CN113338688A - Two-way two-step yielding metal energy dissipater suitable for seismic isolation layer - Google Patents

Two-way two-step yielding metal energy dissipater suitable for seismic isolation layer Download PDF

Info

Publication number
CN113338688A
CN113338688A CN202110769132.0A CN202110769132A CN113338688A CN 113338688 A CN113338688 A CN 113338688A CN 202110769132 A CN202110769132 A CN 202110769132A CN 113338688 A CN113338688 A CN 113338688A
Authority
CN
China
Prior art keywords
energy consumption
yielding
energy
section
yield
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110769132.0A
Other languages
Chinese (zh)
Other versions
CN113338688B (en
Inventor
朱忠义
閤东东
周忠发
赵帆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Institute of Architectural Design Group Co Ltd
Original Assignee
Beijing Institute of Architectural Design Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Institute of Architectural Design Group Co Ltd filed Critical Beijing Institute of Architectural Design Group Co Ltd
Priority to CN202110769132.0A priority Critical patent/CN113338688B/en
Publication of CN113338688A publication Critical patent/CN113338688A/en
Application granted granted Critical
Publication of CN113338688B publication Critical patent/CN113338688B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02Buildings, 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
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention provides a metal energy dissipater suitable for bidirectional double-order yielding of a seismic isolation layer, which comprises: a first yielding energy consumption section and a second yielding energy consumption section; the first yielding energy consumption section is formed by orthogonally arranging four groups of U-shaped energy consumption units and is used for absorbing seismic energy input in two directions; the second yield energy consumption section is formed by orthogonally arranging two groups of shear yield energy consumption steel plates, and end plates are arranged at the upper end and the lower end to provide end part restraint. The invention has the deformability matched with the large seismic displacement of the seismic isolation layer, and can still keep the normal energy dissipation and shock absorption working state under the large displacement of the seismic isolation layer; meanwhile, the energy dissipation device has the characteristic of double-stage yield energy dissipation, the output of the metal energy dissipater can be promoted stage by stage along with the increase of the earthquake action, and the metal energy dissipater is guaranteed to have excellent energy dissipation and shock absorption effects under different earthquake levels.

