CN103924681B - Prestressing force connects precast concrete beam square steel tube concrete column reinforcing joint - Google Patents
Prestressing force connects precast concrete beam square steel tube concrete column reinforcing joint Download PDFInfo
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- CN103924681B CN103924681B CN201410151216.8A CN201410151216A CN103924681B CN 103924681 B CN103924681 B CN 103924681B CN 201410151216 A CN201410151216 A CN 201410151216A CN 103924681 B CN103924681 B CN 103924681B
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Abstract
A kind of prestressing force connection precast concrete beam square steel tube concrete column reinforcing joint belongs to building structure technology field.Including square steel tube concrete column, reinforced beam, presstressed reinforcing steel, steel plate, channel-section steel.Square steel tube concrete column（1）With reinforced beam（2）It is prefabricated；Apertured road, and the built-in metal bellows in duct are stayed in precast reinforced concrete beam, the position of square steel tube concrete column correspondence beam section（4）；Square steel tube concrete column（1）Upper and reinforced beam（2）Welding steel at connection section（5）；Channel-section steel（6）It is welded on square steel tube；In metal bellows（4）In after wear presstressed reinforcing steel（3）, tensioned prestressing bar（3）；Duct grouting is completed after the completion of tensioning within 48h, so as to beam column is constituted into overall.Speed of application of the present invention is fast, can be effectively increased the shear-carrying capacity of node, strengthens its switching performance, has a extensive future.
Description
Technical field
The present invention relates to prestressing force connection precast concrete beam square steel tube concrete column reinforcing joint, belong to building structure skill
Art field.
Background technology
Existing more than the 100 years history of application concrete filled steel tube in architectural engineering.Concrete filled steel tube due to high capacity,
The advantages of plasticity and good toughness, good economical benefit and easy construction and paid attention to by engineering circles.Concrete filled steel tube adapts to the modern times
Engineering structure is to across, towering, heavily loaded development and the need for bearing mal-condition, the industrialization for meeting Modern Construction Technology will greatly
Ask, thus be just increasingly widely used in individual layer and multi storied industrial factory building post, equipment frame post, pier, stake, space knot
In structure, commercial square, multistory office and house, high-rise and high-rise building and bridge structure, good economy has been obtained
Effect and architectural effect.Wherein, concrete-filled circular steel tube column has made more research in China, corresponding code has been worked out, in reality
Also more application has been obtained in the engineering of border.Square steel tube concrete is an important composition of whole concrete filled steel tube
Part, it is in status arranged side by side with concrete filled steel tube.Square steel tube concrete profile rule, is conducive to coordinating building to set
Meter, is conducive to beam-to-column joint, there is preferable application prospect.
Square steel tube concrete column and the key issue that the connecting node of beam is when carrying out concrete filled steel tube engineering design
One of, the validity of its connecting node directly affects integrally-built rigidity, stability and bearing capacity, also has influence on scene and applies
Work difficulty and construction speed.Existing Concrete-filled tubular connections form is various, and the construction of node and design difficulty often turn into system
The bottleneck factor of about new superior structural popularization and application.Therefore, one kind is researched and developed new with in-site installation simple and fast, to operation
Personnel's technology and construction environment are less demanding, connect safe and reliable square steel tube concrete column and girder connection form, it appears
It is very necessary.
This construction method of bonded prestress, by duct grouting, makes presstressed reinforcing steel mutually be bonded with concrete, mitigates
Anchorage transmission prestressing force effect, improves anchorage reliability and durability, is widely used in main supporting member or structure.
The content of the invention
It is an object of the invention to propose a kind of prestressing force connection precast concrete beam square steel tube concrete column section
Point, ensure node connection effectively, power transmission it is clear and definite under the premise of, by improving precast reinforced concrete beam and square steel tube
Concrete column reinforcing joint connected mode, is assembled using presstressed reinforcing steel, is reduced difficulty of construction, is accelerated construction speed.This hair
Bright speed of application is fast, can be effectively increased the shear-carrying capacity of node, strengthens its switching performance, has a extensive future.
