CN103938729A - Node for connecting prefabricated concrete beam with round steel tube concrete column through unbonded prestressed ribs - Google Patents
Node for connecting prefabricated concrete beam with round steel tube concrete column through unbonded prestressed ribs Download PDFInfo
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- CN103938729A CN103938729A CN201410146688.4A CN201410146688A CN103938729A CN 103938729 A CN103938729 A CN 103938729A CN 201410146688 A CN201410146688 A CN 201410146688A CN 103938729 A CN103938729 A CN 103938729A
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- steel tube
- node
- concrete
- round steel
- tube column
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 64
- 239000010959 steel Substances 0.000 title claims abstract description 64
- 239000004567 concrete Substances 0.000 title claims abstract description 40
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims abstract description 6
- 210000002435 tendon Anatomy 0.000 claims description 17
- 239000011178 precast concrete Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- Rod-Shaped Construction Members (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides a node for connecting a prefabricated concrete beam with a round steel tube concrete column through unbonded prestressed ribs, and belongs to the technical field of building structures. The node comprises the round steel tube concrete column, the reinforced concrete beam, the unbonded prestressed ribs, an annular plate and channel steel. The round steel tube concrete column (1) and the reinforced concrete beam (2) are both prefabricated; the positions, corresponding to beam sections, of the reinforced concrete beam and of the round steel tube concrete column are provided with hole channels; metal corrugated tubes (4) are pre-buried in the hole channels; the portion, connected with the reinforced concrete beam (2), of the round steel tube concrete column (1) is provided with the annular plate in a welded mode; the channel steel (6) is welded to a round steel tube; the unbonded prestressed ribs (3) penetrate through the metal corrugated tubes (4) and are tensioned so that the beam and the column can be connected into a whole. The construction speed is high, the onsite welding process is needless, reliability of node connection can be guaranteed, good anti-seismic performance is achieved, the node connection mode can be used for a side column node in a structure and can also be used for a middle column node and application prospects are wide.
Description
Technical field
The present invention relates to prestressing without bondn and connects precast concrete beam concrete-filled circular steel tube column node, belongs 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, meet the industrial requirement of 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, obtain 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, complex structure mostly, 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, a kind of novel on-the-spot simple and fast of installing that has of research and development, less demanding to operating personnel's technology and construction environment, connect safe and reliable concrete-filled circular steel tube column and girder connection form, seem very necessary.
Unbonded prestressing tendon is the special presstressed reinforcing steel with anticorrosion separation layer and oversheath, and it has easy construction, low for equipment requirements, loss of prestress is little, resistance to corrosion is strong, antifatigue and the advantage such as anti-seismic performance is good.In operational phase, presstressed reinforcing steel, in elastic state, makes structure have very strong automatic recovery ability, and permanent set is little, has good anti-seismic performance.Therefore be widely used in building structure.
Summary of the invention
Object of the present invention with proposed a kind of prestressing without bondn and be connected precast concrete beam concrete-filled circular steel tube column node, ensureing under the prerequisite that node connects effectively, power transmission is clear and definite, by improving precast reinforced concrete beam and concrete-filled circular steel tube column node connected mode, adopt unbonded prestressing tendon to assemble, reduced difficulty of construction, accelerated construction speed; Speed of application of the present invention is fast, does not need On-site Welding Technology, and can ensure the reliability that node connects, and has good anti-seismic performance, and this node connected mode both can, for the side column node in structure, also can, for king post joint, have a extensive future.
For achieving the above object, the technical solution used in the present invention is that binding prestress connects precast concrete beam concrete-filled circular steel tube column node, as shown in Figure 1, 2, this node comprises concrete-filled circular steel tube column (1) and precast reinforced concrete beam (2), and the two forms entirety by unbonded prestressing tendon; Particularly concrete-filled circular steel tube column (1) is prefabricated with reinforced concrete beam (2); The position of the corresponding beam section of reinforced concrete beam, concrete-filled circular steel tube column is stayed and is established duct, and in duct built-in metal bellows (4); Upper and reinforced concrete beam (2) the junction welding ring flat-plate (5) at concrete-filled circular steel tube column (1), ring flat-plate has corresponding hole on (5); Channel-section steel (6) is welded in round steel pipe; After in metal bellows (4), wear unbonded prestressing tendon (3), stretch-draw unbonded prestressing tendon (3), thereby by beam column composition entirety.