Description

Two-way two-step yielding metal energy dissipater suitable for seismic isolation layer
Technical Field
The invention relates to the technical field of building shock insulation structures, in particular to a metal energy dissipater suitable for bidirectional double-order yield of a shock insulation layer, which can also be called a crawler-type metal damper with double-order yield points and applicable to the shock insulation layer.
Background
The seismic isolation structure system is a structure system which is provided with a seismic isolation device between the bottom of an upper structure of a building and a foundation surface so as to be separated from a foundation ground fixed in a foundation. The seismic isolation layer of the seismic isolation system adopts devices such as a seismic isolation support and the like, and the horizontal rigidity of the seismic isolation layer is far lower than the lateral stiffness of the upper structure, so that the self-vibration period of the structure is greatly prolonged, the excellent period of seismic oscillation is avoided, the seismic acceleration reaction of the structure is greatly reduced, the deformation is mainly and intensively consumed in the seismic isolation layer, the seismic energy input to the structure is mainly consumed by the seismic isolation layer, the relative deformation of the upper structure is very small, and therefore the aim of isolating the seismic damage of the upper building structure is achieved. Because the deformation of the shock insulation structure is mainly concentrated on the shock insulation layer, and the damper shock absorption device is arranged on the shock insulation layer, the energy consumption and shock absorption efficiency of the damper can be greatly improved. Meanwhile, through hysteretic energy consumption of the shock insulation layer damper during earthquake, the damping of the shock insulation layer can be effectively increased, earthquake input energy is consumed, the displacement of the shock insulation layer can be well inhibited, the acceleration of the upper structure is reduced, and the earthquake reaction of the upper structure is further reduced.
Shock-absorbing devices currently applied to the field of building structures can be broadly classified into velocity-type dampers and displacement-type dampers. The damping force of the speed type damper is in direct proportion to the index of the relative speed of the two ends of the damper, the larger the relative speed is, the larger the damping force is provided for the structure, and meanwhile, the speed type damper has the characteristic of playing the energy dissipation and shock absorption effects in the process of tiny displacement. The energy consumption and shock absorption effects of the displacement type damper are related to the relative displacement of two ends of the damper, and generally speaking, under the condition of a certain damping force, the greater the relative displacement of the damper is, the better the energy consumption effect is.
At present, the damping device applied to the seismic isolation layer is mainly a velocity type damper represented by a viscous damper, and the application of the displacement type damper in the seismic isolation layer is relatively less. The viscous damper arranged on the shock insulation layer can play a role in energy dissipation and shock absorption under a small shock, a high additional damping ratio can be provided for the structural body, but the viscous damper reduces the additional damping ratio of the structure along with the increase of the shock level, namely the energy dissipation effect is gradually reduced. The traditional displacement type damper, such as a buckling restrained brace and the like, has higher rigidity, so that the rigidity of a seismic isolation layer is obviously enhanced when the displacement type damper is arranged on the seismic isolation layer, and the seismic isolation effect of an upper structure is reduced, so that the displacement type damper is not widely used in the seismic isolation structure. For the traditional displacement type damper applied to the shock insulation layer, the rigidity cannot be overlarge, so that the damping force which can be provided by the damper cannot reach larger tonnage, and the energy consumption and shock absorption effects are limited. On the other hand, the displacement of the shock insulation layer is large, so that the limit displacement of the traditional displacement type damper is broken through, and the design difficulty of product parameters is caused when the traditional displacement type damper is adopted in the shock insulation layer.
The conventional metal damper mainly has the following disadvantages:
(1) first, the metal damper is limited by the characteristics of the metal material, that is, the ultimate strain of the metal material is not very large (for example, the yield strain of the material is generally about 0.002 and the ultimate strain of the corresponding material is more in the range of 0.05 to 0.1 in the case of steel materials commonly used in the field of building structures). When the metal type damper is adopted for damping design, the maximum deformation of the two ends of the damper cannot be large, and is usually within the range of 5-10 cm. Under the action of rare earthquakes, the maximum displacement of a seismic isolation layer of a seismic isolation building can reach 500-800 cm generally. Therefore, the traditional metal damper cannot be matched with the large displacement characteristic of a seismic isolation layer of a seismic isolation building, and cannot be applied to the seismic isolation layer with a large deformation position to perform energy dissipation and shock absorption design on a structure.
