CN110306426B - Damping support with elastic-plastic structure - Google Patents
Damping support with elastic-plastic structure Download PDFInfo
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- CN110306426B CN110306426B CN201810258501.8A CN201810258501A CN110306426B CN 110306426 B CN110306426 B CN 110306426B CN 201810258501 A CN201810258501 A CN 201810258501A CN 110306426 B CN110306426 B CN 110306426B
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/40—Plastics
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Dampers (AREA)
Abstract
The invention relates to a damping support with an elastic-plastic structure, which comprises: a support module: the spherical cap is connected with the middle lining plate in a spherical contact manner; a damping module: the energy-saving device comprises limiting energy-consuming components which are arranged along the bridge direction and the transverse bridge direction respectively, wherein the two ends of the limiting energy-consuming components arranged along the bridge direction are respectively connected with an upper top plate and a spherical crown, and the two ends of the limiting energy-consuming components arranged along the transverse bridge direction are respectively connected with a lower bottom plate and a middle lining plate. Compared with the prior art, the invention can adapt to the telescopic deformation of the main beam under the action of temperature, the ring component has the functions of energy consumption and limiting, the problems of oil leakage, blockage and the like do not exist, the disassembly and the assembly can be carried out according to the actual requirement, and the daily support can be conveniently maintained and replaced after an earthquake.
Description
Technical Field
The invention relates to a seismic isolation and reduction bridge support, in particular to a damping support with an elastic-plastic structure.
Background
The key to seismic isolation design is how to control the relative displacement of components without significantly increasing the seismic force. The stay cable support has the problems that the stay cable does not consume energy in the deformation motion process of the support, the displacement control effect is not ideal and the like. When the elastic-plastic steel damping support is applied to a bridge structure, the requirement that a beam body is free to stretch and retract under the action of temperature and is not stressed cannot be met. The existing solutions mainly comprise two kinds, one is to utilize the elasticity and plastic deformation of metal to resist the force generated in the beam body by the temperature load; the other is a series speed locking device which is adapted to the temperature displacement generated by the expansion caused by heat and the contraction caused by cold of the beam body. The former is similar to a fixed support, and the elastic-plastic steel damping element has the problems of fatigue and the like; the latter speed locking device has the problems of oil leakage, blockage and the like.
Chinese patent CN206768583U discloses a damping support for bridge, which comprises an upper seat assembly connected with a bridge beam and a lower seat assembly connected to a bridge pier and forming damping to the horizontal movement of the upper seat assembly, wherein the upper seat assembly is slidably supported on the lower seat assembly. This patent simple structure, it is poor with spacing effect to consume energy, has tired scheduling problem.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a damping support with an elastic-plastic structure.
The purpose of the invention can be realized by the following technical scheme:
an elasto-plastic structural damping mount comprising:
a support module: the spherical cap is connected with the middle lining plate in a spherical contact manner;
a damping module: the energy-saving device comprises limiting energy-consuming components which are arranged along the bridge direction and the transverse bridge direction respectively, wherein the two ends of the limiting energy-consuming components arranged along the bridge direction are respectively connected with an upper top plate and a spherical crown, and the two ends of the limiting energy-consuming components arranged along the transverse bridge direction are respectively connected with a lower bottom plate and a middle lining plate.
In the invention, a stainless steel plate and a polytetrafluoroethylene plate can be respectively arranged between the sliding surfaces to reduce the friction force.
Preferably, the lower surface of the upper top plate is provided with a forward slide way along the forward bridge direction, the upper surface of the lower bottom plate is provided with a transverse slide way along the transverse bridge direction, and the upper surface of the spherical crown and the lower surface of the middle lining plate are respectively provided with a guide block which is matched and placed in the forward slide way and the transverse slide way.
More preferably, a butt-joint pin hole or no pin hole is arranged between the forward slide way, the transverse slide way and the guide block, and when the butt-joint pin hole is arranged, a limited-capacity shear pin with two ends respectively arranged in the forward slide way or the transverse slide way and the guide block is further arranged in the pin hole. The shear resistance of the limited capacity shear pin can be designed as desired.
