CN203594126U - Steel shear plate damper with thickness varied in shape of quadratic parabola - Google Patents
Steel shear plate damper with thickness varied in shape of quadratic parabola Download PDFInfo
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- CN203594126U CN203594126U CN201320620998.6U CN201320620998U CN203594126U CN 203594126 U CN203594126 U CN 203594126U CN 201320620998 U CN201320620998 U CN 201320620998U CN 203594126 U CN203594126 U CN 203594126U
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- shear plate
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 13
- 239000010959 steel Substances 0.000 title claims abstract description 13
- 210000003141 Lower Extremity Anatomy 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000004364 calculation method Methods 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
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Abstract
The utility model relates to a steel shear plate damper with thickness varied in the shape of quadratic parabola. The steel shear plate damper comprises an upper connecting piece, a lower connecting piece, a shear plate and a bolt, wherein the shear plate is welded on the upper connecting piece and the lower connecting piece, and the shear plate varies in the shape of quadratic parabola in the thickness direction. The aspect ratio of the shear plate satisfies 0.8<b/t<2.4, the width-thickness ratio satisfies 20<b/t<50, and the variation coefficient of the cross section satisfies T/t>=1.8, wherein h represents the height of the shear plate, b represents the width of the shear plate, t represents the thickness of the central thin portion of the shear plate, and the T represents the thickness of the upper and lower edges of the shear plate. Since the upper and lower cross sections are reinforced and the central cross section is weakened, the yielding of cross section in the central weak portion approaches to the total cross section yielding, and an excellent plasticity developing process is ensured. The generalized yielding load of the damper satisfies the theory under pure shear hypothesis, and better hysteresis displacement and shearing resistance are ensured.
Description
Technical field
The utility model relates to the steel shear plate damper that a kind of thickness changes with second-degree parabola.
Background technology
How under geological process, to survive better and to keep as much as possible original design function, field of civil engineering studying and the energy-dissipating and shock-absorbing ability of using structure on a large scale for structure.Be different from traditional structure and rely on the elastic-plastic deformation of primary structure member itself to consume energy, present stage structure use more damper to consume energy.Present stage, damper is mainly divided into viscous-damping type and hysteresis attenuation type, and the former mainly utilizes distortion hysteresis consumed energy, and the latter mainly utilizes the resistant function of the viscoid relevant with speed.Soft steel shearing plate damper is a kind of metal elastic plasticity hysteresis type damper, and its hysteretic energy ability is strong, plastic deformation development is desirable, damage easily detects, design and easy for installation, and development in recent years and application are rapidly.The core dissipative member of soft steel shearing plate damper is a mild steel plain plate, by scientifically design and layout, makes mild steel plate that shear elastic-plastic distortion occur under lateral forces, and shearing force is provided.At present its cross section of the main hypothesis of the shearing resistance research of shear plate is evenly surrendered, and actual tests result and results of numerical model calculation all show this dull and stereotyped stress state often four angle point generation stress concentrate and shift to an earlier date diagonal angle destroy, actual broad sense surrender shearing force, also lower than theoretical calculation formula, brings certain error to research and design.
Summary of the invention
For solve classic flat-plate shear plate damper four angle points easily occur stress concentrate, and actual surrender lateral resisting and Theoretical Design formula have the problem of larger error, the purpose of this utility model is to propose the steel shear plate damper that a kind of thickness changes with second-degree parabola.This damper can be similar to the middle weakness generation total cross-section shear yielding of regarding as at core Wasted-energy steel plate.
For achieving the above object, the technical solution of the utility model is as follows:
The steel shear plate damper that a kind of thickness changes with second-degree parabola, comprise upper connector, lower connector, shear plate and bolt, the upper lower limb thickness of described shear plate is fixed by welding on upper connector and lower connector, described shear plate is second-degree parabola deformation on thickness direction, the depth-width ratio of described shear plate is 0.8 < h/b < 1.5, flakiness ratio is 20 < b/t < 50, coefficient of variation T/t >=1.8, cross section, wherein h is shear plate height, b is shear plate width, t is the weak thickness of section of shear plate intermediate thin, T is the thickness in thickness, shear plate edge.
Compared with prior art, the utlity model has following outstanding advantage:
The first, strengthen the cross section of upper and lower both sides stress concentration point, avoid the destruction in advance of shear plate angle point; Second, by second-degree parabola deformation cross section, make shear plate have clear and definite stressed plane of weakness, stressed yield situation more approaches existing calculated value, can see that by results of numerical model calculation shear plate is almost the banded surrender that connects at intermediate cross-section place; The 3rd, shear plate thickness direction adopts second-degree parabola deformation and non-rectilinear has been avoided the concentrated problem of stress, and damper has better shearing lag return energy dissipation capacity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model damper.
