CN108086509B - Concealed double-order yielding damper - Google Patents
Concealed double-order yielding damper Download PDFInfo
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- CN108086509B CN108086509B CN201711326500.4A CN201711326500A CN108086509B CN 108086509 B CN108086509 B CN 108086509B CN 201711326500 A CN201711326500 A CN 201711326500A CN 108086509 B CN108086509 B CN 108086509B
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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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- 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
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
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- Environmental & Geological Engineering (AREA)
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- Vibration Prevention Devices (AREA)
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Abstract
The invention provides an embedded double-order yield damper, and relates to the technical field of constructional engineering. The concealed double-stage yielding damper takes the steel beam section with the box-shaped section as a main composition structure, can be installed in a beam, does not occupy the use space of a building, and does not influence the beautiful appearance of the building; meanwhile, the box section steel beam section has a double-web structure, so that the damper has larger bearing capacity; the main structure has higher rotational rigidity through plug welding of the reinforced steel plate, and the rigidity of the joint is improved in the elastic working stage; in addition, the damper realizes double-order yield by utilizing two energy consumption modules to consume energy, can meet different energy consumption requirements under two deformations, and has great practical value.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an embedded double-order yield damper.
Background
In recent years, with the frequent occurrence of earthquakes in the global scope and in order to meet the development needs of increasingly-improved engineering structures, the structure damping passive control theory is widely applied, breaks through the traditional anti-seismic method for consuming the earthquake energy by relying on the ductility of the structure, mainly consumes the earthquake energy by relying on an externally-added energy dissipation device, and reduces or even eliminates the damage of the main structure.
The friction damper and the lead shear damper are energy dissipation devices attached to the structure, the friction damper uses sliding friction force to do work, and the structure has the functions of dissipating energy and absorbing shock; the lead shear damper utilizes plastic deformation generated after lead is sheared and yielding, so as to achieve the purposes of energy consumption and shock absorption.
At present, the rotation damper applied to beam column and beam connection is mainly developed: friction dampers, metal dampers, composite dampers, some rotational energy consuming nodes, and the like. But currently for such dissipative dampers, the following drawbacks are common: the rotation rigidity is low, and the bearing capacity is low; occupying the using space of the building and affecting the beautiful appearance of the building; it is difficult to realize double-order yielding for the damper with single energy-consuming damping mechanism, and the energy-consuming requirements under different deformations are met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the concealed double-order yield damper which has larger rotation rigidity, larger bearing capacity, does not occupy building space and has good energy consumption and shock absorption performance.
In order to achieve the above object, the present invention provides the following technical solutions:
an concealed double-order yield damper is characterized in that: the steel plate shearing device comprises a box girder section upper flange, a box girder section lower flange, two box girder section webs, a reinforced steel plate, four steel cover plates and shearing lead blocks;
the upper flange of the box girder section and the lower flange of the box girder section are arranged in parallel up and down; the two box girder section webs are respectively and vertically connected between the upper flange of the box girder section and the lower flange of the box girder section, and are arranged in parallel front and back; the upper flange of the box girder section, the lower flange of the box girder section and two box girder section webs jointly form a box girder section;
the upper flange of the box steel beam section is kept continuous in the range of the beam section, and the lower flange of the box steel beam section and the webs of the two box steel beam sections are disconnected at a certain section of the steel beam section to form a gap with a certain distance; the notch formed at the lower flange of the box girder section is a lower flange notch, and the notch formed at the web of the box girder section is a web notch;
a reinforced steel plate is arranged on the lower surface of the upper flange of the box steel beam section at the position corresponding to the web notch; the reinforced steel plates are positioned between the webs of the front box girder section and the rear box girder section, are attached to the lower surface of the upper flange of the box girder section, and are connected with the upper flange of the box girder section through plug welding;
a steel cover plate is respectively attached to the front side and the rear side of the web plate of the box steel beam section and spans the lower part of the web plate notch, the steel cover plate is fixedly connected with the web plate of the box steel beam section at one side of the web plate notch, and the steel cover plate is slidably connected with the web plate of the box steel beam section at the other side of the web plate notch through a friction type high-strength bolt; and all steel decking remains continuous across the full length of the broken box girder segment web.
