CN205775887U - A kind of large eccentricity rotary body device of Curved Stayed-cable Bridge - Google Patents
A kind of large eccentricity rotary body device of Curved Stayed-cable Bridge Download PDFInfo
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- CN205775887U CN205775887U CN201620451883.2U CN201620451883U CN205775887U CN 205775887 U CN205775887 U CN 205775887U CN 201620451883 U CN201620451883 U CN 201620451883U CN 205775887 U CN205775887 U CN 205775887U
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Abstract
This utility model relates to bridge rotating device technique field, in particular to the large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge.Including cushion cap, cushion cap upper surface is fixed with the ball pivot device that pivot center overlaps with the center of gravity of curved section bridge；Ball pivot includes that lower ball pivot and upper ball pivot, lower ball pivot are the hemispherical dome structure of concave downward, and upper ball pivot is the downwardly convex hemispherical dome structure coordinated with lower ball pivot, and upper ball pivot forms rotating ball pivot device therewith in being fastened on lower ball pivot；The upper end of upper ball pivot is fixed with the top rotary table that center overlaps with the centrage of curved section bridge；Leave eccentric spacing between center and the pivot center of ball pivot of top rotary table, top rotary table is provided with the bascule maintaining top rotary table upper surface holding level.This utility model simple structure, construction safety is convenient, not only meets structure stress requirement, and economy is good, can be widely used in decentral swivel construction bridges, will play huge economic benefit in railway and highway bridge construction.
Description
Technical field
This utility model relates to bridge rotating device technique field, in particular to the large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge.
Background technology
At present, China's highway, high-speed railway transportation industry quickly grow, and bridge rotating is increasingly widely adopted in bridge building operations.The construction equipment that Bridge Rotation Construction Technique method requires is few, simple to operate.Rotator construction have do not disturb traffic, uninterrupted navigation, can across zanjon, river, traffic road frequently, and construction quickly, the advantage such as economic, convenient, reliable, use the construction of this method more and more in recent years.
For straightway bridge, generally central point and the center of gravity of straightway bridge is to overlap, when such bridge structure uses rotation swivel construction method, it is only necessary to arrange one in the position of bridge center of gravity and rotate ball pivot, utilize the rotation of ball pivot to reach the rotator construction purpose of straightway bridge.As it is shown in figure 1, the center of the bridge pier of straightway bridge and center of gravity overlap, overlapping with the center of ball pivot cushion cap, now the most there is not deflection issues in ball pivot, bridge yet, it is only necessary to straightway bridge just can be effectively rotated in place by the power providing bridge to rotate.
But straightway bridge cannot be used for some Special zone, curved section bridge can only be used.And for curved section bridge, the center of curved section bridge and center of gravity heavy and, the center of gravity of curve bridge and Complex Different Shape bridge structure is not the most on bridge longitudinal axis, bridge band bias is the biggest, traditional method is typically solved by counterweight or increase dimension of platform, and construction trouble and economic cost are high.
Summary of the invention
The purpose of this utility model seeks to solve above-mentioned background technology and mentions the problem that prior art bothers for the deflection construction of curved section bridge and economy cost is high, it is provided that the large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge.
The technical solution of the utility model is: the large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge, including cushion cap, it is characterised in that: it is fixed with the ball pivot device that pivot center overlaps with the center of gravity of curved section bridge on described cushion cap；Described ball pivot device includes that lower ball pivot and upper ball pivot, lower ball pivot are the hemispherical dome structure of concave downward, and upper ball pivot is the downwardly convex hemispherical dome structure coordinated with lower ball pivot, and upper ball pivot forms rotating ball pivot device therewith in being fastened on lower ball pivot；The upper end of described upper ball pivot is provided with the sheave that center overlaps with the pivot center of ball pivot device；Described sheave upper end is provided with the top rotary table that center overlaps with the centrage of curved section bridge；Leave spacing between center and the pivot center of ball pivot of described top rotary table, top rotary table is provided with the bascule maintaining top rotary table upper surface holding level.
The most described bascule includes the many upper prestressed strands being fixed on top rotary table surrounding.
The most described cushion cap includes being anchored at ground support column and fixing lower rotary table on the support columns, and lower ball pivot is fixed on the upper surface of lower rotary table.
The surrounding of the most described lower rotary table is provided with the many lower prestress steel bundles maintaining lower rotary table upper surface holding level.
