CN205188805U - Spherical bearing for bridge - Google Patents
Spherical bearing for bridge Download PDFInfo
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- CN205188805U CN205188805U CN201520908611.6U CN201520908611U CN205188805U CN 205188805 U CN205188805 U CN 205188805U CN 201520908611 U CN201520908611 U CN 201520908611U CN 205188805 U CN205188805 U CN 205188805U
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- base plate
- upper base
- bedplate
- spherical
- wing
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Abstract
The utility model provides a spherical bearing for bridge, including last bedplate, spherical crown lining board, lower bedplate, corrosion resistant plate, plane antifriction plate, spherical antifriction plate, the equal fixed mounting in both ends who goes up bedplate and lower bedplate has the anchor stick, be equipped with the bedplate edge of a wing on the tip bottom surface of last bedplate, the cross -section of going up the bedplate edge of a wing is for trapezoidal, and the wide lower extreme in upper end is narrow, the outside line of trapezoid cross section can be straight line or pitch arc, it goes up the bedplate edge of a wing and falls trapezoidal orthogonal hierarchic structure to be equipped with down the cooperation on the bedplate. There is following advantage: through setting up the trapezoidal bedplate edge of a wing and the excellent effect that adopts the enlarged variable cross section of lower extreme to reach support superelevation horizontal bearing capacity of anchor of going up, guarantee that the support is still at normal operating conditions under big shake effect, realize the high durability ability of support through using super high antifriction plate and support newly to fill a prescription the protective system, the mode that the recess by down bedplate setting and the bulge on the last bedplate edge of a wing combined together realizes the function that the vertical tensile of support pulled out.
Description
Technical field
The utility model belongs to bridge construction bearing technical field, especially relates to a kind of spherical bearing for bridge.
Background technology
Bridge pad is the important feature parts connecting bridge superstructure and substructure, and the counter-force of bridge superstructure and distortion (displacement, corner) are reliably passed to bridge substructure by it, ensures the power transmission of bridge construction, clearly stressed.Spherical bearing is as a kind of form of structure of bridge pad, be subject to the favor of engineering circles at the very start, it has lot of advantages, rotates flexibly, amount of spin is large, respectively consistent to rotating property, vertical bearing capacity is strong, allows that support displacement is large, and because bearing is without rubber pressure-bearing, there is not the impact of ageing of rubber, durability is higher, is one of support style of current railroad bridge and Longspan Bridge first-selection.
World wide earthquake disaster for many years shows, along with the development of urbanization, transportation network is more and more important in the lifeline engineering of whole urban earthquake disaster prevention.Domestic bridge earthquake resistant design code of being correlated with all proposes many levels, multistage requirement of setting up defences, and as " urban track traffic seismic design of structures specification " regulation, the anti-seismic performance that structure should follow three levels is set up defences target.Performance requirement I: do not destroy or slight damage after claimed structure earthquake, should be able to keep its normal usage function; Structure is in the elastic working stage; Traffic safety should do not affected because the distortion of structure causes the excessive deformation of track; Performance requirement II: may destroy after structural earthquake, through repairing, should be able to recover its normal usage function in a short time; Structure partial enters elastoplasticity working stage; Performance requirement III: comparatively havoc may be produced after structural earthquake, but should not occur that local or entirety are ruined, structure is in elastoplasticity working stage.And specify, when bridge construction adopts good ductility to design, for performance requirement II and performance requirement III, all require that bearing can keep normal function, without the need to changing.
Therefore, when bridge carries out good Ductility Design, the requirement of bearing performance is improved greatly, especially when bridge is in larger regional of the higher or earthquake acceleration peak value of fortification intensity, the horizontal force that bearing bears will be quite large, exceedes the bearing horizontal force size of current specification defined.In addition, if bearing is once destroyed, bearing is changed and constructs cumbersome, and the operation of circuit is had an impact, and increasing bridge inspection and maintenance expense.So be necessary the bearing designing a kind of superelevation horizontal force and high-durability, ensure large shake rear support normal function and without the need to changing.
Utility model content
In view of this, the utility model is intended to propose a kind of spherical bearing for bridge, to improve anti-seismic performance.
For achieving the above object, the technical solution of the utility model is achieved in that
Spherical bearing for bridge, comprise upper base plate, spherical crown liner plate, lower seat board, be arranged on the flat frictional pair be made up of corrosion resistant plate and planar lasting board between upper base plate and spherical crown liner plate, be arranged on spherical wearing plate between spherical crown liner plate and lower seat board, the two ends of described upper base plate and lower seat board are all installed with anchor rod; The bottom surface, end of described upper base plate is provided with the upper base plate edge of a wing, and the cross section on the described upper base plate edge of a wing is inverted trapezoidal, wide lower end, upper end; The side on the described upper base plate edge of a wing is provided with protuberance; The centre position, side of described lower seat board arranges the groove coordinated with protuberance.
