CN111877583A - Asymmetric U-shaped double-layer oblique seam steel plate damper with wave bending function - Google Patents
Asymmetric U-shaped double-layer oblique seam steel plate damper with wave bending function Download PDFInfo
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- CN111877583A CN111877583A CN202010702037.4A CN202010702037A CN111877583A CN 111877583 A CN111877583 A CN 111877583A CN 202010702037 A CN202010702037 A CN 202010702037A CN 111877583 A CN111877583 A CN 111877583A
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- steel plate
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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
Abstract
The invention relates to an asymmetric U-shaped double-layer oblique seam steel plate damper with a corrugated structure, and belongs to the technical field of energy dissipation and shock absorption of civil engineering. The metal damper consists of two U-shaped energy dissipation parts which are horizontally arranged in an opposite mode, two double-layer oblique seam steel plates, an upper cover plate and a lower cover plate. The invention breaks through the limitation of the traditional metal damper based on the design concepts of multiple insurance mechanisms, replaceable energy dissipation elements, improved shear bearing capacity, out-of-plane buckling inhibition, cooperative work of multiple shear energy dissipation mechanisms and the like. The asymmetric design of the U-shaped energy dissipation part and the combination of the oblique seam steel plate form a multiple safety mechanism, so that the problem that the damper is difficult to generate plastic energy dissipation in small earthquakes is solved; the oblique seam steel plate is subjected to multi-position yielding, the damper is stable in energy consumption performance, the shearing-resistant bearing capacity is improved, only energy consumption components need to be replaced after the shock, and the economic benefit is obvious. The metal damper is developed towards an assembly type direction, is simple and convenient to replace, has various arrangement modes, and can flexibly increase and decrease the number of energy consumption parts according to actual conditions.
Description
Technical Field
The patent relates to an asymmetric U-shaped double-layer oblique seam steel plate damper with a corrugated structure, which can be used for controlling the earthquake response of a structure, improving the earthquake resistance of a main structure and belonging to the technical field of energy dissipation and shock absorption of civil engineering.
Background
Earthquake is a natural disaster with sudden and destructive properties, and the occurrence of strong earthquake may cause huge economic loss and casualties. China is a frequently earthquake country, and most first-line cities are in earthquake areas. With the increase of the development speed of China, urban population and facilities are concentrated more and more, high-rise buildings are more and more, the traditional anti-seismic strategy is not applicable any more, and the research of novel energy dissipation damping dampers is imperative. The traditional earthquake-resistant strategy is to realize the function of resisting earthquake action by improving the strength, rigidity, ductility and other properties of the structure, and the metal energy-consuming damper is to dissipate energy by using plastic hysteresis deformation in a metal-free form. Metals are used to manufacture different types and configurations of dissipative dampers because of their good hysteresis properties after entering the plastic state and their ability to absorb a lot of energy during the elasto-plastic hysteresis deformation.
However, most of the existing metal dampers have single structures, concentrated yield points, and are not yielded when in an elastic deformation state under a small earthquake, the energy consumption of a main body structure is still needed, and the energy dissipation and shock absorption effects are poor; when the stress of the damper under heavy earthquake is larger than the yield strength, the damper wholly enters a plastic energy consumption state, and the damper is wholly destroyed after the earthquake, so that the aim of only replacing part of energy consumption components to recover the normal use function cannot be realized.