(2) Furthermore, the yielding energy dissipation section of the conventional metal damper usually has only one section, that is, the conventional metal damper can only exert the energy dissipation function at a certain magnitude. That is to say, when the traditional metal damper is designed to absorb shock, the traditional metal damper can only selectively play the energy dissipation and shock absorption roles under a certain specific earthquake action. For example, if the traditional metal damper begins to yield and consume energy at a small-earthquake stage, the corresponding initial yield stress is small, the energy consumption and shock absorption effects are poor under the action of medium and large earthquakes, and meanwhile, the risk of fracture and failure exists; if the traditional metal damper is chosen to flex and consume energy under a large earthquake, the yield force of the traditional metal damper is designed to be higher so as to ensure that the damper cannot yield under the action of small earthquake and medium earthquake, therefore, the damper only provides additional rigidity for the structure under the action of small earthquake and medium earthquake, the structural rigidity is increased, the earthquake action of the structure during small earthquake and medium earthquake is possibly increased, and the structure is adversely affected.
(3) In addition, when the earthquake action exceeding the designed level is encountered, the metal damper is likely to break under the condition of extremely rare earthquakes as the traditional metal damper. Under the condition that the structure is subjected to the action of an extremely rare earthquake, the main structural member already enters a damage state of plastic damage greatly, and the breakage of the damper occurs suddenly, so that the rigidity of the whole structure is suddenly changed, and the collapse of the building structure is caused. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a metal energy dissipater suitable for bidirectional double-step yielding of a seismic isolation layer, and aims to solve the technical problems in the prior art. The metal energy dissipater has the deformation capacity of matching with the large seismic displacement of the seismic isolation layer, and can still keep the normal energy dissipation and shock absorption working state under the large displacement of the seismic isolation layer; meanwhile, the energy dissipation device has the characteristic of double-stage yield energy dissipation, the output of the metal energy dissipater can be promoted stage by stage along with the increase of the earthquake action, and the metal energy dissipater is guaranteed to have excellent energy dissipation and shock absorption effects under different earthquake levels.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a metal energy dissipater suitable for bidirectional double-step yielding of a seismic isolation layer, which comprises: a first yielding energy consumption section and a second yielding energy consumption section; the first yielding energy consumption section is formed by orthogonally arranging four groups of U-shaped energy consumption units and is used for absorbing seismic energy input in two directions; the second yield energy consumption section is formed by orthogonally arranging two groups of shear yield energy consumption steel plates, and end plates are arranged at the upper end and the lower end to provide end part restraint.
Preferably, the metal energy dissipater further comprises: the device comprises an upper anchor bolt, a positioning flange, a limiting key, a limiting ring and a lower anchor bolt;
the upper part of the first yielding energy consumption section is connected with the positioning flange;
the lower part of the first yielding energy consumption section is connected with the limiting ring;
the upper part of the second yield energy consumption section is connected with the positioning flange;
the lower end of the second yield energy consumption section is connected with the limit key;
the limiting key is positioned on the inner side of the limiting ring;
the upper anchor bolt is arranged on the positioning flange;
the lower anchor bolt is arranged on the limiting ring.
Preferably, the outer end of the straight line section at the upper part of the U-shaped energy consumption unit is connected with the outer side wall of the positioning flange; the outer end of the straight line section at the lower part of the U-shaped energy consumption unit is connected with the outer side wall of the limiting ring.
Preferably, the cross-sectional width of the U-shaped energy consumption unit is gradually changed from a straight line segment to an arc segment from large to small.
Preferably, the thickness of the cross section of the U-shaped energy consumption unit is gradually changed from a straight line segment to an arc segment from large to small.
Preferably, the second yielding energy consumption segment includes: the upper restraint end plate, the lower restraint end plate and the shear yield energy consumption steel plate; the shear yield energy-consuming steel plate is formed by orthogonally arranging two groups of shear yield energy-consuming steel plates; an upper restraint end plate is arranged at the upper end of the shear yield energy consumption steel plate and is connected with the positioning flange; the lower end of the shear yield energy consumption steel plate is provided with a lower restraint end plate, and the lower restraint end plate is connected with the limiting key.
Preferably, the second yielding energy dissipating segment has a greater stiffness and yield force than the first yielding energy dissipating segment.
By adopting the technical scheme, the invention has the following beneficial effects:
