CN104264575B - A kind of prestress steel case Concrete Combination Continuous Beam bridge structure and construction technology - Google Patents
A kind of prestress steel case Concrete Combination Continuous Beam bridge structure and construction technology Download PDFInfo
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- CN104264575B CN104264575B CN201410468282.8A CN201410468282A CN104264575B CN 104264575 B CN104264575 B CN 104264575B CN 201410468282 A CN201410468282 A CN 201410468282A CN 104264575 B CN104264575 B CN 104264575B
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
- E01D2101/285—Composite prestressed concrete-metal
Abstract
The present invention relates to a kind of prestress steel case Concrete Combination Continuous Beam bridge structure, comprise bridge pier, girder and concrete bridge deck, described bridge pier is connected with girder by bridge pier bearing pad, described girder is arranged between adjacent bridge pier, be connected with adjacent girder with steel bundle by concrete, described concrete bridge deck is laid on girder, described girder comprises many steel girders be arranged in parallel, the gooseneck that described many parallel steel girders are arranged perpendicular to steel girder by many is interconnected, described steel girder comprises steel box structure, steel web and steel sole plate, described steel sole plate is connected with steel box structure by steel web, described steel box structure lower end is connected with bridge pier by bridge pier bearing pad, upper end is connected with concrete bridge deck, the whole height of described steel girder is that secondary parabolic curve smoothly successively decreases to span centre above bridge pier.Compared with prior art, the present invention has that rigidity is large, rational in infrastructure, construction is simple, be easy to the advantages such as maintenance.
Description
Technical field
The present invention relates to bridge field, especially relate to a kind of prestress steel case Concrete Combination Continuous Beam bridge structure and construction technology
Background technology
Composite beam bridge refers to the bridge adopting bi-material to combine in same cross section, is generally made up of steel and concrete.
Existing steel case Concrete Combination Continuous Beam bridge adopts open steel box, be connected with precast concrete bridge deck by the WELDING STUDS on web top and cast-in-situ concrete, for prevent pier top the decking in the negative moment region concrete pulling stress excessive and cause cracking, arrange in prefabricated bridge inside prestressed strand or hogging moment area apply external prestressing.Prior art has problems:
1, top board prestress application difficulty, and degree of prestressing is restricted, the people such as Zhang Nan point out in document external prestressing is to the impact analysis of steel case Concrete Combination Continuous Beam bridge flexural property, pre-stress construction stretch-draw need after bridge deck have been constructed, carry out in case inner sealing space during stretch-draw, but construction space is limited, and anchor point local stress is excessive easily causes concrete cracking.
2, prestressing force base plate applied directly is passed to girder steel by WELDING STUDS, existing steel case Concrete Combination Continuous Beam bridge adopts open steel box, be connected with precast concrete bridge deck by the WELDING STUDS on web top and cast-in-situ concrete, no matter employing body is interior or external prestressing, compressive stress always needs to be transmitted by WELDING STUDS, due to live loading, WELDING STUDS shear stress amplitude of variation is comparatively large, and the steel work antifatigue for welding is totally unfavorable.
3, steel case internal corrosion, maintenance difficulty, the inner anticorrosive coating of the steel case closed general service life is about 15 years, cross after date again coating decoration narrow space be difficult to operation.
Summary of the invention
Object of the present invention is exactly provide to overcome defect that above-mentioned prior art exists the prestress steel case Concrete Combination Continuous Beam bridge structure and construction technology that a kind of rigidity is large, rational in infrastructure, construction is simple, be easy to maintenance.
Object of the present invention can be achieved through the following technical solutions:
A kind of prestress steel case Concrete Combination Continuous Beam bridge structure, comprise bridge pier, girder and concrete bridge deck, described bridge pier is connected with girder by bridge pier bearing pad, described girder is arranged between adjacent bridge pier, be connected with adjacent girder with steel bundle by concrete, described concrete bridge deck is laid on girder, described girder comprises many steel girders be arranged in parallel, the gooseneck that described many parallel steel girders are arranged perpendicular to steel girder by many is interconnected, described steel girder comprises steel box structure, steel web and steel sole plate, described steel sole plate is connected with steel box structure by steel web, described steel box structure lower end is connected with bridge pier by bridge pier bearing pad, upper end is connected with concrete bridge deck, the whole height of described steel girder is that secondary parabolic curve smoothly successively decreases to span centre above bridge pier.