Further, the outer edge in described inverted trapezoidal cross section can be straight line or camber line.
Further, described anchor rod is provided with enlarging section near one end of upper base plate and lower seat board.
Further, the coating structure of described anchor rod, upper base plate, lower seat board and spherical crown liner plate comprises from inside to outside: Aluminum Coating, epoxy paint confining bed, epoxy micaceous iron intermediate primer layers and fluorine carbon finishing paint layer, coating structure gross thickness ≮ 300 μm.
Further, the surface of described anchor rod is provided with protruding diagonal rib.
Further, the outer edge of anchor rod at described upper base plate two ends and the outside of upper base plate are on a vertical straight line.
Further, described upper base plate and the upper base plate edge of a wing are formed in one structure or weld together.
Further, described planar lasting board and spherical wearing plate are super-high wear-resistant plate UHMWPE.
Relative to prior art, the utility model has following advantage:
(1) variable cross-section by arranging the inverted trapezoidal upper base plate edge of a wing and anchor rod employing lower end amplification reaches the effect of bearing superelevation horizontal bearing capacity, thus guarantee that bearing is still in normal operating conditions under large shake effect, exempt the various disadvantageous problem that replacing time brings bridge;
(2) by using super-high wear-resistant plate UHMWPE and bearing protective system of newly filling a prescription to realize the high-durability ability of bearing;
(3) mode that the groove arranged by lower seat board and the protuberance on the upper base plate edge of a wing are combined, realizes the function of the vertical anti-pulling of bearing;
(4) bearing and the bridge same life-span, free of replacement under normal condition, maintenance cost saving, reduces impact on circuit operation, and eliminate that replacing time brings various to the disadvantageous problem of bridge; And structure is simple, materials are economized, lightweight, simple installation.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of spherical bearing for bridge described in the utility model embodiment.
Description of reference numerals:
1-anchor rod, 2-upper base plate, 3-corrosion resistant plate, 4-planar lasting board, 5-spherical crown liner plate, the spherical wearing plate of 6-, seat board under 7-, the 8-upper base plate edge of a wing.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
Spherical bearing for bridge, as described in Figure 1, comprise upper base plate 2, spherical crown liner plate 5, lower seat board 7, be arranged on the flat frictional pair be made up of corrosion resistant plate 3 and planar lasting board 4 between upper base plate 2 and spherical crown liner plate 5, be arranged on spherical wearing plate 6 between spherical crown liner plate 5 and lower seat board 7, the two ends of described upper base plate 2 and lower seat board 7 are all installed with anchor rod 1;
The bottom surface, end of described upper base plate 2 is provided with the upper base plate edge of a wing 8, and the cross section on the described upper base plate edge of a wing 8 is inverted trapezoidal, and wide lower end, upper end is narrow, and the outer edge in described inverted trapezoidal cross section can be straight line or camber line; Described upper base plate 2 and the upper base plate edge of a wing 8 are formed in one structure or weld together.
The centre position, side of described lower seat board 7 is provided with groove, and groove matches with the side protuberance on the upper base plate edge of a wing 8, realizes anti-pulling function.
The surface of described anchor rod 1 is provided with protruding diagonal rib, plays and increases anchor rod and concrete cementation;
Described anchor rod 1 is provided with enlarging section near one end of upper base plate 2 and lower seat board 7, and the breadth of section of described enlarging section is greater than the width of anchor rod 1 body, and enlarging section and body smooth connection, enlarging section increases the shear resistance of anchor rod.
Described planar lasting board 4 and spherical wearing plate 6 are super-high wear-resistant plate (UHMWPE), have very high durability.
The process in early stage of described anchor rod 1, upper base plate 2, lower seat board 7 and spherical crown liner plate 5 and application processing procedure as follows: its surface is full machine, first removes quench-hardened case and oxide skin after oxyacetylene metal-cutting, chamfering R2; Again surperficial degreasing clean after carry out sandblasting or Shot Blasting reaches Sa3 level, roughness Rz50-100 μm; Afterwards, spraying zinc aluminized coating 150 μm in 2 hours after inject process, is then undertaken closed 50 μm by epoxy paint immediately; Finally by technological requirement spraying epoxy micaceous iron intermediate coat 100 μm and fluorine carbon finishing paint 50 μm; Dry film gross thickness ≮ 300 μm; Adopt the new formula protective system of Aluminum Coating and multilayer different paints, endurance quality is higher.