The lower flange notch and the web notch are taken as boundaries, the fixed connection side of the concealed double-stage yield damper is a fixed side, the sliding connection side is a sliding side, and the bearing capacity of the fixed side is larger than that of the sliding side;
a rotary friction energy consumption module and a lead block shearing energy consumption module are arranged in the sliding side; in the rotary friction energy consumption module, a steel cover plate is connected with a box steel beam section web plate in a sliding manner; in the lead shearing energy consumption module, lead mounting holes are formed in webs of two box-shaped steel girder sections, lead mounting grooves matched with the lead mounting holes are formed in positions of the steel cover plates corresponding to the lead mounting holes, and shearing lead blocks are embedded in the positions of the lead mounting holes and the lead mounting grooves.
Further, in the rotational friction energy dissipation module at the sliding side, two box-shaped steel beam section webs are provided with oblique long round bolt holes suitable for rotation of the built-in double-order yield damper, the steel cover plate is provided with bolt holes at positions corresponding to the oblique long round bolt holes of the box-shaped steel beam section webs, and the two box-shaped steel beam section webs are in sliding connection with the steel cover plate through friction type high-strength bolts.
Preferably, the steel cover plate at the fixed side is connected with the box steel beam section web plate by adopting a friction type high-strength bolt; or the steel cover plate at the fixed side is welded with the box-shaped steel beam section web plate.
Preferably, friction plates can be added between the sliding side steel cover plate and the box steel beam section web plate, or friction coefficients or wear resistance of the friction surfaces can be improved by using wear plates, performing mechanical treatment, chemical treatment and the like on the friction surfaces.
As described above, the concealed dual-order yield damper combines the energy-consuming and shock-absorbing mechanisms of the friction damper and the lead shear damper, and has the following beneficial effects compared with the prior art:
(1) The built-in double-order yield damper is composed of a box-section steel beam section, a reinforced steel plate, a steel cover plate, a shearing lead block and the like, most of energy-consuming structures are hidden in the box-section steel beam section, and the damper can be installed in a beam, does not occupy building space and does not influence the beauty of a building.
(2) The concealed double-order yield damper adopts a double-web structure, and has larger bearing capacity; and the damper has larger rotation rigidity by adopting a top flange plug welding reinforcing plate mode.
(3) The energy consumption of the concealed double-order yield damper is mainly divided into two parts, wherein one part consumes energy by sliding friction between a steel beam section web plate and a steel cover plate, and the other part consumes energy by plastic hysteresis deformation generated after lead is sheared; when the deformation is small, the energy consumption can be carried out by only using the rotary friction energy consumption module, when the deformation is large, the energy consumption requirement is larger than that of the deformation when the deformation is small, and the energy consumption can be carried out by using two energy consumption modules simultaneously. The built-in damper can meet different energy consumption requirements under two deformations by setting double-order yielding.
Drawings
FIG. 1 is a schematic front view of a concealed dual stage yield damper according to the present invention;
FIG. 2 is a cross-sectional view taken along section A-A of FIG. 1;
FIG. 3 is a schematic front view of a box girder segment according to the present invention;
FIG. 4 is a schematic view of the structure of the steel cover plate according to the present invention;
fig. 5 is a cross-sectional view of section B-B of fig. 4.
Description of the reference numerals
1. Box girder section upper flange
2. Lower flange of box-shaped steel girder section
2a lower flange notch
3. Box girder section web
3a bolt hole
3b oblique long round bolt hole
3c lead mounting hole
3d web gap
4. Reinforced steel plate
5. Steel cover plate
5a lead block mounting groove
5b bolt hole
6. Shearing lead block
7. Friction type high-strength bolt
8. Center of rotation
9. Friction surface
Detailed Description
The technical scheme of the built-in double-stage yielding damper provided by the invention is further described below with reference to specific embodiments and drawings thereof. The advantages and features of the present invention will become more apparent in conjunction with the following description.