Described steel box structure comprises steel case and prestressed strand, described steel case upper end open, inner fill concrete, be made up of steel box plate and steel case side plate, described steel box plate is connected with steel web, described steel case inside is provided with many prestressed pore passages, and described prestressed strand is arranged on prestressed pore passage inside, and described prestressed strand is connected with steel sole plate.
The whole height of described steel case successively decreases to span centre above bridge pier.
When described steel box structure is above bridge pier, adopt following structure:
Described steel case height is that pier back timber is high, described steel case by concrete be connected stirrup and be fixedly connected with concrete bridge deck, described steel box plate is directly connected with bridge pier bearing pad.
When described steel box structure is above span centre, adopt following structure:
Described steel web height is span centre deck-molding, and described concrete bridge deck is directly connected with steel web by steel box plate, and described steel box plate is fixedly connected with steel box plate by WELDING STUDS.
Described gooseneck is provided with crossbeam connecting portion, is connected between many goosenecks by crossbeam connecting portion.
Described steel web is provided with vertical stiffening rib and longitudinal stiffener.
A kind of prestress steel case Concrete Combination Continuous Beam bridge construction technique, comprises the following steps:
1) construction pier footing and bridge pier pier, and machined steel girder;
2) bridge pier bearing pad of pier coping portion is installed, and hole-specifically sets up steel girder;
3) lateral connection between many steel girders is carried out;
4) longitudinally steel girder and bridge pier is connected;
5) to fluid concrete in hogging moment area steel case above bridge pier, steel box top opening lower edge 3 ~ 5cm At The Height is poured into and maintenance;
6) hogging moment area concrete bridge deck base plate above bridge pier is set up;
7) to construct hogging moment area concrete bridge deck steel mesh reinforcement above bridge pier, hogging moment area bridge floor steel mesh reinforcement and the corresponding spot welding of steel box top U-type groove above bridge pier, while be connected stirrup colligation and connect;
8) the decking in the negative moment region concrete maintenance is poured into a mould;
9) hogging moment area prestressed strand anchoring above stretch-draw bridge pier, mud jacking;
10) span centre district concrete bridge deck construction of bottom plates is carried out;
11) construction span centre some residual bridge floor steel mesh reinforcement, span centre district concrete bridge deck steel mesh reinforcement is connected by WELDING STUDS colligation with steel girder;
10) part concrete slab concrete in casting bay;
11) construction concrete bridge deck pavement layer pitch or concrete;
12) to construct attached structure, comprise anticollision barrier, shrinkage joint and drain hole.
Described step 9) in prestressed strand comprise long bundle and short bundle, the tension sequence of prestressed strand be first long bundle, shorter bundle, and left and right sides symmetry prestressed strand simultaneous tension on same steel girder, mud jacking is sequentially identical with tension sequence.
Compared with prior art, the present invention has the following advantages:
One, the rigidity of structure is large, and strengthen the prestressing force of hogging moment area, by special steel box structure, there is larger spatial placement prestressed strand the hogging moment area above bridge pier, produces more prestressing force, ensure that the firm of pontic.
Two, rational in infrastructure, given full play to the speciality of steel strand, steel, concrete material separately, Distribution of materials is reasonable, and utilization ratio is high; Be suitable for measuring body concrete material major part and be positioned at above bridge pier from great cost is low, and reduce span centre girder lower edge tensile stress, play continuous beam advantage.
Three, construction is simple, short construction period, and girder steel adopts factory process, and it is little that scene takies construction plant, is applicable to limited location, the construction plants such as Urban Bridge.
