CN111926694A - High-energy-consumption double-curved-surface seismic reduction and isolation support - Google Patents
High-energy-consumption double-curved-surface seismic reduction and isolation support Download PDFInfo
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- CN111926694A CN111926694A CN202010943101.8A CN202010943101A CN111926694A CN 111926694 A CN111926694 A CN 111926694A CN 202010943101 A CN202010943101 A CN 202010943101A CN 111926694 A CN111926694 A CN 111926694A
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- 238000002955 isolation Methods 0.000 title claims abstract description 39
- 230000009467 reduction Effects 0.000 title claims abstract description 28
- 238000005265 energy consumption Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 72
- 239000010959 steel Substances 0.000 claims abstract description 72
- 230000000670 limiting effect Effects 0.000 claims abstract description 56
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 description 15
- 229910001220 stainless steel Inorganic materials 0.000 description 15
- 238000013016 damping Methods 0.000 description 13
- 239000002131 composite material Substances 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 229910052755 nonmetal Inorganic materials 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
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Abstract
A high-energy-consumption hyperboloid seismic isolation and reduction support comprises an upper base plate, a guide friction pair, a middle base plate, a spherical friction pair, a steel-return damper, a lower base plate and a limiting device; the bottom surface of the upper seat plate is a concave spherical surface, the top surface of the lower seat plate is a concave spherical surface, the upper surface and the lower surface of the middle seat plate are convex spherical surfaces matched with the concave spherical surfaces, and the upper seat plate, the middle seat plate and the lower seat plate form a rotating mechanism of the support; limiting devices for limiting the upper seat plate are respectively arranged on the four sides of the lower seat plate; the one side, both sides or all around of support are provided with back type steel attenuator respectively, and back type steel attenuator is "returning" style of calligraphy, and one side of back type steel attenuator is provided with the opening, and the opening part has the dislocation difference in height, and the low free end of opening part is connected with lower bedplate, and the eminence free end of opening part is connected with last bedplate. The double-curved-surface seismic isolation bearing has various advantages of the double-curved-surface seismic isolation bearing, has stronger energy consumption capability, can meet various seismic requirements during bridge construction, and is particularly suitable for high-intensity and long-period seismic areas.
Description
Technical Field
The invention belongs to the field of bridges and building structures, and particularly relates to a high-energy-consumption hyperboloid seismic isolation and reduction support.
Background
China is a country with frequent earthquake disasters, and in recent decades, earthquake disasters cause devastating disasters to some areas of China. Under the large background of the development of capital construction in China, the seismic problem of bridge engineering is more and more emphasized, and the most common seismic means at present adopts seismic isolation and reduction technology. The seismic isolation and reduction technology is mainly characterized in that a seismic isolation and reduction support is arranged in a structure to reduce the natural vibration frequency of the structure, increase the damping of the structure and disperse seismic force, so that the overall seismic resistance of the bridge is improved. The commonly used shock absorption and isolation support mainly comprises a lead core rubber support, a high-damping rubber support, an E-shaped steel damping support, a C-shaped steel damping support and a hyperboloid shock absorption and isolation support. The high-damping rubber support and the lead core rubber support both belong to composite rubber supports, the damping characteristic and the deformability of the rubber are greatly influenced by external temperature, humidity and other environmental factors, and the durability and the stability of the rubber are poor. The E-shaped steel damping support and the C-shaped steel damping support are limited by E-shaped steel damping and C-shaped steel damping structures, the deformation capacity is limited, and the energy consumption capacity is small. The hyperboloid seismic isolation and reduction support has a good seismic isolation and reduction function, stable sliding rigidity after earthquake and good self-resetting performance, is most widely applied to bridges adopting the seismic isolation and reduction technology at present, but the damping performance of the hyperboloid seismic isolation and reduction support is mainly realized by coulomb friction damping, and the energy consumption capacity of the hyperboloid seismic isolation and reduction support is relatively small due to the limited friction coefficient.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-energy-consumption double-curved-surface seismic isolation and reduction support, and a steel-return damper structure is additionally arranged on the basis of the existing double-curved-surface seismic isolation and reduction support, so that the energy consumption capacity of the support is greatly improved. The double-curved-surface seismic isolation bearing has various advantages of the double-curved-surface seismic isolation bearing, has stronger energy consumption capability, can meet various seismic requirements during bridge construction, and is particularly suitable for high-intensity and long-period seismic areas.
