CN103088932B - Anti-buckling friction support - Google Patents
Anti-buckling friction support Download PDFInfo
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- CN103088932B CN103088932B CN201110351240.2A CN201110351240A CN103088932B CN 103088932 B CN103088932 B CN 103088932B CN 201110351240 A CN201110351240 A CN 201110351240A CN 103088932 B CN103088932 B CN 103088932B
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- buckling
- friction
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- energy
- shell
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- 229910000831 Steel Inorganic materials 0.000 claims description 77
- 239000010959 steel Substances 0.000 claims description 77
- 239000002783 friction material Substances 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 8
- 241000244155 Taenia Species 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 12
- 230000009471 action Effects 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 2
- 230000000452 restraining effect Effects 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Dampers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a buckling-restrained friction support which comprises a friction energy-consuming core for consuming energy and a buckling-restrained shell for supporting, wherein the buckling-restrained shell surrounds the outer side of the friction energy-consuming core; the buckling-restrained shell is characterized in that a plurality of restraining grooves are formed in the inner side of the buckling-restrained shell along the length direction of the buckling-restrained shell, and the friction energy dissipation core is arranged on the restraining grooves in a sliding mode along the length direction of the corresponding positions of the restraining grooves. According to the buckling-restrained friction brace, the buckling-restrained shell is additionally arranged on the basis of the friction energy dissipation core, so that the stability under the conditions of high slenderness ratio and high pressure is enhanced, the problem that the ordinary friction energy dissipation brace fails due to buckling instability caused by overlarge pressure applied to the friction energy dissipation core under the action of an earthquake is solved, and the shock resistance and the reliability of a building structure adopting the friction energy dissipation brace under the action of strong earthquake are improved.
Description
Technical field
The present invention relates to a kind of anti-buckling friction support (BRFB) be made up of friction core and anti-buckling shell, be mainly used in building structure energy-dissipating and shock-absorbing field.
Background technology
Traditional design of building structures mainly relies on the intensity of building structure self, rigidity, ductility and energy dissipation capacity to resist the effect of load.Earthquake shows, under violent earthquake effect, building structure main body is often damaged or even the damage and fracture of unrepairable, and the loss caused is huge.Carry out earthquake energy by the passive energy-dissipating device arranged in building structure, greatly can alleviate the deformation and damage of building structure.Frcition damper is as a kind of energy-dissipating device, and because its energy dissipation capacity is strong, and load, frequency are little to its performance impact consumed energy, and have simple structure, and draw materials easily, cheap advantage, thus has good application prospect.Particularly in near-fault ground motion reaction and middle-high building structural seismic response, has unique advantage in control building structure.
Frcition damper to the mechanism that vibration isolation is carried out in building structure is: produce slippage or distortion under the pre-constant load of damper before the component surrender of main building structure, rely on Friction dissipation seismic energy, simultaneously, because after building structure distortion, natural vibration period lengthens, reduce Seismic input, thus reach reduction earthquake to the impact of building structure.Frcition damper has good energy dissipation capacity, its energy dissipation behavior also less impact by load amplitude, frequency and the number of occurrence simultaneously.
Frcition damper is as a kind of energy-dissipating and shock-absorbing technology, its frictional force size is easy to control, regulating friction force can be carried out conveniently by adjustment pretightning force size, its performance to environment temperature and frictional heat insensitive, and because of its have that energy dissipation capacity is strong, stable performance, cheap advantage, be easy to apply in engineering.But also there is certain shortcoming in frcition damper in engineering is applied, first, the bi-material of phase mutual friction, under constant positive pressure, keeps long-term quiet contact, cold bonding knot can be produced or condensation solid, so friction factor therebetween can change; Secondly, frcition damper is arranged in frame supported usually, forms frictional damping energy dissipation brace, but the setting supported brings again new problem, and first Joint's connection fabrication is complicated, and it two is that the improper flexing of frcition damper that may cause of supported design lost efficacy.
Summary of the invention
For the above-mentioned defect of prior art, the technical problem to be solved in the present invention is, a kind of frcition damper preventing flexing be applied on building unit is provided, and the energy that the earthquake that can effectively dissipate produces, improve the Seismic Resistance And Disaster Reduction ability of building structure, reduce casualties and property loss that earthquake brings to greatest extent.
