CN104947588A - Steel pipe concrete-combination beam cable stayed bridge floor system and construction method thereof - Google Patents
Steel pipe concrete-combination beam cable stayed bridge floor system and construction method thereof Download PDFInfo
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- CN104947588A CN104947588A CN201510391792.4A CN201510391792A CN104947588A CN 104947588 A CN104947588 A CN 104947588A CN 201510391792 A CN201510391792 A CN 201510391792A CN 104947588 A CN104947588 A CN 104947588A
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Abstract
The invention relates to a steel pipe concrete-combination beam cable stayed bridge floor system and a construction method thereof; the bridge floor system comprises steel pipe concrete longitudinal beams and transverse combination beams, and a bridge floor structure formed by fixing the concrete bridge floor steel pipe concrete longitudinal beams and transverse combination beams; concrete is poured in the steel pipe concrete longitudinal beams; the transverse combination beams is welded with shear connectors so as to form a whole body with the concrete bridge floor. The steel pipe concrete-combination beam cable stayed bridge floor system is reasonable in bearing, high in material utilization rate, convenient in construction, combines advantages of steel pipe concrete and steel-concrete combination beam technology, so the cable stayed bridge floor system can fully express combination functions in both a longitudinal bridge direction and a cross bridge direction with very high bearing efficiency, thus obtaining better bearing performance, construction performance, long-term performance and integration economy indexes.
Description
Technical field
The present invention relates to one and be applied to long-span cablestayed bridges combining structure bridge floor, belong to technical field of bridge engineering.
Background technology
Long-span cablestayed bridges bridge floor bears huge axial force, and girder form conventional at present mainly comprises concrete beam, steel box-girder, steel truss girder, duplexing word steel combination beam etc.Engineering practice shows, steel work bridge deck exists complex structure, and bridge floor rigidity is lower and bear axially huge axle power, there is the problems such as materials application is unreasonable, long construction period.And conventional combination bridge deck mainly relies on longitudinal combination joist support by axial force, compound beam can not give full play to by the advantage that curved ability is strong, and causes the efficiency of longitudinal stress to be greatly affected due to concrete shrinkage and creep.Concrete filled steel tube longeron and transverse combination beam are formed bridge deck structure, the advantage that concrete filled steel tube axial compression resistance performance is good and Beams anti-bending strength is good can be given full play to, be applicable to cable-stayed bridge main-beam longitudinally bend, laterally by curved force modes, effectively can reduce dead load, promote material use efficiency.The form of construction work that concrete filled steel tube longeron and combination crossbeam all can adopt prefabrication, on-site consolidation or part cast-in-place, meets the development trend of industrialization of construction industry.Meanwhile, this bridge deck has less wind surface and higher lateral stiffness, torsional rigidity, can promote integral bridge wind resistance.
Summary of the invention
The object of the present invention is to provide that a kind of reasonable stress, stock utilization are high, new composite structure bridge floor easily of constructing, can the advantage of comprehensively concrete filled steel tube and steel-concrete composite beam technology, make Cable-stayed Bridges tie up to vertical bridge to can giving full play to compound action with direction across bridge and having high by force efficiency, thus obtain better stress performance, workability, long-term behaviour and comprehensive economic index.
Technical scheme of the present invention is as follows:
A kind of concrete filled steel tube-compound beam Cable-stayed Bridges system, it is characterized in that, this deck system comprises the affixed formation bridge deck structure of concrete filled steel tube longeron, transverse combination beam, concrete slab concrete filled steel tube longeron and transverse combination beam, concreting in concrete filled steel tube longeron, described transverse combination beam is welded with shear connector, forms entirety with concrete slab.
Be provided with three concrete filled steel tube longerons under described bridge deck structure, its two limb is affixed with concrete filled steel tube longeron respectively, forms the longitudinal main beam structure of space truss.
Described transverse combination beam is i section steel beam or steel beam with box shape.
Described concrete slab adopts precast plate or superimposed sheet technology to form concrete slab.
