CN213805856U - Double-step sliding friction pendulum shock insulation support - Google Patents
Double-step sliding friction pendulum shock insulation support Download PDFInfo
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- CN213805856U CN213805856U CN202022688055.XU CN202022688055U CN213805856U CN 213805856 U CN213805856 U CN 213805856U CN 202022688055 U CN202022688055 U CN 202022688055U CN 213805856 U CN213805856 U CN 213805856U
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Abstract
The utility model belongs to the technical field of building isolation bearing, a friction pendulum isolation bearing slides in two steps is disclosed. The main technical characteristics are as follows: including upper bracket board, undersetting board, upper bracket board, undersetting board between be provided with middle slide, spherical crown welt, slide in the middle of down, first sliding friction is vice, second sliding friction is vice, third sliding friction is vice, fourth sliding friction is vice, first sliding friction is vice the same with the vice coefficient of friction of fourth sliding friction, second sliding friction is vice the same with the vice coefficient of friction of third sliding friction, first sliding friction is vice to be greater than the vice coefficient of friction of second sliding friction with the vice coefficient of friction of third sliding friction with the vice coefficient of friction of fourth sliding friction. The utility model provides a pair of two-step friction pendulum isolation bearing that slides accomplishes that little shake consumes energy, big power consumption of shaking greatly. After the shock insulation effect in small and medium earthquakes is improved, the displacement of the structure in rare earthquakes can be effectively reduced.
Description
Technical Field
The utility model belongs to the technical field of building isolation bearing, especially, relate to a friction pendulum isolation bearing slides in two steps.
Background
The friction pendulum vibration isolation support has the advantages of simple structure, simple parameters, stable performance, strong durability, convenient control of product quality, no influence of dynamic load on the period and the like, and the engineering application is more and more extensive. But the friction pendulum vibration isolation support also has the defect of relatively poor vibration isolation performance under small and medium earthquakes. In order to solve the problem that the rubber shock insulation support has poor shock insulation performance under small and medium shocks, experts and scholars at home and abroad make continuous efforts for many years, so that the shock insulation performance of the rubber shock insulation support is greatly improved. How to solve the problem of the shock insulation effect of the friction pendulum shock insulation support under small and medium shocks is the key point of attention of experts and scholars at present. At present, although there are related researches, some technologies are complex, some technical schemes have important defects, and the application is not successful.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a can adapt to different earthquake grade demands, can improve the shock insulation effect of little shake and well shake, the double rank friction pendulum isolation bearing that slides of the too big problem of displacement of structure when can avoiding big shake again.
In order to solve the technical problem, the utility model discloses a technical scheme does: the spherical cap lining plate comprises an upper support plate and a lower support plate, wherein an upper middle sliding plate, a spherical cap lining plate and a lower middle sliding plate are arranged between the upper support plate and the lower support plate, the top surface of the upper support plate is a first plane, the bottom surface of the upper support plate is a first concave surface, a first stainless steel sliding plate is arranged in the first concave surface, the top surface of the upper middle sliding plate is a first convex surface matched with the first concave surface, a first boss is arranged on the first convex surface, a first spherical tetrafluoro plate is arranged in the first boss, and the first stainless steel sliding plate and the first spherical tetrafluoro plate form a first sliding friction pair; the bottom surface of the upper middle sliding plate is a second concave surface, a second stainless steel sliding plate is arranged in the second concave surface, the edge of the second concave surface is provided with a first restraint ring matched with the spherical crown lining plate, the upper part of the spherical crown lining plate is provided with a first buffer ring, the first buffer ring is matched with the first restraint ring, the top surface of the spherical crown lining plate is a second convex surface matched with the second concave surface, the second convex surface is provided with a second boss, a second spherical tetrafluoro plate is arranged in the second boss, and the second stainless steel sliding plate and the second spherical tetrafluoro plate form a second sliding friction pair; the bottom surface of the spherical crown lining plate is a third convex surface, the third convex surface is provided with a third boss, a third spherical tetrafluoro plate is arranged in the third boss, the lower part of the spherical crown lining plate is provided with a second buffer ring, the top surface of the lower middle sliding plate is a third concave surface matched with the third convex surface, a third stainless steel sliding plate is arranged in the third concave surface, the third stainless steel sliding plate and the third spherical tetrafluoro plate form a third sliding friction pair, the edge of the third concave surface is provided with a second constraint ring matched with the spherical crown lining plate, and the second buffer ring is matched with the second constraint ring; the bottom surface of the lower middle sliding plate is a fourth convex surface, the fourth convex surface is provided with a fourth boss, a fourth spherical tetrafluoro plate is arranged in the fourth boss, the top surface of the lower support plate is a fourth concave surface matched with the fourth convex surface, a fourth stainless steel sliding plate is arranged in the fourth concave surface, the fourth stainless steel sliding plate and the fourth spherical tetrafluoro plate form a fourth sliding friction pair, and the bottom surface of the lower support plate is a second plane; the friction coefficients of the first sliding friction pair and the fourth sliding friction pair are the same, the friction coefficients of the second sliding friction pair and the third sliding friction pair are the same, and the friction coefficients of the first sliding friction pair and the fourth sliding friction pair are larger than the friction coefficients of the second sliding friction pair and the third sliding friction pair.