In order to realize the technical purpose, the adopted technical scheme is as follows: a high-energy-consumption hyperboloid seismic isolation and reduction support comprises an upper base plate, a guide friction pair, a middle base plate, a spherical friction pair, a steel-return damper, a lower base plate and a limiting device;
the bottom surface of the upper seat plate is a concave spherical surface, the top surface of the lower seat plate is a concave spherical surface, the middle seat plate is positioned between the upper seat plate and the lower seat plate, the upper surface and the lower surface of the middle seat plate are convex spherical surfaces matched with the concave spherical surfaces, spherical friction pairs are arranged between the upper seat plate and the middle seat plate and between the middle seat plate and the lower seat plate, and the upper seat plate, the middle seat plate and the lower seat plate form a rotating mechanism of the support;
limiting devices for limiting the upper seat plate are respectively arranged on the four sides of the lower seat plate;
the one side, both sides or all around of support are provided with back type steel attenuator respectively, and back type steel attenuator is "returning" style of calligraphy, and one side of back type steel attenuator is provided with the opening, and the opening part has the dislocation difference in height, and the low free end of opening part is connected with lower bedplate, and the eminence free end of opening part is connected with last bedplate.
The steel return damper is composed of a straight section part and two L-shaped cantilever parts, wherein the straight section part is horizontally arranged, the L-shaped cantilever parts are obliquely arranged, one ends of the two L-shaped cantilever parts are fixed ends and are respectively connected to two ends of the straight section part, the two L-shaped cantilever parts are arranged in a vertically staggered mode, the free end of one L-shaped cantilever part located at a high position is connected with the upper seat plate, and the free end of the other L-shaped cantilever part located at a low position is connected with the lower seat plate.
A top seat plate used for providing one-way sliding or multi-way sliding is arranged above the upper seat plate, and a plane friction pair is arranged between the upper seat plate and the top seat plate.
The section of the steel damper is rectangular.
The corners of the inner side and the outer side of the steel damper are provided with rounding structures.
The material of the steel clip damper is low-carbon steel with good plasticity, and the yield strength is between 160MPa and 355 MPa.
The circular steel damper is integrally formed.
The invention has the beneficial effects that:
1) according to the high-energy-consumption hyperboloid seismic isolation and reduction support, when no earthquake occurs, due to the limiting effect of the limiting plate fixed on the base plate, the support can only rotate on the curved surface without relative sliding, the steel return damper does not work, the rotation of the support is realized by the spherical friction pair, the normal sliding of the support is realized by the plane friction pair, and the smooth operation of a bridge and an upper structure can be ensured. When an earthquake occurs, the limiting pin and the anti-pulling screw are cut off, the limiting plate loses the limiting effect, the spherical friction pair of the support seat slides relatively, and meanwhile, the return steel damper participates in the work, so that a large amount of earthquake energy is dissipated, and the seismic reduction and isolation effect is obvious;
2) the invention overcomes the problems that the common hyperboloid seismic isolation and reduction support has low energy consumption and is not suitable for high-intensity and long-vibration-cycle sites, and solves the design problem of bridge seismic resistance in the high-intensity and long-vibration-cycle sites;
3) the steel damper can carry out hysteretic motion along any horizontal direction, the hysteretic curve is full, the energy consumption effect is good, and the hysteretic curve in any horizontal direction is basically consistent;
4) the steel damper has strong designability, and can meet the requirements of any damping force by changing the section size and the overall dimension;
5) the steel-clip damper adopted by the invention is little influenced by external environment, and has stable and reliable performance and good durability;
6) the invention integrates the steel damper and the support into a whole, is convenient to install and replace and saves the space of the pier top of the bridge.
