CN114427191A - Arch bridge type tensile conical variable-curvature variable-friction pendulum shock insulation support - Google Patents
Arch bridge type tensile conical variable-curvature variable-friction pendulum shock insulation support Download PDFInfo
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- CN114427191A CN114427191A CN202210230957.XA CN202210230957A CN114427191A CN 114427191 A CN114427191 A CN 114427191A CN 202210230957 A CN202210230957 A CN 202210230957A CN 114427191 A CN114427191 A CN 114427191A
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- sliding
- arch
- variable
- block
- bridge type
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention provides an arch bridge type tensile conical variable-curvature variable-friction pendulum seismic isolation support which comprises: the first sliding arch, the hinged sliding block set and the second sliding arch; the first sliding arch and the second sliding arch are connected in a sliding mode through the hinged sliding block set, and the first sliding arch and the second sliding arch are in parallel and orthogonal. The first sliding arch and the second sliding arch can slide along the orthogonal direction, so that bidirectional decoupling is realized, and the differential shock insulation design method is suitable for differential shock insulation design of a structure with larger difference of dynamic characteristics in the x direction and the y direction.
Description
Technical Field
The invention relates to the technical field of shock insulation, in particular to an arch bridge type tensile conical curvature-variable friction pendulum shock insulation support.
Background
Earthquake is one of natural disasters which cause the greatest harm to human beings, and the earthquake isolation technology can effectively reduce the damage of the earthquake. Although the traditional friction pendulum seismic isolation support has the advantages of high vertical bearing capacity, self-resetting and the like, the traditional friction pendulum seismic isolation support cannot bear tension and coupling in all directions, and the parameters of the support are not obviously changed under the action of earthquakes at different levels. In addition, under the action of seismic waves containing long-period pulses, low-frequency resonance is easy to occur in a seismic isolation structure, and the seismic response can be amplified to cause the support to be pulled unstably to generate huge damage. These drawbacks limit the range of application of the friction pendulum supports, so that the use of seismic isolation techniques cannot be rapidly popularized nationwide.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to provide an arch bridge type tensile conical variable-curvature variable-friction pendulum seismic isolation support, so that the support has certain self-adaptive capacity under the action of different levels of earthquakes in tensile, rigidity and damping, and is decoupled in the orthogonal direction.
The invention provides an arch bridge type tensile conical variable-curvature variable-friction pendulum seismic isolation support which comprises: the first sliding arch, the hinged sliding block set and the second sliding arch; the first sliding arch and the second sliding arch are connected in a sliding mode through the hinged sliding block set, and the first sliding arch and the second sliding arch are in parallel and orthogonal.
Preferably, the first slip arch comprises: the first sliding arch top plate, the first sliding arch main body and the first sliding arch sliding surface; the first sliding arch sliding surfaces are positioned at two sides of the first sliding arch main body, and first grooves are formed in the first sliding arch sliding surfaces; the first sliding arch crown plate is positioned at the bottom of the first sliding arch main body; and two ends of the bottom of the first sliding arch main body are respectively provided with a first limiting block.
Preferably, a plurality of first bolt holes are formed in the first sliding crown plate.
Preferably, the first limiting block is provided with an elastic energy dissipation material.
Preferably, the second slip arch includes: the second sliding arch bottom plate, the second sliding arch main body and the second sliding arch sliding surface; the second sliding arch sliding surface is positioned at the top of the second sliding arch main body and is provided with a second groove; the second sliding arch bottom plate is positioned at the bottom of the second sliding arch main body; and two ends of the top of the second sliding arch main body are respectively provided with a second limiting block.
Preferably, a plurality of second bolt holes are formed in the second sliding arch bottom plate.
Preferably, the second limiting block is provided with an elastic energy dissipation material.
Preferably, the hinge slider group includes: the device comprises a first sliding block, a supporting block and a second sliding block; the first sliding block is clamped in the first groove, and the second sliding block is clamped in the second groove; the supporting block is arranged between the first sliding block and the second sliding block.
Preferably, the first sliding block is connected with the supporting block through a first bolt; the second sliding block is connected with the supporting block through a second bolt.
