CN111962705B - Hierarchical energy dissipater - Google Patents
Hierarchical energy dissipater Download PDFInfo
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- CN111962705B CN111962705B CN202010843643.8A CN202010843643A CN111962705B CN 111962705 B CN111962705 B CN 111962705B CN 202010843643 A CN202010843643 A CN 202010843643A CN 111962705 B CN111962705 B CN 111962705B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
The invention discloses a graded energy dissipater, which comprises a first base and a second base; the first base and the second base longitudinally extend to the upper half part of the first base and the lower half part of the second base in a mutually staggered mode; the two end parts of the first yielding energy consumption part are respectively and fixedly connected with the middle part of the second base part and the upper part of the first base part; one of the bottom part of the second base part and the middle part of the first base part is fixedly connected with one end part of the second yielding energy dissipation part, and the other one of the bottom part of the second base part and the middle part of the first base part is connected with the other end part of the second yielding energy dissipation part in a longitudinally oriented sliding manner. When the first yielding energy dissipation member is deformed in a small earthquake, one end of the second yielding energy dissipation member is longitudinally and directionally connected with the first base or the second base in a sliding manner, so that the first base and the second base cannot apply stress to the second yielding energy dissipation member to deform the first base and the second base; and the relative displacement of the first base part and the second base part is larger than the sliding range of the longitudinal directional sliding during medium and large earthquakes, so that the first yielding energy dissipation part and the second yielding energy dissipation part jointly yield and dissipate energy.
Description
Technical Field
The invention relates to the technical field of energy dissipation and shock absorption, in particular to a hierarchical energy dissipater.
Background
A graded energy dissipater, such as a metal energy dissipater, is a device that uses damping characteristics to slow down mechanical vibration and consume kinetic energy, and can be used for shock absorption and energy dissipation in earthquake disasters. The grading energy dissipater applied to the building can dissipate part of energy of a seismic source through the plastic deformation of the metal structure in the grading energy dissipater when an earthquake occurs, so that the damage of the earthquake to the building is reduced.
The graded energy dissipaters have various structural forms, and can be roughly classified into steel graded energy dissipaters, lead graded energy dissipaters, memory alloy graded energy dissipaters and the like according to metal materials adopted by core energy dissipation components, and the steel graded energy dissipaters (particularly mild steel graded energy dissipaters) are most widely applied at present.
However, most of the existing metal graded energy dissipaters are used for yielding and consuming energy in the case of medium or large earthquakes, and are generally in an elastic stage in the case of small earthquakes, and do not consume energy, in other words, the graded energy dissipater cannot play a role in dissipating earthquake energy in the case of small earthquakes.
Disclosure of Invention
The invention aims to provide a graded energy dissipater which can realize the shock absorption and energy dissipation in small-earthquake, medium-earthquake and large-earthquake.
To achieve the above object, the present invention provides a graded dissipater comprising a first base and a second base located above the first base; the first base and the second base extend longitudinally toward each other to an upper half of the first base and a lower half of the second base side by side in an offset manner; the two end parts of the first yielding energy dissipation part are respectively and fixedly connected with the middle part of the second base part and the upper part of the first base part; one of the bottom part of the second base part and the middle part of the first base part is fixedly connected with one end part of the second yielding energy dissipation part, and the other one of the bottom part of the second base part and the middle part of the first base part is connected with the other end part of the second yielding energy dissipation part in a sliding mode along the longitudinal direction.
Preferably, the first yielding energy dissipating member is in particular an arch-shaped metal connecting member.
Preferably, the arched metal connector is recessed towards the first base.
Preferably, the cross-sectional dimension of the middle portion of the second yielding energy dissipating member is smaller than the cross-sectional dimensions of the two end portions.
Preferably, the second yielding energy dissipation part is an hourglass-shaped steel plate with two wide ends and a narrow middle part or a rectangular steel plate with a shuttle-shaped hole in the middle.