Drawings
FIG. 1 is a front view of the structure of a transverse bridge embodiment 1 of the present invention;
FIG. 2 is a top view of the structure of example 1 of the present invention;
FIG. 3 is a front view of the structure of the transverse bridge embodiment 2 of the present invention;
FIG. 4 is a front view of the structure of longitudinal bridging embodiment 2 of the present invention
FIG. 5 is a top view of the structure of example 2 of the present invention;
FIG. 6 is a front view of the structure of embodiment 3 of the present invention;
FIG. 7 is a front view of the structure of longitudinal bridging embodiment 3 of the present invention
FIG. 8 is a top view of the structure of example 3 of the present invention;
FIG. 9 is an isometric view of a swage damper of this invention;
FIG. 10 is a top view of a swage damper of the present invention;
reference numerals: 1. the sliding plate comprises a top seat plate, 2, a planar non-metallic sliding plate, 3, a planar stainless steel sliding plate, 4, an upper seat plate, 5, a guide friction pair, 6, a spherical non-metallic sliding plate, 7, a middle seat plate, 8, a spherical stainless steel sliding plate, 9, a steel damper, 10, a limiting plate, 11, a limiting pin, 12, an anti-pulling screw, 13, a lower seat plate, 901, a straight section part, 902 and a cantilever part.
Detailed Description
As shown in fig. 1-10, the high-energy-consumption hyperboloid seismic isolation and reduction support comprises an upper seat plate 4, a guide friction pair, a middle seat plate 7, a spherical friction pair, a steel bent damper 9, a lower seat plate 13 and a limiting device; the transverse or longitudinal bridge is shown without the front view of the damper.
The bottom surface of the upper seat plate 4 is a concave spherical surface, the top surface of the lower seat plate 13 is a concave spherical surface, the middle seat plate 7 is positioned between the upper seat plate and the lower seat plate 13, the upper surface and the lower surface of the middle seat plate 7 are convex spherical surfaces matched with the concave spherical surfaces, spherical friction pairs are arranged between the upper seat plate 4 and the middle seat plate 7 and between the middle seat plate 7 and the lower seat plate 13, and the upper seat plate 4, the middle seat plate 7 and the lower seat plate 13 form a rotating mechanism of the support; the concave spherical surface of the lower seat plate 13 and the concave spherical surface of the upper seat plate 4 are respectively coated with a spherical stainless steel sliding plate 8, and the spherical stainless steel sliding plates 6 and the spherical non-metallic sliding plates 6 embedded in the concave pits of the upper convex spherical surface and the lower convex spherical surface of the middle seat plate 7 form a rotary friction pair, so that the rotary friction pair can meet the rotary requirement of an upper beam structure, and the hysteretic performance requirement of the support under the earthquake can be met through the composite motion of the double curved surface friction pair.
Limiting devices for limiting the upper seat plate 4 are respectively arranged on four sides of the lower seat plate 13, and the limiting plate 10 of the support, the limiting pin 11 and the anti-pulling screw 12 form the limiting devices.
The two sides or the periphery of the support are respectively provided with a steel clip damper 9, the steel clip dampers 9 are in a shape of a Chinese character 'hui', one side of each steel clip damper 9 is provided with an opening, the staggered height difference is formed at the opening, the free end at the lower part of the opening is connected with the lower seat plate 13, and the free end at the higher part of the opening is connected with the upper seat plate 4.
The clip steel damper 9 is composed of a horizontal straight section 901 and two inclined L-shaped cantilever sections 902, one end of each of the two L-shaped cantilever sections 902 is a fixed end and is connected to two ends of the straight section 901, the two L-shaped cantilever sections 902 are arranged in a vertically staggered manner, the free end of one L-shaped cantilever section 902 located at a high position is connected with the upper seat plate 4, and the free end of the other L-shaped cantilever section 902 located at a low position is connected with the lower seat plate 13. The straight section part is as wide as one's length direction, and the overhang wall part is as wide as one's length direction, and the intensity problem is considered, the steel damper 9 is locally enlarged at the junction with the seat plate 4 on the support and the seat plate 13 down for conveniently being connected with the support, the connection can adopt the form of welding or bolted connection, the bolt hole is opened on the corresponding upper seat plate or the seat plate down, and the bolt hole is correspondingly opened at the free end of the overhang wall part for bolted connection.
