CN103924676A - Prestressed connecting joint for concrete beam and circular steel pipe concrete column - Google Patents
Prestressed connecting joint for concrete beam and circular steel pipe concrete column Download PDFInfo
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- CN103924676A CN103924676A CN201410149366.5A CN201410149366A CN103924676A CN 103924676 A CN103924676 A CN 103924676A CN 201410149366 A CN201410149366 A CN 201410149366A CN 103924676 A CN103924676 A CN 103924676A
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Abstract
The invention discloses a prestressed connecting joint for a concrete beam and a circular steel pipe concrete column and belongs to the technical field of building structure. The prestressed connecting joint comprises a circular steel pipe concrete column, a reinforced concrete beam, a prestressed tendon, a ring plate and channel steel. The circular steel pipe concrete column and the reinforced concrete beam are cast in situ and are connected by the prestressed tendon, a runner is reserved at the connected position of the circular steel pipe concrete column and the reinforced concrete beam, and metal bellows are buried in the runner. The ring plate is welded at the connected position of the circular steel pipe concrete column and the reinforced concrete beam and is provided with corresponding holes. The channel steel is welded on a circular steel pipe. The prestressed connecting joint for the concrete beam and the circular steel pipe concrete column is fast in construction and wide in application range, and shear resistance of the connecting joint is effectively improved, and connecting performance is improved.
Description
Technical field
The present invention relates to prestressing force and connect concrete beam concrete-filled circular steel tube column node, belong to building structure technology field.
Background technology
In construction work, apply the concrete filled steel tube history of existing more than 100 year.The attention that bearing capacity is high owing to having for concrete filled steel tube, plasticity and the advantage such as good toughness, good economical benefit and easy construction are subject to engineering circles.Concrete filled steel tube can adapt to modern project structure to greatly across, towering, heavy duty development with bear the needs of mal-condition, the industrial requirement that meets Modern Construction Technology, thereby be just more and more widely used in individual layer and multi storied industrial factory building post, equipment frame post, pier, stake, space structures, commercial square, multistory office and house, high level and super highrise building and bridge construction, obtained good economic effect and architectural effect.Especially in recent years, undergoing an unusual development rapidly of China's concrete filled steel tube structure, also more and more to the research of concrete filled steel tube structure.
The connected node of concrete-filled circular steel tube column and beam is one of key issue while carrying out concrete filled steel tube engineering design, the validity of its connected node directly affects integrally-built rigidity, stability and supporting capacity, also has influence on site operation difficulty and construction speed.Existing concrete filled steel tube joint form is various, most complex structure, and difficulty of construction is large, and power transmission is indefinite, and node computation model is indefinite, and China does not also have a set of more complete node theory of computation and method for designing so far.Therefore, research and develop a kind of novel, connect safe and reliable concrete-filled circular steel tube column and girder connection form, seem very necessary.
This construction method of bonded prestress, by duct grouting, bonds presstressed reinforcing steel and concrete mutually, has alleviated ground tackle and has transmitted prestressing force effect, has improved anchorage reliability and durability, is widely used in main supporting member or structure.
Summary of the invention
The object of the present invention is to provide a kind of prestressing force to connect concrete beam concrete-filled circular steel tube column node, guaranteeing under the prerequisite that node connects effectively, power transmission is clear and definite, by having improved reinforced concrete beam and concrete-filled circular steel tube column node connected mode, adopt presstressed reinforcing steel to assemble, reduce difficulty of construction, accelerated construction speed.The shear-carrying capacity that speed of application of the present invention is fast, can effectively increase node, strengthens its switching performance, has a extensive future.
For achieving the above object, the technical solution used in the present invention is that a kind of prestressing force connects concrete beam concrete-filled circular steel tube column node, as shown in Figure 1, 2, comprises concrete-filled circular steel tube column (1) and reinforced concrete beam (2), and the two consists of whole presstressed reinforcing steel; Concrete-filled circular steel tube column (1) is cast-in-place with reinforced concrete beam (2); Concrete-filled circular steel tube column adopts presstressed reinforcing steel to be connected with reinforced concrete beam (2); Concrete-filled circular steel tube column (1) leaves duct, built-in metal bellows (4) in duct with reinforced concrete beam (2) junction; Concrete filled steel tube and beam junction are welded with ring flat-plate (5), and ring flat-plate has corresponding hole on (5); Channel-section steel (6) is welded in round steel pipe.
