CN110373991A - A kind of raising large span stayed-cable bridge lateral stiffness construction - Google Patents
A kind of raising large span stayed-cable bridge lateral stiffness construction Download PDFInfo
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- CN110373991A CN110373991A CN201910588357.9A CN201910588357A CN110373991A CN 110373991 A CN110373991 A CN 110373991A CN 201910588357 A CN201910588357 A CN 201910588357A CN 110373991 A CN110373991 A CN 110373991A
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- suspension cable
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- 238000010276 construction Methods 0.000 title claims abstract description 26
- 239000000725 suspension Substances 0.000 claims abstract description 65
- 238000004873 anchoring Methods 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
-
- 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
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A kind of raising large span stayed-cable bridge lateral stiffness construction, to effectively improve the lateral stiffness of bridge main span, hence it is evident that improve bridge dynamic characteristics, it is ensured that safety and comfort when train driving, and advantageously reduce bridge construction cost.Suspension cable includes that both ends are anchored at bridge tower, the end bay suspension cable on end bay girder respectively, and both ends be anchored at respectively bridge tower, in across on girder across suspension cable, in be made of across suspension cable pairs of left side suspension cable, right side suspension cable, bridge tower includes left king-post and right king-post.The upper end anchor point of the left side suspension cable is arranged on left king-post, anchoring lower ends point be arranged in the right side across girder.The upper end anchor point of the right side suspension cable is arranged on right king-post, anchoring lower ends point be arranged in the left side across girder.It is each that space crossed rope face is formed in direction across bridge lateral cross to left side suspension cable, right side suspension cable, closing triangle is spatially formed across main beam section in.
Description
Technical field
The present invention relates to cable-stayed bridge, in particular to a kind of raising large span stayed-cable bridge lateral stiffness construction.
Background technique
In recent years, Bridges in Our Country construction achieves rapid development, transportation network more intensive perfect, Line for Passenger Transportation, height
Fast railway construction has reached peak period, and more and more large span stayed-cable bridges become the important work in railway or highway construction
Journey.However, the width of main beam for functional requirement that these bridges have itself is narrow, how large span stayed-cable bridge meets lateral stiffness
Demand also become design difficulty.
When bullet train passes through bridge, bridge can generate vibration, and Oscillation Amplitude is excessive, will affect traffic safety and multiplies
Objective comfort level.Bridge vibration and bridge stiffness have direct correlation, to reduce vibration, it is necessary to reinforce the control to bridge stiffness.It is right
For Long-Span Railway Cable-Stayed Bridge, vertical rigidity can be adjusted by increasing self weight or the deck-molding of bridge, and in direction across bridge
Under conditions of bridge deck width has met lane and arranged, scale is difficult to adjust on a large scale bridge stiffness.To improve suspension cable
Lateral stiffness, it is general using the methods of width of main beam, increase auxiliary pier is increased, considerably increase the construction cost of bridge construction.
Long-Span Railway Cable-Stayed Bridge causes its lateral stiffness small because of the features such as itself span is big, bridge floor is narrow.Longspan Bridge
Mostly flexible structure, as span continues to increase, and the effective width of bridge goes to be held essentially constant, and bridge width gradually subtracts
Small, lateral stiffness is obviously insufficient.When train running speed is smaller, bridge lateral amplitude is little, but mentioning with train speed
The continuous promotion that high and bridge span requires, bridge lateral vibration problems caused by train operation increasingly draw attention, to iron
The lateral stiffness of road and bridge beam requires also very strict.Therefore, the lateral stiffness of Long-Span Railway Cable-Stayed Bridge how is effectively improved just
Become the safety of Long-Span Railway Cable-Stayed Bridge design and the control selector of passenger's comfort.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of raising large span stayed-cable bridge lateral stiffness constructions, with effective
Improve the lateral stiffness of bridge main span, hence it is evident that improve bridge dynamic characteristics, it is ensured that safety and comfort when train driving, and
Advantageously reduce bridge construction cost.
