CN104727222B - Separated steel and concrete combined cable tower anchorage zone structure - Google Patents
Separated steel and concrete combined cable tower anchorage zone structure Download PDFInfo
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- CN104727222B CN104727222B CN201510160675.7A CN201510160675A CN104727222B CN 104727222 B CN104727222 B CN 104727222B CN 201510160675 A CN201510160675 A CN 201510160675A CN 104727222 B CN104727222 B CN 104727222B
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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
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a separated steel and concrete combined cable tower anchorage zone structure which comprises a cable tower column in a stay cable anchorage zone. The stay cable anchorage zone of a cable tower is composed of two steel anchor boxes oppositely arranged in the bridge direction and a longitudinal connecting beam arranged between the two steel anchor boxes and enabling the two steel anchor boxes to be connected to form a whole. A concrete tower column at a stay cable anchorage zone section is separated and is connected with the steel anchor boxes through shear nails to form a steel and concrete combined structure, and then the steel and concrete combined structure is connected through the longitudinal connecting beam to form a whole. The longitudinal connecting beam bears horizontal pull forces transferred by the steel anchor boxes, and four separated concrete tower limbs bear vertical pressures transferred by the steel anchor boxes. The structural pattern between the two steel anchor boxes can be changed according to the bridge tower landscape demand, different-length setting and hollowing treatment can be performed, the problem of irregular-shaped bridge tower structure design is solved, the separated steel and concrete combined cable tower anchorage zone structure has the advantages of being clear in stress, attractive in appearance, low in construction cost, simple and the like, and concrete bridge tower style design space is widened.
Description
Technical field
The present invention relates to science of bridge building field, particularly to a kind of separate type steel reinforced concrete synthetic rope tower anchorage zone structure.
Background technology
Sarasota is the pyramidal structure that cable-stayed bridge anchors drag-line, that is, as main load-carrying members, is that embodiment cable-stayed bridge is whole again
The significant component of body landscape.Sarasota construction need to meet the intensity of bridge structure, rigidity, stability etc. and require.The drag-line of Sarasota
Anchoring position, be one and the locally concentrated forces of drag-line be distributed to total cross-section, and safely, be delivered evenly to the following tower in anchorage zone
The important stress structure of post, is the key position of cable-stayed bridge.At present, all using xoncrete structure, Sarasota anchors most of Sarasota
Area adopts combination anchor structure, undertakes drag-line horizontal pull with steel construction, undertakes vertical pressure with Concrete-filled steel tube, plays material
Expect respective advantage.Ordinary construction inside sets steel anchor box or steel anchor beam as suspension cable in tower for king-post using closing box-type section
Upper anchor system.Its appearance and modeling of such bridge tower anchoring structure is single, only column structure.King-post section is box-type section, if
Meter and construction are more complicated.Continuous Concrete-filled steel tube and steel anchor box are connected as a single entity, and are subjected to the level that steel anchor box is transmitted to and draw
Power, need to configure a large amount of prestressing force and offset tension in concrete.It is connected by welding or spiral shell between upper and lower two steel anchor box sections
Tether and connect, steel anchor box can undertake part compressive stress, unfavorable to steel construction stress.For complicated bridge tower moulding, typically using complete
Steel construction, but cost is high, fabrication and installation difficulty is big, maintenance cost is high, poor durability.
Content of the invention
In view of this, it is an object of the invention to provide a kind of separate type steel reinforced concrete synthetic rope tower anchorage zone structure, adopt and divide
Concrete solid pagoda limb from formula forms combination anchor structure with steel anchor box, and structural stability is good, and bridge tower integral rigidity is high, can fill
The characteristic of steel-concrete bi-material is waved in distribution, and design and construction are simple, not only solve a difficult problem for special-shaped bridge tower structure design,
And bridge tower is handsome in appearance.
