CN102561175A - Combined box girder - Google Patents
Combined box girder Download PDFInfo
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- CN102561175A CN102561175A CN2012100126617A CN201210012661A CN102561175A CN 102561175 A CN102561175 A CN 102561175A CN 2012100126617 A CN2012100126617 A CN 2012100126617A CN 201210012661 A CN201210012661 A CN 201210012661A CN 102561175 A CN102561175 A CN 102561175A
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- concrete
- superhigh tenacity
- combined box
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- steel case
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Abstract
The invention discloses a combined box girder, which comprises a steel box girder and an ultrahigh-ductility concrete layer, wherein the ultrahigh-ductility concrete layer is arranged above the steel box girder and is bonded with the steel box girder. By adopting the technical scheme, the bonding between the ultrahigh-ductility concrete layer and the steel box girder is reliable, the expansion coefficients are the same, the problem that the deck of a steel pavement structure is apt to be fatigued and cracked can be effectively solved, the rigidity of the combined box girder is improved, the durability is increased and the antifatigue performance is better.
Description
Technical field
The present invention relates to the bridge construction technical field, relate in particular to a kind of combined box beam.
Background technology
At present, steel bridge is built more and more, the general asphalt concrete pavement that adopts on the steel bridge bridge floor.But adopt bituminous concrete not only to cost an arm and a leg, and bituminous concrete is different with the coefficient of expansion of steel plate, it is not firm to cause boning between bituminous concrete and the steel plate, causes diseases such as fatigue cracking easily.
Summary of the invention
The objective of the invention is to propose a kind of combined box beam, can effectively solve problems such as the not firm and easy of crack of general steel case beam and bridge deck pavement bonding.
For reaching this purpose, the present invention adopts following technical scheme:
A kind of combined box beam comprises steel case beam and superhigh tenacity layer of concrete, and the superhigh tenacity layer of concrete is positioned on the steel case beam, bonds between superhigh tenacity layer of concrete and the steel case beam.
The superhigh tenacity mix proportion is cement 21% to 45%, silicon ash 5% to 15%, flyash 0 to 15%, quartz sand 33% to 58%, quartz powder 5% to 15%, water-cement ratio 0.16 to 0.24, steel fibre 4% to 10%, nano-silicon 3% to 8% and high efficiency water reducing agent 0.8% to 1.5% in the superhigh tenacity layer of concrete.
Is furnished with reinforcing bar in the superhigh tenacity layer of concrete.
Adopt structural adhesive and quartz sand to form the exasperate bonding between superhigh tenacity layer of concrete and the steel case beam.
Adopt shearing resistance peg bonding between superhigh tenacity layer of concrete and the steel case beam.
The superhigh tenacity coagulate layer thickness is 5 centimetres.
The superhigh tenacity layer of concrete adopts hot and humid maintenance.
Superhigh tenacity layer of concrete between the adjacent combined box beam adopts the cast in situs maintenance to connect.
Adopted technical scheme of the present invention, bonding is reliable between superhigh tenacity layer of concrete and the steel case beam, and the coefficient of expansion is identical; Can effectively solve the steel bridge face structure layer easy fatigue cracking problem of mating formation; And improved the rigidity of combined box beam, and having increased durability, anti-fatigue performance is better.
Description of drawings
Fig. 1 is the structural representation of combined box beam in the specific embodiment of the invention.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with accompanying drawing and through the specific embodiment.
Fig. 1 is the structural representation of combined box beam in the specific embodiment of the invention.As shown in Figure 1, this combined box beam comprises steel case beam 1 and superhigh tenacity layer of concrete 2, and the superhigh tenacity coagulate layer thickness is 5 centimetres, and the centre is furnished with reinforcing bar, and the superhigh tenacity layer of concrete is positioned on the steel case beam, bonds between superhigh tenacity layer of concrete and the steel case beam.
Wherein superhigh tenacity concrete STC is a kind of novel high-strength high tenacity material in the superhigh tenacity layer of concrete, and compressive strength is 110 to 160MPa, and rupture strength is up to 20 to 50MPa, far above general concrete.Its match ratio is cement 21% to 45%, silicon ash 5% to 15%, flyash 0 to 15%, quartz sand 33% to 58%, quartz powder 5% to 15%, water-cement ratio 0.16 to 0.24, steel fibre 4% to 10%, nano-silicon 3% to 8% and high efficiency water reducing agent 0.8% to 1.5%; This proportioning is through mixing nano-silicon and strengthening the rupture strength that the special steel fibers content has improved superhigh tenacity concrete STC greatly; Cracking resistance is excellent, meets the needs of this kind combined box beam.
Adopt structural adhesive and quartz sand to form the exasperate bonding between superhigh tenacity layer of concrete and the steel case beam, perhaps adopt shearing resistance construction measure and combination bondings thereof such as shearing resistance peg.
The superhigh tenacity layer of concrete need adopt hot and humid maintenance, and the superhigh tenacity layer of concrete between the adjacent combined box beam then need adopt the cast in situs maintenance to connect.