To achieve the above object, the technical solution adopted by the present invention is that a kind of prestressing force connects precast concrete beam side's rectangle
Frame Joints of Concrete-Filled Steel Tube, as shown in Figure 1, 2, the node includes square steel tube concrete column 1 and precast reinforced concrete beam
2, the two constitutes overall by presstressed reinforcing steel；Square steel tube concrete column 1 is prefabricated with reinforced beam 2；Reinforced concrete
Apertured road, and the built-in metal bellows 4 in duct are stayed on Tu Liang, the section of square steel tube concrete column correspondence beam section；
Welding steel 5 on section are connected with reinforced beam 2 on square steel tube concrete column 1, there is corresponding hole on steel plate 5；
Channel-section steel 6 is welded on square steel tube；Presstressed reinforcing steel 3, tensioned prestressing bar 3 are worn after in the metal bellows 4；After the completion of tensioning
The inherence duct of 48h fills mortar 7, so as to beam column is constituted into overall.
The steel plate 5 is general steel plate, and width is beam section height, and thickness is thickness of steel pipe.
The web height of the channel-section steel 6 is beam section width, and flange width is beam section height, and channel-section steel length is that beam section is high
Degree.
The design principle of the prestressing force size of presstressed reinforcing steel 3 is：The friction shear resisting ability of junction should be ensured, made again
Stress in presstressed reinforcing steel is remained within yield limit.
Side column end steel plate can as 3 tensioning of presstressed reinforcing steel when bearing plate.
It is fast using this node site operation speed, and the reliability of node connection can be ensured.This node is used
Steel plate, can mitigate the weakening effect to bearing capacity when square steel tube punches；The anti-of bean column node can be increased using channel-section steel
Cut bearing capacity；Using deformed bar, by duct grouting, presstressed reinforcing steel is mutually bonded with concrete, alleviate anchorage biography
Prestressing force effect is passed, the performance of reinforced beam is improve, this brings huge economy to the economy of China and social development
Benefit, has a extensive future.
Brief description of the drawings
Fig. 1 is interior joint front elevation view
Fig. 2 is mid-side node front elevation view
Fig. 3 is sectional views of the Fig. 1 along A-A
Fig. 4 is sectional views of the Fig. 2 along B-B
Fig. 5 is sectional views of the Fig. 2 along C-C
Fig. 6 is sectional views of the Fig. 1 along D-D
In figure, 1, square steel tube concrete column, 2, reinforced beam, 3, presstressed reinforcing steel, 4, metal bellows, 5, steel
Plate, 6, channel-section steel, 7, mortar.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
As shown in figures 1 to 6.
Embodiment 1
Prestressing force connection precast concrete beam square steel tube concrete column reinforcing joint construction is as shown in Figure 1：
1st, the making of square steel tube concrete and reinforced concrete beam
In factory in strict accordance with related specifications and drawing making square steel tube concrete column 1 and reinforced beam 2, in advance
Reserved four correspondences ducts when processed, duct internal diameter 15mm bigger than presstressed reinforcing steel diameter, built-in metal bellows 4 in duct,
Tie-beam interface uses weld all around mode welding steel 5 and channel-section steel 6 on square steel tube concrete column 1.
2nd, the assembling of bean column node
After square steel tube concrete column 1 is positioned, reinforced beam 2 is set to lift positioning by support.
3rd, tensioned prestressing bar
Presstressed reinforcing steel 3, tensioned prestressing bar 3 are worn in bellows 4.Tensioning uses symmetrical stretching mode, the work of stretching force
Overlapped with duct center line with line.Using stress and stretch value dual control, stressing sequence is 0 → 10% σ to cable tensios controlcon→ 100%
σcon→ 103% σcon→ anchoring.
4th, duct grouting
Mortar 7 is filled to duct within 48h after the completion of tensioning, grouting uses 42.5R Portland cements, in filling process
Keep continuous consistent.