Further preferably, one end of the limiting energy consumption assembly arranged along the bridge direction is fixedly connected with the spherical crown, and the other end of the limiting energy consumption assembly is fixedly or movably connected with the upper top plate.
Further preferably, one end of the limiting energy dissipation assembly along the transverse bridge direction is fixedly connected with the middle lining plate, and the other end of the limiting energy dissipation assembly is fixedly or movably connected with the lower bottom plate.
Preferably, when the limiting energy-consuming assembly along the forward bridge direction is movably connected with the upper top plate, a first limiting sliding groove suspended below the upper top plate is formed in the end portion of the upper top plate, a forward pull rod capable of freely sliding along the inner wall of the first limiting sliding groove is installed in the first limiting sliding groove, the end portion of the limiting energy-consuming assembly along the forward bridge direction is fixedly connected with the forward pull rod, and the limiting energy-consuming assembly along the forward bridge direction is movably connected with the upper top plate by the aid of free sliding of the forward pull rod in the first limiting sliding groove.
Preferably, when the limiting energy-consuming assembly along the transverse bridge direction is movably connected with the lower bottom plate, a second limiting sliding groove suspended above the lower bottom plate is formed in the end portion of the lower bottom plate, a transverse pull rod capable of freely sliding along the inner wall of the second limiting sliding groove is installed in the second limiting sliding groove, the end portion of the limiting energy-consuming assembly along the transverse bridge direction is fixedly connected with the transverse pull rod, and the limiting energy-consuming assembly along the transverse bridge direction is movably connected with the lower bottom plate by the aid of free sliding of the transverse pull rod in the second limiting sliding groove.
The length of the first limiting sliding groove and the second limiting sliding groove is determined according to the telescopic displacement of the structure under the temperature load, and is generally preferably 2-5 cm. For a one-unit concrete continuous beam with the span of 150m in a cold area, the half-unit expansion displacement is 3.8m by considering the temperature difference of 50 ℃.
Preferably, when the limiting energy dissipation assembly arranged along the forward direction is fixedly connected with the upper top plate and the limiting energy dissipation assembly arranged along the transverse direction is also fixedly connected with the lower bottom plate, the damping support is a fixed elastic-plastic damping support, pin holes are formed among the forward slide way, the transverse slide way and the guide block, and the limited-capacity shear pin is installed in the pin holes.
Preferably, when the limiting energy-consuming assembly arranged along the bridge direction is movably connected with the upper top plate and the limiting energy-consuming assembly arranged along the transverse bridge direction is fixedly connected with the lower bottom plate, the damping support is a one-way movable elastic-plastic damping support, only a pin hole is arranged between the transverse slideway and the guide block, and a shear pin with limited capacity is additionally arranged in the pin hole.
Preferably, when the limiting energy-consuming assemblies arranged along the forward bridge direction are movably connected with the upper top plate and the limiting energy-consuming assemblies arranged along the transverse bridge direction are movably connected with the lower bottom plate, the damping support is a bidirectional movable elastic-plastic damping support, and the pin holes are not arranged among the forward slide way, the transverse slide way and the guide block.
Preferably, the limiting energy dissipation assembly comprises a plurality of limiting rings with energy dissipation performance connected in series, and the number of the limiting rings can be 4, or more than 4 or less than 4. More preferably, each limiting ring is further provided with two arc structures tangent to the circle center of the limiting ring, and the design of the arc structures can enable the force-displacement action curve of the limiting ring to be fuller and the structure to be better. In addition, different limiting rings, an upper top plate, a lower bottom plate, a middle lining plate, a spherical crown, a forward pull rod and a transverse pull rod can be fixed through welding and the like, and meanwhile, steel strands can be wound. In order to facilitate connection with a limiting ring (namely, a limiting energy consumption assembly), the upper top plate, the lower bottom plate, the middle lining plate, the spherical crown and the like can adopt structures such as high-strength bolts and the like to lead out structures such as lug plates and limiting sliding grooves, and then the lug plates and the like are connected with the limiting ring. The limiting ring can be made of mild steel, or Q235, or Q345 steel with good energy consumption performance and fatigue performance.