Preferably, the first ends of all the second yielding energy dissipation members are fixedly connected with the first base, and longitudinally distributed sliding hole plates are arranged between the second ends of all the second yielding energy dissipation members and the second base; the upper part of the sliding hole plate is provided with a linear sliding hole extending longitudinally, and the bottom end of the second base part is connected with the linear sliding hole in a sliding mode through a limiting pin shaft; and the lower part of the sliding hole plate is fixedly connected with the second ends of all the second yielding energy dissipation parts.
Preferably, the upper part and the middle part of the first base part are provided with communicated groove cavities; the bottom and the middle part of the second base part are inserted into the groove cavity in sequence; the plurality of first yielding energy dissipating members and the plurality of second yielding energy dissipating members are symmetrically arranged around the peripheral side of the first base portion.
Preferably, all of the second yielding energy dissipation members comprise a plurality of groups of the second yielding energy dissipation members which are distributed at intervals along the longitudinal direction; any group of the second yielding energy dissipation members are symmetrically distributed in the same horizontal plane by taking the first base part as a symmetry axis.
Preferably, the first base comprises a lower flange plate and a pair of metal plates fixed vertically and at intervals to the upper surface of the lower flange plate; the two inner walls of the pair of metal plates form the slot cavity; the second base includes an upper flange plate.
Preferably, the lower surface of the lower flange plate is provided with a lower support; and an upper supporting piece is arranged on the upper surface of the upper flange plate.
Against this background, the present invention provides a stepped dissipater comprising a first base and a second base located above the first base.
The first and second bases extend longitudinally toward each other to an upper half of the first base and a lower half of the second base side by side offset so that a bottom of the second base is horizontally adjacent a middle of the first base and the middle of the second base is horizontally adjacent an upper portion of the first base.
A first yielding energy dissipating member and the second base are mounted between the first base and the second base. The two end parts of the first yielding energy consumption part are respectively and fixedly connected with the middle part of the second base part and the upper part of the first base part; one end of the second yielding energy dissipating member is fixedly connected to one of the first base and the second base, and the other end of the second yielding energy dissipating member is slidably connected to the other of the first base and the second base in the longitudinal orientation.
When the first base part and the second base part generate smaller relative displacement under a small earthquake, the relative displacement causes the two ends of the first yielding energy dissipation part to be stressed to deform and yield; however, since one of the ends of the second yielding energy dissipating member is longitudinally oriented to be slidably connected to one of the first base portion and the second base portion, the relative displacement of the first base portion and the second base portion at this time is not sufficient to stress the second yielding energy dissipating member, and therefore, the second yielding energy dissipating member does not participate in the deforming yielding. Therefore, the first yielding energy dissipation member alone plays an energy dissipation role in small earthquakes.
When the second base part and the second base part generate larger relative displacement under medium and large earthquakes, the relative displacement exceeds the directional sliding range of the end part of the second yielding energy dissipation part, so that the first base part and the second base part begin to apply stress to two ends of the second yielding energy dissipation part to enable the second yielding energy dissipation part to deform and yield, therefore, the first yielding energy dissipation part and the second yielding energy dissipation part consume energy together under the medium and large earthquakes, and the second yielding energy dissipation part plays an energy dissipation role independently when the first yielding energy dissipation part is damaged due to incapability of bearing external force.
The hierarchical energy dissipater provided by the invention realizes hierarchical yield energy dissipation, plays an energy dissipation role through the deformation yield of the first yield energy dissipation part in small earthquakes, and plays an energy dissipation role through the first yield energy dissipation part and the second yield energy dissipation part in medium earthquakes and large earthquakes. Therefore, the grading energy dissipater can dissipate energy with different intensities caused by earthquakes to the maximum extent, remarkably lighten the vibration reaction of the structure, avoid the collapse of buildings, and has the advantages of low manufacturing cost, easy processing and convenient construction; strong deformation capability, excellent fatigue resistance and obvious energy consumption effect.
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, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Figure 1 is a schematic structural view of a stepped energy dissipater according to an embodiment of the present invention;
figure 2 is a schematic view of the assembly of a stepped energy dissipater and a frame structure according to an embodiment of the present invention.