The separate type steel reinforced concrete synthetic rope tower anchorage zone structure of the present invention is including the Sarasota post of staying cable anchorage zone, described oblique
Anchor-hold area is integral between two steel anchor boxes connecting steel anchor box to two steel anchor boxes being oppositely arranged and being arranged at along bridge
Longitude strut is constituted；
Further, described steel anchor box pours the concrete towers forming compound section with steel anchor box along direction across bridge two side
Limb, is connected using shear connector connecting elements between described steel anchor box and concrete towers limb；
Further, described steel anchor box layback plate is provided with described shear connector connecting elements be pbl shear connector, in WELDING STUDS
One or two combination；
Further, described shear connector connecting elements is WELDING STUDS, and described WELDING STUDS is fixedly installed on steel anchor box layback plate；
Further, the prestressed strand to tension is also distributed with for elimination of level on described compound section；
Further, the horizontal direction across bridge that described prestressed strand includes for concrete towers limb being anchored on steel anchor box both sides in advance should
Power steel bundle and the horizontal longitudinal prestressing steel bundle for eliminating longitudinal tension stress near the distribution of steel anchor box side wall concrete section,
Described horizontal direction across bridge prestressed strand and level are indulged bridge and are cut along combination by the way of one-end tension anchoring to prestressed strand
The crisscross distribution in face；
Further, along bridge in y type structure, horizontal bridge is in the type of falling y structure to described king-post；
Further, it is bolted to connection along between vertical two steel anchor boxes of described king-post；
Further, it is provided with for bolted flange connecting plate between described vertical two steel anchor boxes；
Further, it is fixedly connected for high-strength bolt between described longitude strut and steel anchor box.
Beneficial effects of the present invention: the separate type steel reinforced concrete synthetic rope tower anchorage zone structure of the present invention, by anchor-hold section
Concrete king-post makes detached form, connects into steel-concrete combined structure by WELDING STUDS and steel anchor box, then by longitude strut
Connect integral.Longitude strut undertakes the horizontal pull that steel anchor box transmission comes, and detached 4 concrete towers limbs undertake steel anchor box
The vertical pressure of transmission.Versions in the middle of two steel anchor boxes can need to change according to bridge tower landscape, can do different length and
Hollow out process, solve a difficult problem for special-shaped bridge tower structure design, have that stress is clear and definite, handsome in appearance, cost economic, simple structure
The advantages of, expand the design space of concrete bridge tower moulding.
Brief description
The invention will be further described with reference to the accompanying drawings and examples:
Fig. 1 is the planar structure schematic diagram of the present invention；
Fig. 2 is the elevation of the present invention；
Fig. 3 is Sarasota use state figure.
Specific embodiment
Fig. 1 is the planar structure schematic diagram of the present invention, and Fig. 2 is the elevation of the present invention, and Fig. 3 is Sarasota use state figure.
As shown in the figure: the separate type steel reinforced concrete synthetic rope tower anchorage zone structure of the present invention, including the Sarasota post 7 of staying cable anchorage zone, described
Staying cable anchorage zone on king-post 7 and is arranged at steel anchor box between two steel anchor boxes 1 from along bridge to two steel anchor boxes 1 being oppositely arranged
The integral longitude strut of 1 level connection joint 2 is constituted；Anchor-hold section concrete king-post 7 is made detached form, passes through
Longitude strut 2 between steel anchor box 1 connects integral, and the versions in the middle of two steel anchor boxes 1 need according to bridge tower landscape can
Do and change；" longitudinal " refer to along bridge to.
In the present embodiment, described steel anchor box 1 pours the coagulation forming compound section with steel anchor box 1 along direction across bridge two side
Native tower limb 3, is connected using shear connector connecting elements between described steel anchor box 1 and concrete towers limb 3；Steel anchor box 1 is placed in two and mixes
In the middle of solidifying soil tower limb 3, by shear connector connecting elements power transmission to concrete towers limb 3, concrete towers limb 3 adopts 4 separate types
Solid rectangular cross-section, combines formation compound section with steel anchor box 1, and solid concrete towers limb 3 provides enough pressurized section chis
Very little, design, construction are simple.