Preferably, the width of the upper top plate along the transverse bridge direction and the width of the lower bottom plate along the transverse bridge direction meet the following requirements: the upper top plate and the lower bottom plate at least cover the central line of the limiting ring component connected with the upper top plate and the lower bottom plate respectively.
Preferably, the vertical clearance between the limiting ring assembly and the upper top plate and the vertical clearance between the limiting ring assembly and the lower bottom plate are 2-3 mm.
Preferably, buckling-restrained pressure rods are fixedly suspended below the limiting energy-consuming assemblies along the forward bridge direction and above the limiting energy-consuming assemblies along the transverse bridge direction respectively, and the vertical gap between each buckling-restrained pressure rod and each limiting energy-consuming assembly is 2-3 mm.
More preferably, the length of the buckling-restrained pressure bar is the same as that of the limiting energy dissipation assembly, and the strength of the buckling-restrained pressure bar is greater than that of the limiting energy dissipation assembly.
Preferably, the spherical cap is also provided with a stop block for limiting the rotation amplitude of the spherical cap and the middle lining plate.
The damping support can be a spherical steel support, a basin-type support and the like.
Under the normal operation condition of a bridge structure, the limiting energy dissipation assemblies such as the limiting rings are not stressed, when the bridge is influenced by temperature or other small external force, the spherical crown can keep the bridge upright by virtue of gravity, and the design of the limiting sliding grooves, the forward pull rods or the transverse pull rods and other structures also ensures that the support has certain slippage along the forward bridge direction or the transverse bridge direction, so that the forward slide way and the transverse slide way are matched to have certain slippage, and the damping support with the elastic-plastic structure is further ensured to adapt to the telescopic displacement of the main beam under the action of the temperature or the small external force, and the stability of the bridge is kept. When the bridge receives earthquake action or great striking, the external force that the bridge received increases, and when the external force that receives reached the maximum shearing force that the shear pin can bear, the shear pin was cut, and limit ring takes place reciprocating deformation, cuts down the horizontal force, controls the relative displacement of pier and bridge, prevents to cause the emergence of roof beam phenomenon because earthquake or striking girder.
Compared with the prior art, the invention has the following advantages:
the design of the limiting sliding groove allows the support to have certain slippage, and the limiting circular ring is not stressed under the normal operation condition of the bridge structure, so that the support is suitable for the telescopic deformation of the main beam under the temperature action.
And compared with the stay cable support, the circular ring component has the functions of energy consumption and limiting under the action of an earthquake.
And thirdly, compared with a speed locking device which is connected with an elastic-plastic steel damping device in series to adapt to telescopic displacement, the problems of oil leakage, blockage and the like do not exist.
And fourthly, different target constitutive parameters of the steel damping device can be obtained by adjusting the number, the radius, the wall thickness and the height of the circular rings.
Fifthly, the soft steel structure damping elements are connected with the support body through high-strength bolts. Can dismantle and install according to actual need, make things convenient for daily support maintenance and shake the back and change.