Be welded with a taper lined steel pipe in one end of described concrete filled steel tube longeron, the length that described taper lined steel pipe stretches out concrete filled steel tube longeron meets steel pipe build-in and passes curved requirement.
The construction method of a kind of concrete filled steel tube of the present invention-compound beam Cable-stayed Bridges system, it is characterized in that, this construction method comprises the following steps:
1) factory builds concrete filled steel tube longeron in advance;
2) on-site hoisting splicing steel tube concrete beam and transverse combination beam;
3) on the top board of bridge floor transverse combination beam, shear connector is welded;
4) superimposed sheet or precast plate ride on transverse combination beam, lay beard muscle and shearing resistance distributing bar, are formed after concreting
Concrete slab;
Described transverse combination beam is i section steel beam or steel beam with box shape.
This construction method is further comprising the steps of:
In step 1) in one end of concrete filled steel tube longeron (1) weld one section of taper lined steel pipe, under the vertical state of steel pipe, build pipe inner concrete, ensure two ends concordant and outside steel pipe pre-set groove;
In step 2) job site splices after concrete filled steel tube longeron (1) two segment centering, outer steel pipe is connected by butt weld, pour into high-strength mortar or high-strength grout from grouting mouth afterwards, will to be in the milk mouth and grout outlet sealing after grout outlet has mortar to overflow.
The present invention has the following advantages relative to prior art and high-lighting effect: the 1. advantage of comprehensive concrete filled steel tube and steel-concrete composite beam technology, and reasonable stress, stock utilization be high, it is convenient to construct.2. concrete filled steel tube axial rigidity is large, supporting capacity is high, can bear vertical bridge to huge axle power and moment of flexure, reduces coagulate layer thickness, alleviates dead load.3. horizontal steel-concrete composite beam plate bears positive bending moment, makes full use of combined effect, improves material use efficiency.4. concrete filled steel tube longeron and the combination crossbeam form of construction work that prefabrication, on-site consolidation or part all can be adopted cast-in-place, meet the development trend of industrialization of construction industry.5. deck system wind surface is less, and lateral stiffness, torsional rigidity are higher, and overall wind resistance is good
Accompanying drawing explanation
Fig. 1 is the bridge deck schematic perspective view that the present invention adopts superimposed sheet concrete slab technology.
Fig. 2 is the bridge deck schematic perspective view that the present invention adopts precast concrete plate technique.
Fig. 3 is the schematic perspective view adopting three-limb steel pipe to form space truss bridge deck structure.
Fig. 4 be concrete filled steel tube longeron of the present invention one end in welding taper lined steel pipe schematic diagram.
In figure: 1-concrete filled steel tube; 2-transverse combination beam; 3-concrete slab; 4-peg shear connector; Arrangement of reinforcement in 5-concrete slab; 6-superimposed sheet; 7-beard muscle; 8-shearing resistance distributing bar; 9-precast plate; 10-wets seam; 11-suspension cable; 12-steel pipe chord member; 2-1-taper lined steel pipe; 3-1-pre-concreting; 4-1-high-strength mortar or high-strength grout; 5-1-grouting mouth; 6-1-grout outlet; 7-1-butt weld.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
Prefabricated concrete-filled steel tube provided by the present invention-compound beam deck system, as shown in Figure 1 and Figure 2, bridge floor steel work forms bridge deck structure by concrete filled steel tube longeron 1 and transverse combination beam 2, and transverse combination beam 2 comprises i section steel beam or steel beam with box shape.Concreting in steel pipe, job site sections splices, and transverse combination beam welds shear connector 4, forms entirety, jointly resist load action with concrete slab 3.Require higher cable stayed bridge (as multitower bridge) for bending rigidity, three concrete filled steel tubes can be used as longitudinal girder, and as shown in Figure 3, welded steel pipe chord member 12 forms space truss, forms bridge deck structure with transverse combination beam 2.Can also be welded with a taper lined steel pipe in one end of concrete filled steel tube longeron 1, the length that described taper lined steel pipe stretches out concrete filled steel tube longeron 1 as shown in Figure 4 meets steel pipe build-in and passes curved requirement.Adopt taper lined steel pipe connecting structure stress performance good, power transmission is reliable; There is space between sections, can do and necessarily regulate to correct structure misalignment of axe in scene.