Preferably, the width of the first sliding block sliding surface is matched with the width of the first sliding arch main body; the width of the sliding surface of the second sliding block is matched with that of the sliding arch main body.
Compared with the prior art, the invention has the beneficial effects that: the hinged sliding block set slides along the tracks orthogonal to the first sliding arch and the second sliding arch, so that bidirectional decoupling is realized, and differential shock insulation design is performed on a structure with a large difference between the dynamic characteristics in the x direction and the y direction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of an arch bridge type tensile conical variable-curvature variable-friction pendulum seismic isolation support according to an embodiment of the invention;
FIG. 2 is an explosion structure diagram of an arch bridge type tensile conical variable curvature variable friction pendulum seismic isolation support according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a movement track of the first slider or the second slider according to the embodiment of the present invention;
FIG. 4 is a schematic diagram of a hysteresis curve of the arch bridge type tensile conical variable curvature variable friction pendulum seismic isolation support according to the embodiment of the invention;
FIG. 5 is a schematic diagram of the change of the rigidity of the arch bridge type tensile conical variable-curvature variable-friction pendulum seismic isolation support along with the horizontal displacement of the first sliding block or the second sliding block in the embodiment of the invention;
fig. 6 is a schematic diagram of the change of the control period of the arch bridge type tensile conical variable-curvature variable-friction pendulum seismic isolation support along with the horizontal displacement of the first sliding block or the second sliding block in the embodiment of the invention.
Description of reference numerals:
1: a first glide arch; 1-1: a first bolt hole; 1-2: a first slip dome plate; 1-3: a first slip arch body; 1-4: a first groove; 1-5: a first slip arch slip plane; 1-6: a first stopper; 2: a hinged slider group; 2-1: a first slider; 2-2: a supporting block; 2-3: a first bolt; 2-4: a second bolt; 2-5: a second slider; 3: a second slip arch; 3-1: a second bolt hole; 3-2: a second slip arch base plate; 3-3: a second slip arch body; 3-4: a second groove; 3-5: a second slip arch slip plane; 3-6: and a second limiting block.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 6, the present invention provides an arch bridge type tensile conical variable curvature variable friction pendulum seismic isolation bearing, comprising: the first sliding arch 1, the hinged sliding block set 2 and the second sliding arch 3. The first sliding arch 1 and the second sliding arch 3 are connected in a sliding mode through a hinged sliding block set 2, and the first sliding arch 1 and the second sliding arch 3 are parallel and orthogonal.
In some embodiments, the first glide arch 1 includes an integrally formed first glide arch top plate 1-2, a first glide arch body 1-3, and a first glide arch glide plane 1-5. The first sliding arch sliding surface 1-5 is positioned at the bottom of the first sliding arch main body 1-3, and the first sliding arch sliding surface 1-5 is provided with a first groove 1-4. The first sliding arch top plate 1-2 is positioned on the top of the first sliding arch main body 1-3. Two ends of the bottom of the first sliding arch main body 1-3 are respectively provided with a first limiting block 1-6. A plurality of first bolt holes 1-1 are formed in the first sliding arch top plate 1-2. The first sliding arch 1 is connected with a lower strut of the structure through a first bolt hole 1-1, and an elastic energy dissipation material is arranged on a first limiting block 1-6.
In some embodiments, the second glide arch 3 comprises: a second sliding arch bottom plate 3-2, a second sliding arch main body 3-3 and a second sliding arch sliding surface 3-5. The second sliding arch sliding surface 3-5 is positioned at the top of the second sliding arch main body 3-3, and a second groove 3-4 is arranged on the second sliding arch sliding surface 3-5. The second sliding arch bottom plate 3-2 is positioned at the bottom of the second sliding arch main body 3-3. Two ends of the top of the second sliding arch main body 3-3 are respectively provided with a second limiting block 3-6. A plurality of second bolt holes 3-1 are arranged on the second sliding arch bottom plate 3-2. The second sliding arch 3 is connected with the foundation upper buttress through a second bolt hole 3-1. The second limiting blocks 3-6 are provided with elastic energy dissipation materials.
The center lines of the first slip arch slip plane 1-5 of the first slip arch 1 and the second slip arch slip plane 3-5 of the second slip arch 3 are orthogonal.
