CN104831627A - Bridge deck slab longitudinal unequal strength steel-concrete composite structure bridge and construction method thereof - Google Patents
Bridge deck slab longitudinal unequal strength steel-concrete composite structure bridge and construction method thereof Download PDFInfo
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- CN104831627A CN104831627A CN201510083643.1A CN201510083643A CN104831627A CN 104831627 A CN104831627 A CN 104831627A CN 201510083643 A CN201510083643 A CN 201510083643A CN 104831627 A CN104831627 A CN 104831627A
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Abstract
The invention relates to a bridge deck slab longitudinal unequal strength steel-concrete composite structure bridge and a construction method thereof and belongs to a novel bridge structural system applied to a continuous composite girder bridge or a composite rigid frame bridge. The bridge deck slab longitudinal unequal strength steel-concrete composite structure bridge of the invention is composed of super-high-performance concrete, ordinary concrete and steel beams. According to the ridge deck slab longitudinal unequal strength steel-concrete composite structure bridge of the invention, shear-resisting connection components and upper concrete plates are connected with each other so as to form an integrated body and work jointly, and therefore, the strength and rigidity of the bridge can be improved, and the quantity of steel consumption of the whole bridge can be decreased. The bridge deck slab longitudinal unequal strength steel-concrete composite structure bridge of the invention has respective advantages of an ordinary composite bridge deck system and super-high-performance concrete, and the advantages of high strength, high rigidity, excellent anti-cracking performance, high durability, easiness in construction and the like, and has a broad application prospect in composite structure bridges on which negative moment regions exist, such as a continuous girder bridge and a rigid frame bridge.
Description
Technical field
The present invention relates to a kind of novel bridge form of structure being applied to continuous composite beam bridge or combined rigid structure bridge, belong to technical field of bridge engineering.
Background technology
When bridge span is larger, the moment of flexure peak value under adopting continuous girder bridge or rigid frame bridge scheme significantly can reduce vertical uniform load q, reduces the material usage of bridge, improves comprehensive economy.For continuous composite beam bridge or combined rigid structure bridge, the compound beam at intermediate support or pier stud place is in hogging moment area, and top concrete slab is in tension state, thus there is higher cracking risk.And the compound beam not only rigidity reduction after concrete slab cracking, and Long-Term Properties and endurance issues are also very outstanding.For improving the cracking resistance of continuous composite beam bridge or combined rigid structure bridge hogging moment area concrete slab, at present in design and construction, develop multiple hogging moment area Crack Resistance, building order, apply longitudinal prestressing, adopt resistance to plucking not shear connector etc. as adjustment bridge deck concrete plate.
Ultra-high performance concrete is made up of RPC and steel fibre, is a kind of cement-base composite material with superhigh intensity, superhigh tenacity and high-durability.Ultra-high performance concrete is laid in hogging moment area, effectively can improve the cracking resistance of bridge hogging moment area concrete slab, improve the stress performance of hogging moment area bridge deck, improve integral bridge rigidity and Long-Term Properties thereof and endurance quality, thus the combination advantage between Steel concrete can be given full play to.
Summary of the invention
The object of the present invention is to provide that a kind of reasonable stress, cracking resistance are good, durability is high, the bridge deck of the easy construction longitudinally strong composite bridge system such as not, by fully utilizing the features of steel, ordinary concrete and ultra-high performance concrete, thus obtain desirable stress performance, workability and comprehensive economic index.
A kind of bridge deck of the present invention longitudinally strong steel-concrete combined structure bridge such as not, be made up of ultra-high performance concrete, ordinary concrete and girder steel, it is characterized in that: be ultra-high performance concrete bridge deck in bridge hogging moment area, is ordinary concrete bridge deck in bridge positive bending moment district; Described girder steel comprises top flange, web plate and back plate.
Shear connector is welded in described girder steel top flange.
Reinforcing bar is laid in the ordinary concrete in the ultra-high performance concrete in described hogging moment area and/or positive bending moment district.
Steel fibre is laid in described ultra-high performance concrete.
The construction method of the longitudinal strong steel-concrete combined structure bridge such as or not a kind of bridge deck of the present invention, it is characterized in that, the method comprises the following steps:
(1) bridge floor steel work is installed;
(2) on girder steel top flange, shear connector is welded;
(3) ultra-high performance concrete is built in bridge floor hogging moment area;
(4) ordinary concrete is built in bridge floor positive bending moment district.
1
Described bridge floor steel work adopts i iron cross section girder or box-type section girder.
Described step (3) and/or step (4) front, configuration steel bar stress and distributing bar.
The steel fibre of configuration some in described ultra-high performance concrete.
