CN111173155B - Shearing-bending parallel connection type graded energy dissipation damper - Google Patents

Shearing-bending parallel connection type graded energy dissipation damper Download PDF

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Publication number
CN111173155B
CN111173155B CN202010014364.0A CN202010014364A CN111173155B CN 111173155 B CN111173155 B CN 111173155B CN 202010014364 A CN202010014364 A CN 202010014364A CN 111173155 B CN111173155 B CN 111173155B
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damper
steel plate
yield
bending
shear
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CN202010014364.0A
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CN111173155A (en
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陈云
陈铭
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Hainan University
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Hainan University
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings

Abstract

The invention discloses a shearing-bending parallel connection type grading energy dissipation damper, which comprises: the steel plate bending and bending damper comprises a groove-shaped steel plate base, a steel plate, a bending and bending damper and a shearing and bending damper; one end of the groove-shaped steel plate base is open; the steel plate extends into the groove-shaped steel plate base from the opening end of the groove-shaped steel plate base; the bottom of the steel plate is provided with a long strip-shaped hole; the top of the frame is provided with a flange plate used for being connected with the frame structure; the shearing yield damper penetrates through the elongated hole, and two ends of the shearing yield damper are connected with the inner side wall of the groove-shaped steel plate base; the bending yield dampers are arranged on two sides of the steel plate side by side, and the other ends of the bending yield dampers are connected with the inner side wall of the groove-shaped base and positioned above the shearing yield dampers. When the small earthquake or the medium earthquake occurs, the bending yield damper preferentially yields and consumes energy; when the earthquake magnitude is too large, the bending yield damper and the shearing yield damper yield and consume energy together, and graded yield and energy consumption is realized.

