CN211368356U - Bridge hyperboloid friction pendulum support with prevent roof beam function that falls - Google Patents
Bridge hyperboloid friction pendulum support with prevent roof beam function that falls Download PDFInfo
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- CN211368356U CN211368356U CN201921584885.9U CN201921584885U CN211368356U CN 211368356 U CN211368356 U CN 211368356U CN 201921584885 U CN201921584885 U CN 201921584885U CN 211368356 U CN211368356 U CN 211368356U
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Abstract
The utility model belongs to the technical field of bridge supports, in particular to a bridge hyperboloid friction pendulum support with a beam falling prevention function, which comprises an upper wear-resistant plate, a lower wear-resistant plate, an upper support plate, a lower support plate and a spherical crown; the top surface of the spherical crown is an upper convex spherical surface matched with the upper concave spherical surface, and the bottom surface of the spherical crown is a lower convex spherical surface matched with the lower concave spherical surface; the edge of the upper concave spherical surface and the edge of the lower concave spherical surface are both provided with anti-falling beam notches; the side of bottom suspension bedplate is equipped with spacing board subassembly, and the lower extreme of spacing board subassembly is located below the upper surface of bottom suspension bedplate, and it is fixed with the upper bracket board that the shear pin is passed through to the upper end of spacing board subassembly. The utility model discloses a bridge hyperboloid friction pendulum support not only can solve under the current support spherical surface chromium plating and bring environmental pollution or the higher scheduling problem of cladding stainless steel cost, but also has and prevents falling roof beam function and shock attenuation effect.
Description
Technical Field
The utility model belongs to the technical field of the bridge beam supports, concretely relates to bridge hyperboloid friction pendulum support that has and prevents falling roof beam function for connecting bridge roof beam body and pier.
Background
At present, friction pendulum supports are commonly used on domestic railway and highway bridges to support upper beam structures and bridge deck loads. The existing friction pendulum support usually comprises an upper support plate and a lower support plate, wherein anchor rods are respectively arranged at the upper part of the upper support plate and the bottom part of the lower support plate; be provided with the steel spherical crown between upper bracket board and the undersetting board, the steel spherical crown is the structure of upper and lower all spheres, is provided with the antifriction plate on the steel spherical crown between sphere and the upper bracket board, is provided with down the antifriction plate between sphere and the undersetting board under the steel spherical crown, and upper bracket board and undersetting board sphere face are direct to the steel sheet surface.
When the friction pendulum support is used, the sliding and rotating functions of the friction pendulum support must be guaranteed through the steel spherical crown to meet the requirements of expansion and contraction phenomena caused by environmental temperature change at a beam end and the bending phenomena caused by dynamic load of a bridge deck. The steel ball crown is made of structural steel which is the same as the upper support plate and the lower support plate, and in order to enable the spherical surface of the steel ball crown, which is in contact with the lower wear-resisting plate, to have very small roughness and smaller friction coefficient, two modes of lower spherical surface chromium plating or spherical surface stainless steel plate coating can be adopted according to domestic relevant railway and highway standards. The chromium plating on the surface of the lower spherical surface of the steel spherical crown can solve the problem of difficult surface protection of large and ultra-large friction pendulum supports, but also brings the problem of environmental pollution; and the problems of uneven plating layer on the lower spherical surface, weak adhesive force, rusting of a chromium layer falling body and the like exist. The stainless steel plate is coated on the lower spherical surface of the steel spherical crown, so that chromium plating is avoided, but the manufacturing process of the steel spherical crown is increased, the manufacturing period of the friction pendulum support is prolonged, a large amount of tooling equipment is needed, and the manufacturing cost of the friction pendulum support is increased; meanwhile, the stainless steel plate cannot be tightly attached to the body of the steel piece, and the inside of the stainless steel plate is hollow, so that the shape and position size of the surface of the steel ball crown is changed. In addition, when the bridge is subjected to an earthquake, the bridge pier and the bridge body can be damaged, even a beam falling event occurs, so that not only are life and property losses caused, but also the interruption of a traffic life line and the loss of a first opportunity for disaster relief are caused, and the consequences cannot be compensated; the existing friction pendulum support cannot play a role in preventing a beam from falling and effectively dissipating energy because the swing surface is a spherical surface and only sliding energy dissipation between the stainless steel plate and the wear-resistant plate is adopted.
