a swinging self-resetting steel tube type steel recycled concrete frame with replaceable energy consumption elements, which comprises a concrete base, a steel tube type steel recycled concrete column and a steel beam, wherein the concrete base is connected with the bottom of the steel tube type steel recycled concrete column through a column bottom curved surface; under the action of earthquake, the energy dissipation plate dissipates energy through plastic deformation of the energy dissipation plate by swinging and rotating, so that the main body member in the node basically keeps elasticity, the earthquake resistance under strong earthquake is improved, and the damage of the node is effectively reduced.
Description
Technical Field
The invention belongs to the technical field of building structure earthquake-resistant structures, and particularly relates to a swinging self-resetting steel tube type steel recycled concrete frame with replaceable energy consumption elements.
Background
The nodes of the frame structure built by conventional seismic design methods are typically rigid nodes. According to the recent years, the damage of domestic and foreign earthquakes shows that the joint connection area of the concrete frame structure is a weak position, and the joint is possibly severely damaged after the earthquake and cannot be repaired due to the lack of enough ductility, so that the reverse reconstruction can be deduced, and huge economic loss is caused.
With the increasing of the living standard of people, the requirement of users on the earthquake resistance of buildings is further improved, and the earthquake resistance design becomes the research development direction of the current earthquake engineering community. On the basis of meeting the basic requirements of 'small earthquake is not damaged, medium earthquake is repairable, and large earthquake is not fallen', how to lighten earthquake damage and quickly recover the use function is the front research direction of the current building earthquake-resistant field.
The past earthquake damage shows that the structural design cannot only meet the requirement of protecting life safety when an earthquake occurs, but the self-repairing of the structure after the earthquake and the recovery of the original functions are placed at the same important positions so as to ensure the rapid recovery of life and production of disaster areas. Although the swing frame can effectively reduce earthquake damage, larger swing deformation increases the overturning moment, the restriction of the foundation to the column base is limited, the anti-overturning capacity of the structure is reduced, the risk of overturning the structure is increased, and the exertion and application of the anti-seismic performance of the unfavorable structure are realized.
Disclosure of Invention
The invention aims to provide a swinging self-resetting steel tube type steel recycled concrete frame with replaceable energy consumption elements, which can form plastic deformation when swinging and rotating at beam column joints and column foot joints, so as to dissipate seismic energy and further reduce seismic damage and destruction of the joints.
The invention adopts the technical scheme that the swinging self-resetting steel tube type steel recycled concrete frame with the replaceable energy dissipation elements comprises a concrete base, a steel tube type steel recycled concrete column and a steel beam, wherein the concrete base is connected with the bottom of the steel tube type steel recycled concrete column through a column bottom curved surface, the outer wall of the steel tube type steel recycled concrete column is connected with the concrete base through an energy dissipation support plate, and the side wall of the steel tube type steel recycled concrete column is connected with the steel beam through a beam column energy dissipation self-resetting structure.
The invention is also characterized in that:
the steel tube type steel recycled concrete column comprises cross-shaped steel and a square steel tube, wherein the cross-shaped steel is arranged in the square steel tube, the bottom of the cross-shaped steel is longer than the square steel tube, recycled concrete is poured in the square steel tube, the part of the cross-shaped steel, which is positioned outside the square steel tube, is the bottom of the square steel tube, the cross-shaped steel is connected with one end of a column bottom curved surface through a bolt, the other end of the column bottom curved surface is connected with a concrete base, the outer wall of the bottom of the square steel tube is connected with one edge of an energy dissipation supporting plate, and the other opposite edge of the energy dissipation supporting plate is connected with the concrete base.
Four embedded steel materials are embedded upwards in the concrete base, the width of each embedded steel material is smaller than the length of the cross-shaped steel arm, and the four embedded steel materials are in contact connection with the cross-shaped steel in different sections.
The outer wall of the bottom of the square steel pipe is connected with one edge of the energy dissipation supporting plate through a gasket.
The column bottom curved surface is connected with the concrete base through a plurality of bolts, and the bolts are positioned above the column bottom curved surface and are respectively sleeved with a disc spring.
