CN106702884A - Steel anchor box for axial decompression of cable-stayed bridge - Google Patents
Steel anchor box for axial decompression of cable-stayed bridge Download PDFInfo
- Publication number
- CN106702884A CN106702884A CN201611007017.5A CN201611007017A CN106702884A CN 106702884 A CN106702884 A CN 106702884A CN 201611007017 A CN201611007017 A CN 201611007017A CN 106702884 A CN106702884 A CN 106702884A
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- China
- Prior art keywords
- steel
- anchor box
- steel anchor
- cable
- tower wall
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Classifications
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Disclosed is a steel anchor box for axial decompression of a cable-stayed bridge. The bisection force of stay cable anchoring force is mainly borne by the steel anchor box, so that the utilization rate of a material of the steel anchor box is improved, the extrusion force of the anchor box to tower walls of a bridge tower is effectively reduced, and accordingly, reducing of the construction cost of the bridge is facilitated. The steel anchor box is arranged between the tower walls of the two sides of the bridge tower and comprises a steel anchor segment and end steel plates welded at the two transverse ends of the steel anchor segment. Paired waveform steel plates are fixedly arranged between the end steel plates and the tower walls. The plate surfaces of the waveform steel plates extend vertically corresponding to the plate surfaces of the end steel plates and the surfaces of the tower walls.
Description
Technical field
The present invention relates to cable-stayed bridge, more particularly to a kind of cable-stayed bridge axial decompression steel anchor box.
Background technology
Cable-stayed bridge pylon is generally concrete hollow structure, and longitudinal both sides drag-line is anchored in bridge tower tower wall respectively.But tiltedly
Cable power is larger, can produce very big pulling force to bridge tower tower wall, it is sufficient to cause tower wall to be destroyed.In order to reduce suspension cable to tower wall
Pulling force, it is to avoid tower wall is destroyed, and steel anchor box is generally set between tower wall, and steel anchor box is fixed on bridge tower inwall, both sides drag-line point
Steel anchor box two ends are not anchored at, so that the pulling force of suspension cable is shared by steel anchor box and tower wall.
But due to steel anchor box tension cable horizontal component stretcher strain, can still apply greater level power to tower wall.Steel anchor box
Stress with tower wall is distributed by the deformation rigidity of respective horizontal distortion, in order to reduce tower wall stress, it is necessary to increase steel anchor box
Rigidity, so steel anchor box can use larger sectional dimension and thickness of slab, so but causes that steel anchor box stress is low, does not give full play to
Its material property, causes steel anchor box waste of material.On the other hand in order to further improve the drag of tower wall, typically also can be in tower wall
The interior prestressed cable that ring is set, to resist pulling force of the suspension cable to tower wall.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of cable-stayed bridge axial decompression steel anchor box, make suspension cable anchor force
Power of dividing equally mainly undertaken by steel anchor box, improve steel anchor box stock utilization, and effectively reduce extruding of the anchor case to bridge tower tower wall
Power, so as to advantageously reduce bridge construction cost.
The present invention solves the technical scheme that is used of the technical problem：
Cable-stayed bridge axial decompression steel anchor box of the invention, is arranged between the both sides tower wall of bridge tower, including steel anchor sections and
The end steel plate of its transverse ends is welded on, it is characterized in that：Paired waveform is fixedly installed between the end steel plate and tower wall
Steel plate, the plate face of corrugated sheet steel makees vertically extending relative to the plate face of end steel and the surface of tower wall.
The beneficial effects of the invention are as follows, using corrugated sheet steel axial rigidity it is weak the characteristics of, by the level of steel anchor box and tower wall
Distortion isolation is opened, and the power of dividing equally of suspension cable anchor force is mainly undertaken by steel anchor box, effectively reduces horizontal force suffered by tower wall, and
Allow steel anchor box to produce larger stretcher strain, give full play to the tensile property of steel anchor box steel, effectively improve material use
Rate, material-saving；Effectively reduce extruding force of the anchor case to bridge tower tower wall so that cancel the setting of ring prestressed cable in tower wall
It is possibly realized, further saves material, so as to advantageously reduces bridge construction cost.