Four, be easy to maintenance, good endurance, the inner fill concrete of steel case, prevent the inner steel corrosion of case, exposing steel all can painting anticorrosion layer, and late maintaining is simple.
Accompanying drawing explanation
Fig. 1 is steel case Concrete Combination Continuous Beam bridge construction schematic diagram of the present invention.
Fig. 2 is steel case Concrete Combination Continuous Beam bridge A-A cross section structure schematic diagram of the present invention.
Fig. 3 is steel case Concrete Combination Continuous Beam bridge B-B cross section structure schematic diagram of the present invention.
Fig. 4 is steel case Concrete Combination Continuous Beam bridge C-C cross section structure schematic diagram of the present invention.
Wherein, 1, bridge pier, 2, across beam, 3, concrete bridge deck, 4, steel box structure, 11, bridge pier bearing pad, 21, steel web, 22, gooseneck, 23, steel sole plate, 41, steel case, 42, prestressed pore passage, 43, prestressed strand, 44, connect stirrup, 45, WELDING STUDS, 211, vertical stiffening rib, 212, longitudinal stiffener, 221, crossbeam connecting portion, 411, steel box plate, 412, steel case side plate.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment:
As shown in Figure 1, a kind of prestress steel case Concrete Combination Continuous Beam bridge structure, comprise bridge pier 1, girder 2 and concrete bridge deck 3, described bridge pier 1 is connected with girder 2 by bridge pier bearing pad 11, described girder 2 is arranged between adjacent bridge pier 1, be connected with adjacent girder 2 with steel bundle by concrete, described concrete bridge deck 3 is laid on girder 2, described girder 2 comprises many steel girders be arranged in parallel, the gooseneck 22 that described many parallel steel girders are arranged perpendicular to steel girder by many is interconnected, described gooseneck 22 spacing is 4-8m, described steel girder comprises steel box structure 4, steel web 21 and steel sole plate 23, described steel box structure 4 lower end is connected with bridge pier by bridge pier bearing pad 11, described steel box structure 4 lower end is connected with bridge pier 2 by bridge pier bearing pad 11, upper end is connected with concrete bridge deck 3.
The whole height of described steel girder is that secondary parabolic curve smoothly successively decreases to span centre above bridge pier 1, described steel girder bridge pier 1 height be across footpath 1/20 ~ 1/18, it is highly 1/30 ~ 1/50 across footpath when span centre, the cross section of described steel girder is I shape within the scope of 0.3 ~ 0.4 times about span centre, and the spacing between many described steel girders is 3.5-5m.
As shown in Figure 2, described steel box structure comprises steel case 41, prestressed pore passage 42, prestressed strand 43, connect stirrup 44, WELDING STUDS 45, described steel case 41 upper end open, inner fill concrete, be made up of steel box plate 411 and steel case side plate 412, described steel case side plate 412 thickness is 16-20cm, described steel box plate 411 is connected with steel web 21, described steel box plate 411 horizontal spacing is 35-60cm, steel sole plate 23 is provided with below described steel web 21, many prestressed pore passages 42 are provided with inside described steel case side plate 412, described prestressed pore passage 42 diameter is 8-12cm, it is inner that described prestressed strand 43 is arranged on prestressed pore passage 42, quantity is 3-12 bundle, described prestressed strand 43 is connected by prestressed anchor fixed end with steel sole plate 23, described prestressed strand 43 is set to 90 degree with the connection angle of steel sole plate 23, described steel case 41 inside is also provided with steel case longitudinal stiffener, the width of described steel case longitudinal stiffener is 4 ~ 6cm, thickness is 10mm, be spaced apart 10 ~ 15cm, described steel box top is provided with U-type groove, slotting position is corresponding with steel case longitudinal stiffener notch.
The depth of section of described steel case doubly smoothly successively decreases across footpath to 0.3-0.4 above bridge pier.
