CN101962975A - Novel prestressed steel pipe-concrete composite beam - Google Patents

Novel prestressed steel pipe-concrete composite beam Download PDF

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Publication number
CN101962975A
CN101962975A CN200910157999XA CN200910157999A CN101962975A CN 101962975 A CN101962975 A CN 101962975A CN 200910157999X A CN200910157999X A CN 200910157999XA CN 200910157999 A CN200910157999 A CN 200910157999A CN 101962975 A CN101962975 A CN 101962975A
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CN
China
Prior art keywords
steel
steel pipe
concrete
cable wire
draw
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Pending
Application number
CN200910157999XA
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Chinese (zh)
Inventor
王立军
余海群
孙雅欣
谭晋鹏
江源
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Ceri Architects & Engineers Co Ltd
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Ceri Architects & Engineers Co Ltd
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Publication date
Application filed by Ceri Architects & Engineers Co Ltd filed Critical Ceri Architects & Engineers Co Ltd
Priority to CN200910157999XA priority Critical patent/CN101962975A/en
Publication of CN101962975A publication Critical patent/CN101962975A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a novel prestressed steel pipe-concrete composite beam, and belongs to the technical field of building structure engineering. The prestressed composite beam mainly comprises a steel beam (1) and a concrete floor slab (2) poured on the steel beam, and is characterized in that: a bottom flange of the steel beam is a steel pipe (3); a plurality of linear steel ropes (4) are arranged in the steel pipe; after the prestressed steel ropes are strained, two ends of the steel pipe (3) are sealed; and the concrete floor slab (2) is poured. Compared with a steel beam and a common composite beam, the novel composite beam has the advantages of great reduction of midspan deflection and steel beam section stress, easy strain of the steel ropes, effective anticorrosion and fire prevention, simple and convenient construction and remarkable economic benefits.

Description

A kind of novel pre-stressed steel tube-concrete compound beam
Technical field
The present invention is a kind of novel pre-stressed steel tube-concrete compound beam, belongs to technical field of structural engineering.
Background technology
Steel-concrete composite beam has characteristics such as bearing capacity height, ductility is good, rigidity is big, obtained using comparatively widely in bridge, industry and civilian construction, but compound beam also exists shortcomings such as distortion is big, hogging moment area is easy to crack.Adopting the steel pipe prestress combined beam is the effective way that addresses the above problem.The steel pipe prestressing technique is combined with common compound beam, the steel pipe in the compound beam is applied prestressing force, promptly formed prestress combined beam.Prestress combined beam has the advantage of common compound beam and prestressed structure simultaneously, has made full use of the strength of materials, has improved bearing of component, improved the stress of member, alleviated the deadweight of structure, saved material, and easy construction, stretch-draw effect are remarkable.
Summary of the invention
The object of the present invention is to provide a kind of pre-stressed steel pipe-concrete combination beam, this compound beam has the intensity height, stretch-draw is effective, construction is simple, advantages such as economical with materials, reduction cost.
Common compound beam is a design feature of utilizing steel and two kinds of materials of concrete, a whole flexural member that combines by shear connector.Distortion is big, the regional concrete slab of hogging moment is in deficiencies such as tension but have in actual applications.And pre-stressed steel pipe-concrete combination beam is on the basis of common compound beam, by arranging the high strength cable wire in steel pipe, and cable wire is carried out stretch-draw, makes compound beam set up prestressing force before bearing whole external loads.
The prestress combined beam that the present invention proposes is that the bottom flange of girder steel (1) is steel pipe (3), arranges some straight line cable wires (4) in steel duct, then stretch-draw prestressing force cable wire, fluid concrete plate (2) at last.After applying prestressing force, compare with girder steel and common compound beam, mid-span deflection and girder steel section stress all descend significantly, remarkable in economical benefits.Comprehensive comparative analysis shows, adopt the steel tube-concrete prestress combined beam, not only can satisfy supporting capacity and the normal requirement of using two class ultimate limit states fully, and because of easy construction, cost compares the common prestressed concrete scheme and all steel beam scheme will significantly reduce.
Pre-stressed steel pipe-concrete combination beam, the concrete floor (2) that it mainly comprises girder steel (1) and pours into a mould above, it is characterized in that: the girder steel bottom flange is steel pipe (3), arrange some straight line cable wires (4) in steel duct, the stretch-draw prestressed cable of anticorrosion with painting, fireproof paint (4) in advance then, and after cable wire execution prestressed stretch-draw, steel pipe is sealed at both ends, last fluid concrete plate (2).Compare with conventional composite beam, the invention has the advantages that:
1) makes full use of the strength of materials, improved bearing of component;
2) improved the stress of member, material has been saved in the deadweight that has alleviated structure;
3), the brittle failure possibility of low toughness girder steel is reduced by applying the maximum tension stress that prestressing force has reduced member;
4) cable wire in the steel pipe is carried out stretch-draw, not only easy construction, and stretch-draw effect is remarkable;
5) cable wire in the steel pipe can effectively anticorrosion and fire prevention.
Description of drawings
Fig. 1 is the sectional view of the embodiment of the invention
Fig. 2 is the A-A sectional view of the embodiment of the invention
The specific embodiment:
Embodiment: girder steel (1) bottom flange is steel pipe (3), at steel pipe (3) some straight line cable wires of internal placement (4), the stretch-draw prestressed cable of sprayed fire proofing, anticorrosive paint (4) in advance then, after the stretch-draw steel pipe two ends are sealed, at girder steel top layout peg shear connectors such as (5), last fluid concrete plate (2).