In order to solve the problems of the traditional metal damper, the invention provides an asymmetric U-shaped double-layer oblique-seam steel plate damper with wave bending based on the design concepts that multiple safety mechanisms are adopted, energy dissipation elements are replaceable, the shear-resistant bearing capacity is improved, out-of-plane buckling is restrained, multiple shear energy dissipation mechanisms work in a cooperative mode and the like. The invention utilizes the characteristics of different steel plate yield displacements at different yield points and the asymmetric design of the U-shaped energy dissipation part, can realize the energy dissipation of a multi-insurance mechanism under the action of earthquakes with different strengths, overcomes the defects of single form and concentrated yield point of the traditional metal damper, and improves the problem that the energy dissipation of a main body structure is carried out under small earthquakes while the damper does not basically participate in the energy dissipation; the U-shaped energy dissipation piece and the double-layer oblique seam steel plate are combined, so that the cooperative work of two shearing energy dissipation mechanisms is effectively realized; meanwhile, the U-shaped energy dissipation piece is connected with the upper cover plate and the lower cover plate through the high-strength bolts, so that the U-shaped energy dissipation piece is convenient to disassemble after being damaged, and the problem that the metal damper is difficult to replace after plastic deformation occurs is solved; the double-layer oblique seam steel plate is formed by connecting two steel plates with oblique seams arranged in opposite directions through self-tapping screws, and the two steel plates can be mutually constrained during deformation to inhibit out-of-plane buckling; the upper end of the steel plate is provided with the corrugated plate, and the rest part of the steel plate is provided with the oblique seam steel plate, so that the damper can be ensured not to bear vertical force basically, and the energy consumption performance is stable; due to the slotted design, the steel plate can yield in multiple positions, and the energy consumption capability of the damper is improved; the metal damper is developed towards an assembly type direction, is simple and convenient to replace, has various arrangement modes, and can flexibly increase and decrease the number of energy consumption components according to actual conditions; in addition, the novel damper is used in the shock insulation support, so that the lateral stiffness of the support can be effectively improved; the energy-saving building is arranged between two buildings, can coordinate the deformation between the two buildings, prevents collision and simultaneously fully consumes energy.
Disclosure of Invention
The invention provides an asymmetric U-shaped double-layer oblique seam steel plate damper with a corrugated edge, and aims to solve the problems that the yield point is concentrated, small earthquake cannot generate plastic energy consumption, large earthquake is integrally damaged, the whole damper needs to be replaced after earthquake, the energy consumption mechanism is single and the like in the existing metal damper structural system. This novel metal damper can realize multiple insurance mechanism, and energy consumption component is removable, and multiple shearing energy consumption mechanism collaborative work, and have good bearing capacity and energy consumption performance, can alleviate major structure and destroy, and economic benefits is obvious, can subtract shock insulation component combination with current shock insulation support etc. and use, also provides more choices for the metal damper simultaneously.
In order to achieve the purpose, the invention adopts the following technical means:
the utility model provides an asymmetric U-shaped takes double-deck oblique seam steel sheet attenuator of opening of ripples, its characterized in that: the metal damper consists of two U-shaped energy dissipation pieces which are horizontally arranged in an opposite direction, two double-layer oblique seam steel plates, an upper cover plate and a lower cover plate; the U-shaped energy dissipation part is composed of two flat straight sections and an arc section, the width-thickness ratio of the U-shaped energy dissipation part is 4-20, the ratio of the thickness to the inner diameter of the arc section is 0.03-0.2, and the length-width ratio of the flat straight sections is 2-8; the two U-shaped energy dissipation parts are the same in size except for thickness, and the thickness ratio is 1.2-2; the U-shaped energy dissipation part is welded with the double-layer oblique seam steel plate and is connected with the upper cover plate and the lower cover plate through high-strength bolts; the metal damper is provided based on design concepts such as a multiple safety mechanism, replaceable energy dissipation elements, improved shear bearing capacity, out-of-plane buckling inhibition, cooperative work of multiple shear energy dissipation mechanisms and the like, the yield strength of materials selected by each part is different, and the U-shaped energy dissipation part is asymmetrically designed, so that the purpose that parts with low yield points in the damper are subjected to yielding in a small earthquake, the parts with high yield points are still in an elastic deformation state, the energy dissipation of a main body structure is reduced, and the effect of the damper is effectively exerted; when a large earthquake occurs, all parts in the damper enter a plastic deformation stage, the U-shaped part shearing energy dissipation mechanism and the double-layer oblique seam steel plate shearing energy dissipation mechanism work cooperatively to dissipate energy together to form a multiple insurance mechanism, and the normal use function of the metal damper can be recovered only by replacing energy dissipation parts after the earthquake occurs; meanwhile, the U-shaped energy dissipation unit is connected with the upper cover plate and the lower cover plate through high-strength bolts, so that the U-shaped energy dissipation unit is convenient to disassemble after being damaged, and the problem that the metal damper is difficult to replace after plastic deformation occurs is solved.