(1) compared with the traditional damper, the damper adopts a design mode of double-stage yielding, and the yielding principles of the energy consumption sections in the two stages are different. The first yielding energy consumption section utilizes a bending deformation yielding energy consumption mechanism of the U-shaped mild steel, so that the yielding point of the U-shaped mild steel can flow along with deformation, the yielding point concentration is avoided, the damper is ensured to have great deformability, and the damper is not broken or failed under great deformation of the shock insulation layer. The second yield energy consumption section utilizes a yield energy consumption mechanism of metal shear deformation to ensure that the damper can reach larger yield force when the second section has smaller yield displacement.
(2) Compared with the traditional damper which only has a better energy consumption effect under a certain seismic level and has the defect that the energy consumption effect is gradually reduced under other seismic levels, the damper provided by the invention can be used for designing the yield force of the damper respectively aiming at the energy consumption requirements under different seismic levels according to the size of the earthquake action and the energy consumption requirement of the structure, so that the energy consumption and damping effect of the damper can be continuously increased along with the improvement of the seismic level.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Figure 1 is a perspective view of a metal energy dissipater provided in embodiments of the present invention;
figure 2 is a side view of a metal dissipater provided in an embodiment of the present invention;
figure 3 is a top view of a metal energy dissipater provided in embodiments of the present invention;
figure 4 is an exploded view of a metal energy dissipater provided in an embodiment of the present invention;
figure 5 is a schematic view of a metal dissipater according to an embodiment of the present invention in a first operating condition;
figure 6 is a schematic view of a metal dissipater according to an embodiment of the present invention in a second operating condition;
figure 7 is a graph of the sectional yield hysteresis of a metal energy dissipater provided by an embodiment of the invention.
Icon: 1-an upper anchor bolt; 2-positioning a flange; 3-a second yield energy consumption section; 4-a limit key; 5-a first yield energy consumption section; 6-a limiting ring; 7-lower anchor bolt.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Referring to fig. 1 to 6, the present embodiment provides a two-way two-step yielding metal energy dissipater suitable for seismic isolation layers, which can be connected to upper and lower seismic isolation buttresses of the seismic isolation layers, thereby exerting energy dissipation and shock absorption effects. It should be noted that this embodiment may also be referred to as a caterpillar-type metal damper with a double-step yield point, which is applicable to seismic isolation layers, so that the terms metal energy dissipater and metal damper are equally replaced in this application.
Specifically, the metal energy dissipater comprises: a first yielding energy consumption section 5 and a second yielding energy consumption section 3;
the first yielding energy consumption section 5 is formed by orthogonally arranging four groups of U-shaped energy consumption units and is used for absorbing seismic energy input in two directions; the U-shaped energy dissipation units of the first yielding energy dissipation section 5 are made of mild steel with low yield point and good ductility. According to the size of the earthquake action and the structural energy consumption requirement, the cross section of the first yielding damper can be designed into cross sections with different sizes.
The second yield energy consumption section 3 is formed by orthogonally arranging two groups of shear yield energy consumption steel plates, end plates are arranged at the upper end and the lower end to provide end part restraint, and the steel plates are prevented from out-of-plane buckling. The shearing yield energy consumption steel plate of the second yield energy consumption section 3 can be made of steel with a higher yield point. The thickness of the steel plate of the second yielding energy consumption section 3 is larger than that of the first yielding energy consumption section 5, and the rigidity and the yielding force of the steel plate are larger than those of the first yielding energy consumption section 5, so that the damper enters the working state of the second yielding energy consumption section 3 along with the increase of the earthquake action, the damping force is increased, and the energy consumption effect is further improved. According to the earthquake action size and the structure energy consumption requirement, the plate section specific numerical value of the second yielding energy consumption section 3 needs to be designed according to the engineering requirement.
The specific form of the metal energy dissipater can be flexibly arranged according to actual needs, and a specific structure is exemplified below.
Preferably, the metal energy dissipater further comprises: the energy-saving device comprises an upper anchor bolt 1, a positioning flange 2, a first yielding energy-consuming section 5, a second yielding energy-consuming section 3, a limiting key 4, a limiting ring 6 and a lower anchor bolt 7; the upper part of the first yielding energy consumption section 5 is connected with the positioning flange 2; the lower part of the first yielding energy consumption section 5 is connected with the limiting ring 6; the upper part of the second yielding energy consumption section 3 is connected with the positioning flange 2; the lower end of the second yielding energy consumption section 3 is connected with the limit key 4; the limiting key 4 is positioned on the inner side of the limiting ring 6; the upper anchor bolt 1 is arranged on the positioning flange 2; the lower anchor bolt 7 is arranged on the limit ring 6.