The beam column energy consumption self-resetting structure comprises two brackets, wherein a groove is formed in each bracket, the bottoms of the grooves of the two brackets are respectively connected with the steel tube type steel recycled concrete column and the steel beam at the opposite positions, a beam end curved plate is placed in the groove of each bracket, the bracket is close to the bottom and is connected with the beam end curved plate inside the bracket through a supporting cylinder, two supporting grooves are formed in each beam end curved plate, the beam end curved plate has deformation elasticity, the beam end self-resetting structure further comprises an X-shaped rotating shaft, four ends of the X-shaped rotating shaft respectively extend into the supporting grooves of the two beam end curved plates, and the X-shaped rotating shaft and the two brackets are connected with one rotating shaft.
The SMA stranded wire is tied on the outer part of the beam end curved plate.
The depth of the supporting groove in the beam end curved plate is smaller than the arm length of the X-shaped rotating shaft.
And a plurality of ribs are welded on the outer wall of the beam end curved plate.
The steel tube type steel recycled concrete column is connected with the outer wall of the steel beam through energy dissipation plates, and a plurality of holes are formed in the energy dissipation plates.
The beneficial effects of the invention are as follows:
(1) Under the action of earthquake, the energy dissipation plate dissipates energy through plastic deformation of the energy dissipation plate by the node mainly through swinging and rotation, so that the main body member in the node basically keeps elasticity, the earthquake resistance under strong earthquake is improved, and the damage of the node is effectively reduced.
(2) The self-resetting capability of the beam column node is realized through the mutual constraint of the X-shaped rotating shaft and the curved plate, the requirements under different conditions can be met by adjusting the contact area, the size and the position of the X-shaped rotating shaft and the curved plate, and the larger size can additionally increase the self-resetting member, such as an SMA stranded wire and the like, so as to increase the resettable capability of the beam column node, in particular to the curved plate at the beam end.
(3) By releasing partial constraint of the nodes, when a medium or small earthquake occurs, the energy consumption plate mainly plays an energy consumption role to absorb earthquake energy, and the curved plate recovers an initial shape through elastic deformation; after major earthquake occurs, the beam column node support begins to bear force to consume energy, the energy consumption plate deforms and fails, all steel members of the beam column node are fully utilized to consume energy, damage to the beam column is reduced, the column foot node swings, plastic deformation energy consumption is caused to pre-buried steel materials, and the plurality of disc springs also enable the self-recovery capacity of the structure to be remarkably improved, and sufficient time is provided for maintenance and rush repair of staff.
(4) The energy consumption plates can uniformly share the bearing capacity. The middle part of the energy consumption plate is provided with a plurality of square holes, so that the cross-sectional area of the energy consumption support can be effectively weakened; under the action of external force, the plastic hinge is firstly arranged at the weakening position of the energy consumption plate, so that the deformation of the node is transferred and concentrated on the energy consumption plate, the energy consumption effect is realized, and the large deformation of the middle part is avoided.
(5) Meanwhile, the main energy consumption devices are fixed on the outer side of the structure through bolts, if the energy consumption devices are damaged after an earthquake, the corresponding energy consumption devices can be replaced outside, the corresponding energy consumption devices can be replaced quickly, if the internal components can not be used, the internal components can also be replaced, and all components of the whole beam column node can be replaced. The number, size, shape and position of the openings of the energy consumption plates can be adjusted according to actual conditions. The structure has definite stress and reliable force transmission, has the characteristics of replacing sections and quickly recovering functions after being damaged by strong vibration, and solves the problems of poor energy consumption capability, repair after vibration damage and the like of the traditional frame structure.
(6) All the components of the invention can be constructed in a factory processing and current assembly mode. Through the structure provided with the holes in advance, each part can be connected with the column bottom connecting assembly of the concrete foundation assembly through the preset connecting holes, so that the requirement of on-site operation is reduced, and the construction period is shortened.
Drawings
FIG. 1 is a schematic diagram of a swing self-resetting steel tube section steel recycled concrete frame structure with replaceable energy-consuming elements;
FIG. 2 is a schematic view of the structure of the toe portion of the present invention;
FIG. 3 is a schematic diagram of the connection relationship of the toe portion of the present invention;
FIG. 4 is a horizontal cross-sectional view of the toe portion of the present invention;
FIG. 5 is a schematic view of the structure of the curved panel of the present invention;
FIG. 6 is a schematic diagram of an energy dissipating support plate according to the present invention;
FIG. 7 is a schematic view of the structure of the gasket of the present invention;
FIG. 8 is a schematic view of the structure of a beam-column joint in the present invention;
FIG. 9 is a cross-sectional view of a beam-column joint portion of the present invention;
FIG. 10 is a schematic view of the positional relationship between a shaft and a self-resetting member according to the present invention;
FIG. 11 is a schematic view of the connection relationship of the brackets in the present invention;
FIG. 12 is a schematic view of the structure of the energy dissipating plate of the present invention;
fig. 13 is a schematic diagram of a structure in which SMA wires are additionally added to a beam-column joint in the present invention.