In some embodiments, the hinge-slide group 2 includes: a first slide block 2-1, a supporting block 2-2 and a second slide block 2-5. The first sliding block 2-1 is clamped in the first groove 1-4, and the sliding surface of the first sliding block 2-1 is contacted with the sliding surface 1-5 of the first sliding arch. The second sliding block 2-5 is clamped in the second groove 3-4, and the second sliding block 2-5 is in contact with the sliding surface 3-5 of the second sliding arch. The supporting block 2-2 is arranged between the first slider 2-1 and the second slider 2-5. The first sliding block 2-1 is connected with the supporting block 2-2 through a first bolt 2-3. The second sliding block 2-5 is connected with the supporting block 2-2 through a second bolt 2-4. The cross section of the sliding block is slightly smaller than that of the groove, so that stable transition at the curvature change position is ensured. Preferably, the supporting block 2-2 is a steel block.
In some embodiments, the first slip arch slip surface 1-5 and the second slip arch slip surface 3-5 are each comprised of a central arcuate slip surface and linear slip surfaces with both sides tangent to the ends of the arcuate slip surface. The motion tracks of the first slide block 2-1 and the second slide block 2-5 are circular arcs with the middle curvature of R and the horizontal width limit value of dc(ii) a Both ends are straight lines, and the horizontal width limit value is dl. Two level limit parameters can be adjusted according to specific seismic isolation requirements.
In some embodiments, the width of the sliding surface of the first sliding block 2-1 is matched with the width of the first sliding arch main body 1-3; the width of the sliding surface of the second sliding block 2-5 is matched with the width of the second sliding arch main body 3-3.
Coefficient of friction mu of the first slip arch 1sHorizontal limit value d of arc-shaped sliding surfacec1Horizontal limit d of linear sliding surfacel1Coefficient of friction mu of the performance control parameter with the second slip arch 3dHorizontal limit value d of arc-shaped sliding surfacec2Horizontal limit d of linear sliding surfacel2The performance control parameters may be different and are determined according to the dynamic characteristics of the structure in both directions x and y.
The force-displacement relation, rigidity and period of the arch bridge type tensile conical variable-curvature variable-friction pendulum seismic isolation support obtained according to the design are shown in the graph of the change trend along with the horizontal displacement of the sliding block in fig. 4, 5 and 6. The rigidity and the period show inverse proportion relation along with the displacement, which is beneficial to increasing the shock insulation period and reducing the earthquake action.
Through reasonable design of the support parameter mu1、μ2、dc、dc2、dlThe support can be used in various seismic intensity areas and areas accompanied by long-period pulse seismic. When the earthquake acting force exceeds the static friction force of the support in the corresponding direction, the sliding block and the sliding arch move, and the system starts to isolate the earthquake; when the earthquake action is further increased, the slide block slides to two sides of the track to break through the limit value dcThe rigidity softening mechanism acts, the earthquake action is greatly reduced, and simultaneously the shock insulation period begins to change; when the seismic action increases again, the limit d is taken into account in the designlCoefficient of friction with straight line segment mu2The earthquake action can be further reduced; when the limit value is exceeded, the limit value of the limit block and the energy dissipation material on the limit block can limit the displacement of the support, the earthquake transmission energy is consumed, the groove is buckled by the sliding block, and the sliding block can be prevented from being damaged by tension due to the constraint of the bolt.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides an arch bridge type tensile toper variable curvature becomes friction pendulum isolation bearing which characterized in that includes: the device comprises a first sliding arch (1), a hinged sliding block set (2) and a second sliding arch (3); the first sliding arch (1) and the second sliding arch (3) are connected in a sliding mode through the hinged sliding block set (2), and the first sliding arch (1) and the second sliding arch (3) are in parallel and orthogonal.
2. The arch bridge type tensile tapered variable-curvature variable-friction pendulum seismic isolation bearing according to claim 1, wherein the first sliding arch (1) comprises: a first sliding arch top plate (1-2), a first sliding arch main body (1-3) and a first sliding arch sliding surface (1-5); the first sliding arch sliding surface (1-5) is positioned at the bottom of the first sliding arch main body (1-3), and a first groove (1-4) is formed in the first sliding arch sliding surface (1-5); the first sliding arch top plate (1-2) is positioned at the top of the first sliding arch main body (1-3); two ends of the bottom of the first sliding arch main body (1-3) are respectively provided with a first limiting block (1-6).
