CN102852278B - A kind of double precast beam-superposed frame beam - Google Patents
A kind of double precast beam-superposed frame beam Download PDFInfo
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- CN102852278B CN102852278B CN201210291358.5A CN201210291358A CN102852278B CN 102852278 B CN102852278 B CN 102852278B CN 201210291358 A CN201210291358 A CN 201210291358A CN 102852278 B CN102852278 B CN 102852278B
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Abstract
A kind of double precast beam-superposed frame beam, reinforced concrete part is watered including after the prefabricated beam body of prestressing force of two inverted T-shapeds and T-shaped, the two composition has the composite beam of concavo-convex superposed surfaces, it is characterized in that: described invertible T-shaped precast beam is longitudinally embedded with prestress wire, it is embedded with rectangle hoop on precast beam web, stirrup stretches out web upper surface certain length, waters part concrete top and be longitudinally embedded with reinforcing bar after described composite beam.The present invention beam bigger for width be divided into two beam prefabricated, make precast beam deadweight significantly alleviate, lift convenient, institute so that installation cost reduce.
Description
Technical field
The present invention relates to the beam in a kind of building, particularly relate to a kind of prestressed reinforced concrete composite beam.
Background technology
The pre-erection of tradition reinforced concrete composite beam typically uses square-section or inverted T-shaped cross section, when beam span is bigger,
Prefabricated cross section is big, from great, lifting difficulty.Must configure, for skyscraper, the tower crane that elevating capacity is bigger, expense increases, separately
Outer for high intensity Zone, Vierendeel girder usual beam-ends sagging moment is relatively big, and pretensioned prestressing framework composite beam beam-ends needs to arrange
Cracking resistance power consumption additional bar, to meet antidetonation force request, but buries additional bar underground and makes trouble in precast beam, building site is installed tired
Difficult.A kind of after water and part concrete is buried underground the consume energy composite beam of double prefabricated tee girder of additional square reinforcing bar of cracking resistance have no report.
Summary of the invention
The technical problem to be solved is to overcome the deficiency of above-mentioned prior art, it is provided that one facilitates prefabricated peace
Dress, beneficially construction hoisting, and anti-seismic performance is good, the double precast beam-superposed frame beam of low cost.
A kind of double precast beam-superposed frame beam provided according to the present invention, including the prefabricated beam body of prestressing force and the T of two inverted T-shapeds
Watering reinforced concrete part after shape, the two composition has the composite beam of concavo-convex superposed surfaces, and the prefabricated beam body of prestressing force of described inverted T-shaped is longitudinally
Being embedded with prestress wire, precast beam web is embedded with rectangle hoop, stirrup stretches out web upper surface certain length, described
Water part concrete top after composite beam and be longitudinally embedded with reinforcing bar, described after water part concrete and at least bury underground in the certain length of beam-ends bottom
Having longitudinally additional cracking resistance reinforcing bar, longitudinally additional cracking resistance reinforcing bar stretches in bean column node, after water part concrete and be embedded with stirrup.
A kind of double precast beam laminated frames provided according to the present invention are set a roof beam in place and are also had following attached technical characteristic:
Water part concrete after described only to arrange in beam end certain length, only water in the middle part of beam and smash with floor with thick concrete, in
The double joint soffit of girder sheet separation in portion arranges the diaphragm plate being perpendicular to web, cavity filling with light material between the beam of middle part or in install
Permanent formwork.
It is embedded with pre-buried tie bar on the downside of the prefabricated beam body of the prestressing force at least side web of described inverted T-shaped.
Two described precast beam bottoms are at a distance from, lower flange of girder intermarginal filling concrete, or are not filled with concrete in the middle part of beam.
Web side and the edge of a wing upper surface of described precast beam superposed surfaces are processed into crude.
Watering part after beam-ends and be embedded with bent-up bar, bent-up bar is zigzag, two bent-up bar lower ends be connected in
U-shaped.
A kind of double precast beam laminated frames provided according to the present invention are set a roof beam in place and are compared with prior art had the advantage that head
First: the present invention beam bigger for width be divided into two beam prefabricated, make precast beam deadweight significantly alleviate, lift convenient, so
Installation cost is made to reduce.Secondly: because the middle part of the present invention can be made hollow, therefore on the premise of intensity is unaffected, can make
Composite beam weight reduction, so that structure stress reduces.Finally, because the beam-ends antidetonation additional bar of the present invention is without at precast beam
In pre-buried, and burying underground in rear pouring concrete, so greatly facilitating construction, making structural seismic performance improve simultaneously.It addition, prefabricated with
Superposed surfaces concave-convex surface between Cast-in-place concrete, concrete contact area strengthens, and shear bond strength performance is greatly improved, and beam globality is strengthened.