As shown in Figure 3, when described steel box structure is above bridge pier, following structure is adopted:
Steel case 41 is highly that pier back timber is high, described steel case 41 by concrete be connected stirrup 44 and be fixedly connected with concrete bridge deck 3, described concrete bridge deck 3 lays transverse reinforcement and longitudinal reinforcement forms steel mesh reinforcement, described connection stirrup 44 is arranged on steel case longitudinal stiffener fluting place, top is connected with the steel mesh reinforcement colligation of concrete bridge deck 3, diameter is 16 ~ 20cm, and described steel box plate 411 is directly connected with bridge pier bearing pad 11, and described steel box plate thickness is 16-20cm.
As shown in Figure 4, when described steel box structure is above span centre, following structure is adopted:
Steel web 21 is highly span centre deck-molding, described concrete bridge deck 3 is directly connected with steel web 21 by steel box plate 411, described steel box plate is fixedly connected with steel box plate 411 by WELDING STUDS 45, described steel box plate 411 thickness is 30-35cm, described WELDING STUDS 45 diameter is 18 ~ 22mm, be highly 15 ~ 30cm, interplanar spacing is 15 ~ 25cm.
Described gooseneck 22 is provided with crossbeam connecting portion 221, is connected between described gooseneck 22 by crossbeam connecting portion.
Described steel sole plate 23 width is 35-65cm, thickness is 30-50cm, described steel web 21 thickness is 20-30cm, and described steel web 21 is provided with vertical stiffening rib 211 and longitudinal stiffener 212, and described vertical stiffening rib 211 longitudinal pitch is 0.6 ~ 1.0 times of depth of beam, span centre 2/3 is arranged across footpath scope, steel plate width is 10 ~ 15cm, and thickness is 16 ~ 25mm, and described longitudinal stiffener 212 is arranged across footpath 3/4 scope span centre, width is 8 ~ 12cm, and thickness is 16 ~ 25mm.
On described bridge pier 1, square steel box structure 4 material is from great concrete and steel, and described span centre portion of material is little steel of conducting oneself with dignity.
A kind of prestress steel case Concrete Combination Continuous Beam bridge construction technique, comprises the following steps:
1) construction pier footing and bridge pier pier, and machined steel girder, basis is constructed identical with other bridge with pier, and steel girder can adopt factory process, or the pre-splicing rear scene of factory process sheet material completes follow-up welding and outside preservative treatment;
2) install the bridge pier bearing pad of pier coping portion, and hole-specifically set up steel girder, time larger across footpath, girder steel can adopt segmented longitudinal spliced erection on Temporary Piers;
3) carry out lateral connection between many steel girders, lateral connection is with bolts, and adopt jack local directed complete set position to make bolt hole corresponding after erection, after penetrating whole bolt, unification is executed stubborn;
4) longitudinal connection steel girder and bridge pier, longitudinally connects with bolts, and adopt jack local directed complete set position to make bolt hole corresponding after erection, after penetrating whole bolt, unification is executed stubborn;
5) to fluid concrete in hogging moment area steel case above bridge pier, existing highway bridge does not have the way of fill concrete in the steel case of hogging moment area, pouring concrete construction requires identical with other bridge, is poured into steel box top U-shaped opening lower edge 3 ~ 5cm At The Height and maintenance;
6) set up hogging moment area concrete bridge deck base plate above bridge pier, base plate is only as bridge deck concrete bed die;
7) to construct hogging moment area concrete bridge deck steel mesh reinforcement above bridge pier, hogging moment area bridge floor steel mesh reinforcement and the corresponding spot welding of steel box top U-type groove above bridge pier, while be connected stirrup colligation and connect;
8) the decking in the negative moment region concrete maintenance is poured into a mould;
9) hogging moment area prestressed strand anchoring above stretch-draw bridge pier, mud jacking, sets up support under bridge, prestressed strand comprises long bundle and short bundle, and tension sequence is long bundle first, shorter bundle, the simultaneous tension of same steel girder left and right sides symmetrical steel bundle, mud jacking order is identical with tension sequence;
10) construction span centre district prefabricated bridge base plate;
11) construction span centre some residual bridge floor steel mesh reinforcement, span centre district bridge floor steel mesh reinforcement is connected with the colligation of i iron back WELDING STUDS;
10) part concrete slab concrete in casting bay;
11) construction bridge deck pavement pitch or concrete;
12) to construct attached structure, comprise anticollision barrier, shrinkage joint and drain hole.