For solving the problems of the technologies described above, the invention provides a kind of anti-buckling friction support, the anti-buckling shell for supporting comprising the friction energy-dissipating core for consuming energy and be enclosed in outside described friction energy-dissipating core;
The inner side of described anti-buckling shell is provided with multiple restraint slot along its length, and described friction energy-dissipating core and described restraint slot corresponding section are slidably installed in described restraint slot along its length.
As preferably, described friction energy-dissipating core comprises the multi-disc steel plate overlapped together, and is provided with friction material between adjacent two panels steel plate, and described friction material is attached to wherein on a slice steel plate.
As preferably, described friction energy-dissipating core comprises two panels second steel plate and is clipped in a slice first steel plate between described two panels second steel plate, and the two sides of described first steel plate is all with friction material; Length direction along described first steel plate is provided with bar shaped chute, and described two panels second steel plate is provided with relative multiple connecting holes; Described friction energy-dissipating core is by being connected with multiple connectors of bar shaped chute through described connecting hole.
As preferably, described anti-buckling shell is quadrangular shape, the inner side on every limit is respectively equipped with " V " shape restraint slot of opening towards friction energy-dissipating core, and the rib that the second steel plate of described friction energy-dissipating core is relative with described " V " shape restraint slot to be stuck in described " V " shape restraint slot and can to slide along its length.
As preferably, the one or both ends of described connector are arranged with spring.
As preferably, described spring is disk spring.
As preferably, the inwall of described restraint slot is provided with Teflon material coating.
As preferably, described first steel plate is fixedly connected with many purlins in the one side of adhering to friction material, and the height that described purlin protrudes from described first steel plate is less than the thickness of described friction material.
As preferably, described purlin comprises horizontal stripe and many taeniaes perpendicular to described first steel plate length direction that many are parallel to described first steel plate length direction, described taeniae and horizontal stripe form multiple closed grid, and described friction material is positioned at multiple described grid.Compared with prior art, anti-buckling friction support of the present invention at least has following beneficial effect:
1, anti-buckling friction support of the present invention by adding anti-buckling shell on the basis of friction energy-dissipating core, strengthens the stability under high slenderness ratio and large pressure condition.
2, anti-buckling friction support of the present invention according to building structure needs, can regulate the size of pretightning force by adjusting connector and spring, with satisfied different building structure to the requirement of damping capacity.
3, anti-buckling friction support of the present invention has that structure is simple, easy, cheap advantage of drawing materials.
4, the applicability of anti-buckling friction support of the present invention is strong, and its profile can need adjustment flexibly according to design, and its adjustable region is comparatively large, all has good energy consumption effect in various situation simultaneously.
5, anti-buckling friction support good endurance of the present invention, very little by external environment influence such as temperature, and weatherability is strong, is suitable for region wide.Anti-buckling friction support of the present invention, improves the Seismic Resistance And Disaster Reduction ability of building building structure, reduces the casualties brought of earthquake and property loss to greatest extent, reduces the economy and society impact that earthquake brings.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of the anti-buckling friction support of embodiments of the invention one;
Fig. 2 is the front view of the wiping power consumption core in the anti-buckling friction support shown in Fig. 1;
Fig. 3 along A-A to sectional view;
Fig. 4 is the structural representation of the first steel plate in the friction energy-dissipating core shown in Fig. 2 and Fig. 3;
Fig. 5 is the structural representation of the steel plate in the friction energy-dissipating core of Fig. 2 and Fig. 3;
The structural representation of first connector of Fig. 6 for being connected with the second steel plate in the anti-buckling friction support shown in Fig. 1;
Fig. 7 is schematic side view when the anti-buckling friction support shown in Fig. 1 is connected with the first connector (or link of the first steel plate) for the second connector be connected with building unit;
Fig. 8 is the top view of Fig. 7;
Fig. 9 is the top view (or upward view) of the anti-buckling friction support of embodiments of the invention one;
Figure 10 is the structural representation of the first steel plate in the anti-buckling friction support of embodiments of the invention two;
Figure 11 is structural representation when the first steel plate shown in Figure 10 does not adhere to friction material.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
Embodiment one
As Figure 1-Figure 5, the anti-buckling friction support (Buckling-Restrained Friction Brace is called for short BRFB) of embodiments of the invention one, comprises the anti-buckling shell 4 for supporting and the friction energy-dissipating core 100 being positioned at anti-buckling shell 4; In the present embodiment, friction energy-dissipating core 100 comprises two panels second steel plate 2 and is clipped in a slice first steel plate 1 between described two panels second steel plate 2, and the two sides of described first steel plate 1 is all with friction material 3; Length direction along described first steel plate 1 is provided with bar shaped chute 12, and two panels second steel plate 2 is provided with relative multiple connecting holes 21; Described friction energy-dissipating core 100 is by being connected with multiple connectors 6 of bar shaped chute 12 through described connecting hole 21, in the present embodiment, connector 6 is bolt, and other connector certainly can also be adopted to connect, and the quantity of connector 6 can be arranged according to actual conditions.Achieved a fixed connection between two panels second steel plate 2 by connector 6, connector 6 is slidably connected with its realization through the bar shaped chute 12 on the first steel plate 1, so just realizing between the second steel plate 2 and the first steel plate 1 can relative sliding, thus does negative work and earthquake energy by friction material therebetween.