The utility model provides a pair of two-step friction pendulum isolation bearing that slides, spherical cap welt and last middle slide are the spherical contact, and second sliding friction is vice for second sliding friction is constituteed to second stainless steel slide, second sphere tetrafluoro plate, and spherical cap welt is the spherical contact with lower middle slide, and third sliding friction is vice for third sliding friction is constituteed to third stainless steel slide, third sliding friction is vice, and second sliding friction is vice the same with the vice coefficient of friction of third sliding friction, and first order compound pendulum formula friction pendulum support is constituteed with last middle slide, spherical cap welt and lower middle slide to spherical cap welt. The upper bracket board is in spherical contact with the upper middle sliding plate, the first stainless steel sliding plate and the first spherical tetrafluoro plate form a first sliding friction pair, the lower support board is in spherical contact with the lower middle sliding plate, the fourth stainless steel sliding plate and the fourth spherical tetrafluoro plate form a fourth sliding friction pair, the friction coefficient of the first sliding friction pair is the same as that of the fourth sliding friction pair, the friction coefficient of the first sliding friction pair and the fourth sliding friction pair is greater than that of the second sliding friction pair and the third sliding friction pair, the upper bracket board and the upper middle sliding plate, the lower support board and the lower middle sliding plate form a second step complex pendulum type friction pendulum support.
The utility model provides a friction pendulum isolation bearing slides in two ranks comprises two compound pendulum formula friction pendulum isolation bearing of establishing ties by upper bracket board, upper middle slide, spherical crown welt, lower middle slide, undersetting board. The upper support plate is provided with a mounting hole connected with the upper structure, and the lower support plate is provided with a mounting hole connected with the lower structure. The displacement of the second sliding friction pair and the third sliding friction pair is first-order displacement, and the displacement of the first sliding friction pair and the fourth sliding friction pair is second-order displacement. The displacement of the first order displacement and the second order displacement is set according to requirements. When an earthquake occurs, the first-order displacement friction coefficient is smaller than the second-order displacement friction coefficient, the second sliding friction pair and the third sliding friction pair slide first, and the first sliding friction pair and the fourth sliding friction pair slide later. During small and medium earthquakes, the displacement effect of the structure under the action of the earthquake is smaller than the first-order designed displacement, the friction pendulum seismic isolation support swings only in the first-order displacement range, the second sliding friction pair and the third sliding friction pair start to slide, and the first sliding friction pair and the fourth sliding friction pair are relatively static. When the earthquake occurs, the displacement effect under the action of the earthquake is larger than the designed displacement of the first-order displacement, when the first-order displacement slides to the designed value, the first restraint ring of the upper middle sliding plate is contacted with the first buffer ring of the spherical crown lining plate, the second restraint ring of the lower middle sliding plate is contacted with the second buffer ring of the spherical lining plate, the second sliding friction pair and the third sliding friction pair stop sliding, and the first-order displacement stops. After the first-order displacement stops, the second-order displacement starts to slide, the first sliding friction pair and the fourth sliding friction pair start to slide, after the second-order displacement slides, the energy consumption capacity is enhanced, after the second-order sliding reaches a displacement effect value under the action of an earthquake, the sliding is stopped, the sliding direction is converted, and the return stroke reverse sliding is started. During return stroke, the first-order displacement firstly slides reversely in the return stroke, the first restraint ring of the upper middle sliding plate reversely slides to reversely contact with the first buffer ring return stroke of the spherical cap lining plate, the second restraint ring of the lower middle sliding plate reversely contacts with the second buffer ring return stroke of the spherical lining plate, and then the first restraint ring and the second restraint ring return stroke are converted into second-order displacement return stroke reverse sliding.
