CN103924676B - Prestressing force connects beams of concrete concrete-filled circular steel tube column node - Google Patents
Prestressing force connects beams of concrete concrete-filled circular steel tube column node Download PDFInfo
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- CN103924676B CN103924676B CN201410149366.5A CN201410149366A CN103924676B CN 103924676 B CN103924676 B CN 103924676B CN 201410149366 A CN201410149366 A CN 201410149366A CN 103924676 B CN103924676 B CN 103924676B
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Abstract
A kind of prestressing force connects beams of concrete concrete-filled circular steel tube column node, belongs to building structure technology field.Including concrete-filled circular steel tube column, reinforced beam, presstressed reinforcing steel, ring flat-plate, channel-section steel.Concrete-filled circular steel tube column is cast-in-place with reinforced beam；Concrete-filled circular steel tube column is connected with reinforced beam using presstressed reinforcing steel；Concrete-filled circular steel tube column leaves duct with reinforced beam junction, the built-in metal bellows in duct；Concrete filled steel tube welds annulate lamella with beam junction, there is corresponding hole on ring flat-plate；Channel-section steel is welded in round steel pipe.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 beams of concrete concrete-filled circular steel tube column node, belong to building structure technology field.
Background technology
Existing more than the 100 years history of application concrete filled steel tube in architectural engineering.Concrete filled steel tube is due to bearing capacity
The advantages of high, plasticity and good toughness, good economical benefit and easy construction and paid attention to by engineering circles.Concrete filled steel tube is adapted to
Modern project structure to across, towering, heavily loaded development and the need for bearing mal-condition, meeting the industrialization of Modern Construction Technology greatly
It is required that, thus just increasingly it is being widely used in individual layer and multi storied industrial factory building post, equipment frame post, pier, stake, space
In structure, commercial square, multistory office and house, high-rise and high-rise building and bridge structure, good warp has been obtained
Ji effect and architectural effect.Especially in recent years, it is rapid in undergoing an unusual development for China's concrete filled steel tube structure, to round steel pipe
The research of concrete structure is also more and more.
Concrete-filled circular steel tube column is one of key issue when carrying out concrete filled steel tube engineering design with the connecting node of beam,
The validity of its connecting node directly affects integrally-built rigidity, stability and bearing capacity, also has influence on site operation difficult
Degree and construction speed.Existing Concrete-filled tubular connections form is various, and construction is complicated mostly, and difficulty of construction is big, and power transmission is indefinite,
Node computation model is indefinite, and China is also without a set of more complete node computational theory and method for designing so far.Therefore, research and develop
A kind of new, concrete-filled circular steel tube column that connection is safe and reliable and girder connection form, it appears 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
Object of the present invention is to provide a kind of prestressing force connection beams of concrete concrete-filled circular steel tube column node, ensureing
Node connection effectively, power transmission it is clear and definite under the premise of, be connected with concrete-filled circular steel tube column node by improving reinforced beam
Mode, is assembled using presstressed reinforcing steel, reduces difficulty of construction, accelerates construction speed.Speed of application of the present invention is fast, can
The shear-carrying capacity of node is effectively increased, strengthens its switching performance, had a extensive future.
To achieve the above object, the technical solution adopted by the present invention is that a kind of prestressing force connects beams of concrete round steel pipe coagulation
Earth pillar node, as shown in Figure 1, 2, including concrete-filled circular steel tube column（1）And reinforced beam（2）, the two is by presstressed reinforcing steel group
It is integral；Concrete-filled circular steel tube column（1）With reinforced beam（2）It is cast-in-place；Concrete-filled circular steel tube column and armored concrete
Beam（2）Connected using presstressed reinforcing steel；Concrete-filled circular steel tube column（1）With reinforced beam（2）Duct is left in junction, in duct
Middle built-in metal bellows（4）；Concrete filled steel tube welds annulate lamella with beam junction（5）, ring flat-plate（5）On have corresponding hole；
Channel-section steel（6）It is welded in round steel pipe.
The ring flat-plate（5）It is general steel plate, width is beam section height, and thickness is thickness of steel pipe.
The 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
Highly, the web of channel-section steel cut into round steel pipe identical radian, during to weld with round steel pipe completely attach to.
Presstressed reinforcing steel（3）The design principle of prestressing force size be：The friction shear resisting ability of junction should be ensured, again
Within the stress in presstressed reinforcing steel is remained at yield limit.
Can be used as deformed bar in the end ring flat-plate of side column（3）Bearing plate during tensioning.
Compared with prior art, the present invention has the advantages that.
It is fast using this node site operation speed, and the reliability of node connection can be ensured.This node is used
Ring flat-plate, can mitigate the weakening effect to bearing capacity when round steel pipe punches；The shearing resistance that can increase bean column node using channel-section steel is held
Carry power；Using deformed bar, by duct grouting, presstressed reinforcing steel is mutually bonded with concrete, alleviate anchorage transmission pre-
Stress, improves the performance of reinforced beam, and this brings huge economic benefit to the economy of China and social development,
Have 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：1st, concrete-filled circular steel tube column, 2, reinforced beam, 3, presstressed reinforcing steel, 4, metal bellows, 5, ring flat-plate,
6th, channel-section steel, 7, mortar.
Specific embodiment
The present invention is described in further detail below with reference to drawings and Examples.
As shown in figures 1 to 6.