Wherein in " after removal oxyacetylene metal-cutting quench-hardened case ", oxyacetylene metal-cutting refers to component bulk metal oxygen being cut into required size, is a kind of cutting mode; Quench-hardened case refers to because oxygen cutting makes neighbouring metal heat up, and causes that metal is hardening to become fragile, and affects metallicity, needs to remove.So, " first to remove oxyacetylene metal-cutting quench-hardened case ".
The outer edge of anchor rod 1 and the outside of upper base plate 2 at described upper base plate 2 two ends are on a vertical straight line.
The vertical direction across bridge opposing horizontal force of the utility model spherical bearing is not quite similar, and vertical direction across bridge is not quite similar in the upper base plate edge of a wing 8 size and anchor rod 1 thickness.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. spherical bearing for bridge, comprise upper base plate (2), spherical crown liner plate (5), lower seat board (7), be arranged on the flat frictional pair be made up of corrosion resistant plate (3) and planar lasting board (4) between upper base plate (2) and spherical crown liner plate (5), be arranged on spherical wearing plate (6) between spherical crown liner plate (5) and lower seat board (7), the two ends of described upper base plate (2) and lower seat board (7) are all installed with anchor rod (1); It is characterized in that:
The bottom surface, end of described upper base plate (2) is provided with the upper base plate edge of a wing (8), and the cross section of the described upper base plate edge of a wing (8) is inverted trapezoidal, and wide lower end, upper end is narrow; The side of the described upper base plate edge of a wing (8) is provided with protuberance, and the centre position, side of described lower seat board (7) arranges the groove coordinated with protuberance.
2. spherical bearing for bridge according to claim 1, is characterized in that: the outer edge in described inverted trapezoidal cross section can be straight line or camber line.
3. spherical bearing for bridge according to claim 1, is characterized in that: described anchor rod (1) is provided with enlarging section near one end of upper base plate (2) and lower seat board (7).
4. spherical bearing for bridge according to claim 1, it is characterized in that: the coating structure of described anchor rod (1), upper base plate (2), lower seat board (7) and spherical crown liner plate (5) comprises from inside to outside: Aluminum Coating, epoxy paint confining bed, epoxy micaceous iron intermediate primer layers and fluorine carbon finishing paint layer, coating structure gross thickness ≮ 300 μm.
5. spherical bearing for bridge according to claim 1, is characterized in that: the surface of described anchor rod (1) is provided with protruding diagonal rib.
6. spherical bearing for bridge according to claim 1, is characterized in that: the outer edge of the anchor rod (1) at described upper base plate (2) two ends and the outside of upper base plate (2) are on a vertical straight line.
7. spherical bearing for bridge according to claim 1, is characterized in that: described upper base plate (2) and the upper base plate edge of a wing (8) are formed in one structure or weld together.
8. spherical bearing for bridge according to claim 1, is characterized in that: described planar lasting board (4) and spherical wearing plate (6) are super-high wear-resistant plate UHMWPE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520908611.6U CN205188805U (en) | 2015-11-13 | 2015-11-13 | Spherical bearing for bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520908611.6U CN205188805U (en) | 2015-11-13 | 2015-11-13 | Spherical bearing for bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205188805U true CN205188805U (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520908611.6U Active CN205188805U (en) | 2015-11-13 | 2015-11-13 | Spherical bearing for bridge |
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| CN (1) | CN205188805U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256717A (en) * | 2015-11-13 | 2016-01-20 | 天津市市政工程设计研究院 | Ultrahigh horizontal force high-durability spherical support for track traffic |
| CN106996078A (en) * | 2017-05-15 | 2017-08-01 | 中国铁路设计集团有限公司 | Bridge anti-pulling anti-fall girder apparatus |
-
2015
- 2015-11-13 CN CN201520908611.6U patent/CN205188805U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256717A (en) * | 2015-11-13 | 2016-01-20 | 天津市市政工程设计研究院 | Ultrahigh horizontal force high-durability spherical support for track traffic |
| CN105256717B (en) * | 2015-11-13 | 2016-11-30 | 天津市市政工程设计研究院 | Track traffic superelevation horizontal force high-durability spherical bearing |
| CN106996078A (en) * | 2017-05-15 | 2017-08-01 | 中国铁路设计集团有限公司 | Bridge anti-pulling anti-fall girder apparatus |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300051 No. 239, Yingkou Road, Heping District, Tianjin Patentee after: Tianjin municipal engineering design and Research Institute Co.,Ltd. Address before: 300051 No. 239, Yingkou Road, Heping District, Tianjin Patentee before: TIANJIN MUNICIPAL ENGINEERING DESIGN & Research Institute |