The inner side of described anti-buckling shell 4 is provided with multiple restraint slot 41, the anti-buckling shell 4 of the present embodiment is quadrangular shape, the inner side of its four sides is respectively equipped with a restraint slot 41, in this enforcement, restraint slot 41 is opening " V " shape towards friction energy-dissipating core 100, the shape of certain restraint slot 41 is shapes according to friction energy-dissipating core 100 and fixed, as long as it can be able to be allowed to slide along its length in the motion of the length direction limiting friction power consumption core 100 perpendicular to friction energy-dissipating core 100.As shown in Figure 1, the rib relative with restraint slot 41 of outermost second steel plate 2 of friction energy-dissipating core 100 is stuck in described restraint slot 41, and can slide along the length direction of restraint slot 41.It should be noted that, steel plate in friction energy-dissipating core 100 can be more multi-disc, as long as the relative side of adjacent two steel plates is with friction material, certain conduct is preferred, in the present embodiment, the both sides of the first steel plate 1 are all with friction material, and the both sides of such second steel plate 2 do not need attachment friction material.In addition, in order to reach anti-buckling effect, the material that anti-buckling shell 4 adopts the intensity that can bear larger pressure higher is made, as No. 45 steel of GB/T699-1999 defined.Material is thus formed the anti-buckling shell 4 of tubular, 100, friction energy-dissipating core in the inner.
The structure of the friction energy-dissipating core 100 in the anti-buckling friction support of the present embodiment is further illustrated below in conjunction with Fig. 1-5.As shown in Figure 1, Figure 2 and Figure 3, the friction energy-dissipating core 100 of the present embodiment comprises two panels second steel plate 2 and is clipped in the first steel plate 1 between the second steel plate 2, and as shown in Figure 4, the both sides of the first steel plate 1 are all with friction material 3, friction material 3 can select sticky heavy-duty friction material, as resin Weaving type brake ribbon or copper-base friction plate.As shown in Figure 4, one end of the first steel plate 1 is the link 15 of handle shape, sees description below about link 15 and the connection of building unit.
As shown in Figure 2 and Figure 5, one end of second steel plate 2 is provided with multiple hole 22, for being connected with the first junction plate 7 as shown in Figure 6, as shown in Figure 6, first junction plate 7 is provided with the multiple holes 71 corresponding with the hole 22 on the second steel plate 2, first junction plate 7 is provided with the one end in hole 71 and bolt, rivet etc. can be adopted to be connected with between two the second steel plates 2, and the shape of the other end of the first junction plate 7 is the handle shape identical with the link 15 of the first steel plate 1.As shown in Figure 2, the first steel plate 1 link being provided with handle shape and one end that the second steel plate 2 is connected with the first junction plate 7 lays respectively at the two ends of friction energy-dissipating core 100.As shown in Figure 7, Figure 8, wherein one end of the anti-buckling friction support of the present embodiment is connected with building unit by the second junction plate 8 be connected on the link 15 of the first steel plate 1.Connection between first steel plate 1 and the second junction plate 8 as shown in Figure 7, Figure 8, second junction plate 8 is plate-like piece, the link 15 of the first steel plate 1 is welded on the second junction plate 8, second junction plate 8 of tabular is connected by concreting with building unit, wherein the second junction plate 8 offers multiple connecting hole 82 that can be used for carrying out with the reinforcing bar on building unit being connected.As shown in Figure 7, Figure 8, in order to strengthen the bonding strength between the second junction plate 8 and the link 15 of the first steel plate 1, ribs 83 can also be welded between the first steel plate 1 with the second junction plate 8.The other end of the anti-buckling friction support of the present embodiment is connected with the first junction plate 7, connection between first junction plate 7 with the second junction plate 8 is identical with the connection between the first steel plate and the second junction plate 8, repeat no more, namely second junction plate 8 wherein by tabular between one end of the anti-buckling friction support of the present embodiment is connected with building unit, and the other end is connected with building unit by the second junction plate 8 of tabular by the first junction plate 7 transition again.