Claims (4)

1. pre-stressed steel pipe-concrete combination beam, the concrete floor (2) that it mainly comprises girder steel (1) and pours into a mould above, it is characterized in that: the girder steel bottom flange is steel pipe (3), arrange some straight line cable wires (4) in steel duct, stretch-draw prestressing force cable wire (4) then, after the stretch-draw steel pipe (3) two ends are sealed last fluid concrete plate.
2. according to claims 1 described pre-stress steel-concrete compound beam, it is characterized in that: described steel tube section can be a round steel pipe, also can be square steel pipe and other section steel pipes.
3. according to claims 1 described pre-stress steel-concrete compound beam, it is characterized in that: arrange the straight line cable wire in steel duct, cable wire can be coated with anticorrosion fireproof paint, and to after the cable wire execution prestressed stretch-draw, steel pipe is sealed at both ends.
4. according to claims 1 described pre-stress steel-concrete compound beam, it is characterized in that every girder steel top all has peg (5) or other shear connectors to link to each other with concrete floor.
CN200910157999XA 2009-07-21 2009-07-21 Novel prestressed steel pipe-concrete composite beam Pending CN101962975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910157999XA CN101962975A (en) 2009-07-21 2009-07-21 Novel prestressed steel pipe-concrete composite beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910157999XA CN101962975A (en) 2009-07-21 2009-07-21 Novel prestressed steel pipe-concrete composite beam

Publications (1)

Publication Number Publication Date
CN101962975A true CN101962975A (en) 2011-02-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910157999XA Pending CN101962975A (en) 2009-07-21 2009-07-21 Novel prestressed steel pipe-concrete composite beam

Country Status (1)

Country Link
CN (1) CN101962975A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102296734A (en) * 2011-07-21 2011-12-28 深圳市建筑设计研究总院有限公司 Combined net support
CN103334374A (en) * 2013-04-16 2013-10-02 重庆交通大学 PCSS connecting structure
CN107326794A (en) * 2017-05-27 2017-11-07 重庆大学 A kind of assembled integral prestress steel Combined concrete beam type bridge
CN109898713A (en) * 2019-01-04 2019-06-18 西安理工大学 A kind of quick assembling is bolted semi-rigid corrugated shear connector entirely
CN110805165A (en) * 2019-11-18 2020-02-18 西藏涛扬新型建材科技有限公司 Assembled row steel pipe concrete composite wall building structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102296734A (en) * 2011-07-21 2011-12-28 深圳市建筑设计研究总院有限公司 Combined net support
CN102296734B (en) * 2011-07-21 2013-07-10 深圳市建筑设计研究总院有限公司 Combined net support
CN103334374A (en) * 2013-04-16 2013-10-02 重庆交通大学 PCSS connecting structure
CN103334374B (en) * 2013-04-16 2016-08-31 广东省长大公路工程有限公司 PCSS shearing coupling arrangement
CN107326794A (en) * 2017-05-27 2017-11-07 重庆大学 A kind of assembled integral prestress steel Combined concrete beam type bridge
CN107326794B (en) * 2017-05-27 2019-06-25 重庆大学 A kind of assembled integral Prestressed steel-concrete composite beam formula bridge and its construction method
CN109898713A (en) * 2019-01-04 2019-06-18 西安理工大学 A kind of quick assembling is bolted semi-rigid corrugated shear connector entirely
CN110805165A (en) * 2019-11-18 2020-02-18 西藏涛扬新型建材科技有限公司 Assembled row steel pipe concrete composite wall building structure

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Open date: 20110202