The peripheries of the upper seat plate 4 and the lower seat plate 13 of the support can be provided with cantilever structures, the number of the cantilevers is determined according to the number of the steel return dampers 9, and when the support is provided with one steel return damper 9, the upper seat plate 4 and the lower seat plate 13 only need to be respectively provided with one cantilever structure on the same side; when the support is provided with two steel-return dampers 9, the upper seat plate 4 and the lower seat plate 13 need to be provided with two cantilever structures on the same side respectively; when the support is provided with three steel-return dampers 9, the upper seat plate 4 and the lower seat plate 13 need to be provided with three cantilever structures on the same side respectively; when the support is provided with four steel-return dampers 9, cantilever structures are required to be arranged around the upper seat plate 4 and the lower seat plate 13.
A top seat plate 1 used for providing one-way sliding or multi-way sliding is arranged above the upper seat plate 4, and a plane friction pair is arranged between the upper seat plate 4 and the top seat plate 1.
The section of the steel clip damper 9 is rectangular, and the energy consumption capacity of the damper is higher than that of other section forms.
The corners of the inner side and the outer side of the steel clip damper 9 are provided with rounding structures, so that the stress concentration of the steel clip damper 9 can be reduced.
The steel damper 9 should be made of low carbon steel with good plasticity, and the yield strength is 160MPa-355 MPa.
The steel clip damper 9 adopts an integrated forming process, so that the fatigue life can be prolonged, and the mechanical property can be fully ensured.
The upper surface of the upper seat plate 4 is provided with a pit, and a plane nonmetal sliding plate 2 is embedded in the pit and a plane stainless steel sliding plate 3 attached to the lower surface of the top seat plate 1 form a plane friction pair, so that the horizontal sliding requirement of the upper beam body structure can be met.
A limiting plate 10 of the support, a limiting pin 11 and an anti-pulling screw 12 form a limiting device and are fixed on a lower seat plate 13. When no earthquake occurs, the limiting plate 10 plays a role in limiting and transmitting horizontal force, when the earthquake occurs, the limiting pin 11 and the anti-pulling screw 12 are cut off, the limiting constraint of the support is relieved, the support performs composite motion between the two curved surface friction pairs, and the upper seat plate 4 drives the return type steel damper 9 to perform hysteretic motion, so that the shock absorption and isolation functions are achieved. Because the motion friction pair of the support is a spherical friction pair and the dislocation height difference exists at the joint of the steel damper 9 and the support, the support can carry out hysteretic motion along any direction.
Example 1
Referring to fig. 1, 2, 9 and 10, the high-energy-consumption hyperboloid seismic isolation and reduction support mainly comprises a top seat plate 1, a planar non-metallic sliding plate 2, a planar stainless steel sliding plate 3, an upper seat plate 4, a guide friction pair 5, a spherical non-metallic sliding plate 6, a middle seat plate 7, a spherical stainless steel sliding plate 8, a steel clip damper 9, a limiting plate 10, a limiting pin 11, an anti-pulling screw 12, a lower seat plate 13 and the like. There is no sliding gap between the top seat plate 1 and the upper seat plate 4, which is equivalent to only one upper seat plate.
The concave spherical surface of the lower seat plate 13 and the lower convex spherical surface of the middle seat plate 7 of the support, the concave spherical surface of the upper seat plate 4 and the upper convex spherical surface of the middle seat plate 7 form a rotating mechanism of the support, the concave spherical surface of the lower seat plate 13 and the concave spherical surface of the upper seat plate 4 are respectively coated with a spherical stainless steel sliding plate 8, and spherical non-metallic sliding plates 6 embedded in pits of the upper convex spherical surface and the lower convex spherical surface of the middle seat plate 7 form a rotating friction pair, so that the rotating requirement of an upper beam body structure can be met, and the hysteretic performance requirement of the support under the earthquake can also be met through the composite motion of the double curved surface friction pair.