Brief description of the drawings
This specification includes following six width accompanying drawing：
Fig. 1 is traditional steel anchor box structural representation.
Fig. 2 is the elevational schematic view of cable-stayed bridge axial decompression steel anchor box of the present invention；
Fig. 3 is the floor map of cable-stayed bridge axial decompression steel anchor box of the present invention；
Fig. 4 is the sectional view of the A-A along Fig. 2；
Fig. 5 is the sectional view of the B-B along Fig. 2；
Fig. 6 is the connection drawing of corrugated sheet steel in cable-stayed bridge axial decompression steel anchor box of the present invention.
Parts, toponym and corresponding mark are shown in figure：Steel anchor sections 1, tower wall 2, suspension cable anchor plate 3,
Suspension cable by positioning steel tube 4, corrugated sheet steel 5, inner side flat segments 51, outside flat segments 52, ribbed stiffener 6, inner side ribbed stiffener 61,
Outside ribbed stiffener 62, WELDING STUDS connector 7, end steel plate 8, junction steel plate 9.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Reference picture 1, traditional steel anchor box includes steel anchor sections and is welded on the end steel plate of its transverse ends, end in structure
WELDING STUDS connector is laid in the bottom surface of steel plate, and WELDING STUDS connector is embedded in tower wall concrete.Steel anchor box tension cable level point
Power stretcher strain, can apply greater level power to tower wall, and steel anchor box is firm by the deformation of respective horizontal distortion with the stress of tower wall
Degree distribution.In order to reduce tower wall stress, it is necessary to increase the rigidity of steel anchor box, thus steel anchor box can using larger sectional dimension and
Thickness of slab, so but causes that steel anchor box stress is low, does not give full play to its material property, causes steel anchor box waste of material.The opposing party
Face typically can also set the prestressed cable of ring, to resist suspension cable to further improve the drag of tower wall in tower wall
To the pulling force of tower wall.
Reference picture 2, Fig. 3 and Fig. 4, cable-stayed bridge axial decompression steel anchor box of the present invention, be arranged at bridge tower both sides tower wall 2 it
Between, including steel anchor sections 1 and the end steel plate 8 for being welded on its transverse ends.Fixation sets between the end steel plate 8 and tower wall 2
Be set to corrugated sheet steel 5,5 plate face of corrugated sheet steel 5 makees vertical relative to the plate face of end steel plate 8 and the surface of tower wall 2
Extend.Using the axial rigidity of corrugated sheet steel 5 it is weak the characteristics of, steel anchor box is kept apart with the horizontal distortion of tower wall, make suspension cable anchor
Gu the power of dividing equally of power is mainly undertaken by steel anchor box, horizontal force suffered by tower wall is effectively reduced, and it is larger to allow steel anchor box to produce
Stretcher strain, gives full play to the tensile property of steel anchor box steel, effectively improves stock utilization, material-saving.Effectively simultaneously
Anchor case is reduced to the extruding force of bridge tower tower wall so that cancels ring prestressed cable in tower wall is set to possibility, further
Material is saved, so as to advantageously reduce bridge construction cost.
Reference picture 5, the vertical two ends of the corrugated sheet steel 5 have inner side flat segments 51, outside flat segments 52 respectively.In pairs
Corrugated sheet steel 5 between, interval setting inner side ribbed stiffener 61, outside ribbed stiffener 62, inner side ribbed stiffener 61 and inner side flat segments 51,
End steel plate 8 is welded, and outside ribbed stiffener (62) is welded with outside flat segments 52, junction steel plate 9, to be prevented effectively from corrugated sheet steel 5
Two ends unstability and influence it with end steel plate 8, the switching performance of junction steel plate 9.Reference picture 2, the bottom surface cloth of the junction steel plate 9
If WELDING STUDS connector 7, WELDING STUDS connector 7 is embedded in the concrete of tower wall 2.
The above is some principles of the invention that explain through diagrams, and is not intended to for the present invention to be confined to shown and institute
In the concrete structure and the scope of application stated, therefore every corresponding modification for being possible to be utilized and equivalent, belong to this hair
Bright apllied the scope of the claims.