The most described sheave lower end is provided with many spikes；Described supporting leaves gap between underfooting end and the upper surface of top rotary table.
It is provided with, on the most described upper ball pivot, the rotating shaft that axis overlaps with ball pivot device centrage；The shaft sleeve that axis overlaps it is provided with ball pivot device centrage on described lower ball pivot；Described rotating shaft upper end is fixed on ball pivot, and lower end extend in shaft sleeve through upper ball pivot；Described shaft sleeve lower end is fixed on lower rotary table, and upper end is sheathed in rotating shaft through lower ball pivot.
It is provided with many diagonal braces on the most described shaft sleeve；Described diagonal brace lower end is fixed on shaft sleeve, and upper end is fixed on the lower surface of lower ball pivot.
The most described lower ball pivot is provided with two blocks of tetrafluoro plates contacted with each other on the connecting end surface of upper ball pivot.
Advantage of the present utility model has: 1, this utility model leaves spacing between the pivot center and bridge centrage of ball pivot device, bridge eccentric bending moment during turning is overcome by this spacing, make rotation construction structure stress more reasonable, improve the safety of rotator construction；
2, this utility model keeps top rotary table and lower rotary table to keep level to eliminate the uneven and asymmetric problem of structure stress owing to the pivot center of ball pivot device is not heavy with the centrage of upper and lower rotating disk and brings by upper prestressed strand and lower prestress steel bundle, the upper and lower rotating disk stress making construction by swing is symmetrical, eliminates construction bridges and may produce the potential safety hazard of sliding on rotating disk；
3, this utility model is without using large-scale suspended deck structure, and economy is more preferable, has saved substantial amounts of manpower and materials, is conducive to promoting the use of on a large scale.
Simple structure of the present invention, construction safety is convenient, not only meets structure stress requirement, and economy is good, can be widely used in decentral swivel construction bridges, will play huge economic benefit in railway and highway bridge construction.
Accompanying drawing explanation
The spherical hinge structure schematic diagram of Fig. 1: prior art；
Fig. 2: spherical hinge structure schematic diagram of the present utility model；
Fig. 3: the centrage of this utility model ball pivot device and the position relationship schematic diagram of the centrage of bridge pier；
Fig. 4: rotating shaft of the present utility model and the structural representation of shaft sleeve；
Fig. 5: bridge of the present utility model is placed on the front view on top rotary table；
Fig. 6: bridge of the present utility model is placed on the top view on top rotary table；
Wherein: ball pivot on 1；2 times ball pivots；3 top rotary tables；4 lower rotary tables；Prestressed strand on 5；6 lower prestress steel bundles；7 support columns；8 fix post；9 concrete；10 tetrafluoro plates；11 rotating shafts；12 shaft sleeves；13 diagonal braces；14 sheaves.
Detailed description of the invention
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Such as Fig. 1～6, the large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge, including cushion cap, the cushion cap of the present embodiment includes being anchored at ground support column 7, and many support columns 7 provide support force upwards for whole swivel structure.The upper end of support column 7 is provided with lower rotary table 4, the upper surface of lower rotary table 4 keeps level, the surrounding of lower rotary table 4 is provided with many lower prestress steel bundles 6, use jack to pull and prestressed strand is applied active force, maintained by these lower prestress steel bundles 6 upper surface of lower rotary table 4 to keep level.
The upper surface of lower rotary table 4 is provided with ball pivot knot device, ball pivot device includes lower ball pivot 2 and upper ball pivot 1, lower ball pivot 2 is the hemispherical dome structure of concave downward, upper ball pivot 1 is the downwardly convex hemispherical dome structure coordinated with lower ball pivot, and upper ball pivot 1 forms rotating ball pivot device therewith in being fastened on lower ball pivot 2.The upper end of upper ball pivot 1 is provided with the sheave 14 that center overlaps with the pivot center of ball pivot device, during actual motion, just bridge of turning can be carried out special topic construction by rotating sheave 14, sheave 14 upper end is fixed with the top rotary table 3 that center overlaps with the centrage of curved section bridge, separation delta (as shown in figures 2-3) is left between center and the pivot center of ball pivot of top rotary table 3, separation delta can eliminate curved section bridge because of centered by and the deflection moment of flexure that formed heavy with center of gravity, improve the safety of construction by swing.