Drawings
Fig. 1 is a top view of a unidirectional movable elasto-plastic structural damping mount according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A shown in FIG. 1;
FIG. 3 is a cross-sectional view B-B shown in FIG. 1;
FIG. 4 is a cross-sectional view C-C shown in FIG. 1;
FIG. 5 is a cross-sectional view taken along line D-D of FIG. 1;
FIG. 6 is a top view of the section E-E shown in FIG. 4;
FIG. 7 is a bottom view of the cross-sectional F-F view shown in FIG. 4;
FIG. 8 is a schematic view of the pin construction;
FIG. 9 is a schematic view of a wound steel strand;
FIG. 10 is a force-displacement curve for a spacing ring;
FIG. 11 is a horizontal plan view of a damping support with a fixed elastic-plastic structure according to a second embodiment of the present invention;
FIG. 12 is a cross-sectional view B-B shown in FIG. 11;
FIG. 13 is a cross-sectional view C-C shown in FIG. 11;
FIG. 14 is a top view of the section E-E shown in FIG. 13;
FIG. 15 is a bottom view of the section F-F shown in FIG. 13;
fig. 16 is a top view of a damping mount of a bidirectional movable elasto-plastic structure according to a third embodiment of the present invention;
FIG. 17 is a cross-sectional view B-B shown in FIG. 16;
FIG. 18 is a cross-sectional view D-D shown in FIG. 16;
FIG. 19 is a cross-sectional view of section E-E shown in FIG. 18;
fig. 20 is a sectional view of the portion F-F shown in fig. 18.
The reference numbers in the figures indicate:
1-upper top plate, 2-stainless steel plate, 3-guide block, 4-polytetrafluoroethylene plate, 5-spherical cap, 6-middle lining plate, 7-pin hole, 8-limited capacity shear pin, 9-lower bottom plate, 10-first limiting chute, 11-limiting ring, 12-forward pull rod, 13-buckling-preventing pressure bar, 14-first ear plate, 15-forward slideway, 16-transverse slideway, 17-second ear plate, 18-third ear plate, 19-steel strand, 20-fourth ear plate, 21-transverse pull rod, 22-second limiting chute and 23-high-strength bolt.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example one
A damping support with a one-way movable elastic-plastic mild steel structure, the structure of which is shown in fig. 1 to 7, comprising:
a support module: the spherical cap comprises an upper top plate 1, a spherical cap 5, a middle lining plate 6 and a lower bottom plate 9 which are overlapped from top to bottom, wherein sliding surfaces which move relatively along a forward bridge direction and a transverse bridge direction are respectively processed between the upper top plate 1 and the spherical cap 5 and between the lower bottom plate 9 and the middle lining plate 6, and the spherical cap 5 is connected with the middle lining plate 6 through spherical surface contact;
a damping module: the energy-saving device comprises limiting energy-consuming components which are arranged along the bridge direction and the transverse bridge direction respectively, wherein the two ends of the limiting energy-consuming components arranged along the bridge direction are connected with an upper top plate 1 and a spherical crown 5 respectively, and the two ends of the limiting energy-consuming components arranged along the transverse bridge direction are connected with a lower bottom plate 9 and a middle lining plate 6 respectively.
The limiting energy dissipation assembly in the embodiment is formed by connecting a plurality of limiting rings 11 in series, and two circular arc structures tangent to the circle center can be additionally arranged in the middle of each limiting ring 11 to improve the mechanical property.
Along the bridge direction, an upper top plate 1 of the support is connected with a first limiting sliding groove 10 through a high-strength bolt 23, a spherical crown 5 is connected with a first lug plate 14 through the high-strength bolt 23, one end side of a limiting ring 11 is provided with a forward pull rod 12, the forward pull rod 12 is clamped into the first limiting sliding groove 10 and can freely slide in the first limiting sliding groove 10, and the other end side of the limiting ring 11 is connected with the first lug plate 14 on the spherical crown;
along the transverse bridge direction, the lower bottom plate 9 of the support is connected with a second lug plate 17 through a high-strength bolt 23, the middle lining plate 6 is connected with a third lug plate 18 through the high-strength bolt 23, and two end sides of the limiting ring 11 are respectively connected with the second lug plate 17 and the third lug plate 18. The limiting ring 11 is made of steel with good energy consumption performance and fatigue performance, such as mild steel, Q235 or Q345, and the like, and one or more limiting rings can be arranged, the material of the limiting ring 11 in the embodiment is the mild steel, and the number of the limiting rings is 4. The limiting ring 11 is connected with the forward pull rod 12, the limiting ring 11 is connected with the lug plate, and the limiting ring 11 is connected with the limiting ring 11 in a welding mode, and meanwhile, a steel strand 19 is wound, as shown in fig. 9.