In the present embodiment, described steel anchor box 1 layback plate is provided with described shear connector connecting elements and is pbl shear connector, cuts
One of power nail or two kinds of combination.
In the present embodiment, described shear connector connecting elements is WELDING STUDS 4, and described WELDING STUDS 4 is fixedly installed on steel anchor box 1 side
On arm-tie；By WELDING STUDS 4 power transmission on layback plate to concrete towers limb 3, steel anchor box 1 by layback plate, end bearing plate, web,
The components such as anchor slab, anchor plate, diaphragm plate, connecting plate, ribbed stiffener form, and are coordinated with steel anchor box layback plate by making concrete side walls
Deformation, the fraction tension of generation.
In the present embodiment, the prestressed strand to tension is also distributed with for elimination of level on described compound section；With
In balance drag-line produce level to component, the deformation of confined concrete tower limb.
In the present embodiment, described prestressed strand includes concrete towers limb is anchored on the horizontal direction across bridge of steel anchor box both sides
Prestressed strand and the horizontal longitudinal prestressing for eliminating longitudinal tension stress near the distribution of steel anchor box side wall concrete section
Steel bundle, described horizontal direction across bridge prestressed strand and level indulge bridge to prestressed strand adopt one-end tension anchor by the way of along group
Close the crisscross distribution in section；Both sides concrete towers limb 3 and steel anchor box 1 fitted tightly it is ensured that concrete towers limb 3 and steel anchor
The common stress of case 1；In compound section, level is to the vertical, horizontal prestressed strand 5 arranging " well " font.If running through coagulation
The horizontal direction across bridge prestressed strand of native tower limb 3 and steel anchor box 1, concrete towers limb 3 near anchor case side set a small amount of level indulge bridge to
Prestressed strand, eliminates the fraction tension that this side concrete is produced due to compatible deformation with steel anchor box 1 layback plate；Prestressing force
Steel bundle 5 length is shorter, using can two times tensioning low retraction steel strand anchoring system, and using staggered one-end tension anchoring side
Formula is it is ensured that effective prestress acts on concrete towers limb 3.
Also it is distributed with described compound section and concrete towers limb 3 is anchored on the level of steel anchor box 1 both sides to prestress steel
Bundle 5；
In the present embodiment, described level to prestressed strand 5 using one-end tension anchoring by the way of along compound section in length and breadth
It is interspersed；For confined concrete deformation, balance the horizontal component of drag-line,
In the present embodiment, the company of being bolted along between vertical two steel anchor boxes 1 of Sarasota post 7 of described staying cable anchorage zone
Connect；" vertical two steel anchor boxes 1 of Sarasota post 7 of staying cable anchorage zone " refer to the steel up and down of the Sarasota post 7 of facade staying cable anchorage zone
Anchor case, adopts plain bolt to connect between upper and lower steel anchor box, not power transmission only meets location and installation needs.
In the present embodiment, it is provided with for bolted flange connecting plate between described vertical two steel anchor boxes 1；In steel anchor
Between case 1 sections arrange flange connecting plate, during connection with bolts to reach the purpose being located by connecting.
In the present embodiment, it is fixedly connected for high-strength bolt 6 between described longitude strut 2 and steel anchor box 1, installation rate
Hurry up, it is to avoid overhead welding operation is it is ensured that connect precision and quality.
Finally illustrate, above example only in order to technical scheme to be described and unrestricted, although with reference to relatively
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, the objective without deviating from technical solution of the present invention and scope, and it all should be covered at this
In the middle of the right of invention.
