CN203878449U - Steel tube concrete string rigid beam - Google Patents

Steel tube concrete string rigid beam Download PDF

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Publication number
CN203878449U
CN203878449U CN201420279845.4U CN201420279845U CN203878449U CN 203878449 U CN203878449 U CN 203878449U CN 201420279845 U CN201420279845 U CN 201420279845U CN 203878449 U CN203878449 U CN 203878449U
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CN
China
Prior art keywords
steel tube
concrete
concrete filled
filled steel
upper chord
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201420279845.4U
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Chinese (zh)
Inventor
黄凯
陈金龙
邹立华
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Fuzhou University
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Fuzhou University
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Publication date
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Priority to CN201420279845.4U priority Critical patent/CN203878449U/en
Application granted granted Critical
Publication of CN203878449U publication Critical patent/CN203878449U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a steel tube concrete string rigid beam which comprises a steel tube concrete string beam inside and reinforced concrete outside. The steel tube concrete string beam comprises a steel tube concrete upper chord, a plurality of web members arranged at the bottom of the steel tube concrete upper chord, steel strands arranged at the bottoms of the web members and anchoring ends arranged at the two ends of the steel tube concrete upper chord and exerting prestressing force on the steel strands; the reinforced concrete comprises a reinforcing cage hung on the steel tube concrete upper chord and concrete; the steel tube concrete upper chord, the web members and the steel strands are surrounded by the reinforcing cage. In the construction process, dead loads and construction loads are all borne by the steel tube concrete string beam inside, supports are not needed, the construction efficiency is high, and the construction progress can be accelerated. Meanwhile, by means of the hoop function of a steel tube on the concrete, the strength of the concrete in the steel tube is improved, fragility of ultrahigh-strength concrete is improved, and the steel tube concrete string rigid beam has the advantages of being high in bearing capacity and good in plasticity and anti-seismic performance.