Two sides of the upper seat plate 4 and the lower seat plate 13 are respectively provided with a cantilever structure.
The steel damper 9 of the support adopts the design of rectangle uniform cross section, the overall structure is "back" style of calligraphy, 9 one side of steel damper of the shape of the back is provided with the opening, the opening part has the dislocation difference in height, the cantilever structural connection of low department and lower bedplate 13, the cantilever structural connection of eminence and bedplate 4 on the support, the connected mode is the welding. Two steel clip dampers 9 are arranged on one support, and the steel clip dampers 9 are symmetrically arranged on two sides of the support.
In consideration of the strength problem, the U-shaped steel damper 9 is locally enlarged at the joint of the upper seat plate 4 and the lower seat plate 13 of the support, and the corners of the inner side and the outer side of the U-shaped steel damper 9 are provided with rounded structures.
A limiting plate 10 of the support, a limiting pin 11 and an anti-pulling screw 12 form a limiting device and are fixed on a lower seat plate 13. When no earthquake occurs, the limiting plate 10 plays a role in limiting and transmitting horizontal force, when the earthquake occurs, the limiting pin 11 and the anti-pulling screw 12 are cut off, the limiting constraint of the support is relieved, the support performs composite motion between the two curved surface friction pairs, and the upper seat plate 4 drives the return type steel damper 9 to perform hysteretic motion, so that the shock absorption and isolation functions are achieved. Because the motion friction pair of the support is a spherical friction pair and the dislocation height difference exists at the joint of the steel damper 9 and the support, the support can carry out hysteretic motion along any direction.
Example 2
Referring to fig. 3, 4, 5, 9 and 10, the high-energy-consumption hyperboloid seismic isolation and reduction support mainly comprises an upper seat plate 4, a guide friction pair 5, a spherical non-metal sliding plate 6, a middle seat plate 7, a spherical stainless steel sliding plate 8, a steel-return damper 9, a limiting plate 10, a limiting pin 11, an anti-pulling screw 12, a lower seat plate 13 and the like.
The concave spherical surface of the lower seat plate 13 and the lower convex spherical surface of the middle seat plate 7 of the support, the concave spherical surface of the upper seat plate 4 and the upper convex spherical surface of the middle seat plate 7 form a rotating mechanism of the support, the concave spherical surface of the lower seat plate 13 and the concave spherical surface of the upper seat plate 4 are respectively coated with a spherical stainless steel sliding plate 8, and spherical non-metallic sliding plates 6 embedded in pits of the upper convex spherical surface and the lower convex spherical surface of the middle seat plate 7 form a rotating friction pair, so that the rotating requirement of an upper beam body structure can be met, and the hysteretic performance requirement of the support under the earthquake can also be met through the composite motion of the double curved surface friction pair.
The same sides of the upper seat plate 4 and the lower seat plate 13 are respectively provided with two cantilever structures which are vertically arranged at 90 degrees.
The steel damper 9 of the support adopts the design of rectangle uniform cross section, the overall structure is "back" style of calligraphy, 9 one side of steel damper of the shape of the back is provided with the opening, the opening part has the dislocation difference in height, the cantilever structural connection of low department and lower bedplate 13, the cantilever structural connection of eminence and bedplate 4 on the support, the connected mode is the welding. Two steel clip dampers 9 are arranged on one support, and the steel clip dampers 9 are vertically arranged on the adjacent side surface of the support at 90 degrees.
In consideration of the strength problem, the U-shaped steel damper 9 is locally enlarged at the joint of the upper seat plate 4 and the lower seat plate 13 of the support, and the corners of the inner side and the outer side of the U-shaped steel damper 9 are provided with rounded structures.