Specifically, the outer contour of the positioning flange 2 is circular in shape.
Correspondingly, the stop collar 6 is circular in shape.
Preferably, the first yielding segment and the positioning flange 2 and the limiting ring 6 can be fixed through welding connection or bolt connection.
Preferably, the second yielding segment and the positioning flange 2 are made of the same material, and the second yielding segment and the positioning flange can be connected in a bolt connection or welding mode.
Further, the outer end of the straight line section at the upper part of the U-shaped energy consumption unit is connected with the outer side wall of the positioning flange 2; the outer end of the straight line section at the lower part of the U-shaped energy consumption unit is connected with the outer side wall of the limiting ring 6. The cross section width of the U-shaped energy consumption unit is gradually changed from a straight line segment to an arc segment from large to small. The thickness of the cross section of the U-shaped energy consumption unit is gradually changed from a straight line segment to an arc segment from large to small. It can be seen that, in order to make the first yielding energy dissipation section 5 enter the yielding energy dissipation state as early as possible and improve the energy dissipation and shock absorption effects thereof, the U-shaped energy dissipation unit of the first yielding energy dissipation section 5 can be designed to be a gradually changing section, that is, the section width and the section thickness from the section of the straight line section to the arc section can be gradually changed from large to small, so that the arc section yields as early as possible under the action of an earthquake. It is understood that in a preferred embodiment of the present invention, the cross-sectional width and the cross-sectional thickness are both minimum values at the midpoint of the arc segment.
Preferably, the second yielding energy dissipation section 3 comprises: the upper restraint end plate, the lower restraint end plate and the shear yield energy consumption steel plate; the shear yield energy-consuming steel plate is formed by orthogonally arranging two groups of shear yield energy-consuming steel plates; an upper restraint end plate is arranged at the upper end of the shear yield energy consumption steel plate and is connected with the positioning flange 2; the lower end of the shear yield energy consumption steel plate is provided with a lower restraint end plate, and the lower restraint end plate is connected with the limit key 4.
In this embodiment, the yielding energy consumption can be performed in stages by arranging the limit key 4 and the limit ring 6 between the first yielding energy consumption section 5 and the second yielding energy consumption section 3. When the gap between the limiting key 4 and the limiting ring 6 is larger than 0, the damper is in a first working state, namely under the action of a small earthquake, the displacement of the damper does not exceed the radius of the inner ring of the limiting ring 6, and the damper only enters a yield energy consumption working state through the first yield energy consumption section 5; when the gap between the limit key 4 and the limit ring 6 is equal to 0, the damper is in a second working state, namely, along with the increase of the earthquake action, under the action of medium and large earthquakes, the displacement of the damper exceeds the limit value of the radius of the inner ring of the limit ring 6, and the first yielding energy consumption section 5 and the second yielding energy consumption section 3 of the damper both enter the working state of yielding energy consumption.
The first yielding energy consumption section 5 can yield energy consumption under a small earthquake, the second yielding energy consumption section 3 can design the second yielding energy consumption section 3 to begin yielding energy consumption under the action of a medium earthquake or a large earthquake according to the energy consumption requirement of the structure by reasonably setting the radius of the inner ring of the limiting ring 6, and when the deformation of the damper does not exceed the inner diameter of the limiting ring 6, the second yielding energy consumption section 3 cannot enter a working state when the first yielding energy consumption section 5 works, and the working of the first yielding energy consumption section 5 is not influenced.
As shown in FIG. 7, a typical hysteresis energy consumption curve of each stage of yielding energy consumption section of the double-stage yielding type crawler metal damper is shown under a certain section. Under the condition that the displacement of the damper is small, the first yielding energy consumption section 5 enters a yielding energy consumption state, and along with the increase of the displacement of the two ends of the damper, the first yielding energy consumption section 3 and the second yielding energy consumption section 3 simultaneously enter the yielding energy consumption state. As can be seen from the total hysteresis curve of the damper, as the displacement of the damper increases, the damping force of the damper is obviously improved, which indicates that the second yielding energy dissipation section 3 starts to enter the working state, and the area surrounded by the hysteresis energy dissipation curve of the damper is increased, i.e. the energy dissipation capacity of the damper is gradually improved as the earthquake action increases.
