CN104727222A - Separated steel and concrete combined cable tower anchorage zone structure - Google Patents
Separated steel and concrete combined cable tower anchorage zone structure Download PDFInfo
- Publication number
- CN104727222A CN104727222A CN201510160675.7A CN201510160675A CN104727222A CN 104727222 A CN104727222 A CN 104727222A CN 201510160675 A CN201510160675 A CN 201510160675A CN 104727222 A CN104727222 A CN 104727222A
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- steel anchor
- anchorage zone
- steel
- bridge
- anchor box
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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
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 bridge engineering field, particularly a kind of separate type steel reinforced concrete synthetic rope tower anchorage zone structure.
Background technology
Sarasota is the pyramidal structure of cable stayed bridge anchoring drag-line, namely as main load-carrying members, is again the significant component embodying the overall view of cable stayed bridge.Sarasota structure need meet the requirement such as intensity, rigidity, stability of bridge construction.The anchor-hold position of Sarasota, is one and the locally concentrated forces of drag-line is distributed to total cross-section, and safely, be delivered evenly to anchorage zone with the important stress structure of lower king-post strut, be the key position of cable stayed bridge.At present, most of Sarasota all adopts concrete structure, and cable-pylon anchorage zone adopts combination anchor structure, namely bears drag-line horizontal pull with steel work, bears vertical pressure with Concrete-filled steel tube, plays material advantage separately.Ordinary construction is that king-post adopts closed box-type section, inside establishes steel anchor box or steel anchor beam as suspension cable anchor system on tower.Its appearance and modeling of this type of bridge tower anchoring structure is single, is only column structure.King-post cross section is box-type section, designs and constructs more complicated.Continuous print Concrete-filled steel tube and steel anchor box are connected as a single entity, and need bear steel anchor box transmission and the horizontal pull come, need configure a large amount of prestressing force and offset tensile stress in concrete.Connect between upper and lower two steel anchor box sections and adopt welding or bolt connection, steel anchor box can bear part compressive stress, stressed unfavorable to steel work.For the bridge tower moulding of complexity, generally adopt full steel structure, but cost is high, fabrication and installation difficulty large, maintenance cost is high, poor durability.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of separate type steel reinforced concrete synthetic rope tower anchorage zone structure, the concrete solid pagoda limb of separate type and steel anchor box is adopted to form combination anchor structure, structural stability is good, bridge tower integral rigidity is high, can give full play to the characteristic of steel-concrete bi-material, 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.
Separate type steel reinforced concrete synthetic rope tower anchorage zone structure of the present invention, comprise the Sarasota post of staying cable anchorage zone, described staying cable anchorage zone by along bridge to two steel anchor boxes be oppositely arranged be arranged at and between two steel anchor boxes, steel anchor box connected into overall longitude strut and form;
Further, described steel anchor box builds the concrete towers limb forming compound section with steel anchor box along direction across bridge two side, adopts shear connector connecting elements to be connected between described steel anchor box with concrete towers limb;
Further, described steel anchor box layback plate being provided with described shear connector connecting elements is one or both combination in PBL shear connector, WELDING STUDS;
Further, described shear connector connecting elements is WELDING STUDS, and described WELDING STUDS is fixedly installed on steel anchor box layback plate;
Further, described compound section is also distributed with for the prestressed strand of elimination of level to tensile stress;
Further, described prestressed strand comprises horizontal direction across bridge prestressed strand concrete towers limb being anchored on steel anchor box both sides and the horizontal longitudinal prestressing steel bundle being used for eliminating longitudinal tension stress distributed near steel anchor box sidewall concrete section, and described horizontal direction across bridge prestressed strand and level indulge bridge adopts mode crisscross distribution along compound section from one-end tension anchoring to prestressed strand;
Further, described king-post is along bridge to being y-type structure, and horizontal bridge is inverted Y-shaped structure;
Further, be bolted to connection between vertical two steel anchor boxes of described king-post;
Further, be provided with for bolted flange connecting plate between described vertical two steel anchor boxes;
Further, described longitude strut with between steel anchor box for high-strength bolt is fixedly connected with.