Described ring flat-plate (5) is general steel plate, and width is beam section height, and thickness is thickness of steel pipe.
Described 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, and the web of channel-section steel cuts into the radian identical with round steel pipe, so that welding contacts completely with round steel pipe time.
The design principles of the prestressing force size of presstressed reinforcing steel (3) is: should guarantee the friction shear resisting ability of junction, make again the stress in presstressed reinforcing steel remain in yield limit.
Bearing plate when the end of side column ring flat-plate can be used as prestressed reinforcement (3) stretch-draw.
Compared with prior art, the present invention has following beneficial effect.
Adopt this node site operation speed fast, and can guarantee the reliability that node connects.This node adopts ring flat-plate, the weakening effect to bearing capacity in the time of can alleviating round steel pipe and punch; Adopt channel-section steel can increase the shear-carrying capacity of bean column node; Adopt prestressed reinforcement, by duct grouting, presstressed reinforcing steel and concrete are bondd mutually, alleviate ground tackle and transmitted prestressing force effect, improved the performance of reinforced concrete beam, the economy of Zhe Gei China and social development bring huge economic benefit, have a extensive future.
Accompanying drawing explanation
Fig. 1 is middle node front elevation view
Fig. 2 is mid-side node front elevation view
Fig. 3 is that Fig. 1 is along the sectional view of A-A
Fig. 4 is that Fig. 2 is along the sectional view of B-B
Fig. 5 is that Fig. 2 is along the sectional view of C-C
Fig. 6 is that Fig. 1 is along the sectional view of D-D
In figure: 1, concrete-filled circular steel tube column, 2, reinforced concrete beam, 3, presstressed reinforcing steel, 4, metal bellows, 5, ring flat-plate, 6, channel-section steel, 7, mortar.
The specific embodiment
Below with reference to drawings and Examples, the present invention is described in further detail.
As shown in Fig. 1-6.
Embodiment 1
Prestressing force connects concrete beam concrete-filled circular steel tube column joint structure as shown in Figure 1:
1, concrete filled steel tube location
The steel pipe of steel core concrete column (1) carries out perforate processing in strict accordance with drawing in steel work processing factory; At the upper tie-beam of concrete-filled circular steel tube column (1), place adopts weld all around mode to weld ring flat-plate (5) and channel-section steel (6); Steel core concrete column (1) lifting location.
2, colligation beam reinforcement cages and prestressed reinforcement are fixed
Install beam bottom mother plate, in strict accordance with design drawing colligation beam reinforcement cages; Install side form on one side, metal bellows position line is marked in the presstressed reinforcing steel position providing by drawing on side form, has welded successively bellows fixed support on beam stirrup, lays metal bellows (4).
3, bonded prestressed tendon lashing
After bellows fixes, in anchored end, install anchor plate, by presstressed reinforcing steel from smooth-going the penetrating in bellows of anchored end.Stretching end spills 0.8m, and mouth of pipe cement bag paper jam-pack prevents that cement paste and curing water from flowing into, and the partial prestressing reinforcing bar that leaks outside wraps and prevents moisture corrosion presstressed reinforcing steel with gummed paper.
4, concreting
Build concrete-filled circular steel tube column and reinforced concrete beam." concrete engineering construction technological standards " is shown in concreting method.
5, tension of prestressed tendon
Concrete strength reach design strength 85% after carry out the stretch-draw of presstressed reinforcing steel, stretch-draw adopts symmetrical stretching mode, stretch-draw line of action of force overlaps with duct center line.Stretch-draw is controlled and is adopted stress and stretch value dual control, and stressing sequence is 0 → 10% σ
con→ 100% σ
con→ 103% σ
con→ anchoring.
6, duct grouting
After stretch-draw completes, within 48h, mortar (7) is filled with in duct, grouting adopts 42.5R Portland cement, keeps continuously consistent in filling process.
7, cutting
After stretch-draw finishes, adopt portable grinder cutting machine will expose presstressed reinforcing steel excision, its protruded length should not be less than 1.5 times of presstressed reinforcing steel diameter, and is not less than 30mm.