Disclosure of Invention
In order to overcome the not enough of above-mentioned prior art existence, the utility model aims at providing a bridge hyperboloid friction pendulum support with prevent falling roof beam function not only can solve under the current support spherical surface chromium plating and bring environmental pollution or the higher scheduling problem of cladding stainless steel cost, but also has and prevents falling roof beam function and shock attenuation effect.
In order to achieve the purpose, the technical scheme of the utility model is a bridge hyperboloid friction pendulum support with a beam falling prevention function, which comprises an upper wear-resistant plate, a lower wear-resistant plate, an upper support plate with an upper concave spherical surface at the bottom surface, a lower support plate with a lower concave spherical surface at the top surface, and a spherical crown arranged between the upper support plate and the lower support plate; the top surface of the spherical crown is an upper convex spherical surface matched with the upper concave spherical surface, and the bottom surface of the spherical crown is a lower convex spherical surface matched with the lower concave spherical surface; the edge of the upper concave spherical surface and the edge of the lower concave spherical surface are both provided with anti-falling beam notches; the side of bottom suspension bedplate is equipped with spacing board subassembly, the upper end of bottom suspension bedplate is at least partly stretched into the inboard of spacing board subassembly, the upper end of spacing board subassembly through the shear pin with it is fixed to go up the bedplate.
Furthermore, an upper wear-resisting plate is arranged between the upper concave spherical surface and the upper convex spherical surface, and a lower wear-resisting plate is arranged between the lower concave spherical surface and the lower convex spherical surface.
Further, the limiting plate assembly comprises a plurality of limiting plates, the lower end of each limiting plate is located below the upper surface of the lower support plate, and the upper end of each limiting plate is fixed with the upper support plate through a shear pin; and the plurality of limiting plates are arranged along the circumferential direction of the upper end of the lower support plate at intervals.
Furthermore, the size of the upper concave spherical surface is larger than that of the upper convex spherical surface, and the size of the lower concave spherical surface is larger than that of the lower convex spherical surface.
Furthermore, the spherical crown is an aluminum alloy spherical crown and is made of forged aluminum alloy with the brand number of 6A 02.
Further, the edge of the upper support plate is connected with the edge of the lower support plate through a connecting plate component.
Furthermore, the connecting plate assembly comprises a plurality of connecting plates, and two ends of each connecting plate are respectively connected with the edge of the upper support plate and the edge of the lower support plate; and the plurality of limiting plates are arranged along the circumferential direction of the upper support plate at intervals.
Furthermore, a plurality of upper anchor rods used for being connected with the bridge body are arranged at the upper end of the upper support plate, and a plurality of lower anchor rods used for being connected with the bridge pier are arranged at the lower end of the lower support plate.
Further, dustproof bounding wall subassembly is installed to the side of upper bracket board.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model provides a bridge hyperboloid friction pendulum support with beam falling prevention function's lower support plate side sets up spacing subassembly and carries on spacingly to the lower support plate, and the upper end of spacing subassembly is fixed with the upper bracket board through the shear pin, when the earthquake takes place, when the horizontal load that the bridge bore reaches the shearing force, the shear pin is cut off, the limiting plate subassembly became invalid, the support consumes energy through the relative slip of arc surface between spherical crown and upper bracket board and the lower support plate, isolate the roof beam body from the pier, make most seismic energy unable to transmit the roof beam body from the pier, and convert the kinetic energy that the earthquake produced into potential energy, reach the shock attenuation effect;
(2) the utility model adopts the aluminum alloy spherical crown, compared with the existing steel spherical crown with the spherical surface plated with chromium or coated with stainless steel, the surface of the aluminum alloy spherical crown can be directly processed and molded, thereby greatly improving the dimensional accuracy of the surface of the aluminum alloy spherical crown, avoiding the influence of the secondary welding of the stainless steel plate on the overall dimension of the spherical crown, solving the difficult problem of difficult control of the uniformity of the spherical surface plated with chromium, and improving the manufacturing quality of products; meanwhile, the aluminum alloy spherical crown in the utility model is directly processed and molded for use, and the surface of the spherical crown does not need to be coated with stainless steel or be plated with chrome to meet the use requirement, thereby reducing the manufacturing procedures, shortening the manufacturing period and greatly reducing the manufacturing cost;