The building body beam column is 01-a building body beam column, 1-a first base, 11-a lower flange plate, 12-a metal plate, 13-a lower supporting piece, 14-a lower ribbed plate, 15-a lower connecting bolt, 2-a second base, 21-an upper flange plate, 22-a sliding plate component, 23-an upper supporting piece, 24-an upper ribbed plate, 25-an upper connecting bolt, 3-a first yielding energy dissipation piece, 4-a second yielding energy dissipation piece, 5-a connecting bolt, 6-a sliding plate, 61-a linear sliding hole and 7-a limiting pin shaft.
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.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a graded energy dissipater according to an embodiment of the present invention; figure 2 is a schematic view of the assembly of a stepped energy dissipater and a frame structure according to an embodiment of the present invention.
The invention provides a stepped energy dissipater comprising a first base 1, a second base 2 located above the first base 1, and first and second yielding energy dissipating elements 3, 4 connected between the first and second bases 1, 2.
The first base part 1 extends longitudinally upwards, the second base part 2 extends longitudinally downwards, and the two parts extend towards each other. Wherein the lower half of the first base 1 and the upper half of the second base 2 are staggered side by side. In other words, the bottom of the second base 2 is horizontally adjacent to the middle of the first base 1, and the middle of the second base 2 is horizontally adjacent to the upper part of the first base 1. Depending on the specific shape of the first base 1 and the second base 2, the middle and bottom of the first base 1 may be located on one side of the second base 2, or may be located inside the second base 2.
Based on the relative positions of the first base 1 and the second base 2, the first yielding energy dissipation member 3 is installed between the upper part of the first base 1 and the middle part of the second base 2, and two ends of the first yielding energy dissipation member 3 are respectively and fixedly connected with the first base 1 and the second base 2. The second yielding energy dissipating member 4 is installed between the middle portion of the first base 1 and the bottom portion of the second base 2, one end portion of the second yielding energy dissipating member 4 is fixedly connected to one of the first base 1 and the second base 2, and the other end portion of the second yielding energy dissipating member 4 is directionally and slidably connected to the other of the first base 1 and the second base 2. Wherein the second yielding energy dissipating member 4 is longitudinally distributed with the directional sliding direction of the first base 1 or the second base 2.
According to the application of the graded energy dissipater, the materials of the first base 1, the second base 2 and the first yielding energy dissipating member 3 and the second yielding energy dissipating member 4 connected therebetween include, but are not limited to, metal materials. When the graded energy dissipater is applied to a building body, the first base 1, the second base 2, the first yielding energy dissipating member 3 and the second yielding energy dissipating member 4 are preferably made of metal materials such as steel.
With the above-mentioned graded energy dissipater, once an external seismic source applies stress to the first base 1 and the second base 2, which causes relative displacement of the first base 1 and the second base 2 in the longitudinal direction, the first yielding energy dissipation member 3 can yield in a deformation manner when the relative displacement of the first base 1 and the second base 2 is small, according to the relative displacement of the first base 1 and the second base 2, and at this time, the second yielding energy dissipation member 4 is connected with the first base 1 or the second base 2 in a longitudinally oriented sliding manner, so that the first base 1 and the second base 2 do not apply a force to the second yielding energy dissipation member 4, and therefore, the second yielding energy dissipation member 4 does not yield in a deformation manner when the relative displacement of the first base 1 and the second base 2 is small. Once the relative displacement of the first base 1 and the second base 2 exceeds the longitudinally oriented sliding range of the second yielding energy dissipating member 4, the first base 1 and the second base 2 begin to apply a force to both ends of the second yielding energy dissipating member 4, deforming the second yielding energy dissipating member to yield.