3. The arch bridge type tensile tapered variable-curvature variable-friction pendulum seismic isolation bearing according to claim 2, wherein a plurality of first bolt holes (1-1) are formed in the first sliding arch top plate (1-2).
4. The arch bridge type tensile tapered variable-curvature friction pendulum seismic isolation bearing according to claim 2, wherein elastic energy dissipation materials are arranged on the first limiting blocks (1-6).
5. The arched bridge type tensile tapered variable-curvature variable-friction pendulum seismic isolation bearing according to claim 2, characterized in that the second sliding arch (3) comprises: a second sliding arch bottom plate (3-2), a second sliding arch main body (3-3) and a second sliding arch sliding surface (3-5); the second sliding arch sliding surface (3-5) is positioned at the top of the second sliding arch main body (3-3), and a second groove (3-4) is formed in the second sliding arch sliding surface (3-5); the second sliding arch bottom plate (3-2) is positioned at the bottom of the second sliding arch main body (3-3); two ends of the top of the second sliding arch main body (3-3) are respectively provided with a second limiting block (3-6).
6. The arch bridge type tensile conical variable-curvature friction pendulum seismic isolation bearing according to claim 5, characterized in that a plurality of second bolt holes (3-1) are arranged on the second sliding arch bottom plate (3-2).
7. The arch bridge type tensile tapered variable-curvature friction pendulum seismic isolation bearing according to claim 6, wherein elastic energy dissipation materials are arranged on the second limiting blocks (3-6).
8. The arch bridge type tensile tapered variable-curvature variable-friction pendulum seismic isolation bearing according to claim 5, wherein the hinged slider group (2) comprises: the device comprises a first sliding block (2-1), a supporting block (2-2) and a second sliding block (2-5); the first sliding block (2-1) is clamped into the first groove (1-4), and the second sliding block (2-5) is clamped into the second groove (3-4); the supporting block (2-2) is arranged between the first sliding block (2-1) and the second sliding block (2-5).
9. The arch bridge type tensile tapered variable-curvature variable-friction pendulum seismic isolation bearing according to claim 8, wherein the first sliding block (2-1) is connected with the supporting block (2-2) through a first bolt (2-3); the second sliding block (2-5) is connected with the supporting block (2-2) through a second bolt (2-4).
10. The arch bridge type tensile tapered variable-curvature variable-friction pendulum seismic isolation bearing according to claim 5, wherein the width of the sliding surface of the first sliding block (2-1) is matched with the width of the first sliding arch body (1-3); the width of the sliding surface of the second sliding block (2-5) is matched with the width of the second sliding arch main body (3-3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210230957.XA CN114427191A (en) | 2022-03-07 | 2022-03-07 | Arch bridge type tensile conical variable-curvature variable-friction pendulum shock insulation support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210230957.XA CN114427191A (en) | 2022-03-07 | 2022-03-07 | Arch bridge type tensile conical variable-curvature variable-friction pendulum shock insulation support |
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| CN114427191A true CN114427191A (en) | 2022-05-03 |
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| CN202210230957.XA Pending CN114427191A (en) | 2022-03-07 | 2022-03-07 | Arch bridge type tensile conical variable-curvature variable-friction pendulum shock insulation support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809313A (en) * | 2022-05-18 | 2022-07-29 | 丰泽智能装备股份有限公司 | Anti-drawing guide rail type friction pendulum support |
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| CN113897856A (en) * | 2021-09-09 | 2022-01-07 | 洛阳双瑞特种装备有限公司 | Tension-compression force measurement support |
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| US20070044395A1 (en) * | 2005-08-24 | 2007-03-01 | Lyan-Ywan Lu | Seismic isolator with variable curvature |
| US20180252287A1 (en) * | 2015-08-28 | 2018-09-06 | Fm Energie Gmbh & Co. Kg | Vibration absorber having a rotating mass |
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