The double-layer oblique seam steel plate is formed by connecting two steel plates with oblique seams arranged in opposite directions through self-tapping screws, under the action of a reciprocating earthquake, one layer of steel plate is pulled along the oblique seams and can provide out-of-plane support for the other layer of steel plate pressed along the oblique seams, and the steel plates and the oblique seams are mutually restrained, so that the anti-buckling effect is achieved, and the energy consumption capacity of the damper is improved; the upper end of the steel plate is provided with the corrugated plate, so that the damper can be ensured not to bear vertical force basically, and the energy consumption performance is stable; the height ratio of the wave folded plate to the slotted steel plate is 1: 4-1: 3, and the slot width of the slotted steel plate is 2-10 mm according to the design requirements of the rigidity and the strength of the damper; due to the slotted design, the steel plate can yield in multiple positions, the energy consumption capability of the damper is improved, and the damper with non-side-resisting rigidity, shearing-resisting bearing capacity and energy consumption capability can be designed by changing the width of the oblique slot; the double-layer oblique seam steel plate adopts low-yield-point steel with the yield point strength of 100-235 MPa, has good hysteretic energy consumption capability and can improve the ductility of the structure; in addition, the novel metal damper is used in the shock insulation support, so that the lateral stiffness of the support can be effectively improved; the energy-saving building is installed between two buildings, deformation between the two buildings can be coordinated, collision is prevented, meanwhile, energy is fully consumed, and the quantity can be flexibly increased and decreased according to actual conditions.
The wave folding form at the upper end of the double-layer oblique seam steel plate can adopt sine wave, triangular wave folding, trapezoidal wave folding or right-angle wave folding.
The advantages of the patent are mainly shown in the following aspects:
(1) the multiple insurance mechanism consumes energy. The yield strengths of materials selected by each part of the damper are different, and the U-shaped energy dissipation part is asymmetrically designed, so that the energy dissipation of a multi-insurance mechanism can be realized, the defect of concentrated yield points of the traditional metal damper is overcome, and the energy dissipation of a main structure is reduced under different earthquake strengths.
(2) The stress mechanism is clear. The upper end of the double-layer oblique seam steel plate is provided with a corrugated plate, so that the steel plate can be ensured not to bear vertical force basically, and pure shearing is mainly used.
(3) The steel plate slotting can realize multi-position yielding, and the shearing resistance bearing capacity and the energy consumption capacity of the damper are improved; the damper with the capabilities of not using lateral stiffness, shearing bearing capacity and energy consumption can be designed by changing the width of the oblique seam; the double-layer oblique seam steel plate is formed by connecting two steel plates with oblique seams arranged in opposite directions through self-tapping screws, under the action of a reciprocating earthquake, one layer of steel plate is pulled along the oblique seams and can provide out-of-plane support for the other layer of steel plate pressed along the oblique seams, the two layers of steel plates are mutually restrained, and the buckling prevention effect is achieved.
(4) Multiple shearing energy consumption mechanisms work in a coordinated mode. The U-shaped shearing energy consumption mechanism and the slotted steel plate shearing energy consumption mechanism together dissipate seismic energy.
(5) The welding of the double-layer oblique seam steel plate and the U-shaped energy consumption piece is completed in a factory, and the quality and the process precision of welding seams can be guaranteed.
(6) The energy consumption parts are replaceable. The U-shaped energy dissipation unit is connected with the upper cover plate and the lower cover plate through high-strength bolts, so that the U-shaped energy dissipation unit is convenient to disassemble after being damaged, and the normal use function of the metal damper can be recovered only by replacing energy dissipation parts.
(7) Can be combined with other seismic isolation and reduction elements. When the shock-proof support is used in a shock-proof support, the lateral stiffness of the support can be effectively improved; the damper is installed between two buildings, deformation between the two buildings can be coordinated, collision is prevented, energy is fully consumed, and the number of the dampers can be flexibly increased and decreased according to actual conditions.