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 when contacts completely with round steel pipe.
The design principles of the prestressing force size of unbonded prestressing tendon (3) is: should ensure the friction shear resisting ability of junction, make again the stress in presstressed reinforcing steel remain in yield limit.
Bearing plate in the time that the end of side column ring flat-plate can be used as no-cohesive prestressed reinforcement (3) stretch-draw.
Compared with prior art, the present invention has following useful feature.
Adopt this node site operation speed fast, and can ensure the reliability that node connects.This node adopts ring flat-plate, the weakening effect to bearing capacity can alleviate round steel pipe and punch time; Adopt channel-section steel can increase the shear-carrying capacity of bean column node; Adopt no-cohesive prestressed reinforcement, loss of prestress is little, anti-fatigue performance is good, presstressed reinforcing steel is in elastic state, make structure have very strong automatic recovery ability, permanent set is little, has good anti-seismic performance, this brings huge economic benefit to economy and the social development of China, has a extensive future.
Brief description of the drawings
Fig. 1 is middle node front elevation view
Fig. 2 is mid-side node front elevation view
Fig. 3 is the sectional view of Fig. 1 along A-A
Fig. 4 is the sectional view of Fig. 2 along B-B
Fig. 5 is the sectional view of Fig. 2 along C-C
Fig. 6 is the sectional view of Fig. 1 along D-D
In figure, 1, concrete-filled circular steel tube column, 2, precast reinforced concrete beam, 3, unbonded prestressing tendon, 4, metal bellows, 5, ring flat-plate, 6, channel-section steel.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Fig. 1-6.
Embodiment 1
Prestressing without bondn connects precast concrete beam concrete-filled circular steel tube column joint structure as shown in Figure 1:
1, the making of concrete filled steel tube and reinforced concrete beam
In factory in strict accordance with related specifications and drawing making concrete-filled circular steel tube column (1) and reinforced concrete beam (2), when prefabricated, all reserve four corresponding ducts, duct internal diameter is than the large 10mm of unbonded prestressing tendon diameter, built-in metal bellows (4) in duct, 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).
2, the assembling of bean column node
Behind concrete-filled circular steel tube column (1) location, make reinforced concrete beam (2) lifting location by support.
3, stretch-draw unbonded prestressing tendon
In bellows (4), wear unbonded prestressing tendon (3), stretch-draw unbonded prestressing tendon (3).Stretch-draw adopts symmetrical stretching mode, and stretch-draw line of action of force overlaps with duct center line.Stretch-draw control adopts stress and stretch value dual control, and stressing sequence is 0 → 10% σ
con→ 100% σ
con→ 103% σ
con→ anchoring.
4, 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 unbonded prestressing tendon upper, bearing plate when this ring flat-plate can be used as unbonded prestressing tendon stretch-draw.
Claims (4)
1. prestressing without bondn connects a precast 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), unbonded prestressing tendon (3), ring flat-plate (5), channel-section steel (6); Particularly, concrete-filled circular steel tube column (1) is prefabricated with reinforced concrete beam (2); The position of the corresponding beam section of reinforced concrete beam, concrete-filled circular steel tube column is stayed and is established duct, and in duct built-in metal bellows (4); Upper and reinforced concrete beam (2) the junction welding ring flat-plate (5) at concrete-filled circular steel tube column (1), ring flat-plate has corresponding hole on (5); Channel-section steel (6) is welded in round steel pipe; After in metal bellows (4), wear unbonded prestressing tendon (3), stretch-draw unbonded prestressing tendon (3) thus by beam column composition entirety.
2. prestressing without bondn according to claim 1 connects precast concrete beam concrete-filled circular steel tube column node, it is characterized in that: node connects employing unbonded prestressing tendon (3).