Description

A kind of concrete filled steel tube is opened string stiffness beam
Technical field
The utility model relates to a kind of concrete filled steel tube and opens string stiffness beam.
Background technology
Along with the development of national economy, Urbanization Construction constantly advances, having for many years of domestic infrastructure construction, city, rural area has a large amount of bridges to be about to build maybe to be needed to build, but be more and more difficult to coordinate at flourishing urban land resource and space, cause urban traffic bridge construction place narrow space, the support difficulty such as erecting scaffold under the condition that does not affect normal traffic, mountain area, central and west regions is many, the large slope of the discrepancy in elevation, ground, mountain area is steep and strategically located and difficult of access, there is karst more, landslide, unstable slope, avalanche, cliff, the unfavorable geologies such as coal gas stratum, and water system is numerous, hydrogeology situation is not quite similar along route, the construction environment of bridge is very complicated, often the support such as scaffold is difficult to set up, heavy mechanical equipment cannot enter.Therefore meeting under the condition of design force status, selecting one more economically, reasonably constructure scheme starts to become in bridge construction a very good problem to study.Simultaneously, China is a country that disaster takes place frequently, and when the disasters such as big flood, earthquake occur, tends to road traffic to do great damage, this sets up temporary bridge with regard to the position that makes to destroy at road traffic and is necessary very much, carries out disaster relief and rescue so that the rescue strength very first time enters disaster region.
Summary of the invention
The problem that the utility model exists for above-mentioned prior art is made improvement, be that technical problem to be solved in the utility model is to provide a kind of concrete filled steel tube and opens string stiffness beam, not only in work progress, dead load and working load are all opened string joist support by built-in concrete filled steel tube and are carried on a shoulder pole, without support, efficiency of construction is high, can accelerating construction progress; Simultaneously by steel pipe to concrete cuff effect, improve steel pipe inner concrete intensity, improve the fragility of super high strength concrete, therefore have advantages of that supporting capacity is high, plasticity and anti-seismic performance good.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of concrete filled steel tube is opened string stiffness beam, comprise that built-in concrete filled steel tube opens the steel concrete of string beam and outsourcing, described concrete filled steel tube is opened string beam and is comprised concrete filled steel tube upper chord, several are arranged on the web member of concrete filled steel tube upper chord bottom, be arranged on the steel strand of web member bottom, be arranged on concrete filled steel tube upper chord two ends and steel strand are applied to prestressed anchored end, described steel concrete comprises the reinforcing cage hanging on concrete filled steel tube upper chord, concrete, described concrete filled steel tube upper chord, web member and steel strand are all lived by reinforcing cage circle.
Further, described web member is in the shape of the letter V, and at grade, described web member is reduced to both sides volume successively by centre for described web member and concrete filled steel tube upper chord.
Further, described reinforcing cage comprises several reinforcing steel bar frames, the some transverse reinforcements that are arranged on reinforcing steel bar frame frame, and plane and the concrete filled steel tube upper chord at described reinforcing steel bar frame place are perpendicular, and described transverse reinforcement and concrete filled steel tube upper chord are in the same way.
Further, described reinforcing steel bar frame is polygon or abnormity, and described reinforcing steel bar frame is that plain bars or prestressed reinforcement are made.
Further, described transverse reinforcement is plain bars or prestressed reinforcement.
Further, described steel strand are prestressed reinforcement.
Further, described concrete filled steel tube upper chord forms by including concrete steel pipe, and the concrete in described steel pipe is high-intensity self-compaction slightly expanded concrete.
Compared with prior art, the utlity model has following beneficial effect: the utility model is in work progress, and dead load and working load are all opened string joist support by built-in concrete filled steel tube and carried on a shoulder pole, and without support, efficiency of construction is high, can accelerating construction progress; Simultaneously by steel pipe to concrete cuff effect, improve steel pipe inner concrete intensity, improve the fragility of super high strength concrete, therefore have advantages of that supporting capacity is high, plasticity and anti-seismic performance good.
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Brief description of the drawings
Fig. 1 is the organigram of the utility model embodiment.
Fig. 2 is the organigram that in the utility model embodiment, concrete filled steel tube is opened string beam.
Fig. 3 is the D structure schematic diagram that the utility model embodiment template hangs.
Fig. 4 is the cross-sectional configurations schematic diagram that the utility model embodiment concrete filled steel tube is opened string stiffness beam.
Fig. 5 is the organigram of the utility model embodiment U-shaped hanging piece.
In figure: 1-concrete filled steel tube upper chord, 2-web member, 3-steel strand, 4-anchored end, 5-reinforcing steel bar frame, 6-transverse reinforcement, 7-U shape hanging piece, 8-U-shaped hanging piece cross bar, 9-bottom template, 10-sidewall template.
Detailed description of the invention
Embodiment mono-: as shown in Fig. 1 ~ 5, a kind of concrete filled steel tube is opened string stiffness beam, comprise that built-in concrete filled steel tube opens the steel concrete of string beam and outsourcing, described concrete filled steel tube is opened string beam and is comprised concrete filled steel tube upper chord 1, several are arranged on the web member 2 of concrete filled steel tube upper chord 1 bottom, be arranged on the steel strand 3 of web member 2 bottoms, be arranged on concrete filled steel tube upper chord 1 two ends and steel strand 3 are applied to prestressed anchored end 4, described steel concrete comprises the reinforcing cage hanging on concrete filled steel tube upper chord, concrete, described concrete filled steel tube upper chord 1, web member 2 and steel strand 3 are all lived by reinforcing cage circle.
In the present embodiment, described web member 2 is in the shape of the letter V, and at grade, described web member 2 is reduced to both sides volume successively by centre for described web member 2 and concrete filled steel tube upper chord 1.
In the present embodiment, described reinforcing cage comprises several reinforcing steel bar frames 5, the some transverse reinforcements 6 that are arranged on reinforcing steel bar frame frame, plane and the concrete filled steel tube upper chord 1 at described reinforcing steel bar frame 5 places are perpendicular, and described transverse reinforcement 6 and concrete filled steel tube upper chord 1 are in the same way.
In the present embodiment, described reinforcing steel bar frame 5 is rectangular, and described reinforcing steel bar frame 5 is plain bars or prestressed reinforcement.
In the present embodiment, described transverse reinforcement 6 is plain bars or prestressed reinforcement.
In the present embodiment, described steel strand 3 are prestressed reinforcement.
In the present embodiment, described concrete filled steel tube upper chord 1 forms by including concrete steel pipe, and the concrete in described steel pipe is high-intensity self-compaction slightly expanded concrete.
Concrete filled steel tube is opened a construction method for string stiffness beam, adopts structure described above, carries out according to the following steps:
(1) concrete filled steel tube is opened the making of string beam: according to tube material, diameter, length, pouring concrete within steel pipe intensity, web member 2 materials, steel strand 3 diameters and stretch-draw prestressing force size in engineering concrete condition design concrete filled steel tube upper chord 1, make concrete filled steel tube open string beam by designing requirement;
(2) reinforcing cage of making being hung over to concrete filled steel tube opens on string beam;
(3) concrete filled steel tube of making being opened to string beam two ends is fixed on bridge pier, uniform several U-shaped hanging pieces 7 on concrete filled steel tube upper chord 1, U-shaped hanging piece 7 bottoms are connected with cross bar 8, lay bottom template 9, in all side upright side walls templates 10 of bottom template 9 on cross bar 8;
(4) toward the interior concrete perfusion of template, after its moulding, stripping, can obtain satisfactory concrete filled steel tube and open string stiffness beam.
In the present embodiment, the reinforcing steel bar frame in described reinforcing cage and the quantity of transverse reinforcement and position open string stiffness load bearing beam capacity limit state by concrete filled steel tube and serviceability limit state determines.
The foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.