A forward slide way 15 is arranged on the upper top plate 1, a guide block 3 is arranged on the spherical crown 5, a transverse slide way 16 is arranged on the lower bottom plate 9, and a guide block 3 is arranged on the middle lining plate 6. The sliding surfaces between the guide block 3 and the transverse slideway 16 and the forward slideway 15 are respectively provided with a polytetrafluoroethylene plate 4 and a stainless steel plate 2 in a matching way. The transverse runners 16 and the guide blocks 3 are provided with pin holes 7, and the limited-capacity shear 8 pins are placed in the pin holes 7, as shown in fig. 8.
The lower part of the first limit chute 10 connected with the upper top plate 1 and the ear plate 17 of the lower bottom plate are respectively provided with an anti-buckling pressure bar 13 with one fixed end, the length of the anti-buckling pressure bar 13 is the same as that of the limit ring 11, and the vertical gap between the anti-buckling pressure bar 13 and the limit ring 11 is 2-3mm, 2mm is selected in the embodiment. The strength of the buckling-restrained pressure bar 13 is greater than that of the limiting ring 11. Along the bridge direction, the width of the upper top plate 1 at least covers the central line of the limiting circular ring 11, the vertical gap between the limiting circular ring 11 and the upper top plate 1 is 2-3mm, and 2mm is selected in the embodiment; along the transverse bridge direction, the width of the lower bottom plate 9 at least covers the central line of the limiting ring 11, the vertical gap between the limiting ring 11 and the lower bottom plate 9 is 2-3mm, and 2mm is selected in the embodiment. The length of spacing draw-in groove is decided according to the flexible displacement of structure under the temperature load, generally preferably takes 2-5cm, and 2mm is selected to this embodiment. For a one-unit concrete continuous beam with the span of 150m in a cold area, the half-unit telescopic displacement is 3.8cm by considering the temperature difference of 50 ℃.
Referring to fig. 10, the limiting ring 11 has a radius of 175mm, a sectional size of 30 × 150mm, a length of 320mm of the inner liner arc plate, and a sectional size of 20 × 150 mm.
As shown in fig. 11, the exemplary stop ring 11 provides a horizontal force of 300kN when deformed by plus or minus 5 cm. For the present example, two rows of said limit rings 11 are arranged side by side respectively along the bridge direction and along the transverse bridge direction, i.e. a horizontal force of 600kN can be provided in each direction, since each row is 4, they are in series relation, the designed stroke under earthquake is plus or minus 20cm (5cm x 4).
The above description is directed to the unidirectional movable bidirectional elastic-plastic mild steel structure damping support, and of course, the damping support may also be a fixed elastic-plastic mild steel structure damping support, or a bidirectional movable elastic-plastic mild steel structure damping support.
Example two
A fixed elastic-plastic structure damping support is structurally shown in figures 12-16, and is different from the first embodiment in that along the bridge direction, a first limiting chute 10 connected with an upper top plate 1 of the support through a high-strength bolt 23 is replaced by a fourth lug plate 20, a forward pull rod 12 on a limiting ring 11 is removed, and two end sides of the limiting ring 11 are fixedly connected with the fourth lug plate 20 and the first lug plate 14 respectively. Meanwhile, a forward slide way 15 on the upper top plate 1 and a guide block 3 on the spherical cap 5 are additionally provided with pin holes 7, and a limited-capacity shear pin 8 is arranged in the pin holes 7.