As shown in Figure 4, the rotating shaft 11 that axis overlaps it is provided with ball pivot device centrage on top rotary table 3, the shaft sleeve 12 that axis overlaps it is provided with ball pivot device pivot center on lower rotary table 4, rotating shaft 11 upper end is fixed on top rotary table 3, lower end extend in shaft sleeve 12 through upper ball pivot 1, shaft sleeve 12 lower end is fixed on lower rotary table 4, and upper end is sheathed in rotating shaft 11 through lower ball pivot 2.Coordinating of rotating shaft 11 and shaft sleeve 12 can make rotating of ball pivot device keep the axis of vertical direction to rotate, it is to avoid it is possible that the phenomenon tilted to other directions in rotation process.
Being provided with many diagonal braces 13 on shaft sleeve 12, diagonal brace 13 lower end is fixed on shaft sleeve 12, and upper end is fixed on the lower surface of lower ball pivot 2.Diagonal brace 13 strengthens the stable connection between shaft sleeve 12 and rotating shaft 11.
Owing to the centrage of top rotary table 3 and the center of gravity of curved section bridge are not weigh sum, therefore, the upper surface two side position stress of top rotary table 3 is unbalanced.The present embodiment is provided with prestressed strand 5 on many in the surrounding of top rotary table 3 and pulls top rotary table 3, to eliminate the swivel bridges sill bolt imbalance to top rotary table 3.Many lower prestress steel bundles 6 it are also equipped with on same lower rotary table 4.
Being provided with many spikes 8 on the lower surface of sheave 14, the upper end of a spike 8 is fixed on the lower surface of sheave 14, leaves gap between the upper surface of lower end and lower rotary table 4.Time during turning because deflection occurs in discontinuity equalization, spike 8 can be supported on lower rotary table 4, it is to avoid toppling of top rotary table 3.When sheave 14 keeps level, the distance of the upper surface of a spike 8 lower end distance lower rotary table 4 is about 3cm.
Lower ball pivot 2 is provided with two blocks of tetrafluoro plates 10 contacted with each other on the connecting end surface of upper ball pivot 1.Tetrafluoro plate 10 can reduce the frictional force between ball pivot, makes rotation convenient, constructs convenient.
During use, as shown in Fig. 5～6, being placed on top rotary table 3 by the bridge pier of curved section bridge, the centrage of curved section bridge overlaps with the centrage of top rotary table 3, and the center of gravity of curved section bridge overlaps with the pivot center of ball pivot device and the center superposition of sheave 14.Curved section bridge owing to center and center of gravity are heavy and, in rotation process, it is different that the compressing of top rotary table 3 and lower rotary table 4 is also become by curved section bridge, and the pivot center of ball pivot device is with upper, the centrage of lower rotary table heavy and, also result in the asymmetric problem of lower rotary table stress, use prestressed strand 5 and lower prestress steel bundle 6 that top rotary table 3 and lower rotary table 4 are applied active force, the imbalance of generation and asymmetric is eliminated with this, ensure the balance quality of whole device, sheave 14 is applied steering force, slowly rotate bridge, until completing bridge steering procedure.
After having turned, casting concrete 9 on lower rotary table 4, top rotary table 3, ball pivot device, sheave 14 are cast in lower rotary table 4 together with form fixed structure, prevent the rotation again of ball pivot device.
Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description, principle of the present utility model is simply described; on the premise of without departing from this utility model spirit and scope, this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (8)
1. a large eccentricity rotary body device for Curved Stayed-cable Bridge, including cushion cap, it is characterised in that: it is fixed with the ball pivot device that pivot center overlaps with the center of gravity of curved section bridge on described cushion cap；Described ball pivot device includes lower ball pivot (2) and upper ball pivot (1), lower ball pivot (2) is the hemispherical dome structure of concave downward, upper ball pivot (1) is the downwardly convex hemispherical dome structure coordinated with lower ball pivot, and upper ball pivot (1) forms rotating ball pivot device therewith in being fastened on lower ball pivot (2)；The upper end of described upper ball pivot (1) is provided with the sheave (14) that center overlaps with the pivot center of ball pivot device；Described sheave (14) upper end is provided with the top rotary table (3) that center overlaps with the centrage of curved section bridge；Leave spacing between center and the pivot center of ball pivot of described top rotary table (3), top rotary table (3) is provided with the bascule maintaining top rotary table (3) upper surface to keep level.