Claims (7)
1. a kind of separate type steel reinforced concrete synthetic rope tower anchorage zone structure it is characterised in that: include staying cable anchorage zone Sarasota post, institute
State staying cable anchorage zone whole between two steel anchor boxes connecting into steel anchor box to two steel anchor boxes being oppositely arranged and being arranged at along bridge
The longitude strut of body is constituted；Described steel anchor box pours the concrete forming compound section with steel anchor box along direction across bridge two side
Tower limb, is connected using shear connector connecting elements between described steel anchor box and concrete towers limb；Also it is distributed with described compound section
For prestressed strand from elimination of level to tension；Described prestressed strand includes for concrete towers limb being anchored on steel anchor box two
The horizontal direction across bridge prestressed strand of side and near the distribution of steel anchor box side wall concrete section for eliminating longitudinal tension stress
Horizontal longitudinal prestressing steel bundle, described horizontal direction across bridge prestressed strand and level are indulged bridge and are adopted one-end tension to prestressed strand
The mode of anchoring is along the crisscross distribution in compound section.
2. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 1 it is characterised in that: described steel anchor box
The combination that described shear connector connecting elements is one of pbl shear connector, WELDING STUDS or two kinds is provided with layback plate.
3. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 2 it is characterised in that: described shearing is bonded
Connection member is WELDING STUDS, and described WELDING STUDS is fixedly installed on steel anchor box layback plate.
4. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 1 it is characterised in that: described Sarasota post is suitable
To in y type structure, horizontal bridge is in the type of falling y structure to bridge.
5. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 1 it is characterised in that: along described Sarasota post
It is bolted to connection between vertical two steel anchor boxes.
6. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 5 it is characterised in that: described vertical two steel
It is provided with for bolted flange connecting plate between anchor case.
7. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 1 it is characterised in that: described vertical linkage
It is fixedly connected for high-strength bolt between beam and steel anchor box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510160675.7A CN104727222B (en) | 2015-04-07 | 2015-04-07 | Separated steel and concrete combined cable tower anchorage zone structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510160675.7A CN104727222B (en) | 2015-04-07 | 2015-04-07 | Separated steel and concrete combined cable tower anchorage zone structure |
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| CN104727222A CN104727222A (en) | 2015-06-24 |
| CN104727222B true CN104727222B (en) | 2017-01-18 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369736B (en) * | 2015-12-15 | 2017-05-10 | 安徽省交通控股集团有限公司 | Outer anchoring structure of cable-stayed bridge tower body |
| CN106400675B (en) * | 2016-08-31 | 2018-08-03 | 中交一公局第三工程有限公司 | A kind of steel anchor box and its installation method |
| CN107740345A (en) * | 2017-10-27 | 2018-02-27 | 广东省交通规划设计研究院股份有限公司 | A kind of monoblock type welds steel anchor box and its mounting process entirely |
| CN110886217B (en) * | 2019-09-06 | 2023-07-18 | 中铁二院工程集团有限责任公司 | Precast prestressed concrete anchor beam structure for anchoring stay cable and bridge tower |
| CN111005302B (en) * | 2019-12-30 | 2021-07-30 | 中交路桥华南工程有限公司 | Steel anchor beam mounting method |
| CN111287085A (en) * | 2020-01-08 | 2020-06-16 | 中铁大桥勘测设计院集团有限公司 | Novel steel-concrete combined stay cable tower anchoring structure and construction method thereof |
| CN111254827B (en) * | 2020-02-24 | 2021-08-27 | 中铁二院工程集团有限责任公司 | Stay cable and bridge tower anchoring structure and manufacturing method |
| CN113215985A (en) * | 2021-05-28 | 2021-08-06 | 中铁二十局集团第三工程有限公司 | Suspension bridge cable tower column anchor box mounting structure and method |
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| JP2002348813A (en) * | 2001-05-28 | 2002-12-04 | Sumitomo Constr Co Ltd | Method for constructing main tower of diagonal tensioning bridge |
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| CN104727222A (en) | 2015-06-24 |
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