(3) the lower convex spherical surface of the aluminum alloy spherical crown of the utility model is not coated with the stainless steel plate or chromium plating, and has no welding part, thereby reducing the risk of falling off of the coating layer due to reasons such as stress fatigue and corrosion, and improving the service life and safety of the hyperboloid friction pendulum support; meanwhile, the surface of the aluminum alloy spherical crown does not need to be plated with chrome or coated with stainless steel, so that the environmental pollution is reduced, and the environment is protected; the aluminum alloy spherical crown is light in weight, convenient for logistics transportation and better capable of meeting the use requirements;
(4) the utility model discloses an edge of the last concave sphere of support plate and edge of the concave sphere of bottom suspension bedplate all are equipped with prevents falling the roof beam notch, and when the aluminium alloy spherical crown cunning moved to preventing falling roof beam notch position department, prevent falling the roof beam notch and can block the aluminium alloy spherical crown and continue to slide to prevent upper end roof beam body roll-off, play the effect of preventing falling the roof beam.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a perspective view of a hyperboloid friction pendulum support of a bridge with a beam falling prevention function according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view at I of FIG. 1;
in the figure: 1. upper bracket board, 2, go up the antifriction plate, 3, spherical crown, 4, lower antifriction plate, 5, lower support board, 6, spacing board subassembly, 7, connecting plate subassembly, 8, go up the stock, 9, shear pin, 10, dustproof bounding wall subassembly, 11, lower stock, 12, prevent the roof beam notch that falls.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, an embodiment of the present invention provides a bridge hyperboloid friction pendulum support with a beam falling prevention function, which includes an upper wear-resistant plate 2, a lower wear-resistant plate 4, an upper support plate 1 with an upper concave spherical surface on a bottom surface, a lower support plate 5 with a lower concave spherical surface on a top surface, and a spherical crown 3 disposed between the upper support plate 1 and the lower support plate 5; the top surface of the spherical crown 3 is an upper convex spherical surface matched with the upper concave spherical surface, the bottom surface is a lower convex spherical surface matched with the lower concave spherical surface, namely the curvature radius of the upper convex spherical surface of the spherical crown 3 is matched with that of the upper concave spherical surface of the upper support plate 1, and the curvature radius of the lower convex spherical surface of the spherical crown 3 is matched with that of the lower concave spherical surface of the lower support plate 5; the edge of the upper concave spherical surface of the upper support plate 1 and the edge of the lower concave spherical surface of the lower support plate 5 are provided with anti-falling beam notches 12; the side of bottom suspension bedplate 5 is equipped with limiting plate subassembly 6, and limiting plate subassembly 6 is cyclic annular, and the upper end of bottom suspension bedplate 5 is at least partly stretched into limiting plate subassembly 6's inboard, the lower extreme of limiting plate subassembly 6 is located below the upper surface height of bottom suspension bedplate 5 promptly, and shear pin 9 is passed through to limiting plate subassembly 6's upper end and upper bracket board 1 is fixed. The bridge hyperboloid friction pendulum support can be used for bridges and other building anti-seismic supports, and plays a role of a common support under normal conditions, a limit plate assembly 6 is arranged on the side edge of a lower support plate 5 to limit the lower support plate 5, and the upper end of the limit plate assembly 6 is fixed with an upper support plate 1 through a shear pin 9; when the earthquake takes place, when the horizontal load that the bridge bore reached the shearing force, the shear force round pin 9 was cut off, and limiting plate subassembly 6 became invalid, and the support passes through the relative slip power consumption of arc surface between spherical crown 3 and upper bracket board 1 and the lower support board 5, keeps apart the roof beam body and pier, makes most seismic energy can't transmit the roof beam body from the pier to the kinetic energy that will earthquake produced converts the potential energy into, reaches the shock attenuation effect.