The present invention has following outstanding advantage relative to prior art: 1. lay ultra-high performance concrete in bridge floor hogging moment area, effectively can improve the cracking resistance of the decking in the negative moment region under various load case effect, solve a hogging moment area crack-resisting design difficult problem for puzzlement composite bridge system development, improve Long-Term Properties and the endurance quality of bridge construction; 2. can give full play to the compound action between hogging moment area concrete slab and girder steel, utilize shear connector that girder steel and concrete slab are connected to form entirety, effectively improve the strength and stiffness of bridge deck, reduce the steel using amount of bridge deck; 3. only adopt ultra-high performance concrete in negative moment area local, overall cost is lower, and economic performance is better.
Accompanying drawing explanation
Fig. 1 is that in steel-concrete continuous girder bridge, compound beam zones of different adopts dissimilar concrete schematic diagram.
Fig. 2 is that in steel-concrete rigid frame bridge, compound beam zones of different adopts dissimilar concrete schematic diagram.
Fig. 3 is that hogging moment area adopts shear connector to connect the cross-sectional drawing of girder steel and ultra-high performance concrete.
Fig. 4 is that positive bending moment district adopts shear connector to connect the cross-sectional drawing of girder steel and ordinary concrete.
In figure: 1-ultra-high performance concrete; 2-ordinary concrete; 3-girder steel top flange; 4-steel beam web plate; 5-girder steel base plate; 6-peg shear connector; 7-reinforcing bar; 8-rigid frame bridge pier stud.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
The bridge deck provided by the present invention longitudinally strong composite bridge such as not, comprises ultra-high performance concrete 1, ordinary concrete 2 and girder steel (by top flange 3, web 4 and base plate 5), as depicted in figs. 1 and 2.
For ensureing that girder steel and concrete slab form compound action, can weld the connector with shearing resistance and uplift effect above girder steel top flange 3, connector can adopt peg 6, as shown in Figure 3.
Also can according to requirement of engineering, steel bar stress and the distributing bar 7 of some is configured in ultra-high performance concrete 1 and ordinary concrete 2, as shown in Figure 3 and Figure 4, in ultra-high performance concrete 1, configure the steel fibre (not shown) of some.
Working procedure of the present invention is:
(1) bridge floor steel work (can adopt i iron cross section girder or box-type section girder) is installed;
(2) on girder steel top flange 3, shear connector 6 is welded;
(3) ultra-high performance concrete 1 is built in bridge floor hogging moment area;
(4) ordinary concrete 2 is built in bridge floor positive bending moment district.
According to requirement of engineering, also can build ultra-high performance concrete 1 in bridge floor hogging moment area and/or before bridge floor positive bending moment district builds ordinary concrete 2, lay steel bar stress and distributing bar 7.
According to requirement of engineering, the steel fibre of some also can be configured in ultra-high performance concrete.
Claims (8)
1. the bridge deck longitudinally strong steel-concrete combined structure bridge such as not, be made up of ultra-high performance concrete, ordinary concrete and girder steel, it is characterized in that: be ultra-high performance concrete bridge deck in bridge hogging moment area, is ordinary concrete bridge deck in bridge positive bending moment district; Described girder steel comprises top flange, web plate and back plate.
2., according to the bridge deck according to claim 1 longitudinally strong composite bridge such as not, it is characterized in that: on girder steel top flange, weld shear connector.
3., according to the bridge deck according to claim 1 longitudinally strong composite bridge such as not, it is characterized in that: in the ordinary concrete in the ultra-high performance concrete in hogging moment area and/or positive bending moment district, lay reinforcing bar.
4., according to the bridge deck according to claim 1 longitudinally strong composite bridge such as not, it is characterized in that: in described ultra-high performance concrete, lay steel fibre.
5. the construction method of described composite bridge as claimed in one of claims 1-4, it is characterized in that, the method comprises the following steps:
(1) bridge floor steel work is installed;
(2) on girder steel top flange, shear connector is welded;
(3) ultra-high performance concrete is built in bridge floor hogging moment area;
(4) ordinary concrete is built in bridge floor positive bending moment district.
6. construction method according to claim 5, is characterized in that, described bridge floor steel work adopts i iron cross section girder or box-type section girder.
7. construction method according to claim 6, is characterized in that, described step (3) and/or step (4) front, configuration steel bar stress and distributing bar.