Construction method of the present invention, comprises the following steps:
1) factory builds concrete filled steel tube longeron in advance;
2) on-site hoisting splicing steel tube concrete beam and transverse combination beam, transverse combination beam adopts i section steel beam or steel beam with box shape;
3) on the top board of bridge floor transverse combination beam, shear connector is welded;
4) superimposed sheet or precast plate ride on transverse combination beam, lay beard muscle and shearing resistance distributing bar, are formed after concreting
Concrete slab;
This construction method is further comprising the steps of:
In step 1) in one end of concrete filled steel tube longeron (1) weld one section of taper lined steel pipe, under the vertical state of steel pipe, build pipe inner concrete, ensure two ends concordant and outside steel pipe pre-set groove;
In step 2) job site splices after concrete filled steel tube longeron (1) two segment centering, outer steel pipe is connected by butt weld, pour into high-strength mortar or high-strength grout from grouting mouth afterwards, will to be in the milk mouth and grout outlet sealing after grout outlet has mortar to overflow.
Claims (7)
1. concrete filled steel tube-compound beam Cable-stayed Bridges system, it is characterized in that, this deck system comprises concrete filled steel tube longeron (1), transverse combination beam (2), concrete slab (3) concrete filled steel tube longeron (1) and the affixed formation bridge deck structure of transverse combination beam (2), concreting in concrete filled steel tube longeron, described transverse combination beam (2) is welded with shear connector (4), forms entirety with concrete slab (3).
2. according to concrete filled steel tube according to claim 1-compound beam Cable-stayed Bridges system, it is characterized in that, under described bridge deck structure, be provided with three concrete filled steel tube longerons, its two limb is affixed with concrete filled steel tube longeron (1) respectively, forms the longitudinal main beam structure of space truss.
3. according to the concrete filled steel tube described in claim 1 or 2-compound beam Cable-stayed Bridges system, it is characterized in that, described transverse combination beam (2) is i section steel beam or steel beam with box shape.
4. according to the concrete filled steel tube described in claim 1 or 2-compound beam Cable-stayed Bridges system, it is characterized in that, described concrete slab (3) adopts precast plate or superimposed sheet technology to form concrete slab (3).
5. according to the concrete filled steel tube described in claim 1 or 2-compound beam Cable-stayed Bridges system, it is characterized in that, be welded with a taper lined steel pipe in one end of described concrete filled steel tube longeron (1), the length that described taper lined steel pipe stretches out concrete filled steel tube longeron (1) meets steel pipe build-in and passes curved requirement.
6. a construction method for concrete filled steel tube-compound beam Cable-stayed Bridges system, it is characterized in that, this construction method comprises the following steps:
1) factory builds concrete filled steel tube longeron (1) in advance;
2) on-site hoisting splicing steel tube concrete beam (1) and transverse combination beam (2);
3) on the top board of bridge floor transverse combination beam (2), shear connector (4) is welded;
4) superimposed sheet (6) or precast plate (9) ride on transverse combination beam (2), lay beard muscle (7) and shearing resistance distributing bar (8), after concreting, form concrete slab (3);
Described transverse combination beam (2) is i section steel beam or steel beam with box shape.
7. according to construction method according to claim 6, it is characterized in that, this construction method is further comprising the steps of:
In step 1) in one end of concrete filled steel tube longeron (1) weld one section of taper lined steel pipe, under the vertical state of steel pipe, build pipe inner concrete, ensure two ends concordant and outside steel pipe pre-set groove;
In step 2) job site splices after concrete filled steel tube longeron (1) two segment centering, outer steel pipe is connected by butt weld, pour into high-strength mortar or high-strength grout from grouting mouth afterwards, will to be in the milk mouth and grout outlet sealing after grout outlet has mortar to overflow.