Fig. 2 is the top view of the utility model damper.
Fig. 3 is the shear plate schematic diagram of the utility model damper.
The specific embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1 to Figure 3, the steel shear plate damper that a kind of thickness changes with second-degree parabola, comprise upper connector 1, lower connector 2, shear plate 3 and bolt 4, the upper lower limb thickness of described shear plate 3 is fixed by welding on upper connector 1 and lower connector 2, described shear plate 3 is second-degree parabola deformation on thickness direction, the depth-width ratio of described shear plate 3 is 0.8 < h/b < 1.5, flakiness ratio is 20 < b/t < 50, coefficient of variation T/t >=1.8, cross section, wherein h is shear plate 3 height, b is shear plate 3 width, t is the weak thickness of section of shear plate 3 intermediate thin, T is the thickness in shear plate 3 thickness, edge.
By steel shear plate is carried out to Parametric Analysis, find as the ratio of width to height 0.8 < h/b < 1.5, flakiness ratio 20 < b/t < 50, coefficient of variation T/t >=1.8 o'clock, cross section, low all CYCLIC LOADING mechanical property optimums of this damper.Definition broad sense yield load, in the segment displacement of degenerating rapidly at damper stiffness, the corresponding load of this segment displacement mid point.The elastic shear rigidity of this damper is:
, wherein G is modulus of shearing.Respectively there is the connector of thickness 40mm on the upper and lower both sides of this damper.Lower connector 2 is connected with vertical junction plate, make lower connector 2 can with support fixed.Between upper connector 1 and beam, adopt bolt 4 to be connected.
Claims (1)
1. the steel shear plate damper that thickness changes with second-degree parabola, comprise upper connector (1), lower connector (2), shear plate (3) and bolt (4), the upper lower limb thickness of described shear plate (3) is fixed by welding on upper connector (1) and lower connector (2), it is characterized in that, described shear plate (3) is second-degree parabola deformation on thickness direction, the depth-width ratio of described shear plate (3) is 0.8 < h/b < 1.5, flakiness ratio is 20 < b/t < 50, coefficient of variation T/t >=1.8, cross section, wherein h be shear plate (3) highly, b is shear plate (3) width, t is the weak thickness of section of shear plate (3) intermediate thin, T is the thickness in shear plate (3) thickness, edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320620998.6U CN203594126U (en) | 2013-10-10 | 2013-10-10 | Steel shear plate damper with thickness varied in shape of quadratic parabola |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320620998.6U CN203594126U (en) | 2013-10-10 | 2013-10-10 | Steel shear plate damper with thickness varied in shape of quadratic parabola |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594126U true CN203594126U (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320620998.6U Expired - Fee Related CN203594126U (en) | 2013-10-10 | 2013-10-10 | Steel shear plate damper with thickness varied in shape of quadratic parabola |
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| CN (1) | CN203594126U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217751A (en) * | 2017-06-03 | 2017-09-29 | 福州大学 | Variation rigidity wind-resistant support and its installation method for Seismic Isolation of Isolation Layer |
| CN110005094A (en) * | 2019-04-12 | 2019-07-12 | 北京交通大学 | A kind of parting waves Fill model |
| CN111783332A (en) * | 2020-06-12 | 2020-10-16 | 广西大学 | Finite element simulation method for vibration accumulation deformation of material with characteristics of compression hardness nonlinear change and shear shrinkage sudden change |
-
2013
- 2013-10-10 CN CN201320620998.6U patent/CN203594126U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217751A (en) * | 2017-06-03 | 2017-09-29 | 福州大学 | Variation rigidity wind-resistant support and its installation method for Seismic Isolation of Isolation Layer |
| CN110005094A (en) * | 2019-04-12 | 2019-07-12 | 北京交通大学 | A kind of parting waves Fill model |
| CN111783332A (en) * | 2020-06-12 | 2020-10-16 | 广西大学 | Finite element simulation method for vibration accumulation deformation of material with characteristics of compression hardness nonlinear change and shear shrinkage sudden change |
| CN111783332B (en) * | 2020-06-12 | 2022-10-21 | 广西大学 | Finite element simulation method for vibration accumulation deformation of compression non-linear change and shear sudden change characteristic material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20151010 |
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| EXPY | Termination of patent right or utility model |