It should be noted that the embodiments of the present invention are preferred embodiments, and are not intended to limit the present invention in any way. The technical features or combinations of technical features described in the embodiments of the present invention should not be regarded as isolated, and they may be combined with each other to achieve a better technical effect. Additional implementations are also included within the scope of the preferred embodiments of the present invention and should be understood by those skilled in the art to which the embodiments of the present invention pertain.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative and not limitative. Thus, other examples of the exemplary embodiments may have different values.
The drawings of the invention are in a very simplified form and are not to scale precisely, but are for the purpose of illustrating embodiments of the invention conveniently and clearly, and are not intended to limit the scope of the invention. Any structural modification, proportional change or size adjustment should fall within the scope of the technical disclosure without affecting the effects and the achieved objects of the present invention. And the same reference numbers appearing in the figures represent the same features or elements, as may be used in different embodiments.
The structures, proportions, sizes, etc. shown in the drawings attached hereto are for illustration purposes only and are not intended to limit the scope of the invention, which is defined by the claims, but rather by the claims. Also, the terms such as "upper", "lower", "left", "right" and "a" and the like are used in the present specification for convenience of description, but are not intended to limit the scope of the present invention, and the relative changes or modifications thereof are considered to be within the scope of the present invention without substantial modification of the technical content.
Examples
As shown in fig. 1 to 5, the present invention provides a built-in dual-stage yield damper.
As shown in fig. 1 and 2, the concealed double-stage yield damper comprises a box girder section upper flange 1, a box girder section lower flange 2, two box girder section webs 3, four steel cover plates 5, a shearing lead block 6 and a plurality of friction type high-strength bolts 7. Wherein, the upper flange 1 of the box girder section and the lower flange 2 of the box girder section are arranged in parallel up and down; the two box girder section webs 3 are respectively and vertically connected between the upper flange 1 of the box girder section and the lower flange 2 of the box girder section, and the two box girder section webs 3 are arranged in parallel front and back; the box girder section upper flange 1, the box girder section lower flange 2 and the two box girder section webs 3 jointly form a box girder section.
As shown in fig. 1 and 3, the upper flange 1 of the box steel beam section is continuous in the range of the beam section, the lower flange 2 of the box steel beam section and the webs 3 of the two box steel beam sections are broken at a certain section of the steel beam section and form a gap with a certain distance; the notch formed at the lower flange 2 of the box girder section is a lower flange notch 2a, the notch formed at the web 3 of the box girder section is a web notch 3d, and the lower flange notch 2a and the web notch 3d can ensure that the concealed double-order yield damper can rotate under a middle earthquake and has enough rotation space.
As shown in fig. 1 and 2, a reinforcing steel plate 4 is disposed on the lower surface of the box girder section upper flange 1 corresponding to the position of a web notch 3d formed by the box girder section web 3, the reinforcing steel plate 4 is disposed between the front and rear box girder section webs 3 and is attached to the lower surface of the box girder section upper flange 1, and is connected with the box girder section upper flange 1 by plug welding.
Further, a steel cover plate 5 is respectively attached to the front side and the rear side of the box girder section web 3 and spans the lower part of the web gap 3d, the steel cover plate 5 is fixedly connected with the box girder section web 3 on one side of the web gap 3d through a friction type high-strength bolt 7, and the steel cover plate 5 is in sliding connection with the box girder section web 3 on the other side of the web gap 3d through the friction type high-strength bolt 7; at the same time, all steel decking 5 is continuous across the broken box girder segment web 3 over the full length.
As shown in fig. 1, the fixed connection side of the concealed dual-stage yield damper is a fixed side, and the sliding connection side is a sliding side by taking the lower flange notch 2a and the web notch 3d as boundaries; the sliding side is internally provided with a rotary friction energy consumption module and a lead block shearing energy consumption module, and the bearing capacity of the fixed side is larger than that of the sliding side; the steel cover plate 5 at the fixed side is connected with the box-shaped steel beam section web plate 3, and can be connected by adopting a friction type high-strength bolt 7, and can also be welded.