Description

Shearing-bending parallel connection type graded energy dissipation damper
Technical Field
The invention belongs to the field of energy dissipation and shock absorption of building structures, and particularly relates to a shearing-bending parallel connection type graded energy dissipation damper.
Background
In recent years, a large number of earthquakes and small numbers of earthquakes occur at home and abroad, so that great casualties and property loss are caused, and earthquake disasters become one of the most serious natural disasters faced by human beings. The traditional earthquake resistance mainly depends on the deformation and energy consumption of the building to resist earthquake acting force, and the earthquake resistance method can bring irreparable damage to the building. For decades, through the continuous research of scholars at home and abroad, a technology of adding a damper into a building and absorbing energy input under the action of earthquake by using energy dissipation elements of the damper, thereby protecting main bearing components of the building, namely a passive energy dissipation and shock absorption technology, is proposed. The energy dissipation and shock absorption technology is an earthquake-proof technology widely used in various countries in the world at present and is widely applied at home and abroad. Various types of dampers have been developed, such as friction dampers, viscous fluid dampers, magnetorheological dampers, etc., among which metal dampers are most widely used in the field of damping of engineering structures because of their low manufacturing cost, robustness, and convenience in construction.
The metal damper dissipates the energy of the earthquake input structure by utilizing the plastic hysteresis deformation generated when the metal material yields, and can effectively reduce the vibration reaction of the structure. However, most of the existing metal dampers are medium-earthquake yielding energy dissipation, so that the yield bearing capacity of the damper is limited during a large earthquake, and the damper cannot play a larger energy dissipation role during the large earthquake. And the other part of the metal damper generates yielding energy consumption when suffering a major earthquake, and is generally in an elastic stage during a middle earthquake, and does not consume energy, so that the metal damper cannot play a role in dissipating earthquake energy during the middle earthquake. In addition, more metal dampers are in an elastic state during small earthquakes and cannot play a role in energy consumption. It can be seen that existing metal dampers exhibit limitations when faced with different seismic levels.
Therefore, it is an urgent need to solve the problem of developing a damper capable of yielding and dissipating energy in different vibration levels.
Disclosure of Invention
In view of the above, the invention provides a shearing-bending parallel type graded energy dissipation damper which can yield in a graded manner under different fortification levels and has a good damping effect.
A shear-bend parallel type stepped energy dissipation damper comprising: the steel plate bending and bending damper comprises a groove-shaped steel plate base, a steel plate, a bending and bending damper and a shearing and bending damper;
one end of the groove-shaped steel plate base is open;
the steel plate extends into the groove-shaped steel plate base from the opening end of the groove-shaped steel plate base; the bottom of the steel plate is provided with a long strip-shaped hole; the top of the frame is provided with a flange plate used for being connected with the frame structure;
the shearing yield damper penetrates through the strip-shaped hole, and two ends of the shearing yield damper are connected with the inner side wall of the groove-shaped steel plate base;
the bending yield damper is provided with a plurality of bending yield dampers which are arranged on two sides of the steel plate side by side, and the other end of each bending yield damper is connected with the inner side wall of the groove-shaped steel plate base and is positioned above the shearing yield damper.
The damper has the advantages that the bending yield damper preferentially yields and consumes energy in small or medium earthquakes, and when the earthquake magnitude is too large, the bending yield damper and the shearing yield damper yield and consume energy together, so that earthquake energy with different strengths can be dissipated to the maximum extent, and the vibration reaction of the structure is remarkably reduced.
Preferably, the bottom of the groove-shaped steel plate base is provided with a plurality of flange plates, and the bottom of each flange plate is connected with a bottom plate. The arrangement of the flange plate and the bottom plate can enhance the rigidity of the whole damper.
Preferably, the top of the steel plate is provided with a first flange plate for connecting with the frame structure.
Preferably, the shear yield damper is arranged inside the elongated hole, and a distance is reserved between the shear yield damper and the side wall of the elongated hole. Under normal conditions, the steel plate is not in contact with the shear yield damper, when the steel plate is in large displacement during heavy earthquake, the steel plate is in contact with the shear yield damper, and the bending yield damper and the shear yield damper are jointly subjected to yield energy consumption, so that the deformation of the whole frame can be effectively hindered.