Therefore, the hierarchical energy dissipater plays an energy dissipation role through the deformation yielding of the first yielding energy dissipation part 3 in small earthquake, and plays an energy dissipation role through the first yielding energy dissipation part 3 and the second yielding energy dissipation part 4 in medium earthquake and large earthquake, so that the purpose of hierarchical energy dissipation is achieved. The hierarchical energy dissipater can be installed and fixed in a building body with a frame structure as an inclined support, and two ends of the hierarchical energy dissipater, namely the lower end of the first base part 1 and the upper end of the second base part 2, can be respectively connected to nodes of beam columns 01 of the corresponding building body of the building body, so that the hierarchical energy dissipation is realized when the frame structure deforms.
Compared with the prior art, the graded energy dissipater provided by the invention realizes graded yield energy dissipation in small earthquakes and large earthquakes, can dissipate energy with different intensities brought by earthquakes to the maximum extent, remarkably lightens the vibration reaction of the structure, effectively avoids building collapse when an earthquake occurs, and achieves the aim of building earthquake resistance. The grading energy dissipater has low manufacturing cost, easy processing and convenient construction; the deformation capability is strong, the fatigue resistance is excellent, and the energy consumption effect is obvious.
The invention provides a graded energy dissipater which is further described with reference to the accompanying drawings and embodiments.
The first yielding energy dissipating member 3 employed in the present invention may be provided as an arch-shaped metal connecting member. Two ends of the arched metal connecting piece along the arc length direction can be respectively and fixedly connected with the inner wall of the upper part of the first base part 1 and the middle part of the second base part 2 through connecting bolts 5.
The arched metal connecting piece can be specifically set as a U-shaped steel plate, and the two connecting bolts 5 are respectively connected to the straight steel plate surfaces on the two sides of the U-shaped steel plate.
The arched metal connecting piece can be sunken towards the first base 1, namely, the circle center of the arched metal connecting piece is close to the first base 1 and far away from the second base 2, and the distance between any end of the arched metal connecting piece and the first base 1 is smaller than the distance between the middle of the arched metal connecting piece and the first base 1.
Based on the shape characteristics of the arched metal connecting piece, when the first base part 1 and the second base part 2 generate relative displacement under the vibration of an external seismic source, the arched metal connecting piece is more easily driven to deform along the bending trend of the arched metal connecting piece, so that the vibration energy is consumed by the bending deformation of the arched metal connecting piece, and the damping and energy consumption are realized.
For the second yielding energy dissipating member 4 used in the present invention, the cross-sectional dimension of the middle portion is smaller than the cross-sectional dimensions of the two end portions. The second yielding energy dissipating member 4 may be provided in a rod shape, a plate shape, or the like, and preferably a metal such as a steel material.
When the second yielding energy dissipation member 4 is made of a metal material, one end of the second yielding energy dissipation member 4 can be fixedly connected to one of the first base 1 and the second base 2 by welding.
The second yielding energy dissipation member 4 may be a hourglass-shaped steel plate with two wide ends and a narrow middle part, or a rectangular steel plate with a hole in the middle part. Wherein, the middle part of the rectangular steel plate can be provided with holes with small ends and large middle parts, such as a fusiform hole or a rhombus hole.
The shape and the structure of the second yielding energy dissipation member 4 are adapted to the stress characteristics of the second yielding energy dissipation member 4, that is, the second yielding energy dissipation member 4 is installed between the first base 1 and the second base 2 in a structure connection relationship that one end is fixed and the other end slides in a directional manner to form a single-span hyperstatic beam, so that the middle of the second yielding energy dissipation member 4 is a reverse bending point, and the bending moment applied to the second yielding energy dissipation member 4 gradually increases from the middle to the two ends. By combining the characteristics of the geometric shape that the middle part of the second yielding energy dissipation member 4 is narrow and the two ends of the second yielding energy dissipation member 4 are wide, bending moments applied to the second yielding energy dissipation member 4 by an external seismic source can be uniformly distributed along the length direction of the second yielding energy dissipation member 4, so that the improvement of the damping characteristic of the second yielding energy dissipation member 4 on a damping structure is facilitated, and on the other hand, the effect of saving materials can be achieved.