The steel pipe type steel recycled concrete column comprises a steel beam 1, a steel pipe type steel recycled concrete column 2, an energy consumption supporting plate 3, a gasket 4, a column bottom curved plate 6, a disc spring 7, pre-embedded steel, a concrete base 8, a 9.X-shaped rotating shaft 10, a beam end curved plate 11, a bracket 12, a supporting cylinder 13, an energy consumption plate 14 and an SMA stranded wire.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
Example 1
The invention relates to a swinging self-resetting steel tube type steel recycled concrete frame with replaceable energy consumption elements, which is shown in figure 1 and comprises a concrete base 8, steel tube type steel recycled concrete columns 2 and steel beams 1, wherein the adjacent steel tube type steel recycled concrete columns 2 are connected with the steel beams 1 through beam column energy consumption self-resetting structures, the concrete base 8 is connected with the bottom of the steel tube type steel recycled concrete columns 2 through column bottom curved surfaces 5, the outer wall of the steel tube type steel recycled concrete columns 2 is connected with the concrete base 8 through energy consumption supporting plates 3, and the side walls of the steel tube type steel recycled concrete columns 2 are connected with the steel beams 1 through beam column energy consumption self-resetting structures; the column bottom curved surface 5 and the beam column energy consumption self-resetting structure form plastic deformation when the node swings and rotates, so that the earthquake energy is dissipated, and the earthquake damage and destruction of the node are reduced.
Example 2
On the basis of embodiment 1, steel tube type steel recycled concrete column 2 includes cross shaped steel and square steel pipe, and the cross shaped steel sets up in square steel pipe, and cross shaped steel bottom is longer than square steel pipe, pours recycled concrete in the square steel pipe, and the part that cross shaped steel is located square steel pipe is the bottom, and the cross shaped steel that is located outside the square steel pipe passes through bolted connection column bottom curved surface 5 one end, and the column bottom curved surface 5 other end is connected on the concrete foundation 8, and as shown in fig. 2, square steel pipe bottom outer wall connection power consumption backup pad 3 one edge, and the other opposite edge connection concrete foundation 8 of power consumption backup pad 3. When an earthquake occurs, the energy dissipation support plate 3 deforms, and plastic deformation is performed to dissipate energy.
Grooves can be preset around the square steel pipe on the same side, the width of each groove is the thickness of the steel plate, and the depth is the insertion depth of the energy dissipation supporting plate 3; the outside of the bottom of the square steel tube is provided with a groove for the gasket to clamp.
As shown in fig. 3, one end of the energy dissipation support plate 3 is connected with the steel tube type steel recycled concrete column 2 through bolts, and the other end of the energy dissipation support plate is connected with the concrete base 8 through bolts; one end of the steel tube type steel recycled concrete column 2 is connected, inserted into a preset groove of the concrete column, and the outer side face of the steel tube type steel recycled concrete column 2 is flush with the outer side face of the steel tube type steel recycled concrete column; a groove is preset near the position close to the steel tube type steel recycled concrete column 2, and a gasket 4 can clamp the groove; the energy dissipation support plate 3 is provided with a plurality of square holes, so that the cross-sectional area of the energy dissipation support plate can be effectively weakened; the corner of the energy dissipation supporting plate 3 is ribbed, so that the weak point of the component is solved, and the damage is concentrated at the cavity.
As shown in fig. 4 and 5, one end of the column bottom curved surface 5 is fixed on a cross-shaped steel flange through bolts, the other end of the column bottom curved surface is connected with a concrete base 8 through a plurality of bolts, the bolts are positioned above the column bottom curved surface 5 and are respectively sleeved with a disc spring 6, and the self-recovery capacity of column foot joints is improved through the disc springs 6; the design of the disc spring 6 is determined according to the design rotation displacement of the column base, the self-resetting restoring force and other parameters.
As shown in fig. 6, four embedded steel materials 7 are embedded upwards in the concrete base 8, and a part of constraint is released while the position of the steel materials is restrained, and the steel materials can be channel steel or square steel pipes, so that column bases can swing in the opposite direction of the embedded steel materials; the width of each embedded steel 7 is smaller than the length of the cross-shaped steel arm, and four embedded steel 7 are in contact connection with the cross-shaped steel in different sections. When square steel pipes are used, the concrete base 8 is firstly cast, meanwhile, steel materials 7 are pre-embedded according to the same rotation direction, and the extended section steel of the steel pipe section steel recycled concrete column 2 can be placed in gaps between the steel materials, so that the relative position of the section steel can be determined; and the section steel of the steel tube type steel recycled concrete column 2 is placed in the gap of the embedded steel 7. The steel section extended from the steel pipe type steel recycled concrete column 2 swings in the gap of the embedded steel 7, and the column bottom curved plate 5 and the energy dissipation supporting plate 3 deform.
The outer wall of the bottom of the square steel pipe is connected with one edge of the energy dissipation supporting plate 3 through a bolt penetrating through the gasket 4, the gasket 4 can prevent the stress at the bolt part from being concentrated too much, and the energy dissipation supporting plate 3 is prevented from tilting at the side.
As shown in fig. 7, two rows of bulges are arranged on one side of the gasket 4, and can be clamped into the steel tube type steel recycled concrete column 2 and the energy consumption supporting plate 3, and the two bulges are fixed by bolts, so that the two bulges are contacted with each other, the force transmission is uniform, and the local damage of the component is prevented.
As shown in fig. 8 and 9, the beam column energy consumption self-resetting structure comprises two brackets 11, grooves are formed in each bracket 11, bottoms of the grooves of the two brackets 11 are respectively connected to the relative positions of the steel tube type steel recycled concrete column 2 and the steel beam 1, beam end curved plates 10 are placed in the grooves of each bracket 11, the positions, close to the bottoms, of the brackets 11 are connected with the beam end curved plates 10 inside the brackets through supporting cylinders 11, and the supporting cylinders 11 can prevent the brackets 11 from buckling partially.
Example 3
On the basis of embodiment 1, as shown in fig. 10 and 11, two supporting grooves are formed in each beam end curved plate 10, the beam end curved plates 10 have deformation elasticity, the beam end curved plates further comprise an X-shaped rotating shaft 9, four ends of the X-shaped rotating shaft 9 extend into the supporting grooves of the two beam end curved plates 10 respectively, the X-shaped rotating shaft 9 and the two brackets 11 are connected to one rotating shaft, the steel beam 1 drives the same side bracket 11 and the beam end curved plates 10 to swing relative to the X-shaped rotating shaft 9, the X-shaped rotating shaft 9 can enable the two beam end curved plates 10 to deform, the beam end curved plates 10 consume energy through plastic deformation, and meanwhile the energy consumption plates on the two sides are in a stressed state to consume seismic energy, and the beam end curved plates 10 press the brackets 11 to consume energy under stress.
The support cylinder 11 passes through the middle position of the two branch grooves of the beam end curved plate 10, so that the middle of the support 11 can be prevented from being deformed due to the bulge formed by the hollowness, the local deformation is prevented, the fixing effect is realized, and the maximum deformation of the curved plate can be limited.
The brackets 11 are two groups, and in order to facilitate installation, the joint parts are polished to enable the brackets to be in flat contact with each other; the maximum mutual rotation angle of the bracket 11 can be controlled by polishing the branch grooves; each side is fixed with a beam end curved plate 10 through two pin shafts, and X-shaped rotating shafts 9 are arranged at the right center positions of the connection of the brackets 11 on the two sides through the pin shafts.
The X-shaped rotating shaft 9 is inserted into a branch groove in the beam end curved plate 10; the steel sheet is formed by combining a plurality of X-shaped steel sheets, and the relative positions of the steel sheets are fixed at four corners through pin shafts; the actual form and size of the rotating shaft are determined according to different actual conditions.
The bracket is fit to the actual shape according to the beam end curved plate style.
The depth of the inner branch groove of the beam end curved plate 10 is smaller than the arm length of the X-shaped rotating shaft 9, and when the X-shaped rotating shaft 9 swings, the beam end curved plate 10 can deform relative to the X-shaped rotating shaft 9.
The X-shaped rotating shaft 9 can also be replaced by a rice-shaped rotating shaft, and three branch grooves are correspondingly formed in each beam end curved plate 10.