Drawings
FIG. 1 is a three-dimensional view of an asymmetric U-shaped double-layer oblique-seam steel plate damper with wave folds;
FIG. 2 is an exploded view of an asymmetric U-shaped double-layer oblique slit steel plate damper with wave folds;
FIG. 3 is a front view of an asymmetric U-shaped double-layer oblique slit steel plate damper with wave folds;
FIG. 4 is a schematic structural view of a U-shaped energy dissipation member of an asymmetric U-shaped damper with a corrugated double-layer oblique-seam steel plate;
FIG. 5 is an exploded view of an asymmetric U-shaped double-layer oblique-seam steel plate structure with a corrugated double-layer oblique-seam steel plate damper;
FIG. 6 is a schematic view showing various types of upper end wave folding plates of a double-layer oblique-seam steel plate with a double-layer oblique-seam steel plate damper in an asymmetric U-shaped wave folding manner;
Detailed Description
Embodiments of the present invention will be described in detail below with reference to fig. 1 to 6.
As shown in fig. 1 to 6, an asymmetric U-shaped double-layer oblique slit steel plate damper with wave-folding comprises the following components:
1-U-shaped energy dissipation part;
2-arc segment;
3-straight section;
4-double-layer oblique seam steel plate;
5-high strength bolt;
6-upper cover plate;
7-lower cover plate;
8-self-tapping screw;
as shown in figures 1-6, an asymmetric U-shaped double-layer oblique seam steel plate damper with wave-folding is characterized in that: the metal damper consists of two U-shaped energy dissipation pieces (1) which are horizontally arranged in an opposite direction, two double-layer oblique seam steel plates (4), an upper cover plate (6) and a lower cover plate (7); the U-shaped energy dissipation part (1) is composed of an arc section (2) and two straight sections (3), and the thicknesses and the radiuses of the arc sections of the two U-shaped energy dissipation parts which are oppositely arranged are different, as shown in figures 4(a) and (b); the U-shaped energy dissipation component (1) is connected with the upper cover plate (6) and the lower cover plate (7) through high-strength bolts (5); the double-layer oblique seam steel plate (4) is formed by connecting two steel plates with oblique seams arranged in opposite directions through self-tapping screws (8) and is welded on a straight section of the U-shaped energy consumption piece (1), wherein the central axis of the double-layer oblique seam steel plate and the central axis of the straight section are in the same plane; the wave-shaped plate on the upper end of the double-layer oblique-seam steel plate can be selected to have a wave shape as shown in figure 6.
Claims (3)
1. The utility model provides an asymmetric U-shaped takes double-deck oblique seam steel sheet attenuator of opening of ripples, its characterized in that: the damper consists of two U-shaped energy dissipation pieces which are horizontally arranged in an opposite direction, two double-layer oblique seam steel plates, an upper cover plate and a lower cover plate; the U-shaped energy dissipation part is composed of two flat straight sections and an arc section, the width-thickness ratio of the U-shaped energy dissipation part is 4-20, the ratio of the thickness to the inner diameter of the arc section is 0.03-0.2, and the length-width ratio of the flat straight sections is 2-8; the two U-shaped energy dissipation parts are the same in size except for thickness, and the thickness ratio is 1.2-2; the double-layer oblique seam steel plate is formed by connecting two steel plates with oblique seams arranged in a reverse direction through self-tapping screws, wherein the upper end of each steel plate is a wave folding plate, the height ratio of the wave folding plate to the slotted steel plate is 1: 4-1: 3, and the slot width of the slotted steel plate is 2-10 mm; the U-shaped energy consumption piece and the double-layer oblique seam steel plate are welded to form a U-shaped energy consumption unit, and a vertical central axis of the double-layer oblique seam steel plate and a horizontal central axis of a straight section of the U-shaped energy consumption piece are required to be ensured to be in the same plane; the U-shaped energy dissipation unit is connected with the upper cover plate and the lower cover plate into a whole through high-strength bolts; the double-layer oblique seam steel plate is low yield point steel with the yield point strength of 100 MPa-235 MPa.