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| CN201510391792.4A CN104947588B (en) | 2015-07-06 | 2015-07-06 | Concrete filled steel tube-combination beam Cable-stayed Bridges system and construction method thereof |
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| CN201510391792.4A CN104947588B (en) | 2015-07-06 | 2015-07-06 | Concrete filled steel tube-combination beam Cable-stayed Bridges system and construction method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401516A (en) * | 2015-12-18 | 2016-03-16 | 江苏兆通工程技术有限公司 | Bridge adopting fiber reinforced concrete and bridge top plate construction technology |
| CN105887649A (en) * | 2016-04-21 | 2016-08-24 | 浙江交通职业技术学院 | Steel-concrete local prefabricated simply supported superposed beam structure adopting layering stud connector and manufacturing technique thereof |
| CN106677062A (en) * | 2016-12-29 | 2017-05-17 | 中铁第四勘察设计院集团有限公司 | Orthotropic bridge deck system structure with double girders and dense cross beams |
| CN108049301A (en) * | 2018-01-25 | 2018-05-18 | 中铁第勘察设计院集团有限公司 | The combining structure overpass of Midspan sag |
| CN109736201A (en) * | 2019-01-18 | 2019-05-10 | 中铁第四勘察设计院集团有限公司 | Steel-is combined to mix bondbeam and bridge and construction method after wet seam built in one kind |
| CN110539398A (en) * | 2019-09-27 | 2019-12-06 | 浙江省交通规划设计研究院有限公司 | Construction method of prefabricated bridge deck steel-concrete composite beam |
| CN110552372A (en) * | 2019-09-12 | 2019-12-10 | 国网福建省电力有限公司经济技术研究院 | Superposed cable working well top plate structure and construction method thereof |
| CN114277662A (en) * | 2021-12-28 | 2022-04-05 | 山东省公路桥梁建设集团有限公司 | Steel-concrete composite beam cable-stayed bridge |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401516A (en) * | 2015-12-18 | 2016-03-16 | 江苏兆通工程技术有限公司 | Bridge adopting fiber reinforced concrete and bridge top plate construction technology |
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| CN105887649A (en) * | 2016-04-21 | 2016-08-24 | 浙江交通职业技术学院 | Steel-concrete local prefabricated simply supported superposed beam structure adopting layering stud connector and manufacturing technique thereof |
| CN106677062A (en) * | 2016-12-29 | 2017-05-17 | 中铁第四勘察设计院集团有限公司 | Orthotropic bridge deck system structure with double girders and dense cross beams |
| CN106677062B (en) * | 2016-12-29 | 2018-12-14 | 中铁第四勘察设计院集团有限公司 | A kind of close crossbeam orthotropic deck architecture of double girders |
| CN108049301A (en) * | 2018-01-25 | 2018-05-18 | 中铁第勘察设计院集团有限公司 | The combining structure overpass of Midspan sag |
| CN109736201A (en) * | 2019-01-18 | 2019-05-10 | 中铁第四勘察设计院集团有限公司 | Steel-is combined to mix bondbeam and bridge and construction method after wet seam built in one kind |
| CN110552372A (en) * | 2019-09-12 | 2019-12-10 | 国网福建省电力有限公司经济技术研究院 | Superposed cable working well top plate structure and construction method thereof |
| CN110539398A (en) * | 2019-09-27 | 2019-12-06 | 浙江省交通规划设计研究院有限公司 | Construction method of prefabricated bridge deck steel-concrete composite beam |
| CN114277662A (en) * | 2021-12-28 | 2022-04-05 | 山东省公路桥梁建设集团有限公司 | Steel-concrete composite beam cable-stayed bridge |
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| CN104947588B (en) | 2016-09-21 |
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