As shown in Figure 9, enter in anti-buckling shell 4 to prevent dust, cap 46 can also be provided with at the two ends of anti-buckling shell 4, cap 46 offers the bar hole 461 passed through for the link 15 of the first steel plate 1 or the link 15 of the first junction plate 7, such friction energy-dissipating core 100 is positioned at closed anti-buckling shell 4, prevent dust from invading and harassing, improve its working life.
Compared with prior art, anti-buckling friction support of the present invention by adding anti-buckling shell 4 on the basis of friction energy-dissipating core 100, pressure is born by anti-buckling shell 4, strengthen the stability under high slenderness ratio and large pressure condition, solve the excessive and problem that occurs lateral deflection unstable phenomenon and cause energy dissipation brace to lose efficacy of pressure that common friction damped braced may be subject to because of friction energy-dissipating core 100 under geological process, improve the shock resistance and reliability that adopt the building structure of friction damped braced under severe earthquake action.
As shown in Figure 1, as preferably, in the present embodiment, the two ends of connector 6 are all arranged with spring 5.Certainly, also only spring 5 can be established at one end card of connector 6 in order to easy for installation.Preferably, disk spring selected by the spring 5 in the present embodiment, and those skilled in the art can select other forms of spring, according to actual needs as wind spring etc.Apply pretightning force by multiple connector 6 and spring 5 pairs of steel plates, make it to produce frictional force when relative sliding, and then earthquake energy.
Preferably, in the present embodiment, the inwall of the restraint slot 41 shown in Fig. 1 is also provided with Teflon material, can plays and reduce contact surface friction, the effect of isolating metal Contact bonding, in order to avoid bond between anti-buckling shell 4 and friction energy-dissipating core 100.
Embodiment two
As shown in Figure 10, Figure 11, embodiment two is with the difference of embodiment one, first steel plate 1 is fixedly connected with many purlins in the one side of adhering to friction material 3, the height that purlin protrudes from described first steel plate is slightly less than the thickness of friction material 3, as long as reserve the deformation space that precompression produces.
In the present embodiment, purlin can for being welded on the reinforcing bar on the first steel plate 1 surface, before first steel plate 1 adheres to friction material 3, first weld purlin, and then adhere to friction material 3 on the surface at the first steel plate 1, purlin can help friction material 3 to bear compressive stress and shear stress, avoids friction material 3 to produce under large precompression effect and comes off or be extruded.As shown in figure 11, in this enforcement, purlin comprises horizontal stripe 191 and many taeniaes 192 perpendicular to the first steel plate length direction that many are parallel to the first steel plate 1 length direction, horizontal stripe 191 and taeniae 192 form multiple closed grid, the friction material 3 be attached on the first steel plate 1 surface is equipped with in each grid, under stress, friction material 3 in grid is in three dimension stress state, increase substantially the compressive property of friction material, make the pressure that can bear of frcition damper larger, performance is more stable.Preferably; as shown in figure 11; in the present embodiment; purlin comprises two horizontal stripes 191 arranging along the edge of described first steel plate 1 respectively and respectively along two horizontal stripes 191 that the edge of the bar shaped chute 12 on the first steel plate 1 is arranged; article four, horizontal stripe 191 and many taeniaes 192 perpendicular to horizontal stripe 191 form the grid of multiple closed rectangle; the friction material 3 be attached to like this on the first steel plate 1 is just positioned among the encirclement of purlin completely, and purlin can provide comprehensive resistance to compression to protect for friction material 3.Certainly, those skilled in the art can also form purlin the grid of other shapes, can realize object of the present invention too.
Certainly, the above is the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (7)
1. an anti-buckling friction support, is characterized in that, the anti-buckling shell for supporting comprising the friction energy-dissipating core for consuming energy and be enclosed in outside described friction energy-dissipating core;
The inner side of described anti-buckling shell is provided with multiple restraint slot along its length, described friction energy-dissipating core and described restraint slot corresponding section are slidably installed in described restraint slot along its length, described friction energy-dissipating core comprises two panels second steel plate and is clipped in a slice first steel plate between described two panels second steel plate, and the two sides of described first steel plate is all with friction material; Length direction along described first steel plate is provided with bar shaped chute, and described two panels second steel plate is provided with relative multiple connecting holes;
Described friction energy-dissipating core is by being connected with multiple connectors of bar shaped chute through described connecting hole.