5th, cut
After tensioning terminates, presstressed reinforcing steel will be exposed using portable grinder cutting machine and cut off, its protruded length will be unsuitable small
In 1.5 times of presstressed reinforcing steel diameter, and not less than 30mm.
Embodiment 2
See Fig. 2 when for side column node, other measures, simply in the end of side column, presstressed reinforcing steel are welded with embodiment 1
On steel plate 5, this ring flat-plate can as tension of prestressed tendon when bearing plate.
Claims (2)
1. prestressing force connection precast concrete beam square steel tube concrete column reinforcing joint, is characterised by：Square steel tube concrete
Post (1) is prefabricated with reinforced beam (2)；Precast reinforced concrete beam, square steel tube concrete column correspondence beam section
Position stay apertured road, and built-in metal bellows (4) in duct；It is mixed with reinforcing bar on square steel tube concrete column (1)
Welding steel (5) on solidifying Tu Liang (2) connections correspondence section, steel plate has corresponding hole on (5)；Channel-section steel (6) side of being welded on rectangle steel
Guan Shang；Presstressed reinforcing steel (3), tensioned prestressing bar (3) are worn after in the metal bellows (4)；Hole is completed after the completion of tensioning within 48h
Road is in the milk, so as to beam column is constituted into overall；
Node is connected by bonded prestressed tendon (3)；
Steel plate (5) is general steel plate, and width is beam section height, and thickness is thickness of steel pipe.
2. prestressing force according to claim 1 connects precast concrete beam square steel tube concrete column reinforcing joint, its feature
It is：Channel-section steel (6) web height is beam section width, and flange width is beam section height, and channel-section steel length is beam section height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410151216.8A CN103924681B (en) | 2014-04-14 | 2014-04-14 | Prestressing force connects precast concrete beam square steel tube concrete column reinforcing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410151216.8A CN103924681B (en) | 2014-04-14 | 2014-04-14 | Prestressing force connects precast concrete beam square steel tube concrete column reinforcing joint |
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| Publication Number | Publication Date |
|---|---|
| CN103924681A CN103924681A (en) | 2014-07-16 |
| CN103924681B true CN103924681B (en) | 2017-06-16 |
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| CN201410151216.8A Active CN103924681B (en) | 2014-04-14 | 2014-04-14 | Prestressing force connects precast concrete beam square steel tube concrete column reinforcing joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105863047A (en) * | 2016-05-10 | 2016-08-17 | 上海理工大学 | Prefabricated concrete beam column joint and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2762906B2 (en) * | 1993-11-16 | 1998-06-11 | 鹿島建設株式会社 | RC frame |
| JPH10115000A (en) * | 1996-10-08 | 1998-05-06 | Fudo Kenken Kk | Wet type connecting method of precast beam and column in reinforced-concrete constructed building |
| JP4094149B2 (en) * | 1999-01-12 | 2008-06-04 | 大和ハウス工業株式会社 | Column and beam joint structure |
| CN1314869C (en) * | 2004-02-25 | 2007-05-09 | 华南理工大学 | Connection structure of connection of floor beam and steel pipe concrece pole and construction method thereof |
| CN101550728B (en) * | 2009-04-30 | 2011-01-05 | 中国建筑股份有限公司 | The nodes and construction method for concrete filled steel tubular column and in-situ reinforced concrete beam |
| CN101798849B (en) * | 2010-03-26 | 2011-07-20 | 东南大学 | Node connection device for self-centering prestressed concrete frame |
| JP5408595B1 (en) * | 2013-06-21 | 2014-02-05 | 黒沢建設株式会社 | PC seismic joint structure and PC seismic joint method for columns and beams using steel pins |
| CN103469900B (en) * | 2013-09-10 | 2015-06-24 | 江苏翔森建设工程有限公司 | Pre-stress carbon-fiber deformed steel bar strengthening structure for refrigeration storage structure nodes and method for producing strengthening structure |
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