In summary, the present application has the following advantages:
(1) this application compares traditional attenuator and adopts the design mode of two-step yield, and the yield principle of two stage power consumption sections is different. The first yielding energy consumption section 5 utilizes a bending deformation yielding energy consumption mechanism of the U-shaped mild steel, so that the yielding point of the U-shaped mild steel can flow along with deformation, the yielding point concentration is avoided, the damper is ensured to have great deformability, and the damper is not broken or failed under great deformation of the shock insulation layer. The second yield energy consumption section 3 utilizes a yield energy consumption mechanism of metal shear deformation to ensure that the damper can reach larger yield force when the second section has smaller yield displacement.
(2) Compared with the traditional damper which only has a better energy consumption effect under a certain seismic level and has the defect that the energy consumption effect is gradually reduced under other seismic levels, the damper provided by the invention can be used for designing the yield force of the damper respectively aiming at the energy consumption requirements under different seismic levels according to the size of the earthquake action and the energy consumption requirement of the structure, so that the energy consumption and shock absorption effects of the damper can be continuously increased along with the improvement of the seismic level.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. A metal energy dissipater suitable for bidirectional two-step yielding of seismic isolation layers is characterized by comprising: a first yielding energy consumption section and a second yielding energy consumption section;
the first yielding energy consumption section is formed by orthogonally arranging four groups of U-shaped energy consumption units and is used for absorbing seismic energy input in two directions;
the second yield energy consumption section is formed by orthogonally arranging two groups of shear yield energy consumption steel plates, and end plates are arranged at the upper end and the lower end to provide end part restraint.
2. A bi-directional, double-order yielding metal dissipater suitable for seismic isolation layers as claimed in claim 1, further comprising: the device comprises an upper anchor bolt, a positioning flange, a limiting key, a limiting ring and a lower anchor bolt;
the upper part of the first yielding energy consumption section is connected with the positioning flange;
the lower part of the first yielding energy consumption section is connected with the limiting ring;
the upper part of the second yield energy consumption section is connected with the positioning flange;
the lower end of the second yield energy consumption section is connected with the limit key;
the limiting key is positioned on the inner side of the limiting ring;
the upper anchor bolt is arranged on the positioning flange;
the lower anchor bolt is arranged on the limiting ring.
3. The two-way double-order-yield metal energy dissipater suitable for seismic isolation layers as claimed in claim 2, wherein the outer end of the straight line section of the upper part of the U-shaped energy dissipation unit is connected with the outer side wall of the positioning flange;
the outer end of the straight line section at the lower part of the U-shaped energy consumption unit is connected with the outer side wall of the limiting ring.
4. The two-way two-step yielding metal energy dissipater suitable for seismic isolation layers as claimed in claim 3, wherein the cross-sectional width of the U-shaped energy dissipation units is gradually reduced from the straight line segment to the arc segment.
5. The two-way two-step yielding metal energy dissipater suitable for seismic isolation layers as claimed in claim 3, wherein the thickness of the cross section of the U-shaped energy dissipation unit is gradually reduced from the straight line segment to the arc segment.
6. The two-way double-step yielding metal energy dissipater suitable for seismic isolation layers as claimed in claim 2, wherein said second yielding energy dissipation stage comprises: the upper restraint end plate, the lower restraint end plate and the shear yield energy consumption steel plate;
the shear yield energy-consuming steel plate is formed by orthogonally arranging two groups of shear yield energy-consuming steel plates;
an upper restraint end plate is arranged at the upper end of the shear yield energy consumption steel plate and is connected with the positioning flange;
the lower end of the shear yield energy consumption steel plate is provided with a lower restraint end plate, and the lower restraint end plate is connected with the limiting key.
7. The two-way double-order yielding metal energy dissipater suitable for seismic isolation layers as claimed in claim 1, wherein the second yielding energy dissipation segment has greater rigidity and yield force than the first yielding energy dissipation segment.
CN202110769132.0A 2021-07-07 2021-07-07 Two-way two-step yielding metal energy dissipater suitable for seismic isolation layer Active CN113338688B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110769132.0A CN113338688B (en) 2021-07-07 2021-07-07 Two-way two-step yielding metal energy dissipater suitable for seismic isolation layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110769132.0A CN113338688B (en) 2021-07-07 2021-07-07 Two-way two-step yielding metal energy dissipater suitable for seismic isolation layer