Beneficial effect of the present invention: separate type steel reinforced concrete synthetic rope tower anchorage zone structure of the present invention, makes the form of separation, connects into steel-concrete combined structure, then connect into entirety by longitude strut by WELDING STUDS and steel anchor box by anchor-hold section concrete king-post.Longitude strut bears the horizontal pull that steel anchor box transmission comes, and 4 concrete towers limbs of separation bear the vertical pressure of steel anchor box transmission.Form of structure in the middle of two steel anchor boxes can need change according to bridge tower view, different length can be done and hollow out process, solve a difficult problem for special-shaped bridge tower structure design, there is stressed clear and definite, handsome in appearance, the advantage such as cost economic, simple structure, expanded the design space of concrete bridge tower moulding.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is plane structure schematic diagram of the present invention;
Fig. 2 is elevation of the present invention;
Fig. 3 is Sarasota using state figure.
Detailed description of the invention
Fig. 1 is plane structure schematic diagram of the present invention, and Fig. 2 is elevation of the present invention, and Fig. 3 is Sarasota using state figure.As shown in the figure: separate type steel reinforced concrete synthetic rope tower anchorage zone structure of the present invention, comprise the Sarasota post 7 of staying cable anchorage zone, steel anchor box 1 level connection joint longitude strut 2 integrally forms to two steel anchor boxes 1 be oppositely arranged and being arranged between two steel anchor boxes 1 by along bridge by the staying cable anchorage zone on described king-post 7; Anchor-hold section concrete king-post 7 is made the form of separation, connect into entirety by the longitude strut 2 between steel anchor box 1, the form of structure in the middle of two steel anchor boxes 1 needs to do to change according to bridge tower view; " longitudinal direction " refer to along bridge to.
In the present embodiment, described steel anchor box 1 builds the concrete towers limb 3 forming compound section with steel anchor box 1 along direction across bridge two side, and described steel anchor box 1 is connected with adopting shear connector connecting elements between concrete towers limb 3; Steel anchor box 1 is placed in the middle of two concrete towers limbs 3, by the power transmission of shear connector connecting elements to concrete towers limb 3, concrete towers limb 3 adopts the solid rectangular cross-section of 4 separate types, compound section is combined to form with steel anchor box 1, solid concrete towers limb 3 provides enough pressurized sectional dimensions, and design, construction are simply.
In the present embodiment, described steel anchor box 1 layback plate being provided with described shear connector connecting elements is one or both combination in PBL shear connector, WELDING STUDS.
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 layback plate; By WELDING STUDS 4 power transmission on layback plate to concrete towers limb 3, steel anchor box 1 is made up of components such as layback plate, end bearing plate, web, anchor slab, anchor plate, diaphragm, junction plate, stiffening ribs, by making concrete side walls and steel anchor box layback plate compatible deformation, the fraction tensile stress of generation.
In the present embodiment, described compound section is also distributed with for the prestressed strand of elimination of level to tensile stress; For balancing the level of drag-line generation to component, the distortion of confined concrete tower limb.
In the present embodiment, described prestressed strand comprises horizontal direction across bridge prestressed strand concrete towers limb being anchored on steel anchor box both sides and the horizontal longitudinal prestressing steel bundle being used for eliminating longitudinal tension stress distributed near steel anchor box sidewall concrete section, and described horizontal direction across bridge prestressed strand and level indulge bridge adopts mode crisscross distribution along compound section from one-end tension anchoring to prestressed strand; By fitting tightly of both sides concrete towers limb 3 and steel anchor box 1, ensure that concrete towers limb 3 and steel anchor box 1 are jointly stressed; In compound section, level is to the vertical, horizontal prestressed strand 5 arranging " well " font.If run through the horizontal direction across bridge prestressed strand of concrete towers limb 3 and steel anchor box 1, concrete towers limb 3 establishes a small amount of level to indulge bridge to prestressed strand near anchor case side, eliminates the fraction tensile stress that this side concrete and steel anchor box 1 layback plate produce due to compatible deformation; Prestressed strand 5 length is shorter, and adopting can the low retraction steel strand anchoring system of two times tensioning, and adopts staggered one-end tension anchorage style, ensure that effective prestress acts on concrete towers limb 3.
Described compound section is also distributed with concrete towers limb 3 is anchored on steel anchor box 1 both sides level to prestressed strand 5;
In the present embodiment, described level adopts the crisscross distribution along compound section of the mode of one-end tension anchoring to prestressed strand 5; In order to confined concrete distortion, the horizontal component of balance drag-line,
In the present embodiment, along described staying cable anchorage zone vertical two steel anchor boxes 1 of Sarasota post 7 between be bolted to connection; " vertical two steel anchor boxes 1 of Sarasota post 7 of staying cable anchorage zone " refer to the steel anchor box up and down of the Sarasota post 7 of facade staying cable anchorage zone, adopt plain bolt to connect, not power transmission, only meet location and installation needs between upper and lower steel anchor box.