Claims (3)
1. cable-stayed bridge axial decompression steel anchor box, is arranged between the both sides tower wall (2) of bridge tower, including steel anchor sections (1) and welding
In the end steel plate (8) of its transverse ends, it is characterized in that：It is fixedly installed between the end steel plate (8) and tower wall (2) paired
Corrugated sheet steel (5), the plate face of (5) of corrugated sheet steel (5) is erected relative to the plate face of end steel plate (8) and the surface of tower wall (2)
To extension.
2. cable-stayed bridge axial decompression steel anchor box as claimed in claim 1, it is characterized in that：Vertical the two of the corrugated sheet steel (5)
End has inner side flat segments (51), outside flat segments (52) respectively；Between paired corrugated sheet steel (5), interval setting inner side adds
Strength rib (61), outside ribbed stiffener (62), inner side ribbed stiffener (61) are welded with inner side flat segments (51), end steel plate (8), and outside adds
Strength rib (62) is welded with outside flat segments (52), junction steel plate (9).
3. cable-stayed bridge axial decompression steel anchor box as claimed in claim 2, it is characterized in that：The bottom surface cloth of the junction steel plate (9)
If WELDING STUDS connector (7), WELDING STUDS connector (7) is embedded in tower wall (2) concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007017.5A CN106702884B (en) | 2016-11-16 | 2016-11-16 | Cable-stayed bridge axial decompression steel anchor box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007017.5A CN106702884B (en) | 2016-11-16 | 2016-11-16 | Cable-stayed bridge axial decompression steel anchor box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106702884A true CN106702884A (en) | 2017-05-24 |
| CN106702884B CN106702884B (en) | 2019-08-16 |
Family
ID=58940506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611007017.5A Active CN106702884B (en) | 2016-11-16 | 2016-11-16 | Cable-stayed bridge axial decompression steel anchor box |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629408A (en) * | 2009-08-14 | 2010-01-20 | 同济大学 | Composite anchoring structure on guyed tower end of cable-stayed bridge |
| KR101354641B1 (en) * | 2011-12-26 | 2014-01-27 | 지에스건설 주식회사 | Partially earth-anchored cable-stayed bridge construction method using main span prestressing appratus and anchoring box |
| CN203514196U (en) * | 2013-09-17 | 2014-04-02 | 同济大学 | Corrugated steel web combination-beam cable-stayed bridge cable beam anchoring structure |
| CN204676424U (en) * | 2015-05-19 | 2015-09-30 | 河南省交通规划勘察设计院有限责任公司 | Bridge cable body anchoring anchor head |
| CN105297613A (en) * | 2015-10-27 | 2016-02-03 | 中交第二公路勘察设计研究院有限公司 | Compact stay cable steel anchor beam and construction method thereof |
| CN206219970U (en) * | 2016-11-16 | 2017-06-06 | 中铁二院工程集团有限责任公司 | Cable-stayed bridge axial decompression steel anchor box |
-
2016
- 2016-11-16 CN CN201611007017.5A patent/CN106702884B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629408A (en) * | 2009-08-14 | 2010-01-20 | 同济大学 | Composite anchoring structure on guyed tower end of cable-stayed bridge |
| KR101354641B1 (en) * | 2011-12-26 | 2014-01-27 | 지에스건설 주식회사 | Partially earth-anchored cable-stayed bridge construction method using main span prestressing appratus and anchoring box |
| CN203514196U (en) * | 2013-09-17 | 2014-04-02 | 同济大学 | Corrugated steel web combination-beam cable-stayed bridge cable beam anchoring structure |
| CN204676424U (en) * | 2015-05-19 | 2015-09-30 | 河南省交通规划勘察设计院有限责任公司 | Bridge cable body anchoring anchor head |
| CN105297613A (en) * | 2015-10-27 | 2016-02-03 | 中交第二公路勘察设计研究院有限公司 | Compact stay cable steel anchor beam and construction method thereof |
| CN206219970U (en) * | 2016-11-16 | 2017-06-06 | 中铁二院工程集团有限责任公司 | Cable-stayed bridge axial decompression steel anchor box |
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| Publication number | Publication date |
|---|---|
| CN106702884B (en) | 2019-08-16 |
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