3. prestressing without bondn according to claim 1 connects precast 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 without bondn according to claim 1 connects precast concrete beam concrete-filled circular steel tube column node, it is characterized in that: described 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 when contacts completely with round steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410146688.4A CN103938729B (en) | 2014-04-14 | 2014-04-14 | Node for connecting prefabricated concrete beam with round steel tube concrete column through unbonded prestressed ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410146688.4A CN103938729B (en) | 2014-04-14 | 2014-04-14 | Node for connecting prefabricated concrete beam with round steel tube concrete column through unbonded prestressed ribs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103938729A true CN103938729A (en) | 2014-07-23 |
| CN103938729B CN103938729B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410146688.4A Active CN103938729B (en) | 2014-04-14 | 2014-04-14 | Node for connecting prefabricated concrete beam with round steel tube concrete column through unbonded prestressed ribs |
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| CN (1) | CN103938729B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106978911A (en) * | 2017-05-12 | 2017-07-25 | 东南大学 | The structure of attached assembling type node power consumption frame strengthening outside a kind of existing framework |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08113984A (en) * | 1994-10-14 | 1996-05-07 | Kajima Corp | Joint structure of steel pipe reinforced concrete column and prestressed beam |
| CN101029503A (en) * | 2007-04-06 | 2007-09-05 | 北京工业大学 | Beam and pile assembled node of precast and prestressed concrete structure |
| CN101798849B (en) * | 2010-03-26 | 2011-07-20 | 东南大学 | Node connection device for self-centering prestressed concrete frame |
| CN103132602A (en) * | 2013-02-27 | 2013-06-05 | 同济大学 | Self-resetting frame joint |
| 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 |
-
2014
- 2014-04-14 CN CN201410146688.4A patent/CN103938729B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08113984A (en) * | 1994-10-14 | 1996-05-07 | Kajima Corp | Joint structure of steel pipe reinforced concrete column and prestressed beam |
| CN101029503A (en) * | 2007-04-06 | 2007-09-05 | 北京工业大学 | Beam and pile assembled node of precast and prestressed concrete structure |
| CN101798849B (en) * | 2010-03-26 | 2011-07-20 | 东南大学 | Node connection device for self-centering prestressed concrete frame |
| 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 |
| CN103132602A (en) * | 2013-02-27 | 2013-06-05 | 同济大学 | Self-resetting frame joint |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106978911A (en) * | 2017-05-12 | 2017-07-25 | 东南大学 | The structure of attached assembling type node power consumption frame strengthening outside a kind of existing framework |
| CN106978911B (en) * | 2017-05-12 | 2022-08-26 | 东南大学 | Existing frame attaches reinforced structure of assembled node power consumption frame outward |
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| Publication number | Publication date |
|---|---|
| CN103938729B (en) | 2017-05-17 |
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Effective date of registration: 20210928 Address after: 226000 No.78 Nanjing Road, Sijia Town, Haimen City, Nantong City, Jiangsu Province Patentee after: Gaorun New Material Science and Technology (Nantong) Co.,Ltd. Address before: Room 1424, Floor 4, Peony Pioneer Building, No. 2 Garden Road, Haidian District, Beijing, 100191 Patentee before: Beijing Zhonglian Technology Service Co.,Ltd. |
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Effective date of registration: 20221221 Address after: Room 307-1, Urban Energy Empowerment Center, No. 817 Bingsheng Road, Guangrao Economic Development Zone, Guangrao County, Dongying City, Shandong Province, 257,000 Patentee after: Shandong Wanzhong Weiye New Material Technology Co.,Ltd. Address before: 226000 No.78 Nanjing Road, Sijia Town, Haimen City, Nantong City, Jiangsu Province Patentee before: Gaorun New Material Science and Technology (Nantong) Co.,Ltd. |
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Effective date of registration: 20230627 Address after: C Creation Space A206, Floor 2, No. 7, Nanyou Road, Jiangjun Avenue, Jiangning Development Zone, Jiangning District, Nanjing, Jiangsu 211100 Patentee after: Nanjing Yiweijun Technology Co.,Ltd. Address before: Room 307-1, Urban Energy Empowerment Center, No. 817 Bingsheng Road, Guangrao Economic Development Zone, Guangrao County, Dongying City, Shandong Province, 257,000 Patentee before: Shandong Wanzhong Weiye New Material Technology Co.,Ltd. |