Embodiment 2
When for side column node, see Fig. 2, other measure, with embodiment 1, just in the end of side column, is welded on ring flat-plate (5) by presstressed reinforcing steel upper, bearing plate when this ring flat-plate can be used as tension of prestressed tendon.
Claims (4)
1. prestressing force connects a concrete beam concrete-filled circular steel tube column node, it is characterized in that: this node comprises concrete-filled circular steel tube column (1), reinforced concrete beam (2), presstressed reinforcing steel (3), ring flat-plate (5) and channel-section steel (6); Concrete-filled circular steel tube column (1) is cast-in-place with reinforced concrete beam (2); Concrete-filled circular steel tube column adopts presstressed reinforcing steel to be connected with reinforced concrete beam (2); Concrete-filled circular steel tube column (1) leaves duct, built-in metal bellows (4) in duct with reinforced concrete beam (2) junction; Concrete filled steel tube and beam junction are welded with ring flat-plate (5), and ring flat-plate has corresponding hole on (5); Channel-section steel (6) is welded in round steel pipe.
2. prestressing force according to claim 1 connects concrete beam concrete-filled circular steel tube column node, it is characterized in that: steel core concrete column (1) and reinforced concrete beam (2) are for cast-in-place, and what presstressed reinforcing steel (3) adopted is bonded prestressed tendon.
3. prestressing force according to claim 1 connects concrete beam concrete-filled circular steel tube column node, it is characterized in that: ring flat-plate (5) is general steel plate, and width is beam section height, and thickness is thickness of steel pipe.
4. prestressing force according to claim 1 connects concrete beam concrete-filled circular steel tube column node, it is characterized in that: channel-section steel (6) web height is beam section width, flange width is beam section height, channel-section steel length is beam section height, the web of channel-section steel cuts into the radian identical with round steel pipe, so that welding contacts completely with round steel pipe time.
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 |
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| Publication Number | Publication Date |
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| CN103924676A true CN103924676A (en) | 2014-07-16 |
| CN103924676B CN103924676B (en) | 2017-06-16 |
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| 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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314005A (en) * | 2014-09-19 | 2015-01-28 | 中铁四局集团第五工程有限公司 | Embedding positioning construction method for vertical multi-bundle pre-stressed steel strand |
| CN104975652A (en) * | 2015-06-30 | 2015-10-14 | 中国矿业大学 | Butt joint connecting structure of precast concrete components |
| CN113338491A (en) * | 2021-06-09 | 2021-09-03 | 中铁建工集团有限公司 | Assembled circular steel tube bundle corrugated plate combined wall column beam structure system |
| CN115648747A (en) * | 2022-10-14 | 2023-01-31 | 东南大学 | Iron-based shape memory alloy reinforced multilayer laminated glass beam and processing method |
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| JP2004316322A (en) * | 2003-04-18 | 2004-11-11 | Takenaka Komuten Co Ltd | Construction method of column-beam skeleton by precast concrete member |
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| CN101748804A (en) * | 2010-01-06 | 2010-06-23 | 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 |
| 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 |
| 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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2014
- 2014-04-14 CN CN201410149366.5A patent/CN103924676B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN101550728A (en) * | 2009-04-30 | 2009-10-07 | 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 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314005A (en) * | 2014-09-19 | 2015-01-28 | 中铁四局集团第五工程有限公司 | Embedding positioning construction method for vertical multi-bundle pre-stressed steel strand |
| 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 |
| CN104975652A (en) * | 2015-06-30 | 2015-10-14 | 中国矿业大学 | Butt joint connecting structure of precast concrete components |
| CN113338491A (en) * | 2021-06-09 | 2021-09-03 | 中铁建工集团有限公司 | Assembled circular steel tube bundle corrugated plate combined wall column beam structure system |
| 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 |
| CN115648747A (en) * | 2022-10-14 | 2023-01-31 | 东南大学 | Iron-based shape memory alloy reinforced multilayer laminated glass beam and processing method |
| 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 |
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| Publication number | Publication date |
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| CN103924676B (en) | 2017-06-16 |
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Granted publication date: 20170616 Termination date: 20200414 |