The above; Be merely the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with this technological people in the technical scope that the present invention disclosed; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (8)
1. a combined box beam is characterized in that, comprises steel case beam and superhigh tenacity layer of concrete, and the superhigh tenacity layer of concrete is positioned on the steel case beam, bonds between superhigh tenacity layer of concrete and the steel case beam.
2. a kind of combined box beam according to claim 1; It is characterized in that the superhigh tenacity mix proportion is cement 21% to 45%, silicon ash 5% to 15%, flyash 0 to 15%, quartz sand 33% to 58%, quartz powder 5% to 15%, water-cement ratio 0.16 to 0.24, steel fibre 4% to 10%, nano-silicon 3% to 8% and high efficiency water reducing agent 0.8% to 1.5% in the superhigh tenacity layer of concrete.
3. according to claim 1 or 2 described a kind of combined box beams, it is characterized in that being furnished with reinforcing bar in the superhigh tenacity layer of concrete.
4. according to claim 1 or 2 described a kind of combined box beams, it is characterized in that, adopt structural adhesive and quartz sand to form the exasperate bonding between superhigh tenacity layer of concrete and the steel case beam.
5. according to claim 1 or 2 described a kind of combined box beams, it is characterized in that, adopt shearing resistance peg bonding between superhigh tenacity layer of concrete and the steel case beam.
6. according to claim 1 or 2 described a kind of combined box beams, it is characterized in that the superhigh tenacity coagulate layer thickness is 5 centimetres.
7. according to claim 1 or 2 described a kind of combined box beams, it is characterized in that the superhigh tenacity layer of concrete adopts hot and humid maintenance.
8. according to claim 1 or 2 described a kind of combined box beams, it is characterized in that the superhigh tenacity layer of concrete between the adjacent combined box beam adopts the cast in situs maintenance to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100126617A CN102561175A (en) | 2012-01-17 | 2012-01-17 | Combined box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100126617A CN102561175A (en) | 2012-01-17 | 2012-01-17 | Combined box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102561175A true CN102561175A (en) | 2012-07-11 |
Family
ID=46407660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100126617A Pending CN102561175A (en) | 2012-01-17 | 2012-01-17 | Combined box girder |
Country Status (1)
| Country | Link |
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| CN (1) | CN102561175A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087740A (en) * | 2016-08-09 | 2016-11-09 | 湖南中路华程桥梁科技股份有限公司 | A kind of beams of concrete STC combined bridge deck structure and construction method thereof |
| CN106396538A (en) * | 2016-08-25 | 2017-02-15 | 盐城工学院 | High-strength abrasion-resistant concrete, and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660293A (en) * | 2009-07-24 | 2010-03-03 | 武汉理工大学 | Paving method of steel box girder bridge deck payment layer |
| CN101935192A (en) * | 2010-09-10 | 2011-01-05 | 廖传海 | Anti-cracking and anti-permeability lightweight aggregate insulating concrete |
-
2012
- 2012-01-17 CN CN2012100126617A patent/CN102561175A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660293A (en) * | 2009-07-24 | 2010-03-03 | 武汉理工大学 | Paving method of steel box girder bridge deck payment layer |
| CN101935192A (en) * | 2010-09-10 | 2011-01-05 | 廖传海 | Anti-cracking and anti-permeability lightweight aggregate insulating concrete |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087740A (en) * | 2016-08-09 | 2016-11-09 | 湖南中路华程桥梁科技股份有限公司 | A kind of beams of concrete STC combined bridge deck structure and construction method thereof |
| CN106396538A (en) * | 2016-08-25 | 2017-02-15 | 盐城工学院 | High-strength abrasion-resistant concrete, and preparation method thereof |
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| C06 | Publication | ||
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| ASS | Succession or assignment of patent right |
Owner name: HU NAN UNIVERSITY GUANGDONG GUANSHENG GIVIL ENGINE Effective date: 20121204 Owner name: GUANGDONG GUANYUE ROAD +. BRIDGE CO., LTD. Free format text: FORMER OWNER: GUANGDONG GUANSHENG GIVIL ENGINEERING TECHNOLOGY CO., LTD. Effective date: 20121204 |
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Free format text: CORRECT: ADDRESS; FROM: 511450 GUANGZHOU, GUANGDONG PROVINCE TO: 510630 GUANGZHOU, GUANGDONG PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20121204 Address after: Tianhe District Tianrun road Guangzhou City, Guangdong province 510630 No. 461 eight floor Room 802 Applicant after: Guangdong Guanyue Highway & Bridge Co., Ltd. Applicant after: Hunan University Applicant after: Guangdong Guansheng Civil Engineering Technology Co., Ltd. Address before: 511450 Guangdong city of Guangzhou province Panyu City Bridge Fu Luo Jia Cun Yi Road 51 garden section Xinrun block 102 Applicant before: Guangdong Guansheng Civil Engineering Technology Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20120711 |