In the various embodiments provided by the present invention, the first end of the second yielding energy dissipating member 4 is fixedly connected to the middle portion of the first base portion 1, and the second end of the second yielding energy dissipating member 4 is longitudinally and slidably connected to the lower portion of the second base portion 2 through the sliding hole plate 6.
The upper part of the slide hole plate 6 is provided with a linear slide hole 61 extending longitudinally, and the lower part of the second base part 2 is hinged with the linear slide hole 61 through a limit pin shaft 7, so that the slide hole plate 6 is connected with the second base part 2 in a longitudinally oriented sliding manner. Since the lower part of the slide hole plate 6 is fixedly connected with the second ends of all the second yielding energy dissipation members 4, all the second yielding energy dissipation members 4 and the lower part of the second base 2 have a longitudinally-oriented sliding connection relationship under the action of the slide hole plate 6 and the linear slide holes 61 thereof.
In order to achieve better technical results, in the above embodiment, the lower portion of the second base 2 is provided with the sliding plate assembly 22. Referring to fig. 1, the lower end of the sliding plate assembly 22 includes two longitudinally parallel spaced apart limiting plates for forming a sliding channel chamber into which the sliding orifice plate 6 is inserted. The limiting pin shaft 7 transversely penetrates through the two limiting plates, and the part of the limiting pin shaft 7 positioned in the middle of the two limiting plates is connected with the linear sliding hole 61 in a sliding mode.
For the above embodiment, when the first base 1 and the second base 2 generate relative displacement under a small shock, the limit pin 7 slides up and down along the linear sliding hole 61 of the sliding hole plate 6 under the action of the relative displacement, so that at this time, the second yielding energy dissipation member 4 does not actually bear the acting force of the first base 1 and the second base 2, and thus, no yielding occurs. When the first base part 1 and the second base part 2 generate large relative displacement under medium and large earthquakes, at the moment, the sliding displacement of the limiting pin shaft 7 relative to the linear sliding hole 61 exceeds the maximum constraint range of the linear sliding hole 61, and the acting force of the first base part 1 and the second base part 2 is transmitted to the second yielding energy dissipation part 4 through the limiting pin shaft 7 and the sliding hole plate 6 provided with the linear sliding hole 61, so that the second yielding energy dissipation part 4 starts to yield and deform to achieve an energy dissipation effect.
As for the length of the straight sliding hole 61, the length can be determined according to the energy consumption situation and deformation displacement of the first yielding energy consumption piece 3 and the second yielding energy consumption piece 4 in the actual engineering. In short, the length of the straight slide hole should ensure that the second yielding energy dissipation member 4 deforms and yields only when a medium earthquake and a large earthquake occur, so as to play the grading energy dissipation role of the grading energy dissipater.
In order to achieve better technical effects, on the basis of any one of the above-mentioned embodiments, the upper part and the middle part of the first base part 1 are provided with communicated slot cavities, and the bottom part and the middle part of the second base part 2 are inserted into the slot cavities in sequence. Thus, the first yielding energy dissipating member 3 and the second yielding energy dissipating member 4 are both connected between the inner wall of the second base 2 and the outer wall of the first base 1.
One or more first yielding dissipative members 3 can be arranged between the inner wall of the second base 2 and the outer wall of the first base 1, all first yielding dissipative members 3 being symmetrically arranged around the first base 1. Similarly, one or more second yielding energy dissipating elements 4 may be arranged between the inner wall of the second base 2 and the outer wall of the first base 1, all second yielding energy dissipating elements 4 also being symmetrically arranged around the first base 1.
Wherein, all the second yielding energy dissipation members 4 may comprise a plurality of groups of second yielding energy dissipation members 4 distributed at intervals along the longitudinal direction; any group of second yielding energy dissipation members 4 are symmetrically distributed on the same horizontal plane by taking the first base 1 as a symmetry axis. Taking fig. 1 as an example, the number of the second yielding energy dissipation members 4 is six, and the six first yielding energy dissipation members 3 are divided into three groups along the longitudinal direction, and two adjacent groups are spaced at a certain height along the longitudinal direction. A set comprises two second yielding energy dissipating members 4 mounted symmetrically with the first base 1 as symmetry axis.