The technical solution adopted by the present invention to solve the technical problems is as follows:
A kind of raising large span stayed-cable bridge lateral stiffness construction of the invention, suspension cable includes that both ends are anchored at bridge respectively
End bay suspension cable and both ends on tower, end bay girder be anchored at respectively bridge tower, in across on girder across suspension cable, in across
Suspension cable is made of pairs of left side suspension cable, right side suspension cable, and bridge tower includes left king-post and right king-post, it is characterized in that: described
The upper end anchor point of left side suspension cable is arranged on left king-post, anchoring lower ends point be arranged in the right side across girder；The right side
The upper end anchor point of suspension cable is arranged on right king-post, anchoring lower ends point be arranged in the left side across girder；It is each to left side oblique pull
Rope, right side suspension cable form space crossed rope face in direction across bridge lateral cross, spatially form closing across main beam section in
Triangle.
The bridge tower is in the X-type bridge tower that X shape intersects in direction across bridge using its Zuo Tazhu, right king-post.
Each anchor point to left side suspension cable, right side suspension cable across girder two sides in forms lower anchor point height difference,
Anchor point on left king-post and right king-post forms upper anchor point height difference, and lower anchor point height difference is equal with upper anchor point height difference, and
Equal to the half that adjacent left-hand suspension cable, right side suspension cable vertically anchor distance on bridge tower.
The invention has the advantages that suspension cable lateral cross, which is formed one kind, within the scope of main span can be improved bridge lateral
The lateral angle of the novel rope face form of rigidity, main span inclined cable face and bridge floor is smaller than other rope faces arrangement form, can be with
Bigger horizontal component is provided, the lateral stiffness of bridge main span is effectively improved, reduces the transversely deforming of bridge；It is obviously improved bridge
Dynamic characteristics, it is ensured that safety and comfort when train driving；It is rigid that bridge lateral is improved under conditions of width of main beam is certain
Degree, greatly reduces construction cost.
Detailed description of the invention
This specification includes following four width attached drawing:
Fig. 1 is a kind of suitable bridge for improving large span stayed-cable bridge lateral stiffness construction of the present invention to elevation；
Fig. 2 is bridge tower direction across bridge elevation in a kind of raising large span stayed-cable bridge lateral stiffness construction of the present invention；
Fig. 3 is across suspension cable upper end anchor point signal in a kind of raising large span stayed-cable bridge lateral stiffness construction of the present invention
Figure；
Fig. 4 is across suspension cable anchoring lower ends point signal in a kind of raising large span stayed-cable bridge lateral stiffness construction of the present invention
Figure.
Component and corresponding label are shown in figure: component and corresponding label: bridge tower 10, Zuo Tazhu 11, the right side are shown in figure
King-post 12, in across girder 20, end bay girder 21, end bay suspension cable 30, in across suspension cable 31, left side suspension cable 31a, right side oblique pull
Rope 31b, bracket 32, lower anchor point height difference H1, upper anchor point height difference H2, vertical anchoring distance H3。
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Referring to Figures 1 and 2, a kind of raising large span stayed-cable bridge lateral stiffness of the invention construction, suspension cable includes both ends
Be anchored at respectively bridge tower 10, the end bay suspension cable 30 on end bay girder 21 and both ends be anchored at respectively bridge tower 10, in across girder
Across suspension cable 31 on 20, in across suspension cable 31 by including pairs of left side suspension cable 31a, right side suspension cable 31b is formed, bridge tower
10 include left king-post 11 and right king-post 12.The upper end anchor point of the left side suspension cable 31a is arranged on left king-post 11, lower end anchor
Solid point be arranged in the right side across girder 20.The upper end anchor point of the right side suspension cable 31b is arranged on right king-post 12, lower end
Anchor point be arranged in the left side across girder 20.It is each to left side suspension cable 31a, right side suspension cable 31b in direction across bridge lateral cross
Space crossed rope face is formed, spatially forms closing triangle across 20 section of girder in.