Claims (8)
1. a prestress steel case Concrete Combination Continuous Beam bridge structure, comprise bridge pier (1), girder (2) and concrete bridge deck (3), described bridge pier (1) is connected with girder (2) by bridge pier bearing pad (11), described girder (2) is arranged between adjacent bridge pier (1), be connected with adjacent girder (2) with steel bundle by concrete, described concrete bridge deck (3) is laid on girder (2), described girder (2) comprises many steel girders be arranged in parallel, described many parallel steel girders pass through many goosenecks (22) perpendicular to the setting of steel girder and are interconnected, it is characterized in that, described steel girder comprises steel box structure (4), steel web (21) and steel sole plate (23), described steel sole plate (23) is connected with steel box structure (4) by steel web (21), described steel box structure (4) lower end is connected with bridge pier (1) by bridge pier bearing pad (11), upper end is connected with concrete bridge deck (3), the whole height of described steel girder is that secondary parabolic curve smoothly successively decreases to span centre above bridge pier, described steel box structure (4) comprises steel case (41) and prestressed strand (43), described steel case (41) upper end open, inner fill concrete, be made up of steel box plate (411) and steel case side plate (412), described steel box plate (411) is connected with steel web (21), described steel case (41) inside is provided with many prestressed pore passages (42), it is inner that described prestressed strand (43) is arranged on prestressed pore passage (42), described prestressed strand (43) is connected with steel sole plate (23).
2. a kind of prestress steel case Concrete Combination Continuous Beam bridge structure according to claim 1, it is characterized in that, the whole height of described steel case (41) successively decreases to span centre above bridge pier.
3. a kind of prestress steel case Concrete Combination Continuous Beam bridge structure according to claim 2, is characterized in that, described steel box structure (4), when bridge pier (1) top, adopts following structure:
Described steel case (41) is highly that pier back timber is high, described steel case (41) by concrete be connected stirrup (44) and be fixedly connected with concrete bridge deck (3), described steel box plate (411) is directly connected with bridge pier bearing pad (11).
4. a kind of prestress steel case Concrete Combination Continuous Beam bridge structure according to claim 2, is characterized in that, when described steel box structure (4) is above span centre, adopt following structure:
Described steel web (21) is highly span centre deck-molding, described concrete bridge deck (3) is directly connected with steel web (21) by steel box plate (411), and described steel box plate (411) is fixedly connected with steel box plate (411) by WELDING STUDS (45).
5. a kind of prestress steel case Concrete Combination Continuous Beam bridge structure according to claim 1, it is characterized in that, described gooseneck (22) is provided with crossbeam connecting portion (221), is connected between many goosenecks (22) by crossbeam connecting portion (221).
6. a kind of prestress steel case Concrete Combination Continuous Beam bridge structure according to claim 1, it is characterized in that, described steel web (21) is provided with vertical stiffening rib (211) and longitudinal stiffener (212).
7. a construction technology for prestress steel case Concrete Combination Continuous Beam bridge structure as claimed in claim 3, is characterized in that, comprise the following steps:
1) construction pier footing and bridge pier pier, and machined steel girder;
2) bridge pier bearing pad of pier coping portion is installed, and hole-specifically sets up steel girder;
3) lateral connection between many steel girders is carried out;
4) longitudinally steel girder and bridge pier is connected;
5) to fluid concrete in hogging moment area steel case above bridge pier, steel box top opening lower edge 3 ~ 5cm At The Height is poured into and maintenance;
6) hogging moment area concrete bridge deck base plate above bridge pier is set up;
7) to construct hogging moment area concrete bridge deck steel mesh reinforcement above bridge pier, hogging moment area bridge floor steel mesh reinforcement and the corresponding spot welding of steel box top U-type groove above bridge pier, while be connected stirrup colligation and connect;
8) the decking in the negative moment region concrete maintenance is poured into a mould;
9) hogging moment area prestressed strand anchoring above stretch-draw bridge pier, mud jacking;
10) span centre district concrete bridge deck construction of bottom plates is carried out;
11) construction span centre some residual bridge floor steel mesh reinforcement, span centre district concrete bridge deck steel mesh reinforcement is connected by WELDING STUDS colligation with steel girder;
10) part concrete slab concrete in casting bay;
11) construction concrete bridge deck pavement layer pitch or concrete;
12) to construct attached structure, comprise anticollision barrier, shrinkage joint and drain hole.