Embodiment 1
Prestressing force connection beams of concrete concrete-filled circular steel tube column joint structure is as shown in Figure 1：
1st, concrete filled steel tube positioning
Steel core concrete column（1）Steel pipe carry out perforate treatment in strict accordance with drawing in steel construction processing factory；In round steel
Pipe concrete column（1）Ring flat-plate is welded using weld all around mode at upper tie-beam（5）And channel-section steel（6）；Steel core concrete column（1）Lifting is fixed
Position.
2nd, colligation beam reinforcement cages and deformed bar are fixed
Beam bottom mother plate is installed, in strict accordance with design drawing colligation beam reinforcement cages；One side side form is installed, by figure on side form
Metal bellows position line is marked in the presstressed reinforcing steel position that paper is given, and is welded bellows fixed support on beam stirrup successively,
Lay metal bellows（4）.
3rd, bonded prestressed tendon lashing
After bellows is fixed, anchor plate is installed in anchored end, presstressed reinforcing steel is penetrated into ripple from what anchored end was smoothed out
In pipe.Stretching end spills 0.8m, and the mouth of pipe is stoppered with cement bag paper, prevents cement mortar and curing water from flowing into, and leak outside partial prestressing
Reinforcing bar gummed paper is wrapped prevents moisture corrosion presstressed reinforcing steel.
4th, concreting
Pour concrete-filled circular steel tube column and reinforced beam." concrete engineering construction technique is shown in concreting method
Standard ".
5th, tension of prestressed tendon
Concrete strength reach design strength 85% after carry out the tensioning of presstressed reinforcing steel, tensioning uses symmetrical stretching mode,
The position of stretching force overlaps with duct center line.Using stress and stretch value dual control, stressing sequence is 0 → 10% to cable tensios control
σcon→100%σcon→103%σcon→ anchoring.
6th, duct grouting
Mortar is filled to duct within 48h after the completion of tensioning（7）, grouting is using 42.5R Portland cements, filling process
It is middle to keep continuous consistent.
7th, 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
In ring flat-plate（5）On, this ring flat-plate can as tension of prestressed tendon when bearing plate.
Claims (2)
1. a kind of prestressing force connects beams of concrete concrete-filled circular steel tube column node, it is characterised in that：The node is mixed including round steel pipe
Solidifying earth pillar (1), reinforced beam (2), presstressed reinforcing steel (3), ring flat-plate (5) and channel-section steel (6)；Concrete-filled circular steel tube column is mixed with reinforcing bar
Solidifying Tu Liang (2) is connected using presstressed reinforcing steel；Concrete-filled circular steel tube column (1) leaves duct with reinforced beam (2) junction,
Built-in metal bellows (4) in duct；Concrete-filled circular steel tube column welds annulate lamella (5), ring flat-plate with reinforced beam junction
(5) there is corresponding hole on；Channel-section steel (6) is welded in round steel pipe；Concrete-filled circular steel tube column (1) and reinforced beam (2) are existing
Pour, presstressed reinforcing steel (3) uses bonded prestressed tendon；Ring flat-plate (5) is general steel plate, and width is beam section height, thickness
It is thickness of steel pipe.
2. prestressing force according to claim 1 connects beams of concrete concrete-filled circular steel tube column node, it is characterised in that：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, the web of channel-section steel
Cut into round steel pipe identical radian, during to weld with round steel pipe completely attach to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149366.5A CN103924676B (en) | 2014-04-14 | 2014-04-14 | Prestressing force connects beams of concrete concrete-filled circular steel tube column node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149366.5A CN103924676B (en) | 2014-04-14 | 2014-04-14 | Prestressing force connects beams of concrete concrete-filled circular steel tube column node |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103924676A CN103924676A (en) | 2014-07-16 |
| CN103924676B true CN103924676B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410149366.5A Expired - Fee Related CN103924676B (en) | 2014-04-14 | 2014-04-14 | Prestressing force connects beams of concrete concrete-filled circular steel tube column node |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314005B (en) * | 2014-09-19 | 2016-11-30 | 中铁四局集团第五工程有限公司 | A kind of pre-buried positioning construction method of vertical multi beam prestress wire |
| CN104975652B (en) * | 2015-06-30 | 2017-03-29 | 中国矿业大学 | A kind of precast concrete docks attachment structure |
| CN113338491B (en) * | 2021-06-09 | 2022-04-05 | 中铁建工集团有限公司 | Assembled circular steel tube bundle corrugated plate combined wall column beam structure system |
| CN115648747B (en) * | 2022-10-14 | 2023-08-04 | 东南大学 | Iron-based shape memory alloy reinforced multilayer laminated glass beam and processing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4519368B2 (en) * | 2001-07-11 | 2010-08-04 | 日本コンクリート工業株式会社 | Concrete structure and construction method thereof |
| JP2004316322A (en) * | 2003-04-18 | 2004-11-11 | Takenaka Komuten Co Ltd | Construction method of column-beam skeleton by precast concrete member |
| 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 |
| CN101748804B (en) * | 2010-01-06 | 2011-12-07 | 哈尔滨工业大学深圳研究生院 | Node structure of concrete filled steel tube column and reinforced concrete beam and construction technology thereof |
| CN203174771U (en) * | 2012-12-27 | 2013-09-04 | 湖南顺天建设集团有限公司 | Annular plate node of steel pipe concrete column and bonded prestress steel bar concrete beam |
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Granted publication date: 20170616 Termination date: 20200414 |