EXAMPLE III
The structure of the damping support with the bidirectional movable elastic-plastic soft steel structure is shown in fig. 17-20, and is different from the first embodiment in that the second lug plate 17 connected with the support lower base plate 9 through the high-strength bolt 23 is replaced by a second limiting sliding groove 22, the middle lining plate 6 is connected with a third lug plate 18 through the high-strength bolt 23, one end side of the limiting circular ring 11 is provided with a transverse pull rod 21, the transverse pull rod 21 is clamped into the second limiting sliding groove 22 connected with the lower base plate and can freely slide, and the other end side of the limiting circular ring 11 is connected with the lug plate 18 of the middle lining plate. At the same time, the pin holes 7 and limited capacity shear pins 8 on the lateral runners 16 of the lower base plate 9 and on the lower guide blocks 3 of the intermediate liner 6 are removed.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (5)
1. An elasto-plastic structural damping mount, comprising:
a support module: the spherical cap comprises an upper top plate (1), a spherical crown (5), a middle lining plate (6) and a lower bottom plate (9) which are stacked from top to bottom, wherein sliding surfaces which move relatively along the forward bridge direction and the transverse bridge direction are respectively processed between the upper top plate (1) and the spherical crown (5) and between the lower bottom plate (9) and the middle lining plate (6), and the spherical crown (5) and the middle lining plate (6) are connected through spherical surface contact;
a damping module: the energy-saving device comprises limiting energy-consuming components which are respectively arranged along the forward bridge direction and the transverse bridge direction, wherein two ends of the limiting energy-consuming components arranged along the forward bridge direction are respectively connected with an upper top plate (1) and a spherical crown (5), and two ends of the limiting energy-consuming components arranged along the transverse bridge direction are respectively connected with a lower bottom plate (9) and an intermediate lining plate (6);
the limiting energy dissipation assembly comprises a plurality of limiting rings (11) which are connected in series and have energy dissipation performance, and each limiting ring (11) is also internally provided with two arc structures which are tangent to the circle center of the limiting ring (11);
a forward slide way (15) along the forward bridge direction is processed on the lower surface of the upper top plate (1), a transverse slide way (16) along the transverse bridge direction is processed on the upper surface of the lower bottom plate, and guide blocks (3) which are matched and placed in the forward slide way (15) and the transverse slide way (16) are respectively installed on the upper surface of the spherical crown (5) and the lower surface of the middle lining plate (6);
butt joint pin holes (7) are arranged or pin holes (7) are not arranged between the forward slide way (15), the transverse slide way (16) and the guide block (3), and when the butt joint pin holes (7) are arranged, limited capacity shear pins (8) with two ends respectively arranged in the forward slide way (15) or the transverse slide way (16) and the guide block (3) are also arranged in the pin holes (7);
one end of a limiting energy consumption assembly arranged along the bridge direction is fixedly connected with the spherical crown (5), and the other end of the limiting energy consumption assembly is fixedly or movably connected with the upper top plate (1);
one end of the limiting energy consumption component along the transverse bridge direction is fixedly connected with the middle lining plate (6), and the other end of the limiting energy consumption component is fixedly or movably connected with the lower bottom plate (9);
when the limiting energy dissipation assembly along the forward bridge direction is movably connected with the upper top plate (1), a first limiting sliding groove (10) hung below the upper top plate is arranged at the end part of the upper top plate (1), a forward pull rod (12) freely sliding along the inner wall of the first limiting sliding groove is installed in the first limiting sliding groove (10), the end part of the limiting energy dissipation assembly along the forward bridge direction is fixedly connected with the forward pull rod (12), and the limiting energy dissipation assembly along the forward bridge direction is movably connected with the upper top plate (1) by utilizing the free sliding of the forward pull rod (12) in the first limiting sliding groove (10);
when the limiting energy dissipation assembly in the transverse bridge direction is movably connected with the lower base plate (9), a second limiting sliding groove (22) suspended above the lower base plate is arranged at the end position of the lower base plate (9), a transverse pull rod (21) freely sliding along the inner wall of the second limiting sliding groove is installed in the second limiting sliding groove (22), the end part of the limiting energy dissipation assembly in the transverse bridge direction is fixedly connected with the transverse pull rod (12), and the limiting energy dissipation assembly in the transverse bridge direction is movably connected with the lower base plate (9) by the aid of the free sliding of the transverse pull rod (21) in the second limiting sliding groove (22).