The number of the first yielding energy dissipating members 3 may be set to two, and the two first yielding energy dissipating members 3 are symmetrically distributed on both sides of the second base 2. Two ends of any one first yielding energy dissipation member 3 are fixedly connected with the upper inner wall of the first base part 1 and the middle part of the second base part 2 through connecting bolts 5 respectively.
The graded energy dissipater can be applied to buildings, especially buildings with frame structure systems.
As regards the first base 1 and the second base 2 of the stepped dissipater, reference is made to figure 1.
The first base 1 includes a lower flange plate 11 and a pair of metal plates 12. The lower flange plate 11 can be used for connecting a building; a pair of metal plates 12 are vertically fixed to the upper surface of the lower flange plate 11 and are spaced apart in the horizontal direction.
The two inner walls of the horizontally spaced metal plates 12 form the cavity according to the above embodiment, and the middle and bottom of the second base part 2 are inserted along the middle of the cavity.
Any one of the metal plates 12 may have a planar plate-like structure or a curved plate-like structure. In the former case, a rectangular groove-shaped cavity is formed between the pair of metal plates 12, and in the latter case, a shuttle-shaped cavity or a column cavity with a closed peripheral side is formed between the pair of metal plates 12. No matter what structure the metal plates 12 are, depending on the arrangement of the slot cavity, the plurality of first yielding energy dissipating members 3 and the plurality of second yielding energy dissipating members 4 may be symmetrically connected between the bottom of the second base 2 extending into the slot cavity and the inner walls of the pair of metal plates 12 in this embodiment.
Further, the second base 2 comprises an upper flange plate 21. Wherein, the upper flange plate 21 is similar to the lower flange plate 11 in function, all can be used to connect the building body of treating the construction to install this hierarchical energy dissipater between building body beam column 01.
In addition, the first base 1 may further include a lower support 13 fixedly coupled to a lower surface of the lower flange plate 11, and the lower support 13 may be used to quickly connect a beam and a column in a building having a frame structure. Similarly, the second base 2 may further include an upper support 23 fixedly attached to the upper surface of the upper flange plate 21.
A lower rib 14 may be provided between the lower flange plate 11 and the lower support 13 to reinforce the structural strength of the first base 1 and improve the pressure and shear resistance of the first base 1. The lower flange plate 11 and the lower support 13 can be fixedly connected by the upper connecting bolts 25. Also, an upper rib 24 may be provided between the upper flange plate 21 and the upper support 23 to reinforce the structural strength of the second base 2, and the upper flange plate 21 and the upper support 23 may be fixedly connected by the lower connecting bolt 15. Obviously, when the graded energy dissipater is installed in a building body, any one of the lower flange plate 11 and the upper flange plate 21, or the upper support member 23 and the lower support member 13 may be selected as a connecting structure.
The energy dissipation device realizes graded yield energy dissipation by arranging the first yielding energy dissipation part 3 and the second yielding energy dissipation part 4 between the first base part 1 and the second base part 2, and is particularly suitable for being installed in a building body with a frame structure system as an inclined support.
The present invention provides a graded energy dissipater as described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A stepped energy dissipater, characterised by comprising a first base (1) and a second base (2) located above the first base (1); the first base (1) and the second base (2) extend longitudinally towards each other to the upper half of the first base (1) and the lower half of the second base (2) are staggered side by side; two end parts of the first yielding energy dissipation part (3) are respectively and fixedly connected with the middle part of the second base part (2) and the upper part of the first base part (1); one of the bottom of the second base part (2) and the middle of the first base part (1) is fixedly connected with one end part of a second yielding energy dissipation piece (4), and the other one is connected with the other end part of the second yielding energy dissipation piece (4) in a sliding mode along the longitudinal direction;
when the relative displacement of the first base part (1) and the second base part (2) exceeds the longitudinal directional sliding range of the second yielding energy dissipation piece (4), the first base part (1) and the second base part (2) start to apply force to two ends of the second yielding energy dissipation piece (4) to enable the second yielding energy dissipation piece (4) to deform and yield.