As shown in fig. 1 and 3, bolt holes 3a are formed in two box-shaped steel beam section webs 3 on the fixed side; in the rotary friction energy dissipation module at the sliding side, two box-shaped steel beam section webs 3 are provided with oblique long round bolt holes 3b which are suitable for the rotation of the concealed double-order yield damper; as shown in fig. 4, the steel deck plate 5 is provided with bolt holes 5b at bolt holes 3a and oblique oblong bolt holes 3b corresponding to the box girder segment web 3, respectively. In the invention, the number and the positions of the inclined oblong bolt holes are mainly determined according to the bearing capacity requirement of the damper.
As shown in fig. 3 and 5, in the sliding-side lead shearing energy consumption module, two box-shaped steel beam section webs 3 are provided with lead mounting holes 3c, lead mounting grooves 5a with the same shape and size are formed at corresponding positions of a steel cover plate 5, and a whole piece of shearing lead 6 is embedded at the positions of the lead mounting holes 3c and the lead mounting grooves 5 a.
The rotation friction energy consumption module of the concealed double-order yield damper provided by the invention has four friction surfaces 9, the lower flange 2a, the web notch 3d and the long round bolt hole 3b provide a space for the steel cover plate 5 and the box steel beam section web 3 to slide relatively, and the joint part of the steel cover plate 5 and the box steel beam section web 3 is the main structure part of friction energy consumption of the damper; the rotation center 8 is the position of the upper flange corresponding to the notch. Under the action of earthquake, the sliding side rotates around the rotation center 8, and the box-shaped steel beam section web 3 and the steel cover plate 5 achieve the effects of energy consumption and shock absorption through sliding friction between the box-shaped steel beam section web 3 and the steel cover plate.
In order to improve the friction coefficient or the wear resistance of the friction surface, a friction plate can be added between the friction surface formed by the steel cover plate 5 on the sliding side and the box-shaped steel beam section web 3, or a wear-resistant plate can be used, or the friction surface can be mechanically and chemically treated.
The lead block shearing energy consumption module of the concealed double-order yield damper disclosed by the invention is provided with two shearing lead blocks, and the lead block mounting holes 3c, the lead block mounting grooves 5a and the shearing lead blocks 6 form a main structural part of the damper for lead shearing energy consumption; under the action of earthquake, the shearing lead 6 is sheared by the translational steel cover plate 5 to generate plastic hysteresis deformation, thereby further improving the energy consumption and shock absorption capacity of the damper. When the earthquake action only causes small deformation of the structure, the energy consumption can be carried out by using the rotation friction energy consumption module, and when the generated deformation is larger, the energy consumption requirement is larger than that of the deformation, and the energy consumption can be carried out by using two energy consumption modules simultaneously. Therefore, the concealed damper meets different energy consumption requirements under two deformations by setting double-order yielding.