The plane is provided with the pit on the upper plate 4 of support, inlays in the pit nonmetal slide 2 in plane and pastes the plane stainless steel slide 3 that covers on the plane under bedplate 1 and form plane friction pair, does not have the slip clearance between bedplate and the upper plate on the horizontal bridge, has the slip clearance between bedplate and the upper plate on the vertical bridge makes progress, can adapt to the vertical bridge of upper portion roof beam body structure to the horizontal slip requirement.
A limiting plate 10 of the support, a limiting pin 11 and an anti-pulling screw 12 form a limiting device and are fixed on a lower seat plate 13. When no earthquake occurs, the limiting plate 10 plays a role in limiting and transmitting horizontal force, when the earthquake occurs, the limiting pin 11 and the anti-pulling screw 12 are cut off, the limiting constraint of the support is relieved, the support performs composite motion between the two curved surface friction pairs, and the upper seat plate 4 drives the return type steel damper 9 to perform hysteretic motion, so that the shock absorption and isolation functions are achieved. Because the motion friction pair of the support is a spherical friction pair and the dislocation height difference exists at the joint of the steel damper 9 and the support, the support can carry out hysteretic motion along any direction.
Example 3
Referring to fig. 6, 7, 8, 9 and 10, the high-energy-consumption hyperboloid seismic isolation and reduction support mainly comprises a top seat plate 1, a planar non-metallic sliding plate 2, a planar stainless steel sliding plate 3, an upper seat plate 4, a guide friction pair 5, a spherical non-metallic sliding plate 6, a middle seat plate 7, a spherical stainless steel sliding plate 8, a steel return damper 9, a limiting plate 10, a limiting pin 11, an anti-pulling screw 12, a lower seat plate 13 and the like.
The concave spherical surface of the lower seat plate 13 and the lower convex spherical surface of the middle seat plate 7 of the support, the concave spherical surface of the upper seat plate 4 and the upper convex spherical surface of the middle seat plate 7 form a rotating mechanism of the support, the concave spherical surface of the lower seat plate 13 and the concave spherical surface of the upper seat plate 4 are respectively coated with a spherical stainless steel sliding plate 8, and spherical non-metallic sliding plates 6 embedded in pits of the upper convex spherical surface and the lower convex spherical surface of the middle seat plate 7 form a rotating friction pair, so that the rotating requirement of an upper beam body structure can be met, and the hysteretic performance requirement of the support under the earthquake can also be met through the composite motion of the double curved surface friction pair.
The same sides of the upper seat plate 4 and the lower seat plate 13 are respectively provided with a cantilever structure.
The steel damper 9 of the support adopts the design of rectangle uniform cross section, the overall structure is "back" style of calligraphy, 9 one side of steel damper of the shape of the back is provided with the opening, the opening part has the dislocation difference in height, the cantilever structural connection of low department and lower bedplate 13, the cantilever structural connection of eminence and bedplate 4 on the support, the connected mode is the welding. One support is provided with 1 steel clip damper 9.
In consideration of the strength problem, the U-shaped steel damper 9 is locally enlarged at the joint of the upper seat plate 4 and the lower seat plate 13 of the support, and the corners of the inner side and the outer side of the U-shaped steel damper 9 are provided with rounded structures.
The plane is provided with the pit on the upper plate 4 of support, inlays in the pit nonmetal slide 2 in plane and pastes the plane stainless steel slide 3 that covers on the plane under bedplate 1 and form plane friction pair, has the slip clearance between bedplate and the upper plate on the horizontal bridge, has the slip clearance between bedplate and the upper plate on the vertical bridge makes progress, can adapt to the horizontal slip requirement of upper portion roof beam body structure.
A limiting plate 10 of the support, a limiting pin 11 and an anti-pulling screw 12 form a limiting device and are fixed on a lower seat plate 13. When no earthquake occurs, the limiting plate 10 plays a role in limiting and transmitting horizontal force, when the earthquake occurs, the limiting pin 11 and the anti-pulling screw 12 are cut off, the limiting constraint of the support is relieved, the support performs composite motion between the two curved surface friction pairs, and the upper seat plate 4 drives the return type steel damper 9 to perform hysteretic motion, so that the shock absorption and isolation functions are achieved. Because the motion friction pair of the support is a spherical friction pair and the dislocation height difference exists at the joint of the steel damper 9 and the support, the support can carry out hysteretic motion along any direction.