8. construction method according to claim 7, is characterized in that, the steel fibre of configuration some in described ultra-high performance concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510083643.1A CN104831627A (en) | 2015-02-16 | 2015-02-16 | Bridge deck slab longitudinal unequal strength steel-concrete composite structure bridge and construction method thereof |
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| CN201510083643.1A CN104831627A (en) | 2015-02-16 | 2015-02-16 | Bridge deck slab longitudinal unequal strength steel-concrete composite structure bridge and construction method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178165A (en) * | 2015-10-09 | 2015-12-23 | 西藏自治区交通勘察设计研究院 | Tension face layer compound-reinforced reinforced concrete continuous rigid frame bridge and construction method thereof |
| CN105926440A (en) * | 2016-05-09 | 2016-09-07 | 湖南城市学院 | Steel-concrete combined continuous beam bridge deck as well as manufacturing method and application thereof |
| CN106958197A (en) * | 2017-02-24 | 2017-07-18 | 南京航空航天大学 | Composite bridge and its construction method that floorings longitudinal elasticity is not waited |
| CN108221704A (en) * | 2018-03-21 | 2018-06-29 | 西安公路研究院 | A kind of bridge four beam type I-shaped steel-concrete composite beams and construction method |
| CN108385503A (en) * | 2018-01-19 | 2018-08-10 | 湖南大学 | A kind of assembled light combination beam freely-supported structure changes continuous structure and its construction method |
| CN108978434A (en) * | 2018-10-16 | 2018-12-11 | 河南省交通规划设计研究院股份有限公司 | A kind of Novel steel-is mixed to be combined Continuous Box Girder Bridge and its industrializes construction method without bracket |
| CN110241724A (en) * | 2019-05-29 | 2019-09-17 | 中交第二公路勘察设计研究院有限公司 | A kind of hogging moment area UHPC processing steel-mixes composite structure and preparation method |
| CN110656565A (en) * | 2019-09-23 | 2020-01-07 | 中铁二局第三工程有限公司 | Large-span combined box girder and construction method thereof |
| CN111139740A (en) * | 2020-01-16 | 2020-05-12 | 清华大学 | Structure and method for improving cracking resistance of hogging moment area of steel-concrete composite beam bridge |
| CN112012091A (en) * | 2020-09-01 | 2020-12-01 | 湖南大学 | UHPC-NC mixed box girder, large-span rigid frame bridge and construction method thereof |
| CN112376386A (en) * | 2020-10-30 | 2021-02-19 | 东南大学 | Steel-concrete combined continuous beam and connecting piece and construction method of hogging moment area of steel-concrete combined continuous beam |
| CN114753248A (en) * | 2022-04-07 | 2022-07-15 | 中铁大桥局集团有限公司 | Construction method of bridge deck, bridge deck and bridge |
| CN115679839A (en) * | 2022-12-30 | 2023-02-03 | 湖南省交通规划勘察设计院有限公司 | Bridge with continuous simply-supported bridge deck, reinforcement and construction method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178165A (en) * | 2015-10-09 | 2015-12-23 | 西藏自治区交通勘察设计研究院 | Tension face layer compound-reinforced reinforced concrete continuous rigid frame bridge and construction method thereof |
| CN105926440A (en) * | 2016-05-09 | 2016-09-07 | 湖南城市学院 | Steel-concrete combined continuous beam bridge deck as well as manufacturing method and application thereof |
| CN106958197A (en) * | 2017-02-24 | 2017-07-18 | 南京航空航天大学 | Composite bridge and its construction method that floorings longitudinal elasticity is not waited |
| CN108385503A (en) * | 2018-01-19 | 2018-08-10 | 湖南大学 | A kind of assembled light combination beam freely-supported structure changes continuous structure and its construction method |
| CN108221704A (en) * | 2018-03-21 | 2018-06-29 | 西安公路研究院 | A kind of bridge four beam type I-shaped steel-concrete composite beams and construction method |
| CN108978434B (en) * | 2018-10-16 | 2024-02-20 | 河南省交通规划设计研究院股份有限公司 | Bracket-free industrialized construction method of steel-concrete combined continuous box girder bridge |
| CN108978434A (en) * | 2018-10-16 | 2018-12-11 | 河南省交通规划设计研究院股份有限公司 | A kind of Novel steel-is mixed to be combined Continuous Box Girder Bridge and its industrializes construction method without bracket |
| CN110241724A (en) * | 2019-05-29 | 2019-09-17 | 中交第二公路勘察设计研究院有限公司 | A kind of hogging moment area UHPC processing steel-mixes composite structure and preparation method |
| CN110656565A (en) * | 2019-09-23 | 2020-01-07 | 中铁二局第三工程有限公司 | Large-span combined box girder and construction method thereof |
| CN111139740A (en) * | 2020-01-16 | 2020-05-12 | 清华大学 | Structure and method for improving cracking resistance of hogging moment area of steel-concrete composite beam bridge |
| CN112012091A (en) * | 2020-09-01 | 2020-12-01 | 湖南大学 | UHPC-NC mixed box girder, large-span rigid frame bridge and construction method thereof |
| CN112376386A (en) * | 2020-10-30 | 2021-02-19 | 东南大学 | Steel-concrete combined continuous beam and connecting piece and construction method of hogging moment area of steel-concrete combined continuous beam |
| CN114753248A (en) * | 2022-04-07 | 2022-07-15 | 中铁大桥局集团有限公司 | Construction method of bridge deck, bridge deck and bridge |
| CN115679839A (en) * | 2022-12-30 | 2023-02-03 | 湖南省交通规划勘察设计院有限公司 | Bridge with continuous simply-supported bridge deck, reinforcement and construction method |
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Application publication date: 20150812 |