Accompanying drawing explanation
Fig. 1 is the single precast beam axonometric chart of the present invention
Fig. 2 is two combination precast beam axonometric charts of the present invention
Fig. 3 is the arrangement of reinforcement elevation of the composite beam of the present invention
Fig. 4 is a kind of combining form profile of the present invention
Fig. 5 is the another kind of combining form profile of the present invention
Fig. 6 be the present invention have cavity composite beam middle section figure
Detailed description of the invention
See figure one to figure six, in the embodiment that a kind of prefabricated laminated frame provided in the present invention is set a roof beam in place, fall T including two
Watering part concrete 2 after the prefabricated beam body of prestressing force 1 of shape and T-shaped, the two composition has the composite beam of concavo-convex superposed surfaces, described inverted T-shaped
Prestressing force prefabricated beam body 1 be longitudinally embedded with prestress wire 11, precast beam web is embedded with rectangle hoop 12, stirrup 12
Stretch out web upper surface certain length, water part concrete 2 top after described composite beam and be longitudinally embedded with reinforcing bar 21, two inverted T-shapeds
The prefabricated beam body of prestressing force 1 is to reduce the deadweight of the bigger precast beam of deck-siding, makes transporting and hoisting more convenient, and the beam top after overlapping is buried
If longitudinal reinforcement 21, make composite beam become continuous beam, thus reduce beam mid span moment, described after water part concrete 2 at least at beam-ends
Certain length is embedded with longitudinally additional cracking resistance reinforcing bar 22, and longitudinally additional cracking resistance reinforcing bar stretches in bean column node, after water part concrete 2 can
To be embedded with stirrup 23.Water after the beam end of part concrete 2 bury underground longitudinally additional cracking resistance reinforcing bar for make beam under geological process, beam
End bottom occurs crack the most in advance, and for improving " plastic hinge " energy dissipation capacity, and stirrup 23 is for making beam stress more preferable, improves entirety
Performance.
See figure four, figure five, figure six, in the embodiment that the present invention is given, described after water part concrete 2 only in beam end one
Arranging in measured length, only water and smash thick concrete same with plate in the middle part of beam, the double joint soffit of girder sheet separation at middle part arranges and is perpendicular to web
Diaphragm plate 24, cavity filling with light material between the beam of middle part or install beam permanent formwork.Beam is only solid in end, and middle part
If cavity, it is on the premise of not affecting beam strength, alleviates composite beam deadweight, save concrete simultaneously, and diaphragm plate is for improving beam
There iing the stress performance at cavity.
See figure one, figure two, in the embodiment that the present invention is given, the prefabricated beam body of prestressing force 1 at least of described inverted T-shaped
Be embedded with pre-buried tie bar 13 on the downside of curb girder web, the tension rib 13 of the prefabricated beam body of prestressing force 1 of inverted T-shaped be usually located at beam-ends and
Span centre has the position of diaphragm plate 24, and it predominantly makes two prefabricated beam bottoms have drawknot, makes composite beam globality improve.
See figure five, figure six, in the embodiment that the present invention is given, described two precast beam bottoms at a distance from,
Lower flange of girder intermarginal filling concrete, or in the middle part of beam, it is not filled with concrete, pull open certain distance between precast beam, make beam wider, thus improve beam
Bearing capacity, but span centre part can be saved concrete and not affect bearing capacity.
See figure three, in the embodiment that the present invention is given, water part after beam-ends and be embedded with bent-up bar 14, bent-up bar
14 in zigzag, and two bent-up bar lower ends are connected and take the shape of the letter U.Overlapping beam-ends buries bent-up bar 14 underground, for improving overlapping beam-ends
Anti-shear ability.
Claims (6)
1. a double precast beam-superposed frame beam, waters reinforced concrete portion including after the prefabricated beam body of prestressing force of two inverted T-shapeds and T-shaped
Point, the two composition has the composite beam of concavo-convex superposed surfaces, it is characterized in that: the prefabricated beam body of prestressing force of described inverted T-shaped is longitudinally embedded with
Prestress wire, precast beam web is embedded with rectangle hoop, and stirrup stretches out web upper surface certain length, described composite beam
After water part concrete top and be longitudinally embedded with reinforcing bar, described after water part concrete and at least in the certain length of beam-ends bottom, be embedded with longitudinal direction
Additional cracking resistance reinforcing bar, longitudinally additional cracking resistance reinforcing bar stretches in bean column node, after water part concrete and be embedded with stirrup.