The utility model provides a pair of two-step friction pendulum isolation bearing that slides has improved the shock insulation effect of structure when little shake and well shake, can alleviate personnel's in the building panic and to the damage of facility, and the comfort level when the earthquake takes place improves by a wide margin. The small earthquake and the large earthquake can be achieved. After the shock insulation effect in small and medium earthquakes is improved, the displacement of the structure in rare earthquakes can be effectively reduced. The top surface of the upper middle sliding plate is provided with the first boss, and the bottom surface of the lower middle sliding plate is provided with the fourth boss, so that the plane size of the support is reduced by 10 percent compared with the conventional friction pendulum support with the same specification, the plane area is reduced by 20 percent, the size of a column pier connected with the support is correspondingly reduced, and the product cost is reduced by more than 30 percent.
Drawings
FIG. 1 is a schematic structural view of a double-step sliding friction pendulum seismic isolation bearing of the present invention;
FIG. 2 is an exploded view of a double-step sliding friction pendulum seismic isolation bearing;
FIG. 3 is a structural schematic diagram of maximum displacement of first-order displacement of a double-order sliding friction pendulum seismic isolation support;
FIG. 4 is a structural schematic diagram of second-order displacement maximum displacement of a double-order sliding friction pendulum seismic isolation support;
FIG. 5 is an envelope area diagram of a hysteresis curve of a double-order slip friction pendulum seismic isolation support.
Detailed Description
The following describes the concrete structure of the dual-step sliding friction pendulum seismic isolation bearing in further detail with reference to the accompanying drawings.
As shown in figure 1, the utility model relates to a two-step sliding friction pendulum isolation bearing comprises an upper support plate 1, an upper middle sliding plate 2, a spherical crown lining plate 3, a lower middle sliding plate 4 and a lower support plate 5.
As shown in fig. 2, the utility model relates to a two-step sliding friction pendulum isolation bearing, which comprises an upper bearing plate 1, an upper middle sliding plate 2, a spherical crown lining plate 3, a lower middle sliding plate 4 and a lower bearing plate 5, wherein the top surface of the upper bearing plate 1 is a first plane 11, the bottom surface is a first concave surface 12, a first stainless steel sliding plate 13 is arranged in the first concave surface 12, the top surface of the upper middle sliding plate 2 is a first convex surface 21 matched with the first concave surface 12, the first convex surface 21 is provided with a first boss 22, and a first spherical tetrafluoro plate 23 is arranged in the first boss 22; the bottom surface of the upper middle sliding plate 2 is a second concave surface 24, a second stainless steel sliding plate 25 is arranged in the second concave surface 24, the edge of the second concave surface 24 is provided with a first restraint ring 26 matched with the spherical crown lining plate 3, the upper part of the spherical crown lining plate 3 is provided with a first buffer ring 31, the first buffer ring 31 is matched with the first restraint ring 26, the top surface of the spherical crown lining plate 3 is a second convex surface 32 matched with the second concave surface 24, the second convex surface 32 is provided with a second boss 33, and a second spherical tetrafluoro plate 34 is arranged in the second boss 33; the bottom surface of the spherical crown lining plate 3 is a third convex surface 35, the third convex surface 35 is provided with a third boss 36, a third spherical tetrafluoro plate 37 is arranged in the third boss 36, the lower part of the spherical crown lining plate 3 is provided with a second buffer ring 38, the top surface of the lower middle sliding plate 4 is a third concave surface 41 matched with the third convex surface 35, a third stainless steel sliding plate 42 is arranged in the third concave surface 41, the edge of the third concave surface 41 is provided with a second restraining ring 43 matched with the spherical crown lining plate 3, and the second buffer ring 38 is matched with the second restraining ring 43; the bottom surface of the lower middle sliding plate 4 is a fourth convex surface 44, the fourth convex surface 44 is provided with a fourth boss 45, a fourth spherical tetrafluoro plate 46 is arranged in the fourth boss 45, the top surface of the lower support plate 5 is a fourth concave surface 51 matched with the fourth convex surface 44, a fourth stainless steel sliding plate 52 is arranged in the fourth concave surface 51, and the bottom surface of the lower support plate 5 is a second plane 53; the first spherical tetrafluoro-plate 23 and the fourth spherical tetrafluoro-plate 46 have the same friction coefficient, the second spherical tetrafluoro-plate 34 and the third spherical tetrafluoro-plate 37 have the same friction coefficient, and the friction coefficient between the first spherical tetrafluoro-plate 23 and the fourth spherical tetrafluoro-plate 46 is larger than the friction coefficient between the second spherical tetrafluoro-plate 34 and the third spherical tetrafluoro-plate 37.
As shown in fig. 3, the first restraint ring 26 of the upper intermediate slide 2 contacts the first cushion ring 31 of the spherical cap liner 3, and the second restraint ring 43 of the lower intermediate slide 4 contacts the second cushion ring 38 of the spherical liner 3.