Preferably, the bending yield damper is made of low yield point steel, Q235 steel or a shape memory metal plate, and the bending yield damper and the shearing yield damper are made of the same material or different materials and have different yield displacements respectively.
Preferably, the surface of the shear yield damper is provided with a plurality of convex parts and concave parts, and the convex parts and the concave parts are arranged in a crossed manner. When the magnitude of the earthquake is too large, the convex part is in an elastic state and is in contact with the steel plate, the displacement of the steel plate is reduced, and the concave part is in a yield state to dissipate the energy of the earthquake input structure.
Preferably, the shearing-bending parallel type graded energy dissipation damper is arranged on a horizontal cross beam, a herringbone cross support is arranged at the bottom of the horizontal cross beam, and the bottom of the herringbone cross support is connected with the bottom of the frame structure.
Preferably, the side wall of the groove-shaped steel plate base is connected with the horizontal cross beam through a high-strength bolt, the outer side of the bottom plate is connected with a support plate, and the bottom of the support plate is connected with the horizontal cross beam; the shear-bending parallel connection type graded energy dissipation damper is connected with the frame structure better, and graded energy dissipation of earthquake is realized.
Preferably, two ends of the shearing-bending parallel type graded energy dissipation damper are respectively connected to two opposite corners of the frame structure through hinged supports.
Preferably, a first rigid support is connected between the first flange plate and the hinged support above, and a second rigid support is connected between the bottom plate and the hinged support below.
According to the technical scheme, compared with the prior art, the invention discloses and provides a shearing-bending parallel connection type graded energy dissipation damper, which has the beneficial effects that:
1. the invention yields in stages under different fortification levels, can dissipate the seismic energy of different strengths to the utmost extent, obviously lighten the vibration reaction of the structure;
2. the shear-bending parallel connection type graded energy dissipation damper is strong in deformability, namely the bending yield damper is preferentially yielded in small or middle earthquakes, when the earthquake magnitude is overlarge, the convex part of the shear yield damper is in an elastic state and is in contact with a steel plate and reduces the displacement of the steel plate, and the concave part is in a yield state and dissipates the energy of an earthquake input structure;
3. the invention has the advantages of clear anti-seismic mechanism, low manufacturing cost, easy processing, convenient construction, obvious energy consumption effect and easy disassembly and replacement after earthquake;
4. the shearing-bending parallel type grading energy dissipation damper can be conveniently arranged between layers of a frame structure, and can improve the integral rigidity of the structure in a normal use state; when earthquakes occur, the effect of graded yield energy consumption can be exerted aiming at earthquakes with different strengths, the vibration reaction of the structure is effectively reduced, and the method has wide engineering application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed 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 to obtain other drawings without inventive exercise.
Figure 1 is a front view of a shear-bend parallel type stepped energy dissipation damper provided by the present invention;
FIG. 2 is a schematic top view of a first example of a flexion damper of the present invention;
FIG. 3 is a schematic top view of a second example of a flexion damper of the present invention;
FIG. 4 is a schematic top view of a third exemplary buckling compliant damper of the present invention;
FIG. 5 is a schematic structural view of a shear yield damper according to the present invention;
figure 6 is a schematic structural diagram of the installation of the shearing-bending parallel type graded energy-dissipating damper in the first embodiment of the invention;
fig. 7 is a schematic structural view of the installation of the shearing-bending parallel type stepped energy-dissipating damper in the second embodiment of the invention.
Wherein, in the figure,
1-a groove-shaped steel plate base;
2-a steel plate;
21-strip-shaped holes;
3-a first flange plate; 4-high strength bolts; 5-bending yield damper;
6-shear yield damper;
61-a boss; 62-a recess;
7-a flange plate; 8-a bottom plate; 9-embedded parts; 10-horizontal beam; 11-a support plate; 12-a first rigid support; 13-a hinged support; 14-a frame structure; 15-herringbone cross bracing; 16-a second rigid support; 17-a second flange; 18-third flange.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.
Example 1:
the embodiment of the invention discloses a shearing-bending parallel connection type grading energy dissipation damper, which comprises: the steel plate bending and bending vibration damping device comprises a groove-shaped steel plate base 1, a steel plate 2, a bending and bending vibration damper 5 and a shearing and bending vibration damper 6;
one end of the groove-shaped steel plate base 1 is open;
the steel plate 2 extends into the groove-shaped steel plate base 1 from the opening end of the groove-shaped steel plate base 1; the bottom of the steel plate 2 is provided with a strip-shaped hole 21;