2. laminated frame as claimed in claim 1 is set a roof beam in place, and it is characterized in that: water part concrete after described only in beam end certain length
Arranging, only water and smash with floor with thick concrete in the middle part of beam, the double joint soffit of girder sheet separation setting at middle part is perpendicular to the diaphragm plate of web,
Middle part beam between cavity filling with light material or in install permanent formwork.
3. laminated frame as claimed in claim 1 is set a roof beam in place, and it is characterized in that: the prefabricated beam body of the prestressing force at least side of described inverted T-shaped
Pre-buried tie bar it is embedded with on the downside of web.
4. laminated frame as claimed in claim 1 is set a roof beam in place, and it is characterized in that: two described precast beam bottoms are at a distance from, beam
Bottom wing intermarginal filling concrete, or in the middle part of beam, it is not filled with concrete.
5. laminated frame as claimed in claim 1 is set a roof beam in place, and it is characterized in that: on the web side of described precast beam superposed surfaces and the edge of a wing
Surface Machining becomes crude.
6. laminated frame as claimed in claim 1 is set a roof beam in place, and it is characterized in that: waters part after beam-ends and is embedded with bent-up bar, bends up steel
Muscle is zigzag, and two bent-up bar lower ends are connected and take the shape of the letter U.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210291358.5A CN102852278B (en) | 2012-08-16 | 2012-08-16 | A kind of double precast beam-superposed frame beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210291358.5A CN102852278B (en) | 2012-08-16 | 2012-08-16 | A kind of double precast beam-superposed frame beam |
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| Publication Number | Publication Date |
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| CN102852278A CN102852278A (en) | 2013-01-02 |
| CN102852278B true CN102852278B (en) | 2016-08-24 |
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| CN201210291358.5A Active CN102852278B (en) | 2012-08-16 | 2012-08-16 | A kind of double precast beam-superposed frame beam |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590535A (en) * | 2013-11-14 | 2014-02-19 | 苏州工业园区设计研究院股份有限公司 | Opening structure of reinforced concrete beam |
| CN106812244A (en) * | 2017-02-14 | 2017-06-09 | 杨志业 | The preparation method of the continuous superposed floor of precast beam, prefabricated PC and superstructure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2633992Y (en) * | 2003-09-09 | 2004-08-18 | 吴方伯 | Steel bar concrete prefabricated member for compound girder |
| CN201087480Y (en) * | 2007-08-16 | 2008-07-16 | 同济大学 | Prestressed concrete composite beam |
| CN101487332A (en) * | 2009-02-09 | 2009-07-22 | 刘馨裕 | Prefabricated hollow superposed beam, and cast-in-situ construction method for beam and precast slab |
| CN201785940U (en) * | 2010-09-28 | 2011-04-06 | 杨峰 | Reinforced concrete prefabricated beam |
| CN201794214U (en) * | 2010-09-28 | 2011-04-13 | 杨峰 | Prefabricated beam with cavity |
| CN202831384U (en) * | 2012-08-16 | 2013-03-27 | 杨众 | Double-prefabricated superposed frame beam |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101068682B1 (en) * | 2009-02-05 | 2011-09-28 | 주식회사 장헌산업 | Inverted T-girder, ramen bridge using the same and construction method |
-
2012
- 2012-08-16 CN CN201210291358.5A patent/CN102852278B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2633992Y (en) * | 2003-09-09 | 2004-08-18 | 吴方伯 | Steel bar concrete prefabricated member for compound girder |
| CN201087480Y (en) * | 2007-08-16 | 2008-07-16 | 同济大学 | Prestressed concrete composite beam |
| CN101487332A (en) * | 2009-02-09 | 2009-07-22 | 刘馨裕 | Prefabricated hollow superposed beam, and cast-in-situ construction method for beam and precast slab |
| CN201785940U (en) * | 2010-09-28 | 2011-04-06 | 杨峰 | Reinforced concrete prefabricated beam |
| CN201794214U (en) * | 2010-09-28 | 2011-04-13 | 杨峰 | Prefabricated beam with cavity |
| CN202831384U (en) * | 2012-08-16 | 2013-03-27 | 杨众 | Double-prefabricated superposed frame beam |
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