Referring to Figures 1 and 2, end bay suspension cable 30 is using conventional rope face, by main span suspension cable lateral cross within the scope of main span
The lateral angle of a kind of novel rope face form that lateral rigidity of bridge can be improved, main span inclined cable face and bridge floor is than other rope faces
Arrangement form is smaller, can provide bigger horizontal component, effectively improves the lateral stiffness of bridge main span, reduces the transverse direction of bridge
Deformation；It is obviously improved bridge dynamic characteristics, it is ensured that safety and comfort when train driving.In the wide certain condition of bridge bridge
Lower raising lateral rigidity of bridge, greatly reduces construction cost.Intersect rope under by same horizontal loads according to measuring and calculating
Maximum transversal displacement in than conventional rope face across girder 3 reduces about 15% -30%, substantially increase in across lateral stiffness,
The construction cost of the lesser large span stayed-cable bridge of width can be greatly reduced.
Referring to Fig. 2, the bridge tower 10 is in the X-type bridge tower that X shape intersects in direction across bridge using its left king-post 11, right king-post 12,
To increase left side suspension cable 31a, right side suspension cable 31b slope, so that left side suspension cable 31a, right side suspension cable 31b and bridge floor have
There is smaller angle.
Referring to Fig. 3 and Fig. 4, each anchoring to left side suspension cable 31a, right side suspension cable 31b across girder two sides in
Point forms the solid point height difference H that casts anchor1, the anchor point on left king-post 11 and right king-post 12 forms upper anchor point height difference H2, lower anchor point
Height difference H1With upper anchor point height difference H2It is equal, to ensure that the two does not contact with each other in space.Lower anchor point height difference H1With upper anchoring
Point height difference H2Can also be unequal, but laterally the slope of two skew cables is different at this time, and the landscape effect of bridge is poor.To ensure
Drag-line does not intersect and landscape, under optimal situation, lower anchor point height difference H in space1With upper anchor point height difference H2It is equal, and wait
Distance H is vertically anchored on bridge tower 10 in adjacent left-hand suspension cable 31a, right side suspension cable 31b3Half.
Referring to Fig. 4, each left side suspension cable 31a, right side suspension cable 31b be anchored in it is overhanging across 20 section two sides of girder
Bracket 32 on.
The above is a kind of some originals for improving large span stayed-cable bridge lateral stiffness construction of the present invention that explain through diagrams
Reason, be not intended to for the present invention to be confined to shown in and the specific structure and the scope of application in, therefore it is all it is all may be sharp
Corresponding modification and equivalent belong to the applied the scope of the patents of the present invention.
Claims (4)
1. a kind of raising large span stayed-cable bridge lateral stiffness construction, suspension cable includes that both ends are anchored at bridge tower (10), end bay respectively
On girder (21) end bay suspension cable (30) and both ends be anchored at respectively bridge tower (10), in across on girder (20) across oblique pull
Rope (31), in across suspension cable (31) by including pairs of left side suspension cable (31a), right side suspension cable (31b) forms, bridge tower (10) packet
Zuo Tazhu (11) and right king-post (12) are included, it is characterized in that: the upper end anchor point of the left side suspension cable (31a) is arranged in left king-post
(11) on, anchoring lower ends point be arranged in the right side across girder (20)；The upper end anchor point of the right side suspension cable (31b) is arranged
On right king-post (12), anchoring lower ends point be arranged in the left side across girder (20)；It is each oblique to left side suspension cable (31a), right side
Drag-line (31b) forms space crossed rope face in direction across bridge lateral cross, spatially forms closing across girder (20) section in
Triangle.