the shearing yield damper 6 penetrates through the strip-shaped hole 21, and two ends of the shearing yield damper are connected with the inner side wall of the groove-shaped steel plate base 1;
the bending yield dampers 5 are arranged on two sides of the steel plate 2 side by side, and the other ends of the bending yield dampers 5 are connected with the inner side wall of the groove-shaped steel plate base 1 and positioned above the shearing yield dampers 6.
In order to further optimize the above technical solution, the bending yield dampers 5 on both sides of the steel plate 2 are symmetrically distributed, as shown in fig. 2-4, the bending yield dampers 5 may be in various shapes such as a rectangle, a rectangular inner portion with a prismatic hole, an X-shape, and the like.
In order to further optimize the technical scheme, a plurality of flange plates 7 are arranged at the bottom of the groove-shaped steel plate base 1, and a bottom plate 8 is connected to the bottoms of the flange plates 7.
In order to further optimize the solution described above, the top of the steel plate 2 is provided with a first flange 3 for connection to the frame structure 14.
In order to further optimize the above technical solution, the shear yield damper 6 is disposed inside the elongated hole 21 and spaced apart from the sidewall of the elongated hole 21.
In order to further optimize the above technical solution, the bending yield damper 5 is made of low yield point steel or Q235 steel or shape memory metal plate, and the bending yield damper 5 and the shearing yield damper 6 are made of the same material or different materials and have different yield displacements respectively.
In order to further optimize the above technical solution, the surface of the shear yield damper 6 is provided with a plurality of protrusions 61 and recesses 62, and the protrusions 61 and the recesses 62 are arranged in a crossing manner. As shown in fig. 2, the longitudinal section of the shear yield damper 6 is concave-convex, when the magnitude of the earthquake is too large, the convex part 61 is stressed and in an elastic state, and the concave part 62 is in a yield state to dissipate the energy of the earthquake input structure.
In order to further optimize the technical scheme, the shearing-bending parallel connection type graded energy dissipation damper is arranged on the horizontal cross beam 10, the bottom of the horizontal cross beam 10 is provided with a herringbone cross support 15, and the bottom of the herringbone cross support 15 is connected with the bottom of the frame structure 14.
In order to further optimize the technical scheme, the side wall of the groove-shaped steel plate base 1 is connected with a horizontal cross beam 10 through a high-strength bolt 4, the outer side of a bottom plate 8 is connected with a support plate 11, and the bottom of the support plate 11 is connected with the horizontal cross beam 10; the top of the frame structure 14 is provided with an embedded part 9, and the embedded part 9 is connected with the first flange plate 3 through a high-strength bolt 4. During a small earthquake or a medium earthquake, the upper part of the frame structure 14 generates horizontal displacement, the steel plate 2 connected with the upper part of the frame structure 14 also generates horizontal displacement, and the bending yield damper 5 generates yield energy consumption at the moment, so that the integral deformation of the frame structure 14 is hindered. When a large earthquake comes, the upper part of the frame structure 14 generates larger displacement in the horizontal direction, the steel plate 2 connected with the upper part of the frame structure 14 also generates larger horizontal movement and is in contact with the shearing yield damper 6, and at the moment, the bending yield damper 5 and the shearing yield damper 6 jointly yield and consume energy, so that the integral deformation of the frame structure 14 is more effectively hindered, and the aim of graded yield and energy consumption in different earthquake grades is fulfilled.
Example 2:
the shearing-bending parallel type graded energy dissipation dampers are obliquely arranged inside the frame structure 14, wherein both ends of the shearing-bending parallel type graded energy dissipation dampers are connected to two opposite corners of the frame structure 14 through rigid supports 12 and hinged supports 13, respectively.
In order to further optimize the above technical solution, a first rigid support 12 is connected between the first flange 3 and the upper hinge support 13, and a second rigid support 16 is connected between the bottom plate 8 and the lower hinge support 13. A second flange plate 17 is arranged at the connecting part of the first rigid support 12 and the first flange plate 3, and the second flange plate 17 is the same as the first flange plate 3 in size and is connected with the first flange plate 3 through a high-strength bolt 4; and a third flange plate 18 is arranged at the joint of the second rigid support 16 and the bottom plate 8, and the third flange plate 18 and the bottom plate have the same size and are connected through high-strength bolts.
Other technical schemes and the principle of graded yield energy consumption in the embodiment are the same as those in embodiment 1, and are not described in detail here.
The embodiments described above are intended to enable those skilled in the art to understand and apply the invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (8)