Publications (2)

Publication Number Publication Date
CN113338688A true CN113338688A (en) 2021-09-03
CN113338688B CN113338688B (en) 2023-01-10

Family

ID=77482938

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110769132.0A Active CN113338688B (en) 2021-07-07 2021-07-07 Two-way two-step yielding metal energy dissipater suitable for seismic isolation layer

Country Status (1)

Country Link
CN (1) CN113338688B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115929095A (en) * 2022-12-26 2023-04-07 广州大学 Metal laminated ring three-dimensional damper and manufacturing method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160039714A (en) * 2014-10-01 2016-04-12 단국대학교 산학협력단 Multi-action Hybrid Damping Device for Mitigation of Building Vibration
CN106401003A (en) * 2016-11-22 2017-02-15 上海天华建筑设计有限公司 Multi-working condition work mild steel energy dissipation machine
CN106639469A (en) * 2016-11-25 2017-05-10 西安建筑科技大学 Phased yield type mild steel damper
CN109972763A (en) * 2019-04-30 2019-07-05 辽宁科技大学 A kind of Zn-Al alloy damper
CN111945911A (en) * 2020-07-20 2020-11-17 北京工业大学 Detachable U-shaped corrugated steel plate damper with double-layer oblique seam
CN112681552A (en) * 2020-12-24 2021-04-20 青岛理工大学 Second-order enhanced type connecting beam type metal damping shock absorption system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160039714A (en) * 2014-10-01 2016-04-12 단국대학교 산학협력단 Multi-action Hybrid Damping Device for Mitigation of Building Vibration
CN106401003A (en) * 2016-11-22 2017-02-15 上海天华建筑设计有限公司 Multi-working condition work mild steel energy dissipation machine
CN106639469A (en) * 2016-11-25 2017-05-10 西安建筑科技大学 Phased yield type mild steel damper
CN109972763A (en) * 2019-04-30 2019-07-05 辽宁科技大学 A kind of Zn-Al alloy damper
CN111945911A (en) * 2020-07-20 2020-11-17 北京工业大学 Detachable U-shaped corrugated steel plate damper with double-layer oblique seam
CN112681552A (en) * 2020-12-24 2021-04-20 青岛理工大学 Second-order enhanced type connecting beam type metal damping shock absorption system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115929095A (en) * 2022-12-26 2023-04-07 广州大学 Metal laminated ring three-dimensional damper and manufacturing method thereof
CN115929095B (en) * 2022-12-26 2024-05-24 广州大学 Metal stacked ring three-dimensional damper and manufacturing method thereof

Also Published As

Publication number Publication date
CN113338688B (en) 2023-01-10

Similar Documents

Publication Publication Date Title
CN111364635B (en) Multi-disaster and multi-performance target-oriented multi-yield-point metal shear damper
CN210216818U (en) Assembled superimposed corrugated steel plate energy dissipation shear wall
CN113338688B (en) Two-way two-step yielding metal energy dissipater suitable for seismic isolation layer
CN203188399U (en) Metal damper utilizing steel plate surface internal deformation to consume energy
CN113374108A (en) Metal composite energy dissipater with double-order yield point for seismic isolation layer
JP2002227898A (en) Base isolating damper
CN111173155B (en) Shearing-bending parallel connection type graded energy dissipation damper
CN211597165U (en) Tension-compression damper with improved arc-shaped component and horizontal corrugated steel plate combined energy consumption
CN215054165U (en) Anti-buckling double-yield-point shearing type mild steel damper with limiting function
CN110820977A (en) Viscoelastic coupling beam damper with unidirectional shearing deformation
CN113323176A (en) Anti-buckling double-yield-point shearing type mild steel damper with limiting function
CN108978921A (en) Lateral drawing and pressing type energy dissipation brace
CN113338467B (en) Hierarchical yield shear type mild steel damper and construction method thereof
JP4547979B2 (en) Vibration control pillar
CN212506857U (en) Metal and spring rubber composite damper
CN110185143B (en) Assembly connection structure between beam bodies in steel structure building
CN104790553B (en) Combined mild steel damper
JP3185678B2 (en) Seismic isolation device
CN114000603A (en) Building shock-absorbing structure and multidimensional energy dissipation damper thereof
JP3800476B2 (en) Earthquake resistant building
JP4312026B2 (en) Support side block
CN217840569U (en) Reinforced concrete beam capable of improving collapse resistance and impact resistance
CN219773255U (en) Variable-order metal yield damper
CN217840567U (en) Steel structure steel beam capable of improving collapse resistance and impact resistance
CN108678510A (en) The frictional square steel energy dissipation brace of tension and compression

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant