CN108442796B - Replaceable arc-shaped soft steel plate combined energy dissipation damper for beam column joints - Google Patents
Replaceable arc-shaped soft steel plate combined energy dissipation damper for beam column joints Download PDFInfo
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- CN108442796B CN108442796B CN201810488826.5A CN201810488826A CN108442796B CN 108442796 B CN108442796 B CN 108442796B CN 201810488826 A CN201810488826 A CN 201810488826A CN 108442796 B CN108442796 B CN 108442796B
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- end plate
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 49
- 239000010959 steel Substances 0.000 title claims abstract description 49
- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000005265 energy consumption Methods 0.000 claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 3
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012761 high-performance material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- 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
Abstract
The invention provides a replaceable arc-shaped soft steel plate combined energy-consumption damper for beam column joints, which comprises an upper end plate and a lower end plate, wherein an inner arc energy-consumption mechanism and an outer arc energy-consumption mechanism are arranged between the upper end plate and the lower end plate; in the outer arc energy dissipation mechanism, a plurality of outer arc plates are fixedly connected in series through deformation bolts penetrating through the arc grooves. The energy dissipation plate and the deformation bolt bear energy dissipation together, and are bent and deformed under the action of an earthquake, so that plastic deformation at beam column joints is reduced, and good ductility of the frame beam column after the earthquake is ensured, so that the effect of dissipating earthquake energy is achieved.
Description
Technical Field
The invention belongs to the field of earthquake resistance and vibration reduction in civil engineering, relates to an energy-consuming damper, and in particular relates to a replaceable arc-shaped soft steel plate combined energy-consuming damper for beam column joints.
Background
Traditional buildings absorb seismic energy mainly by deformation of the structure, and many main components are difficult to repair after damage. With the continuous progress of earthquake-resistant theory, technology and method and the development and application of more high-performance materials, the requirements of people on the earthquake-resistant performance of the structure are higher and higher, and the earthquake resistance of the structure is gradually changed from collapse-resistant design to recoverable functional design so as to minimize the loss of the whole society after earthquake.
Among the methods for realizing the recoverable functional structure, the replaceable structure is the most operable at present, and the replaceable structural member is arranged in the structure, so that the damage of the structure is mainly concentrated on the replaceable member in strong earthquake, the energy of the earthquake input structure can be effectively dissipated, the damaged replaceable member can be quickly replaced after the earthquake, and the normal use function of the structure can be recovered as soon as possible.
Beam column joints are important components in a steel structure system and are one of key problems in steel structure design. The beam column joints are stressed in a complex manner, and the function of the beam column joints is to transfer shearing force and bending moment between the beam columns, so that the performance of the beam column joints has a great influence on the bearing capacity, the deformability and the stability of the structure. From past experience, serious damage occurs to the beam column joints of the steel frame after earthquake, and brittle fracture occurs to a large extent, so that the brittle fracture of the beam column joints of the steel frame under the action of earthquake is reduced, and the frame beam column can still keep good ductility after earthquake so as to achieve the effect of dissipating earthquake energy.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the replaceable arc-shaped soft steel plate combined energy consumption damper for the beam column node, which solves the technical problems that the damper for the beam column node in the prior art is poor in energy consumption capability and has insignificant vibration absorption and isolation effects.
In order to solve the technical problems, the invention adopts the following technical scheme:
the combined energy-consuming damper comprises an upper end plate and a lower end plate, wherein an inner arc energy-consuming mechanism and an outer arc energy-consuming mechanism are arranged between the upper end plate and the lower end plate, and the inner arc energy-consuming mechanism is positioned at the inner side of the outer arc energy-consuming mechanism;
the inner arc energy dissipation mechanism comprises an upper arc plate with one end detachably arranged on the upper end plate and a lower arc plate with one end detachably arranged on the lower end plate, the other end of the upper arc plate is not contacted with the lower end plate, and the other end of the lower arc plate is not contacted with the upper end plate; the upper arc plate and the lower arc plate are arranged in parallel, the projection of the upper arc plate on the lower arc plate is partially overlapped with the lower arc plate, and a gap is reserved between the upper arc plate and the lower arc plate; the upper arc plate and the lower arc plate are fixedly connected through a plurality of groups of energy dissipation plates vertically penetrating through the upper arc plate and the lower arc plate, and the parts, extending out of the outer side of the upper arc plate and the outer side of the lower arc plate, of each group of energy dissipation plates are connected together through connecting sheets;
the outer arc energy dissipation mechanism comprises a plurality of outer arc plates, arc grooves penetrating through two sides of the outer arc plates are formed in the outer arc plates, the outer arc plates are fixedly connected in series through the arc grooves by deformation bolts, the end parts of the outer arc plates close to the upper end plate are detachably mounted on the upper end plate, and the end parts of the outer arc plates close to the lower end plate are detachably mounted on the lower end plate.
The invention also has the following distinguishing technical characteristics:
the energy consumption plate is made of a metal lead plate, and the screw rod of the deformation bolt is made of a shape memory alloy.
The length of the arc-shaped groove is larger than the outer diameter of the screw rod of the deformation bolt, and the contact surface of the arc-shaped groove and the nut of the deformation bolt is processed into a friction surface.
And the upper arc plate and the lower arc plate are respectively provided with an energy consumption plate mounting hole for mounting the energy consumption plate.
One end of the upper arc plate is vertically arranged on the upper end plate through angle steel and bolts, and one end of the lower arc plate is vertically arranged on the lower end plate through angle steel and bolts; the end part of the outer arc plate close to the upper end plate is vertically arranged on the upper end plate through angle steel and bolts, and the end part of the outer arc plate close to the lower end plate is vertically arranged on the lower end plate through angle steel and bolts.
The angle steel adopts common angle steel with yield strength of 235 MPa; the upper end plate and the lower end plate are made of steel plates, the upper arc plate and the lower arc plate are made of steel plates, the connecting sheet is made of steel plates, the outer arc plate is made of steel plates, and the steel plates are common steel plates with yield strength of 235 MPa.
The radians of the upper arc plate and the lower arc plate are equal, the radians of the outer arc plates are equal, and the radian of the upper arc plate is larger than the radian of the outer arc plate.
The included angle between the upper end plate and the lower end plate is 90 degrees, the radians of the upper arc plate and the lower arc plate are 55 degrees, and the radian of the outer arc plate is 26 degrees.
The energy consumption plates are two groups of three.
The number of the outer arc plates is five.
The upper end plate and the lower end plate are respectively provided with a bolt hole.
Compared with the prior art, the invention has the following technical effects:
the energy dissipation plate and the deformation bolt bear energy dissipation together, and are bent and deformed under the action of an earthquake, so that plastic deformation at beam column joints is reduced, and good ductility of the frame beam column after the earthquake is ensured, so that the effect of dissipating earthquake energy is achieved.
And (II) the sliding friction between the outer arc plate and the deformation bolt achieves the energy consumption effect, so that the energy consumption capacity of the mild steel damper is further enhanced.
And (III) the components of the invention are all connected by bolts, and can be disassembled after the earthquake is broken, so that the broken components are removed, and the components which can be continuously used are reserved.
According to the invention, the plastic deformation of the frame structure is reduced by utilizing the energy consumption capability of the damper, so that the damper has a better shock absorption and isolation effect, and the service capability of the frame structure is quickly restored by replacing the damper after the damper is vibrated.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an assembled side view schematic of an inner arc energy dissipation mechanism.
Fig. 3 is an assembled side view schematic of an outer arc energy dissipation mechanism.
Fig. 4 is a schematic view of the use state of the present invention.
The meaning of each reference numeral in the figures is: the device comprises a 1-upper end plate, a 2-lower end plate, a 3-inner arc energy dissipation mechanism, a 4-outer arc energy dissipation mechanism, 5-angle steel, 6-bolts, 7-bolt holes, 8-frame beams and 9-frame columns; 31-upper arc plates, 32-lower arc plates, 33-gaps, 34-energy consumption plates, 35-connecting sheets and 36-energy consumption plate mounting holes; 41-outer arc plate, 42-arc groove, 43-deformation bolt.
The following examples illustrate the invention in further detail.
Detailed Description
The following specific embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solutions of the present application fall within the protection scope of the present invention.