1. A shear-bending parallel type stepped energy dissipation damper, comprising: the bending and shearing combined type steel plate comprises a groove type steel plate base (1), a steel plate (2), a bending and yielding type damper (5) and a shearing and yielding type damper (6);
one end of the groove-shaped steel plate base (1) is open;
the steel plate (2) extends into the groove-shaped steel plate base (1) from the opening end of the groove-shaped steel plate base (1); the bottom of the steel plate (2) is provided with a strip-shaped hole (21);
the shear yield damper (6) penetrates through the elongated hole (21), and two ends of the shear yield damper are connected with the inner side wall of the groove-shaped steel plate base (1);
the bending yield dampers (5) are arranged on two sides of the steel plate (2) side by side, and the other ends of the bending yield dampers (5) are connected with the inner side wall of the groove-shaped steel plate base (1) and positioned above the shearing yield dampers (6);
the shearing yield damper (6) is arranged inside the elongated hole (21) and is spaced from the side wall of the elongated hole (21); the surface of the shear yield damper (6) is provided with a plurality of convex parts (61) and concave parts (62), and the convex parts (61) and the concave parts (62) are arranged in a crossed mode.
2. A shear-bend parallel type stepped energy dissipation damper as claimed in claim 1, wherein the bottom of the channel type steel plate base (1) is provided with a plurality of flange plates (7), and the bottom of the flange plates (7) is connected with a bottom plate (8).
3. A shear-bend parallel stepped energy dissipation damper as claimed in claim 2, wherein the top of the steel plate (2) is provided with a first flange (3) for connection to a frame structure (14).
4. A shear-bend parallel type stepped energy dissipation damper as claimed in any one of claims 1-3, wherein the buckling damper (5) is made of low yield point steel or Q235 steel or shape memory metal plate, and the buckling damper (5) and the shear damper (6) are made of the same material or different materials and have different yield displacements respectively.
5. A shear-bending parallel type stepped energy dissipation damper as claimed in claim 3, wherein the shear-bending parallel type stepped energy dissipation damper is provided on a horizontal beam (10), the bottom of the horizontal beam (10) is provided with herringbone cross supports (15), and the bottom of the herringbone cross supports (15) is connected with the bottom of the frame structure (14).
6. A shear-bending parallel type stepped energy dissipation damper as claimed in claim 5, wherein the side walls of the channel type steel plate base (1) are connected with the horizontal beams (10) through high-strength bolts (4), the outer side of the bottom plate (8) is connected with a support plate (11), and the bottom of the support plate (11) is connected with the horizontal beams (10); the top of the frame structure (14) is provided with an embedded part (9), and the embedded part (9) is connected with the first flange plate (3) through the high-strength bolt (4).
7. A shear-bend parallel type stepped energy dissipation damper as claimed in claim 3, wherein both ends of the shear-bend parallel type stepped energy dissipation damper are connected to two opposite corners of the frame structure (14) through hinged supports (13), respectively.
8. A shear-bend parallel type stepped energy dissipation damper as claimed in claim 7, wherein a first rigid support (12) is connected between the first flange (3) and the upper hinge support (13), and a second rigid support (16) is connected between the base plate (8) and the lower hinge support (13).
CN202010014364.0A 2020-01-07 2020-01-07 Shearing-bending parallel connection type graded energy dissipation damper Active CN111173155B (en)

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CN111173155B true CN111173155B (en) 2021-03-30

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Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013010917A1 (en) * 2011-07-15 2013-01-24 Damptech A/S Passive damper
CN103696502A (en) * 2013-12-09 2014-04-02 南京工业大学 Shearing and bending combined type grading yield soft steel damper
CN203613671U (en) * 2013-12-09 2014-05-28 南京工业大学 Shearing and bending combined type staging yielding mild steel damper
CN203846635U (en) * 2014-05-13 2014-09-24 同济大学 Two-stage mixed energy dissipation and shock absorption device
CN204185959U (en) * 2014-10-27 2015-03-04 同济大学 Tension and compression, shearing and bending combined mild steel damper
CN204491885U (en) * 2015-03-02 2015-07-22 海南大学 Super-elasticity Self-resetting energy-dissipating device
KR101689463B1 (en) * 2015-04-07 2016-12-26 한국기술교육대학교 산학협력단 Multi Joint Vibration Control Device
CN206298990U (en) * 2016-12-19 2017-07-04 西安建筑科技大学 A kind of compound shear wall that curved mild steel damper is cut with easily replacing
CN108952282A (en) * 2017-05-27 2018-12-07 南京理工大学 It is a kind of to surrender damping mild steel damper stage by stage

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