Claims (7)

1. a concrete filled steel tube is opened string stiffness beam, it is characterized in that: comprise that built-in concrete filled steel tube opens the steel concrete of string beam and outsourcing, described concrete filled steel tube is opened string beam and is comprised concrete filled steel tube upper chord, several are arranged on the web member of concrete filled steel tube upper chord bottom, be arranged on the steel strand of web member bottom, be arranged on concrete filled steel tube upper chord two ends and steel strand are applied to prestressed anchored end, described steel concrete comprises the reinforcing cage hanging on concrete filled steel tube upper chord, concrete, described concrete filled steel tube upper chord, web member and steel strand are all lived by reinforcing cage circle.
2. concrete filled steel tube according to claim 1 is opened string stiffness beam, it is characterized in that: described web member is in the shape of the letter V, and at grade, described web member is reduced to both sides volume successively by centre for described web member and concrete filled steel tube upper chord.
3. concrete filled steel tube according to claim 1 is opened string stiffness beam, it is characterized in that: described reinforcing cage comprises several reinforcing steel bar frames, the some transverse reinforcements that are arranged on reinforcing steel bar frame frame, plane and the concrete filled steel tube upper chord at described reinforcing steel bar frame place are perpendicular, and described transverse reinforcement and concrete filled steel tube upper chord are in the same way.
4. concrete filled steel tube according to claim 3 is opened string stiffness beam, it is characterized in that: described reinforcing steel bar frame is polygon, and described reinforcing steel bar frame is that plain bars or prestressed reinforcement are made.
5. concrete filled steel tube according to claim 3 is opened string stiffness beam, it is characterized in that: described transverse reinforcement is plain bars or prestressed reinforcement.
6. concrete filled steel tube according to claim 1 is opened string stiffness beam, it is characterized in that: described steel strand are prestressed reinforcement.
7. concrete filled steel tube according to claim 1 is opened string stiffness beam, it is characterized in that: described concrete filled steel tube upper chord forms by including concrete steel pipe, and the concrete in described steel pipe is high-intensity self-compaction slightly expanded concrete.
CN201420279845.4U 2014-05-29 2014-05-29 Steel tube concrete string rigid beam Withdrawn - After Issue CN203878449U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420279845.4U CN203878449U (en) 2014-05-29 2014-05-29 Steel tube concrete string rigid beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420279845.4U CN203878449U (en) 2014-05-29 2014-05-29 Steel tube concrete string rigid beam

Publications (1)

Publication Number Publication Date
CN203878449U true CN203878449U (en) 2014-10-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420279845.4U Withdrawn - After Issue CN203878449U (en) 2014-05-29 2014-05-29 Steel tube concrete string rigid beam

Country Status (1)

Country Link
CN (1) CN203878449U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103981799A (en) * 2014-05-29 2014-08-13 福州大学 Steel tube concrete string stiffness beam and construction method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103981799A (en) * 2014-05-29 2014-08-13 福州大学 Steel tube concrete string stiffness beam and construction method thereof
CN103981799B (en) * 2014-05-29 2015-11-18 福州大学 A kind of concrete filled steel tube opens string stiff beam and construction method thereof

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20141015

Effective date of abandoning: 20151118

C25 Abandonment of patent right or utility model to avoid double patenting