The concealed double-order yield damper takes the steel beam section with the box-shaped section as a main composition structure, can be installed in a beam, does not occupy the use space of a building, and does not influence the beautiful appearance of the building; meanwhile, the box section steel beam section has a double-web structure, so that the damper has larger bearing capacity; the main structure has higher rotational rigidity through plug welding of the reinforced steel plate, and the rigidity of the joint is improved in the elastic working stage; in addition, the damper realizes double-order yield by utilizing two energy consumption modules to consume energy, can meet different energy consumption requirements under two deformations, and has great practical value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (1)
1. An concealed double-order yield damper is characterized in that: the steel plate shearing device comprises a box girder section upper flange (1), a box girder section lower flange (2), two box girder section webs (3), a reinforced steel plate (4), four steel cover plates (5) and shearing lead blocks (6);
the upper flange (1) of the box girder section and the lower flange (2) of the box girder section are arranged in parallel up and down; the two box girder section webs (3) are respectively and vertically connected between the upper flange (1) of the box girder section and the lower flange (2) of the box girder section, and the two box girder section webs (3) are arranged in parallel front and back; the upper flange (1), the lower flange (2) and the two webs (3) of the box girder section jointly form the box girder section;
the upper flange (1) of the box girder section is kept continuous in the range of the girder section, the lower flange (2) of the box girder section and the webs (3) of the two box girder sections are disconnected at a certain section of the girder section and form a gap with a certain distance; the notch formed at the lower flange (2) of the box girder section is a lower flange notch (2 a), and the notch formed at the web (3) of the box girder section is a web notch (3 d);
a reinforced steel plate (4) is arranged on the lower surface of the upper flange 1 of the box girder section at the position corresponding to the web notch (3 d); the reinforced steel plates (4) are positioned between the front box girder section web plates (3) and the rear box girder section web plates, are attached to the lower surface of the upper flange (1) of the box girder section, and are connected with the upper flange (1) of the box girder section through plug welding;
a steel cover plate (5) is respectively attached to the front side and the rear side of the box girder section web (3) and spans the lower part of the web gap (3 d), the steel cover plate (5) is fixedly connected with the box girder section web (3) at one side of the web gap (3 d), and the steel cover plate (5) is slidably connected with the box girder section web (3) at the other side of the web gap (3 d) through a friction type high-strength bolt (7); all steel cover plates (5) are continuous in the whole length range across the broken box steel girder section web plates (3);
the lower flange notch (2 a) and the web notch (3 d) are taken as boundaries, the fixed connection side of the concealed double-stage yield damper is a fixed side, the sliding connection side is a sliding side, and the bearing capacity of the fixed side is larger than that of the sliding side;
a rotary friction energy consumption module and a lead block shearing energy consumption module are arranged in the sliding side; in the rotary friction energy consumption module, a steel cover plate (5) is in sliding connection with a box-shaped steel beam section web plate (3); in the lead shearing energy consumption module, lead mounting holes (3 c) are formed in two box-shaped steel beam section webs (3), lead mounting grooves (5 a) matched with the lead mounting holes (3 c) are formed in positions of the steel cover plates (5) corresponding to the lead mounting holes (3 c), and shearing lead blocks (6) are embedded in the positions of the lead mounting holes (3 c) and the lead mounting grooves (5 a);
in the sliding side rotary friction energy consumption module, two box-shaped steel beam section webs (3) are provided with oblique long round bolt holes (3 b) which are suitable for the rotation of the built-in double-order yield damper, a steel cover plate (5) is provided with bolt holes (5 b) at positions corresponding to the oblique long round bolt holes (3 b) of the box-shaped steel beam section webs (3), and the two box-shaped steel beam section webs (3) are in sliding connection with the steel cover plate (5) through friction type high-strength bolts (7);
the steel cover plate (5) at the fixed side is connected with the box-shaped steel beam section web plate (3) by adopting a friction type high-strength bolt (7); or (b)
The steel cover plate (5) at the fixed side is welded with the box steel girder section web (3).
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| CN201711326500.4A CN108086509B (en) | 2017-12-13 | 2017-12-13 | Concealed double-order yielding damper |
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| CN201711326500.4A CN108086509B (en) | 2017-12-13 | 2017-12-13 | Concealed double-order yielding damper |
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| CN108086509A CN108086509A (en) | 2018-05-29 |
| CN108086509B true CN108086509B (en) | 2023-06-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824921B (en) * | 2018-08-01 | 2020-03-20 | 同济大学 | Double-layer steel plate fitting type lead-viscous damping wall |
| CN113494143B (en) * | 2020-04-06 | 2022-07-08 | 同济大学 | Corrugated steel plate wall-rotating lead damper dual-function composite damping device and dual-stage anti-seismic control method thereof |
| CN114045930B (en) * | 2021-11-24 | 2023-03-21 | 国网山西省电力公司经济技术研究院 | Flange disconnection type beam column connection node |
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| JP2002115418A (en) * | 2000-10-06 | 2002-04-19 | Penta Ocean Constr Co Ltd | Friction damper for aseismatic device |
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| CN108086509A (en) | 2018-05-29 |
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