8. the construction technology of a kind of prestress steel case Concrete Combination Continuous Beam bridge structure according to claim 7, it is characterized in that, described step 9) in prestressed strand comprise long bundle and short bundle, the tension sequence of prestressed strand is first long bundle, short bundle again, the symmetrical prestressed strand simultaneous tension of left and right sides on same steel girder, mud jacking order is identical with tension sequence.
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| CN201410468282.8A CN104264575B (en) | 2014-09-15 | 2014-09-15 | A kind of prestress steel case Concrete Combination Continuous Beam bridge structure and construction technology |
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| CN104790288B (en) * | 2015-04-07 | 2016-12-07 | 中铁大桥勘测设计院集团有限公司 | Steel construction-concrete slab combines the reinforcing bar reinforcement structure of bridge |
| CN104762871A (en) * | 2015-04-22 | 2015-07-08 | 武汉理工大学 | Prestressed concrete-steel tank beam bond beam continuous beam bridge |
| CN107841951B (en) * | 2017-09-28 | 2023-08-01 | 苏交科集团股份有限公司 | Preloading device for controlling pier top concrete cracks of steel-concrete composite girder bridge and construction method |
| CN108221636B (en) * | 2018-03-28 | 2023-05-02 | 北京市市政工程设计研究总院有限公司 | Steel-concrete composite beam bridge constructed by adopting bracket-free scheme for midspan and bridge forming method |
| CN108678438A (en) * | 2018-07-12 | 2018-10-19 | 中铁四院集团西南勘察设计有限公司 | Overhead station |
| CN109722988A (en) * | 2019-02-25 | 2019-05-07 | 北京市市政工程设计研究总院有限公司 | A kind of shearing resistance bridge floor continuous structure and construction method |
| CN112482187A (en) * | 2020-11-03 | 2021-03-12 | 中铁大桥勘测设计院集团有限公司 | Butt-joint prefabricated combination beam and construction method |
| CN114214924A (en) * | 2021-12-21 | 2022-03-22 | 中国三冶集团有限公司 | Large-span I-shaped steel concrete composite beam |
| CN115233529A (en) * | 2022-09-23 | 2022-10-25 | 湖南省交通规划勘察设计院有限公司 | Medium-span steel-concrete composite beam, construction method and medium-span bridge |
| CN116024907B (en) * | 2023-01-10 | 2023-11-14 | 中交第四航务工程勘察设计院有限公司 | Port steel-concrete composite beam for improving crack resistance of bridge deck and construction method thereof |
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| CN101892625A (en) * | 2010-07-23 | 2010-11-24 | 同济大学 | Wind fin plate for improving pneumatic performance of bridge |
| KR101270733B1 (en) * | 2011-02-15 | 2013-06-03 | 재원 양 | Prestressed Concrete Box Girder Integrated with Steel Deck and Constructing Method of Bridge using Such Girder |
| CN202323669U (en) * | 2011-11-04 | 2012-07-11 | 湖南大学 | Prestressed ultrahigh-performance concrete continuous box girder bridge |
| CN102352597B (en) * | 2011-11-04 | 2013-07-24 | 湖南大学 | Prestressed ultrahigh-performance concrete continuous box girder bridge and construction method thereof |
| CN203411887U (en) * | 2013-07-22 | 2014-01-29 | 同济大学 | Wave steel web composite beam structure |
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