As shown in fig. 4, the upper support plate 1 and the upper intermediate slide plate 2 slide, and the lower intermediate slide plate 4 and the lower support plate 5 slide.
As shown in FIG. 5, the utility model relates to a double-step friction pendulum isolation bearing hysteresis curve's envelope area 6 transversely is the displacement, vertically is the power value.
The utility model provides a two-step friction pendulum isolation bearing that slides, spherical cap welt 3 is the spherical contact with last middle slide 2, second stainless steel slide 25, second spherical tetrafluoro plate 34 constitutes the second sliding friction pair, spherical cap welt 3 is the spherical contact with lower middle slide 4, third stainless steel slide 42, third spherical tetrafluoro plate 37 constitutes the third sliding friction pair, the vice coefficient of friction who rubs with the third sliding friction pair of second sliding friction is the same, spherical cap welt 3 and last middle slide 2, spherical cap welt 3 constitutes first order compound pendulum formula friction pendulum support with lower middle slide 4. Upper bracket board 1 is spherical contact with last middle slide 2, first stainless steel slide 13, first spherical tetrafluoro plate 23 constitutes first sliding friction pair, bottom suspension bedplate 5 is spherical contact with lower middle slide 4, fourth stainless steel slide 52, fourth spherical tetrafluoro plate 46 constitutes fourth sliding friction pair, first sliding friction pair is the same with the vice coefficient of friction of fourth sliding friction, and first sliding friction pair is vice with the vice coefficient of friction of fourth sliding friction to be greater than the vice coefficient of friction of second sliding friction pair and third sliding friction, upper bracket board 1 and last middle slide 2, bottom suspension bedplate 5 constitutes second order complex friction pendulum formula support with lower middle slide 4.
The utility model provides a two-step friction pendulum isolation bearing that slides comprises upper bracket board 1, upper middle slide 2, spherical crown welt 3, lower middle slide 4, undersetting board 5 the compound pendulum formula friction pendulum isolation bearing of two series connections. The upper support plate 1 is provided with a mounting hole connected with the upper structure, and the lower support plate 5 is provided with a mounting hole connected with the lower structure. The displacement of the second sliding friction pair and the third sliding friction pair is first-order displacement, and the displacement of the first sliding friction pair and the fourth sliding friction pair is second-order displacement. The displacement of the first order displacement and the second order displacement is set according to requirements. When an earthquake occurs, the first-order displacement friction coefficient is smaller than the second-order displacement friction coefficient, the second sliding friction pair and the third sliding friction pair slide first, and the first sliding friction pair and the fourth sliding friction pair slide later. During small and medium earthquakes, the displacement effect of the structure under the action of the earthquake is smaller than the first-order designed displacement, the friction pendulum seismic isolation support swings only in the first-order displacement range, the second sliding friction pair and the third sliding friction pair start to slide, and the first sliding friction pair and the fourth sliding friction pair are relatively static. During major earthquake, the displacement effect under the action of earthquake is larger than the designed displacement of the first-order displacement, when the first-order displacement slides to the designed value, the first restraint ring 26 of the upper middle sliding plate 2 is contacted with the first buffer ring 31 of the spherical cap lining plate 3, the second restraint ring 43 of the lower middle sliding plate 4 is contacted with the second buffer ring 38 of the spherical lining plate 3, the second sliding friction pair and the third sliding friction pair stop sliding, and the first-order displacement stops. After the first-order displacement stops, the second-order displacement starts to slide, the first sliding friction pair and the fourth sliding friction pair start to slide, after the second-order displacement slides, as shown in an envelope area diagram of a hysteresis curve in fig. 5, the energy consumption capacity is enhanced, and after the second-order displacement slides to a displacement effect value under the action of an earthquake, the sliding is stopped, the sliding direction is converted, and the return stroke reverse sliding is started. During return stroke, the first-order displacement firstly slides reversely in the return stroke, the first restraint ring 26 of the first-order displacement return stroke slides reversely to be in return stroke reverse contact with the first buffer ring 31 of the spherical cap lining plate 3, the second restraint ring 43 of the lower middle sliding plate 4 is in return stroke reverse contact with the second buffer ring 38 of the spherical lining plate 3, and then the first-order displacement return stroke reverse sliding is converted into second-order displacement return stroke reverse sliding.