Further, an upper wear-resisting plate 2 is arranged between the upper concave spherical surface of the upper support plate 1 and the upper convex spherical surface of the spherical crown 3, and a lower wear-resisting plate 4 is arranged between the lower concave spherical surface of the lower support plate 5 and the lower convex spherical surface of the spherical crown 3. In addition, as shown in fig. 2, the anti-falling beam notch 12 at the edge of the upper concave spherical surface of the upper support plate 1 and the edge of the lower concave spherical surface of the lower support plate 5 can also play a role of anti-falling beam, when the spherical crown 3 slides to the position of the anti-falling beam notch 12, the upper support plate 1 and the lower support plate 5 can be prevented from continuously sliding, so that the steel box beam is prevented from sliding out to play a role of anti-falling beam; the phenomenon that the displacement of the spherical crown of the support is limited by additionally adding a bridge falling-prevention device is avoided, and the cost is reduced; the shear pin 9 of this embodiment has a V-shaped cut in its shear plane, and when the horizontal load reaches the shear force, the shear pin 9 shears, the limiting plate assembly 6 fails, and the support freely slides and consumes energy. The size of the upper concave spherical surface is larger than that of the upper convex spherical surface, and the size of the lower concave spherical surface is larger than that of the lower convex spherical surface.
Specifically, the limiting plate assembly 6 of the present embodiment includes a plurality of limiting plates, a lower end of each limiting plate is located below an upper surface of the lower support plate 5, and an upper end of each limiting plate is fixed to the upper support plate 1 through a shear pin 9; a plurality of limiting plates are arranged along the circumferential direction of the upper end of the lower support plate 5 at intervals. The plurality of limiting plates of this embodiment can be 4, distribute around lower saddle board 5.
In this embodiment, the spherical crown 3 adopts a hyperboloid structure to realize displacement and rotation of the beam body, specifically, the spherical crown 3 is an aluminum alloy spherical crown and is made of a forged aluminum alloy with the grade of 6a02, and the forged aluminum alloy with the grade of 6a02 is a forged aluminum with wide industrial application, has medium strength, high plasticity in an annealing state, good plasticity after quenching and natural aging, high plasticity in a thermal state, easy forging and stamping, and is suitable for machining. The aluminum alloy spherical crown made of the wrought aluminum alloy with the trademark of 6A02 is light in weight, the weight of the aluminum alloy spherical crown is about 40% of that of the existing steel spherical crown, and logistics transportation is facilitated; the paint has the characteristics of no corrosion, no maintenance, long service life and the like, and the service life can exceed 50 years; the compression strength is high, the contact pressure reaches more than 60N/mm, and the bearing capacity of the friction pendulum support is ensured; meanwhile, the surface roughness of the aluminum alloy spherical crown is low, the surface roughness after finish machining can be smaller than Ra0.02, even smaller than the surface roughness of the mirror surface stainless steel plate, the friction coefficient between the lower spherical surface of the aluminum alloy spherical crown and the lower wear-resisting plate 4 is stable, and the aluminum alloy spherical crown is suitable for forming a friction pair with the lower wear-resisting plate 4. In addition, the forged aluminum alloy with the grade of 6A02 has high corrosion resistance, is similar to stainless steel, cannot be rusted, and the aluminum alloy spherical crown made of the forged aluminum alloy with the grade of 6A02 can be suitable for severe corrosion areas such as coastal areas, special environments and the like after special treatment, and has wide application range.
Further, the edge of the upper support plate 1 is connected with the edge of the lower support plate 5 through a connecting plate assembly 7; specifically, the connecting plate assembly 7 comprises a plurality of connecting plates, and two ends of each connecting plate are respectively connected with the edge of the upper support plate 1 and the edge of the lower support plate 5; a plurality of limiting plates are arranged along the circumferential interval of the upper support plate 1, so that the stability of the support structure is ensured.
In this embodiment, the upper end of the upper support plate 1 is provided with a plurality of upper anchor rods 8 for connecting with a bridge body, and the lower end of the lower support plate 5 is provided with a plurality of lower anchor rods 11 for connecting with a bridge pier. Specifically, the number of the upper anchor rods 8 and the lower anchor rods 11 can be 4, the upper anchor rods 8 are uniformly distributed on the upper end surface of the upper support plate 1 and connected with the upper support plate 1 through the upper anchor bolts, and the lower anchor rods 11 are uniformly distributed on the lower end surface of the lower support plate 5 and connected with the lower support plate 5 through the lower anchor bolts.