2. A graded energy dissipater according to claim 1, characterized in that the first yielding energy dissipating member (3) is embodied as an arch-shaped metal connecting member.
3. A graded energy dissipater according to claim 2, wherein the arched metal connectors are recessed towards the first base (1).
4. A graded energy dissipater according to claim 1, wherein the cross-sectional dimension of the middle portion of the second yielding energy dissipater (4) is smaller than the cross-sectional dimensions of the two end portions.
5. A graded energy dissipater according to claim 4, characterized in that the second yielding energy dissipating element (4) is embodied as an hourglass-shaped steel plate with wide ends and narrow middle or as a rectangular steel plate with shuttle-shaped holes in the middle.
6. A graded energy dissipater according to claim 1, wherein first ends of all the second yielding energy dissipating members (4) are fixedly connected to the first base (1), and longitudinally distributed slip-orifice plates (6) are provided between second ends of all the second yielding energy dissipating members (4) and the second base (2); the upper part of the sliding hole plate (6) is provided with a linear sliding hole (61) extending longitudinally, and the bottom end of the second base part (2) is connected to the linear sliding hole (61) in a sliding mode through a limiting pin shaft (7); the lower part of the sliding hole plate (6) is fixedly connected with the second ends of all the second yielding energy dissipation members (4).
7. A graded energy dissipater according to any one of claims 1 to 6, wherein the upper and middle parts of the first base (1) are provided with communicating channels; the bottom and the middle part of the second base part (2) are inserted into the groove cavity in sequence; the first yielding energy dissipation members (3) and the second yielding energy dissipation members (4) are symmetrically arranged around the peripheral side of the first base (1).
8. A graded energy dissipater according to claim 7, wherein all of the second yielding energy dissipaters (4) comprise a plurality of sets of the second yielding energy dissipaters (4) spaced apart longitudinally; any group of the second yielding energy dissipation members (4) are symmetrically distributed in the same horizontal plane by taking the first base (1) as a symmetry axis.
9. A graded energy dissipater according to claim 7, wherein the first base (1) comprises a lower flange plate (11) and a pair of metal plates (12) secured vertically and spaced to an upper surface of the lower flange plate (11); the two inner walls of a pair of said metal plates (12) forming said slot cavity; the second base (2) comprises an upper flange plate (21).
10. A graded energy dissipater according to claim 9, wherein the lower surface of the lower flange plate (11) is provided with a lower support (13); the upper surface of the upper flange plate (21) is provided with an upper support member (23).
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004308914A (en) * | 2004-05-24 | 2004-11-04 | Tatsuji Ishimaru | Damper |
| CN109763582A (en) * | 2019-03-11 | 2019-05-17 | 江苏科技大学 | A kind of connection of groove can repairing type Low Yield Point Steel damper |
| CN110080409A (en) * | 2019-05-14 | 2019-08-02 | 江苏科技大学 | A kind of combined recoverable metal damper of fricting shearing |
| CN110206184A (en) * | 2019-06-20 | 2019-09-06 | 海南大学 | A kind of compound damping classification surrender damper |
-
2020
- 2020-08-20 CN CN202010843643.8A patent/CN111962705B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004308914A (en) * | 2004-05-24 | 2004-11-04 | Tatsuji Ishimaru | Damper |
| CN109763582A (en) * | 2019-03-11 | 2019-05-17 | 江苏科技大学 | A kind of connection of groove can repairing type Low Yield Point Steel damper |
| CN110080409A (en) * | 2019-05-14 | 2019-08-02 | 江苏科技大学 | A kind of combined recoverable metal damper of fricting shearing |
| CN110206184A (en) * | 2019-06-20 | 2019-09-06 | 海南大学 | A kind of compound damping classification surrender damper |
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| CN111962705A (en) | 2020-11-20 |
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