The utility model provides a pair of two-step friction pendulum isolation bearing that slides has improved the shock insulation effect of structure when little shake and well shake, can alleviate personnel's in the building panic and to the damage of facility, and the comfort level when the earthquake takes place improves by a wide margin. The small earthquake and the large earthquake can be achieved. After the shock insulation effect in small and medium earthquakes is improved, the displacement of the structure in rare earthquakes can be effectively reduced. The top surface of the upper middle sliding plate 2 is provided with the first boss 22, and the bottom surface of the lower middle sliding plate 4 is provided with the fourth boss 45, so that the plane size of the support is reduced by 10 percent compared with the conventional friction pendulum support with the same specification, the plane area is reduced by 20 percent, the size of a column pier connected with the support is correspondingly reduced, and the product cost is reduced by more than 30 percent.
The utility model provides a double step friction pendulum isolation bearing that slides is not only limited to above-mentioned structure, and the all is in the utility model discloses any modification of doing on the basis, equivalent replacement and improvement etc. all should contain within the protection scope.
Claims (1)
1. The utility model provides a friction pendulum isolation bearing slides in two orders, includes upper bracket board, bottom suspension bedplate, its characterized in that: an upper middle sliding plate, a spherical crown lining plate and a lower middle sliding plate are arranged between the upper support plate and the lower support plate, the top surface of the upper support plate is a first plane, the bottom surface of the upper support plate is a first concave surface, a first stainless steel sliding plate is arranged in the first concave surface, the top surface of the upper middle sliding plate is a first convex surface matched with the first concave surface, a first boss is arranged on the first convex surface, a first spherical tetrafluoro plate is arranged in the first boss, and the first stainless steel sliding plate and the first spherical tetrafluoro plate form a first sliding friction pair; the bottom surface of the upper middle sliding plate is a second concave surface, a second stainless steel sliding plate is arranged in the second concave surface, the edge of the second concave surface is provided with a first restraint ring matched with the spherical crown lining plate, the upper part of the spherical crown lining plate is provided with a first buffer ring, the first buffer ring is matched with the first restraint ring, the top surface of the spherical crown lining plate is a second convex surface matched with the second concave surface, the second convex surface is provided with a second boss, a second spherical tetrafluoro plate is arranged in the second boss, and the second stainless steel sliding plate and the second spherical tetrafluoro plate form a second sliding friction pair; the bottom surface of the spherical crown lining plate is a third convex surface, the third convex surface is provided with a third boss, a third spherical tetrafluoro plate is arranged in the third boss, the lower part of the spherical crown lining plate is provided with a second buffer ring, the top surface of the lower middle sliding plate is a third concave surface matched with the third convex surface, a third stainless steel sliding plate is arranged in the third concave surface, the third stainless steel sliding plate and the third spherical tetrafluoro plate form a third sliding friction pair, the edge of the third concave surface is provided with a second constraint ring matched with the spherical crown lining plate, and the second buffer ring is matched with the second constraint ring; the bottom surface of the lower middle sliding plate is a fourth convex surface, the fourth convex surface is provided with a fourth boss, a fourth spherical tetrafluoro plate is arranged in the fourth boss, the top surface of the lower support plate is a fourth concave surface matched with the fourth convex surface, a fourth stainless steel sliding plate is arranged in the fourth concave surface, the fourth stainless steel sliding plate and the fourth spherical tetrafluoro plate form a fourth sliding friction pair, and the bottom surface of the lower support plate is a second plane; the friction coefficients of the first sliding friction pair and the fourth sliding friction pair are the same, the friction coefficients of the second sliding friction pair and the third sliding friction pair are the same, and the friction coefficients of the first sliding friction pair and the fourth sliding friction pair are larger than the friction coefficients of the second sliding friction pair and the third sliding friction pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022688055.XU CN213805856U (en) | 2020-11-19 | 2020-11-19 | Double-step sliding friction pendulum shock insulation support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022688055.XU CN213805856U (en) | 2020-11-19 | 2020-11-19 | Double-step sliding friction pendulum shock insulation support |
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| CN213805856U true CN213805856U (en) | 2021-07-27 |
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| CN202022688055.XU Active CN213805856U (en) | 2020-11-19 | 2020-11-19 | Double-step sliding friction pendulum shock insulation support |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319625A (en) * | 2021-11-25 | 2022-04-12 | 华中科技大学 | Shock isolation device for resisting earthquake in rare occurrence and building shock isolation method |
| CN114743455A (en) * | 2022-03-10 | 2022-07-12 | 广州大学 | Friction sliding type shock insulation support |
-
2020
- 2020-11-19 CN CN202022688055.XU patent/CN213805856U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319625A (en) * | 2021-11-25 | 2022-04-12 | 华中科技大学 | Shock isolation device for resisting earthquake in rare occurrence and building shock isolation method |
| CN114743455A (en) * | 2022-03-10 | 2022-07-12 | 广州大学 | Friction sliding type shock insulation support |
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