Optimally, the side edge of the upper support plate 1 is provided with a dustproof coaming assembly 10 around the periphery of the upper support plate 1, so as to prevent dust around the support.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, above-mentioned structure should all be regarded as belonging to the utility model discloses a protection scope.
Claims (9)
1. The utility model provides a bridge hyperboloid friction pendulum support with prevent roof beam function that falls, includes that last antifriction plate, lower antifriction plate, bottom surface are upper bracket board and the bottom suspension bedplate that the top surface is concave spherical surface down of last antifriction plate, lower antifriction plate, its characterized in that: the spherical crown is arranged between the upper support plate and the lower support plate; the top surface of the spherical crown is an upper convex spherical surface matched with the upper concave spherical surface, and the bottom surface of the spherical crown is a lower convex spherical surface matched with the lower concave spherical surface; the edge of the upper concave spherical surface and the edge of the lower concave spherical surface are both provided with anti-falling beam notches; the side of bottom suspension bedplate is equipped with spacing board subassembly, the upper end of bottom suspension bedplate is at least partly stretched into the inboard of spacing board subassembly, the upper end of spacing board subassembly through the shear pin with it is fixed to go up the bedplate.
2. The bridge hyperboloid friction pendulum support with prevent falling roof beam function of claim 1 characterized in that: an upper wear-resisting plate is arranged between the upper concave spherical surface and the upper convex spherical surface, and a lower wear-resisting plate is arranged between the lower concave spherical surface and the lower convex spherical surface.
3. The bridge hyperboloid friction pendulum support with prevent falling roof beam function of claim 1 characterized in that: the limiting plate assembly comprises a plurality of limiting plates, the lower end of each limiting plate is located below the upper surface of the lower support plate, and the upper end of each limiting plate is fixed with the upper support plate through a shear pin; and the plurality of limiting plates are arranged along the circumferential direction of the upper end of the lower support plate at intervals.
4. The bridge hyperboloid friction pendulum support with prevent falling roof beam function of claim 1 characterized in that: the size of the upper concave spherical surface is larger than that of the upper convex spherical surface, and the size of the lower concave spherical surface is larger than that of the lower convex spherical surface.
5. The bridge hyperboloid friction pendulum support with prevent falling roof beam function of claim 1 characterized in that: the spherical crown is an aluminum alloy spherical crown and is made of forged aluminum alloy with the brand number of 6A 02.
6. The bridge hyperboloid friction pendulum support with prevent falling roof beam function of claim 1 characterized in that: the edge of the upper support plate is connected with the edge of the lower support plate through a connecting plate component.
7. The bridge hyperboloid friction pendulum support with prevent falling roof beam function of claim 6 characterized in that: the connecting plate assembly comprises a plurality of connecting plates, and two ends of each connecting plate are respectively connected with the edge of the upper support plate and the edge of the lower support plate; and the plurality of limiting plates are arranged along the circumferential direction of the upper support plate at intervals.
8. The bridge hyperboloid friction pendulum support with prevent falling roof beam function of claim 1 characterized in that: the upper bracket board upper end is equipped with a plurality of anchor rods that go up that are used for being connected with the bridge roof beam body, the lower extreme of bottom suspension bedplate is equipped with a plurality of anchor rods down that are used for being connected with the pier.
9. The bridge hyperboloid friction pendulum support with prevent falling roof beam function of claim 1 characterized in that: and a dustproof coaming component is installed on the side edge of the upper support plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921584885.9U CN211368356U (en) | 2019-09-23 | 2019-09-23 | Bridge hyperboloid friction pendulum support with prevent roof beam function that falls |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921584885.9U CN211368356U (en) | 2019-09-23 | 2019-09-23 | Bridge hyperboloid friction pendulum support with prevent roof beam function that falls |
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| CN211368356U true CN211368356U (en) | 2020-08-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279327A (en) * | 2021-06-05 | 2021-08-20 | 衡水中交信德工程橡塑有限公司 | Bridge or house building support friction part convenient for realizing rotation or sliding and preparation method thereof |
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2019
- 2019-09-23 CN CN201921584885.9U patent/CN211368356U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279327A (en) * | 2021-06-05 | 2021-08-20 | 衡水中交信德工程橡塑有限公司 | Bridge or house building support friction part convenient for realizing rotation or sliding and preparation method thereof |
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