Example 1:
according to the technical scheme, as shown in fig. 1 to 4, the embodiment provides a replaceable arc-shaped soft steel plate combined energy dissipation damper for beam column joints, which comprises an upper end plate 1 and a lower end plate 2, wherein an inner arc energy dissipation mechanism 3 and an outer arc energy dissipation mechanism 4 are arranged between the upper end plate 1 and the lower end plate 2, and the inner arc energy dissipation mechanism 3 is positioned at the inner side of the outer arc energy dissipation mechanism 4;
specifically, the inner arc energy dissipation mechanism 3 comprises an upper arc plate 31 with one end detachably mounted on the upper end plate 1 and a lower arc plate 32 with one end detachably mounted on the lower end plate 2, the other end of the upper arc plate 31 is not contacted with the lower end plate 2, and the other end of the lower arc plate 32 is not contacted with the upper end plate 1; the upper arc plate 31 and the lower arc plate 32 are arranged in parallel, and the projection of the upper arc plate 31 on the lower arc plate 32 is partially overlapped with the lower arc plate 32, and a gap 33 is arranged between the upper arc plate 31 and the lower arc plate 32; the upper arc plate 31 and the lower arc plate 32 are fixedly connected through a plurality of groups of energy dissipation plates 34 vertically penetrating through the upper arc plate 31 and the lower arc plate 32, and the parts, extending out of the upper arc plate 31, of each group of energy dissipation plates 34 are connected together through connecting sheets 35;
specifically, the outer arc energy dissipation mechanism 4 includes a plurality of outer arc plates 41, arc grooves 42 penetrating through two sides of the outer arc plates 41 are machined on the outer arc plates 41, the plurality of outer arc plates 41 are serially fixed together through the arc grooves 42 by deformation bolts 43, the end part of the outer arc plate 41 close to the upper end plate 1 is detachably mounted on the upper end plate 1, and the end part of the outer arc plate 41 close to the lower end plate 2 is detachably mounted on the lower end plate 2.
As a preferred embodiment of the present embodiment, the energy dissipation plate 34 is made of a metal lead plate, and the screw of the deformation bolt 43 is made of a shape memory alloy. So that the energy consuming plate 34 and the deformation bolts 43 are the locations where the deformations are sent.
Specifically, the upper arc plate 31 and the lower arc plate 32 are each formed with an energy consumption plate mounting hole 36 for mounting the energy consumption plate 34.
As a preferable scheme of the embodiment, one end of the upper arc plate 31 is vertically installed on the upper end plate 1 through the angle steel 5 and the bolt 6, and one end of the lower arc plate 32 is vertically installed on the lower end plate 2 through the angle steel 5 and the bolt 6; the end of the outer arc plate 41 near the upper end plate 1 is vertically installed on the upper end plate 1 through the angle steel 5 and the bolt 6, and the end of the outer arc plate 41 near the lower end plate 2 is vertically installed on the lower end plate 2 through the angle steel 5 and the bolt 6. The damper is fixedly installed and replaced. After an earthquake occurs, the main energy consumption part of the earthquake energy-saving device generates plastic deformation and consumes energy at first, so that the structure is not damaged, and the earthquake can be removed and replaced.
As a preferable scheme of the embodiment, the angle steel 5 adopts common angle steel with the yield strength of 235 MPa; the upper end plate 1 and the lower end plate 2 are made of steel plates, the upper arc plate 31 and the lower arc plate 32 are made of steel plates, the connecting sheet 35 is made of steel plates, the outer arc plate 41 is made of steel plates, and the steel plates are made of common steel plates with the yield strength of 235 MPa.
As a preferable aspect of the present embodiment, the length of the arc-shaped groove 42 is longer than the outer diameter of the screw of the deformation bolt 43, and the contact surface of the arc-shaped groove 42 and the nut of the deformation bolt 43 is treated as a friction surface. The deformation bolt 43 provides friction resistance when sliding in the arc-shaped groove 42, and the sliding friction achieves the energy dissipation effect, so that the energy dissipation capacity of the soft steel damper is further enhanced.
As a preferred solution of this embodiment, the radians of the upper arc plate 31 and the lower arc plate 32 are equal, and the radians of the outer arc plates 41 are equal, and the radian of the upper arc plate 31 is greater than the radian of the outer arc plates 41. Specifically, the included angle between the upper end plate 1 and the lower end plate 2 is 90 °, the radians of the upper arc plate 31 and the lower arc plate 32 are 55 °, and the radians of the outer arc plate 41 are 26 °.
As a preferred embodiment, the energy consuming plates 34 are two sets of three. The number of outer arc plates 41 is five.
As a preferred solution of this embodiment, bolt holes 7 are provided in both the upper end plate 1 and the lower end plate 2, facilitating assembly with frame beams 8 and frame columns 9 by bolts. The size and the number of the bolt holes 7 can be adjusted according to actual conditions.