Example 4
On the basis of the embodiment 1, a plurality of ribs are welded on the outer wall of the beam end curved plate 10, so that the beam end curved plate can be prevented from being locally buckled on the outer side of the beam end curved plate due to extrusion of two sides of the bracket, and the beam end curved plate can be pressed by the bracket to bear force and consume energy when needed.
As shown in fig. 12, the steel tube type steel recycled concrete column 2 is connected with the outer wall of the steel beam 1 through the energy dissipation plate 13, and a plurality of holes are formed in the energy dissipation plate 13, so that the cross-sectional area of the energy dissipation plate can be effectively weakened.
As shown in fig. 13, the SMA wires 14 are externally tied to the beam end curved panel 10 to increase the resettable ability of the beam-column joint, particularly the beam end curved panel.
The invention relates to a swinging self-resetting steel tube type steel recycled concrete frame with replaceable energy consumption elements, which comprises the following working principles:
in the installation process, on a beam column node, a bracket 11-1 can be firstly installed on a steel beam 1 through bolts; the supporting cylinder 12 is fixed in the middle hole of the bracket 11-1 through bolts; the bracket 11-2 is mounted on the steel tube type steel recycled concrete column 2 through bolts; the supporting cylinder 12 is fixed in the middle hole of the bracket 11-2 through bolts; the beam end curved plate 10 and the X-shaped rotating shaft 9 are arranged in the middle of the bracket 11-2 through two pin shafts according to the form of figure 10; the opposite side of the bracket 11-2 is inserted into the bracket 11-1; is arranged in the middle of the bracket 11-1 through two other pin shafts; the middle hole of the rotating shaft is fixed through a pin shaft; one end of the energy consumption plate is mounted on the steel tube type steel recycled concrete column 2 through a bolt, and the other end of the energy consumption plate is mounted on the steel beam 1 through a bolt.
On the column foot node, a concrete base 8 is firstly injected, meanwhile, steel materials are pre-embedded according to the same rotation direction, and the extended section steel of the steel pipe section steel recycled concrete column 2 can be placed in gaps among the steel materials, so that the relative position of the section steel can be determined; the section steel of the steel tube section steel recycled concrete column 2 is placed in the pre-buried steel gap; one end of the column bottom curved plate 5 is fixed to a section steel flange through a bolt, and the other end is fixed to a concrete base 8 through a disc spring 6; one end of the energy consumption supporting plate 3 is inserted into a reserved gap of the steel tube type steel recycled concrete column 2, and the other end is mounted on the concrete base 8 through bolts; the bulges of the gaskets 4 are aligned with the grooves of the steel tube type steel recycled concrete column 2 and the energy consumption supporting plate 3, and the positions are fixed through bolts.
When an earthquake occurs, on beam column joints, the steel beam 1 drives the same side beam end curved plate 10 to swing relative to the X-shaped rotating shaft 9, the X-shaped rotating shaft 9 can deform the beam end curved plates 10 at two sides, the beam end curved plates 10 consume energy through plastic deformation, and meanwhile, the energy consumption plates at two sides are in a stress state to consume earthquake energy, and the beam end curved plates 10 press the support 11 to consume energy under stress; after the middle and small earthquake is finished, the beam end curved plate 10 can be reset by self, the energy consumption plate 13 is used as a main energy consumption device to check whether replacement is needed, and after the large earthquake is finished, the node is subjected to irreversible large deformation, and the whole node can be replaced. On the column foot node, the steel section extended by the steel tube type steel recycled concrete column 2 swings in the gap of the embedded steel, the column bottom curved plate 5 and the energy consumption supporting plate 3 deform, the column bottom curved plate 5 and the energy consumption supporting plate deform, the column bottom curved plate and the energy consumption supporting plate deform plastically to consume energy, the disc spring 6 increases the self-recovery capacity of the column foot node, and the frame has the swinging self-recovery capacity by utilizing the elastic plastic capacity of the column bottom curved plate 5 and the disc spring 6. Most of the earthquake energy is consumed by the energy consumption plate, the plastic hinge is firstly arranged at the weakening position of the energy consumption plate, the deformation of the node is transferred and concentrated on the energy consumption plate, the energy consumption effect is realized, and the excessive mutual displacement of the deformation of the middle component of the node is avoided.