The above are merely preferred examples of the present invention and are not intended to limit or restrict the present invention. Various modifications and alterations of this invention will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a high power consumption hyperboloid subtracts isolation bearing which characterized in that: comprises an upper seat plate (4), a guide friction pair, a middle seat plate (7), a spherical friction pair, a steel clip damper (9), a lower seat plate (13) and a limiting device;
the bottom surface of the upper seat plate (4) is a concave spherical surface, the top surface of the lower seat plate (13) is a concave spherical surface, the middle seat plate (7) is positioned between the upper seat plate and the lower seat plate (13), the upper surface and the lower surface of the middle seat plate (7) are convex spherical surfaces matched with the concave spherical surfaces, spherical friction pairs are arranged between the upper seat plate (4) and the middle seat plate (7) and between the middle seat plate (7) and the lower seat plate (13), and the upper seat plate (4), the middle seat plate (7) and the lower seat plate (13) form a rotating mechanism of the support;
limiting devices for limiting the upper seat plate (4) are respectively arranged on the four sides of the lower seat plate (13);
the support is characterized in that a steel clip damper (9) is arranged on one side, two sides or the periphery of the support respectively, the steel clip damper (9) is in a shape like a Chinese character 'hui', an opening is arranged on one side of the steel clip damper (9), the opening is staggered, the free end at the lower part of the opening is connected with a lower seat plate (13), and the free end at the higher part of the opening is connected with an upper seat plate (4).
2. The high-energy-consumption hyperboloid seismic isolation and reduction support saddle as claimed in claim 1, wherein: the clip type steel damper (9) is composed of a straight section part (901) which is horizontally arranged and two L-shaped cantilever parts (902) which are obliquely arranged, one ends of the two L-shaped cantilever parts (902) are fixed ends and are respectively connected with two ends of the straight section part (901), the two L-shaped cantilever parts (902) are arranged in a vertically staggered mode, the free end of one L-shaped cantilever part (902) which is positioned at a high position is connected with the upper seat plate (4), and the free end of the other L-shaped cantilever part (902) which is positioned at a low position is connected with the lower seat plate (13).
3. The high-energy-consumption hyperboloid seismic isolation and reduction support saddle as claimed in claim 1, wherein: a top seat plate (1) used for providing one-way sliding or multi-way sliding is arranged above the upper seat plate (4), and a plane friction pair is arranged between the upper seat plate (4) and the top seat plate (1).
4. The high-energy-consumption hyperboloid seismic isolation and reduction support saddle as claimed in claim 1, wherein: the section of the steel return damper (9) is rectangular.
5. The high-energy-consumption hyperboloid seismic isolation and reduction support saddle as claimed in claim 1, wherein: the corners of the inner side and the outer side of the circular steel damper (9) are provided with rounding structures.
6. The high-energy-consumption hyperboloid seismic isolation and reduction support saddle as claimed in claim 1, wherein: the material of the return steel damper (9) is low-carbon steel with good plasticity, and the yield strength is 160MPa-355 MPa.
7. The high-energy-consumption hyperboloid seismic isolation and reduction support saddle as claimed in claim 1, wherein: the return steel damper (9) is integrally formed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010943101.8A CN111926694A (en) | 2020-09-09 | 2020-09-09 | High-energy-consumption double-curved-surface seismic reduction and isolation support |
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| CN202010943101.8A CN111926694A (en) | 2020-09-09 | 2020-09-09 | High-energy-consumption double-curved-surface seismic reduction and isolation support |
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| CN111926694A true CN111926694A (en) | 2020-11-13 |
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| CN202010943101.8A Pending CN111926694A (en) | 2020-09-09 | 2020-09-09 | High-energy-consumption double-curved-surface seismic reduction and isolation support |
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