2. a kind of raising large span stayed-cable bridge lateral stiffness construction as described in claim 1, it is characterized in that: the bridge tower (10)
The X-type bridge tower intersected in direction across bridge in X shape using its Zuo Tazhu (11), right king-post (12).
3. a kind of raising large span stayed-cable bridge lateral stiffness construction as described in claim 1, it is characterized in that: described each to left side
The anchor point of suspension cable (31a), right side suspension cable (31b) across girder two sides in forms lower anchor point height difference (H1), in Zuo Ta
Anchor point on column (11) and right king-post (12) forms anchor point height difference (H2), lower anchor point height difference (H1) high with upper anchor point
Difference (H2) equal, and distance is vertically anchored on bridge tower (10) equal to adjacent left-hand suspension cable (31a), right side suspension cable (31b)
(H3) half.
4. a kind of raising large span stayed-cable bridge lateral stiffness construction as described in claim 1, it is characterized in that: each left side is oblique
Drag-line (31a), right side suspension cable (31b) be anchored in across on the overhanging bracket (32) in girder (20) section two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588357.9A CN110373991A (en) | 2019-07-02 | 2019-07-02 | A kind of raising large span stayed-cable bridge lateral stiffness construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588357.9A CN110373991A (en) | 2019-07-02 | 2019-07-02 | A kind of raising large span stayed-cable bridge lateral stiffness construction |
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| CN110373991A true CN110373991A (en) | 2019-10-25 |
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| CN201910588357.9A Pending CN110373991A (en) | 2019-07-02 | 2019-07-02 | A kind of raising large span stayed-cable bridge lateral stiffness construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115952711A (en) * | 2022-12-03 | 2023-04-11 | 中铁大桥勘测设计院集团有限公司 | Cable-stayed-suspension cable cooperative system bridge design method and cooperative system bridge |
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| CN1244612A (en) * | 1999-09-03 | 2000-02-16 | 清华大学 | Large-span bidirectional-stay cable bridge |
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| CN107724226A (en) * | 2017-11-13 | 2018-02-23 | 安徽省交通控股集团有限公司 | Suspension cable suspension cable co-operative system bridge is turned round in a kind of four rope faces in the same direction |
| CN208415119U (en) * | 2018-07-06 | 2019-01-22 | 中铁二院工程集团有限责任公司 | A kind of transversely deforming control device of expanded letter steel girder erection |
| CN210766335U (en) * | 2019-07-02 | 2020-06-16 | 中铁二院工程集团有限责任公司 | Structure for improving transverse rigidity of large-span cable-stayed bridge |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0718626A (en) * | 1993-06-18 | 1995-01-20 | Nippon Steel Corp | Suspended scaffold for laying cable |
| CN1244612A (en) * | 1999-09-03 | 2000-02-16 | 清华大学 | Large-span bidirectional-stay cable bridge |
| CA2486422A1 (en) * | 2003-10-31 | 2005-04-30 | Watson Bowman Acme Corporation | Expansion joint system including damping means |
| CN101368366A (en) * | 2008-09-13 | 2009-02-18 | 汪金来 | Cantilever beam external anchor stayed-cable bridge |
| CN103966943A (en) * | 2013-01-24 | 2014-08-06 | 中交公路规划设计院有限公司 | Structural system for controlling transverse response of cable-stayed bridge main beam, auxiliary pier and transition pier |
| CN103061245A (en) * | 2013-01-25 | 2013-04-24 | 安徽省交通投资集团有限责任公司 | Cable-stayed bridge with same-direction rotation stayed cable system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115952711A (en) * | 2022-12-03 | 2023-04-11 | 中铁大桥勘测设计院集团有限公司 | Cable-stayed-suspension cable cooperative system bridge design method and cooperative system bridge |
| CN115952711B (en) * | 2022-12-03 | 2024-06-18 | 中铁大桥勘测设计院集团有限公司 | Cable-stayed and suspension cable cooperation system bridge design method and cooperation system bridge |
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