The large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge the most as claimed in claim 1, it is characterised in that: described bascule includes the many upper prestressed strands (5) being fixed on top rotary table (3) surrounding.
The large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge the most as claimed in claim 1, it is characterized in that: described cushion cap includes the lower rotary table (4) being anchored at ground support column (7) and being fixed on support column (7), and lower ball pivot (2) is fixed on the upper surface of lower rotary table (4).
The large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge the most as claimed in claim 3, it is characterised in that: the surrounding of described lower rotary table (4) is provided with many lower prestress steel bundle (6) maintaining lower rotary table (4) upper surface to keep level.
The large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge the most as claimed in claim 1, it is characterised in that: described sheave (14) lower end is provided with many spikes (8)；Described propping up leaves gap between spike (8) lower end and the upper surface of top rotary table (3).
The large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge the most as claimed in claim 1, it is characterised in that: it is provided with the rotating shaft (11) that axis overlaps with ball pivot device centrage on described upper ball pivot (1)；The shaft sleeve (12) that axis overlaps it is provided with ball pivot device centrage on described lower ball pivot (2)；Described rotating shaft (11) upper end is fixed on ball pivot (1), in lower end extend into shaft sleeve (12) through upper ball pivot (1)；Described shaft sleeve (12) lower end is fixed on lower rotary table (4), and upper end is sheathed in rotating shaft (11) through lower ball pivot (2).
The large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge the most as claimed in claim 6, it is characterised in that: it is provided with many diagonal braces (13) on described shaft sleeve (12)；Described diagonal brace (13) lower end is fixed on shaft sleeve (12), and upper end is fixed on the lower surface of lower ball pivot (2).
The large eccentricity rotary body device of a kind of Curved Stayed-cable Bridge the most as claimed in claim 1, it is characterised in that: described lower ball pivot (2) is provided with two blocks of tetrafluoro plates (10) contacted with each other on the connecting end surface of upper ball pivot (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451883.2U CN205775887U (en) | 2016-05-18 | 2016-05-18 | A kind of large eccentricity rotary body device of Curved Stayed-cable Bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451883.2U CN205775887U (en) | 2016-05-18 | 2016-05-18 | A kind of large eccentricity rotary body device of Curved Stayed-cable Bridge |
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| CN205775887U true CN205775887U (en) | 2016-12-07 |
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| CN201620451883.2U Active CN205775887U (en) | 2016-05-18 | 2016-05-18 | A kind of large eccentricity rotary body device of Curved Stayed-cable Bridge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374352A (en) * | 2018-03-12 | 2018-08-07 | 中铁第四勘察设计院集团有限公司 | A kind of the pier bottom rotation swivel construction method and system of wide-plate bridge pier |
| CN111366299A (en) * | 2020-03-31 | 2020-07-03 | 中铁大桥科学研究院有限公司 | Method and device for measuring center of gravity of swivel part of swivel bridge |
| CN112854019A (en) * | 2021-01-12 | 2021-05-28 | 中铁工程设计咨询集团有限公司 | Eccentric arrangement method and device for turntable on curved steel truss girder |
| CN113356084A (en) * | 2021-06-08 | 2021-09-07 | 宁波市轨道交通集团有限公司 | Turning curve bridge structure and curve bridge eccentric turning construction method |
-
2016
- 2016-05-18 CN CN201620451883.2U patent/CN205775887U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374352A (en) * | 2018-03-12 | 2018-08-07 | 中铁第四勘察设计院集团有限公司 | A kind of the pier bottom rotation swivel construction method and system of wide-plate bridge pier |
| CN108374352B (en) * | 2018-03-12 | 2019-09-24 | 中铁第四勘察设计院集团有限公司 | A kind of the pier bottom rotation swivel construction method and system of wide-plate bridge pier |
| CN111366299A (en) * | 2020-03-31 | 2020-07-03 | 中铁大桥科学研究院有限公司 | Method and device for measuring center of gravity of swivel part of swivel bridge |
| CN112854019A (en) * | 2021-01-12 | 2021-05-28 | 中铁工程设计咨询集团有限公司 | Eccentric arrangement method and device for turntable on curved steel truss girder |
| CN113356084A (en) * | 2021-06-08 | 2021-09-07 | 宁波市轨道交通集团有限公司 | Turning curve bridge structure and curve bridge eccentric turning construction method |
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