Claims (1)
1. The replaceable arc-shaped soft steel plate combined energy consumption damper for the beam column joint comprises an upper end plate (1) and a lower end plate (2), and is characterized in that an included angle between the upper end plate (1) and the lower end plate (2) is 90 degrees; an inner arc energy dissipation mechanism (3) and an outer arc energy dissipation mechanism (4) are arranged between the upper end plate (1) and the lower end plate (2), and the inner arc energy dissipation mechanism (3) is positioned at the inner side of the outer arc energy dissipation mechanism (4);
the inner arc energy dissipation mechanism (3) comprises an upper arc plate (31) with one end vertically and detachably arranged on the upper end plate (1) through angle steel (5) and bolts (6) and a lower arc plate (32) with one end vertically and detachably arranged on the lower end plate (2) through the angle steel (5) and the bolts (6), the other end of the upper arc plate (31) is not contacted with the lower end plate (2), and the other end of the lower arc plate (32) is not contacted with the upper end plate (1); the radians of the upper arc plate (31) and the lower arc plate (32) are equal, and the radians are 55 degrees; the upper arc plate (31) and the lower arc plate (32) are arranged in parallel, the projection of the upper arc plate (31) on the lower arc plate (32) is partially overlapped with the lower arc plate (32), and a gap (33) is formed between the upper arc plate (31) and the lower arc plate (32); the upper arc plate (31) and the lower arc plate (32) are fixedly connected through energy dissipation plates (34) vertically penetrating through the upper arc plate (31) and the lower arc plate (32), and the number of the energy dissipation plates (34) is two, and each group is three; the energy consumption plate (34) is made of a metal lead plate; the parts of each group of energy dissipation plates (34) extending out of the upper arc plate (31) and the lower arc plate (32) are connected together through connecting sheets (35); energy consumption plate mounting holes (36) for mounting the energy consumption plates (34) are formed in the upper arc plate (31) and the lower arc plate (32);
the outer arc energy dissipation mechanism (4) comprises five outer arc plates (41), the radians of the outer arc plates (41) are equal, and the radian is 26 degrees; arc grooves (42) penetrating through two sides of the outer arc plates (41) are formed in the outer arc plates (41), and a plurality of outer arc plates (41) are connected in series and fixed together through the arc grooves (42) by deformation bolts (43); the screw rod of the deformation bolt (43) is made of shape memory alloy; the length of the arc-shaped groove (42) is larger than the outer diameter of a screw rod of the deformation bolt (43), and the contact surface of the arc-shaped groove (42) and a nut of the deformation bolt (43) is processed into a friction surface; the end part of the outer arc plate (41) close to the upper end plate (1) is vertically and detachably arranged on the upper end plate (1) through an angle steel (5) and a bolt (6), and the end part of the outer arc plate (41) close to the lower end plate (2) is vertically and detachably arranged on the lower end plate (2) through the angle steel (5) and the bolt (6);
the angle steel (5) is a common angle steel with the yield strength of 235 MPa; the upper end plate (1) and the lower end plate (2) are made of steel plates, the upper arc plate (31) and the lower arc plate (32) are made of steel plates, the connecting piece (35) is made of steel plates, the outer arc plate (41) is made of steel plates, and the steel plates are common steel plates with yield strength of 235 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810488826.5A CN108442796B (en) | 2018-05-21 | 2018-05-21 | Replaceable arc-shaped soft steel plate combined energy dissipation damper for beam column joints |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810488826.5A CN108442796B (en) | 2018-05-21 | 2018-05-21 | Replaceable arc-shaped soft steel plate combined energy dissipation damper for beam column joints |
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| CN108442796A CN108442796A (en) | 2018-08-24 |
| CN108442796B true CN108442796B (en) | 2024-03-26 |
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| CN109629675A (en) * | 2019-01-15 | 2019-04-16 | 江苏中谊抗震工程股份有限公司 | A kind of assembled beam-column lead extrusion pressing type energy dissipation node |
| CN110093993A (en) * | 2019-05-23 | 2019-08-06 | 青岛理工大学 | Assembled Self-resetting variation rigidity energy consumption connection structure and its installation method with sleeve bolt |
| CN112832578B (en) * | 2021-01-08 | 2022-05-24 | 北京工业大学 | Device for improving energy dissipation and self-resetting capability of beam-column joint |
| CN113529945B (en) * | 2021-08-24 | 2022-06-28 | 西安建筑科技大学 | Self-resetting beam column energy dissipation connecting piece and construction method thereof |
| CN114411533B (en) * | 2022-03-09 | 2024-02-06 | 华东交通大学 | Quick-replaceable multistage energy-consumption beam falling prevention device and installation method thereof |
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