In the present embodiment, be provided with for bolted flange connecting plate between described vertical two steel anchor boxes 1; Between steel anchor box 1 sections, flange connecting plate is set, with bolts to reach the object be located by connecting during connection.
In the present embodiment, described longitude strut 2 is fixedly connected with for high-strength bolt 6 with between steel anchor box 1, and installation rate is fast, avoids overhead welding operation, ensure that and connects precision and quality.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. a separate type steel reinforced concrete synthetic rope tower anchorage zone structure, it is characterized in that: the Sarasota post comprising staying cable anchorage zone, described staying cable anchorage zone by along bridge to two steel anchor boxes be oppositely arranged be arranged at and between two steel anchor boxes, steel anchor box connected into overall longitude strut and form.
2. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 1, it is characterized in that: described steel anchor box builds the concrete towers limb forming compound section with steel anchor box along direction across bridge two side, between described steel anchor box with concrete towers limb, adopt shear connector connecting elements to be connected.
3. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 2, is characterized in that: described steel anchor box layback plate being provided with described shear connector connecting elements is one or both combination in PBL shear connector, WELDING STUDS.
4. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 3, it is characterized in that: described shear connector connecting elements is WELDING STUDS, described WELDING STUDS is fixedly installed on steel anchor box layback plate.
5. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 2, is characterized in that: described compound section is also distributed with for the prestressed strand of elimination of level to tensile stress.
6. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 5, it is characterized in that: described prestressed strand comprises horizontal direction across bridge prestressed strand concrete towers limb being anchored on steel anchor box both sides and the horizontal longitudinal prestressing steel bundle being used for eliminating longitudinal tension stress distributed near steel anchor box sidewall concrete section, described horizontal direction across bridge prestressed strand and level indulge bridge adopts mode crisscross distribution along compound section from one-end tension anchoring to prestressed strand.
7. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 1, is characterized in that: described king-post is along bridge to being y-type structure, and horizontal bridge is inverted Y-shaped structure.
8. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 1, is characterized in that: be bolted to connection between vertical two steel anchor boxes of described king-post.
9. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 8, is characterized in that: be provided with for bolted flange connecting plate between described vertical two steel anchor boxes.
10. separate type steel reinforced concrete synthetic rope tower anchorage zone structure according to claim 1, is characterized in that: described longitude strut with between steel anchor box for high-strength bolt is fixedly connected with.
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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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| 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 true CN104727222A (en) | 2015-06-24 |
| CN104727222B CN104727222B (en) | 2017-01-18 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369736A (en) * | 2015-12-15 | 2016-03-02 | 安徽省交通控股集团有限公司 | Outer anchoring structure of cable-stayed bridge tower body |
| CN106400675A (en) * | 2016-08-31 | 2017-02-15 | 中交公局第三工程有限公司 | Steel anchor box and mounting method thereof |
| 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 |
| CN110886217A (en) * | 2019-09-06 | 2020-03-17 | 中铁二院工程集团有限责任公司 | Precast prestressed concrete anchor beam structure anchored by stay cable and bridge tower |
| CN111005302A (en) * | 2019-12-30 | 2020-04-14 | 中交路桥华南工程有限公司 | Steel anchor beam mounting method |
| CN111254827A (en) * | 2020-02-24 | 2020-06-09 | 中铁二院工程集团有限责任公司 | Stay cable and bridge tower anchoring structure and manufacturing 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 |
| 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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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN105369736A (en) * | 2015-12-15 | 2016-03-02 | 安徽省交通控股集团有限公司 | Outer anchoring structure of cable-stayed bridge tower body |
| CN106400675A (en) * | 2016-08-31 | 2017-02-15 | 中交公局第三工程有限公司 | Steel anchor box and mounting method thereof |
| 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 |
| CN110886217A (en) * | 2019-09-06 | 2020-03-17 | 中铁二院工程集团有限责任公司 | Precast prestressed concrete anchor beam structure anchored by stay cable and bridge tower |
| CN111005302A (en) * | 2019-12-30 | 2020-04-14 | 中交路桥华南工程有限公司 | Steel anchor beam mounting method |
| 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 |
| CN111254827A (en) * | 2020-02-24 | 2020-06-09 | 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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