2. anti-buckling friction support as claimed in claim 1, it is characterized in that, described anti-buckling shell is quadrangular shape, the inner side on every limit is respectively equipped with " V " shape restraint slot of opening towards friction energy-dissipating core, and the rib that the second steel plate of described friction energy-dissipating core is relative with described " V " shape restraint slot to be stuck in described " V " shape restraint slot and can to slide along its length.
3. anti-buckling friction support as claimed in claim 1 or 2, is characterized in that, the one or both ends of described connector are arranged with spring.
4. anti-buckling friction support as claimed in claim 3, is characterized in that, described spring is disk spring.
5. anti-buckling friction support as claimed in claim 1 or 2, is characterized in that, the inwall of described restraint slot is provided with Teflon material coating.
6. anti-buckling friction support as claimed in claim 1 or 2, is characterized in that, described first steel plate is fixedly connected with many purlins in the one side of adhering to friction material, and the height that described purlin protrudes from described first steel plate is less than the thickness of described friction material.
7. anti-buckling friction support as claimed in claim 6, it is characterized in that, described purlin comprises horizontal stripe and many taeniaes perpendicular to described first steel plate length direction that many are parallel to described first steel plate length direction, described taeniae and horizontal stripe form multiple closed grid, and described friction material is positioned at multiple described grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110351240.2A CN103088932B (en) | 2011-11-08 | 2011-11-08 | Anti-buckling friction support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110351240.2A CN103088932B (en) | 2011-11-08 | 2011-11-08 | Anti-buckling friction support |
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| Publication Number | Publication Date |
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| CN103088932A CN103088932A (en) | 2013-05-08 |
| CN103088932B true CN103088932B (en) | 2015-10-28 |
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| CN201110351240.2A Expired - Fee Related CN103088932B (en) | 2011-11-08 | 2011-11-08 | Anti-buckling friction support |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106760018B (en) * | 2016-12-30 | 2022-08-09 | 上海堃熠工程减震科技有限公司 | Support type anti-buckling low-relaxation friction type anti-seismic damper |
| CN106812365A (en) * | 2017-02-17 | 2017-06-09 | 清华大学 | Framework frcition damper and the frame joint with it |
| CN107023208B (en) * | 2017-05-17 | 2019-07-19 | 大连大学 | Anti-buckling support |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4633628A (en) * | 1985-10-31 | 1987-01-06 | University Of Utah | Device for base isolating structures from lateral and rotational support motion |
| CN1048577A (en) * | 1990-08-02 | 1991-01-16 | 魏庆礼 | Frictional energy consumption type antiseismic structure |
| CN201687219U (en) * | 2010-05-31 | 2010-12-29 | 哈尔滨工业大学 | Self-resetting anti-bending bracing member |
| CN102051925A (en) * | 2009-11-04 | 2011-05-11 | 青岛理工大学 | Memory alloy shock absorption control device |
| CN202007465U (en) * | 2010-12-30 | 2011-10-12 | 陈明中 | Novel supporting anti-seismic energy consumer |
| CN202380602U (en) * | 2011-11-08 | 2012-08-15 | 建研科技股份有限公司 | Anti-bending friction support |
-
2011
- 2011-11-08 CN CN201110351240.2A patent/CN103088932B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4633628A (en) * | 1985-10-31 | 1987-01-06 | University Of Utah | Device for base isolating structures from lateral and rotational support motion |
| CN1048577A (en) * | 1990-08-02 | 1991-01-16 | 魏庆礼 | Frictional energy consumption type antiseismic structure |
| CN102051925A (en) * | 2009-11-04 | 2011-05-11 | 青岛理工大学 | Memory alloy shock absorption control device |
| CN201687219U (en) * | 2010-05-31 | 2010-12-29 | 哈尔滨工业大学 | Self-resetting anti-bending bracing member |
| CN202007465U (en) * | 2010-12-30 | 2011-10-12 | 陈明中 | Novel supporting anti-seismic energy consumer |
| CN202380602U (en) * | 2011-11-08 | 2012-08-15 | 建研科技股份有限公司 | Anti-bending friction support |
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