2. The asymmetric U-shaped corrugated steel plate damper with double-layer oblique seam opening as claimed in claim 1, wherein: the damper is arranged in the shock insulation support; or between two buildings.
3. The asymmetric U-shaped corrugated steel plate damper with double-layer oblique seam opening as claimed in claim 1, wherein: the wave folding form at the upper end of the double-layer oblique seam steel plate is selected from sine wave, triangular wave folding, trapezoidal wave folding or right-angle wave folding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010702037.4A CN111877583A (en) | 2020-07-20 | 2020-07-20 | Asymmetric U-shaped double-layer oblique seam steel plate damper with wave bending function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010702037.4A CN111877583A (en) | 2020-07-20 | 2020-07-20 | Asymmetric U-shaped double-layer oblique seam steel plate damper with wave bending function |
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| CN111877583A true CN111877583A (en) | 2020-11-03 |
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| CN202010702037.4A Pending CN111877583A (en) | 2020-07-20 | 2020-07-20 | Asymmetric U-shaped double-layer oblique seam steel plate damper with wave bending function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112900670A (en) * | 2021-01-22 | 2021-06-04 | 江南大学 | Replaceable sectional yielding metal energy dissipation damper |
| CN115059198A (en) * | 2022-07-19 | 2022-09-16 | 西安建筑科技大学 | High-performance ring spring self-resetting composite energy-consuming wall type damper and assembling method thereof |
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| JP2008121224A (en) * | 2006-11-09 | 2008-05-29 | Ss Kenkyusho:Kk | Base-isolating support |
| CN205475796U (en) * | 2016-01-19 | 2016-08-17 | 云南震安减震科技股份有限公司 | Metal attenuator is surrendered stage by stage to shearing type |
| CN205894345U (en) * | 2016-08-03 | 2017-01-18 | 云南震安减震科技股份有限公司 | Assembled multipurpose metal damper |
| CN107386748A (en) * | 2017-09-19 | 2017-11-24 | 沈阳建筑大学 | A kind of antidetonation right-angled intersection is tiltedly slotted corrugated steel shear wall |
| CN107938502A (en) * | 2017-12-04 | 2018-04-20 | 黄河水利职业技术学院 | A kind of bridge three-level vibration isolation energy dissipating support |
| CN208168023U (en) * | 2018-03-20 | 2018-11-30 | 西安建筑科技大学 | The replaceable combination energy consumption tension and compression type mild steel damper of one kind and steel plate shear force wall |
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2020
- 2020-07-20 CN CN202010702037.4A patent/CN111877583A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008121224A (en) * | 2006-11-09 | 2008-05-29 | Ss Kenkyusho:Kk | Base-isolating support |
| CN205475796U (en) * | 2016-01-19 | 2016-08-17 | 云南震安减震科技股份有限公司 | Metal attenuator is surrendered stage by stage to shearing type |
| CN205894345U (en) * | 2016-08-03 | 2017-01-18 | 云南震安减震科技股份有限公司 | Assembled multipurpose metal damper |
| CN107386748A (en) * | 2017-09-19 | 2017-11-24 | 沈阳建筑大学 | A kind of antidetonation right-angled intersection is tiltedly slotted corrugated steel shear wall |
| CN107938502A (en) * | 2017-12-04 | 2018-04-20 | 黄河水利职业技术学院 | A kind of bridge three-level vibration isolation energy dissipating support |
| CN208168023U (en) * | 2018-03-20 | 2018-11-30 | 西安建筑科技大学 | The replaceable combination energy consumption tension and compression type mild steel damper of one kind and steel plate shear force wall |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112900670A (en) * | 2021-01-22 | 2021-06-04 | 江南大学 | Replaceable sectional yielding metal energy dissipation damper |
| CN115059198A (en) * | 2022-07-19 | 2022-09-16 | 西安建筑科技大学 | High-performance ring spring self-resetting composite energy-consuming wall type damper and assembling method thereof |
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Application publication date: 20201103 |
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