2. The damping support with the elastic-plastic structure as claimed in claim 1, wherein when the limiting energy dissipation assembly arranged along the bridge direction is fixedly connected with the upper top plate (1) and the limiting energy dissipation assembly arranged along the transverse bridge direction is also fixedly connected with the lower bottom plate (9), the damping support is a fixed elastic-plastic damping support, pin holes (7) are formed among the forward slideway (15), the transverse slideway (16) and the guide block (3), and the limited-capacity shear pin (8) is installed in each pin hole (7);
when the limiting energy dissipation assembly arranged along the bridge direction is movably connected with the upper top plate (1) and the limiting energy dissipation assembly arranged along the transverse bridge direction is fixedly connected with the lower bottom plate (9), the damping support is a one-way movable elastic-plastic damping support, and at the moment, a pin hole (7) is arranged between the transverse slide way (16) and the guide block (3);
when the limiting energy dissipation assembly arranged along the forward bridge direction is movably connected with the upper top plate (1) and the limiting energy dissipation assembly arranged along the transverse bridge direction is movably connected with the lower bottom plate (9), the damping support is a bidirectional movable elastic-plastic damping support, and at the moment, the pin holes (7) are not arranged among the forward slide way (15), the transverse slide way (16) and the guide block (3).
3. An elasto-plastic structural damping bearer according to claim 1, characterised in that the width of the upper top plate (1) in the transverse direction and the width of the lower bottom plate (9) in the downbridge direction are such that: the upper top plate (1) and the lower bottom plate (9) at least cover the central line of a limiting ring (11) component (11) connected with the upper top plate and the lower bottom plate respectively;
and the vertical clearance between the limiting ring (11) assembly (11) and the upper top plate (1) and the lower bottom plate (9) is 2-3 mm.
4. An elastic-plastic structure damping support according to claim 1 or 3, characterized in that buckling-restrained pressure bars (13) are fixedly suspended below the limiting energy dissipation assemblies along the forward direction of the bridge and above the limiting energy dissipation assemblies along the transverse direction of the bridge respectively, and the vertical gap between the buckling-restrained pressure bars (13) and the limiting energy dissipation assemblies is 2-3 mm.
5. An elasto-plastic structural damping support according to claim 4, characterized in that the buckling-restrained brace (13) is the same length as the energy-dissipating limiting component, and the strength of the buckling-restrained brace (13) is greater than that of the energy-dissipating limiting component.
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| CN201810258501.8A CN110306426B (en) | 2018-03-27 | 2018-03-27 | Damping support with elastic-plastic structure |
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| CN201810258501.8A CN110306426B (en) | 2018-03-27 | 2018-03-27 | Damping support with elastic-plastic structure |
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| CN110306426B true CN110306426B (en) | 2020-10-02 |
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| KR100887565B1 (en) * | 2007-09-11 | 2009-03-09 | 김성원 | Seismic isolating device with multi-damping fuction |
| WO2009124589A1 (en) * | 2008-04-09 | 2009-10-15 | Alga Spa | Bearings acting as energy dissipating devices |
| CN202850206U (en) * | 2012-05-21 | 2013-04-03 | 株洲时代新材料科技股份有限公司 | Friction pendulum support |
| CN202954294U (en) * | 2012-12-13 | 2013-05-29 | 陕西省交通规划设计研究院 | Two-way damping energy-dissipating bridge pot bearing |
| CN204000584U (en) * | 2014-05-29 | 2014-12-10 | 武汉鑫拓力工程技术有限公司 | A kind of damping supporting seat for damping |
| CN204919310U (en) * | 2015-07-10 | 2015-12-30 | 柳州东方工程橡胶制品有限公司 | Elastoplasticity steel construction damping support |
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