Claims (10)
1. The swinging self-resetting steel tube type steel recycled concrete frame with the replaceable energy consumption elements comprises a concrete base (8), a steel tube type steel recycled concrete column (2) and a steel beam (1), and is characterized in that the concrete base (8) is connected with the bottom of the steel tube type steel recycled concrete column (2) through a column bottom curved surface (5), the outer wall of the steel tube type steel recycled concrete column (2) is connected with the concrete base (8) through an energy consumption supporting plate (3), and the side wall of the steel tube type steel recycled concrete column (2) is connected with the steel beam (1) through a beam column energy consumption self-resetting structure.
2. The swinging self-resetting steel tube type steel recycled concrete frame with the replaceable energy consumption element according to claim 1, wherein the steel tube type steel recycled concrete column (2) comprises cross steel and square steel tubes, the cross steel is arranged in the square steel tubes, the bottoms of the cross steel are longer than the square steel tubes, recycled concrete is poured in the square steel tubes, the parts of the cross steel, which are positioned outside the square steel tubes, are arranged at the bottoms, the cross steel is connected with one end of a column bottom curved surface (5) through bolts, the other end of the column bottom curved surface (5) is connected with a concrete base (8), the outer wall of the bottom of the square steel tube is connected with one edge of an energy consumption supporting plate (3), and the other opposite edge of the energy consumption supporting plate (3) is connected with the concrete base (8).
3. The swinging self-resetting steel tube profile steel recycled concrete frame with replaceable energy consumption elements according to claim 2, wherein four embedded steel products (7) are embedded upwards in the concrete base (8), the width of each embedded steel product (7) is smaller than the length of a cross-shaped steel arm, and the four embedded steel products (7) are in contact with the cross-shaped steel in different sections.
4. The swinging self-resetting steel tube type steel recycled concrete frame with the replaceable energy dissipation elements according to claim 2, wherein the outer wall of the bottom of the square steel tube is connected with one edge of the energy dissipation supporting plate (3) through a gasket (4).
5. The swinging self-resetting steel tube type steel recycled concrete frame with the replaceable energy consumption element according to claim 1, wherein the column bottom curved surface (5) is connected with the concrete base (8) through a plurality of bolts, and the bolts are positioned above the column bottom curved surface (5) and are respectively sleeved with a disc spring (6).
6. The swinging self-resetting steel tube type steel recycled concrete frame with the replaceable energy consumption element according to claim 1, wherein the beam column energy consumption self-resetting structure comprises two brackets (11), grooves are formed in each bracket (11), the bottoms of the grooves of the two brackets (11) are respectively connected to the relative positions of the steel tube type steel recycled concrete column (2) and the steel beam (1), beam end curved plates (10) are placed in the grooves of each bracket (11), the positions, close to the bottoms, of the brackets (11) are connected with the beam end curved plates (10) in the brackets through supporting cylinders (11), two branch grooves are formed in each beam end curved plate (10), each beam end curved plate (10) has deformation elasticity, the beam end curved plates further comprise X-shaped rotating shafts (9), and four ends of each X-shaped rotating shaft (9) are respectively extended into the branch grooves of the two beam end curved plates (10), and each X-shaped rotating shaft (9) and each two brackets (11) are connected with one rotating shaft.
7. The rocking self-resetting steel tube section steel recycled concrete frame with replaceable energy consuming elements according to claim 6, wherein the beam end curved plate (10) is externally tied with SMA strands (14).
8. The swinging self-resetting steel tube type steel recycled concrete frame with the replaceable energy consumption element according to claim 6, wherein the depth of the inner supporting groove of the beam end curved plate (10) is smaller than the arm length of the X-shaped rotating shaft (9).
9. The rocking self-resetting steel tube section steel recycled concrete frame with replaceable energy consuming elements according to claim 1, wherein a plurality of ribs are welded to the outer wall of the beam end curved panel (10).
10. The swinging self-resetting steel tube type recycled concrete frame with the replaceable energy dissipation elements according to claim 1, wherein the steel tube type recycled concrete column (2) is connected with the outer wall of the steel beam (1) through energy dissipation plates (13), and a plurality of holes are formed in the energy dissipation plates (13).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116905655A (en) * | 2023-09-11 | 2023-10-20 | 北京建筑大学 | Sleeve type flange connection modularized steel structure system and building thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116905655A (en) * | 2023-09-11 | 2023-10-20 | 北京建筑大学 | Sleeve type flange connection modularized steel structure system and building thereof |
| CN116905655B (en) * | 2023-09-11 | 2024-01-19 | 北京建筑大学 | Sleeve type flange connection modularized steel structure system and building thereof |
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