CN103924677A - Concrete beam and square-rectangular concrete-filled steel tube column combining joint employing unbonded prestressed and common reinforcement for connection - Google Patents
Concrete beam and square-rectangular concrete-filled steel tube column combining joint employing unbonded prestressed and common reinforcement for connection Download PDFInfo
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- CN103924677A CN103924677A CN201410149367.XA CN201410149367A CN103924677A CN 103924677 A CN103924677 A CN 103924677A CN 201410149367 A CN201410149367 A CN 201410149367A CN 103924677 A CN103924677 A CN 103924677A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 78
- 239000010959 steel Substances 0.000 title claims abstract description 78
- 239000004567 concrete Substances 0.000 title claims abstract description 53
- 230000002787 reinforcement Effects 0.000 title claims description 7
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 15
- 210000002435 tendon Anatomy 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000002929 anti-fatigue Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000149 penetrating 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
一种无粘结预应力与普通钢筋连接混凝土梁方矩形钢管混凝土柱组合节点，属于建筑结构技术领域。包括方矩形钢管混凝土柱、钢筋混凝土梁、无粘结预应力筋、钢板、槽钢。方矩形钢管混凝土柱与钢筋混凝土梁均为现浇；方矩形钢管混凝土柱与钢筋混凝土梁采用无粘结预应力筋、普通钢筋连接；方矩形钢管混凝土柱与钢筋混凝土梁连接截面处留有孔道，在孔道中预埋金属波纹管；方矩形钢管混凝土与梁连接截面处焊接有钢板，钢板上有对应的孔；槽钢焊接在方矩形钢管上。本发明施工速度快，不需要现场焊接工艺，而且可以保证节点连接的可靠性，具有很好的抗震性能，此节点连接方式既可以用于结构中的边柱节点，也可以用于中柱节点，应用前景广阔。
The invention relates to a composite node of square rectangular concrete-filled steel pipe columns of concrete beams connected by unbonded prestress and ordinary steel bars, which belongs to the technical field of building structures. Including square and rectangular steel pipe concrete columns, reinforced concrete beams, unbonded prestressed tendons, steel plates, and channel steel. Both square and rectangular concrete-filled steel tube columns and reinforced concrete beams are cast-in-situ; square and rectangular steel-filled steel tube concrete columns and reinforced concrete beams are connected by unbonded prestressed tendons and ordinary steel bars; channels are left at the connecting section of square and rectangular steel-filled steel tube concrete columns and reinforced concrete beams , Pre-embed metal bellows in the channel; steel plates are welded at the connection section between square and rectangular steel pipe concrete and beams, and there are corresponding holes on the steel plates; channel steel is welded on square and rectangular steel pipes. The invention has fast construction speed, does not require on-site welding process, can ensure the reliability of node connection, and has good seismic performance. This node connection method can be used for both side column nodes and center column nodes in the structure , the application prospect is broad.
Description
Technical field
The present invention relates to prestressing without bondn and be connected concrete beam square steel tube concrete column combination node with plain bars, 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, 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 encased structures, also more and more to the research of encased structures.
The connected node of square steel tube concrete 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, and the construction of node and design difficulty often become the bottleneck factor that the novel superior structural of restriction is applied.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 square steel tube concrete 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
The object of the invention is to ensureing under the prerequisite that node connects effectively, power transmission is clear and definite, by improving reinforced concrete beam and square steel tube concrete column reinforcing joint 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 prestressing without bondn is connected concrete beam square steel tube concrete column combination node with plain bars, as shown in Figure 1, 2, this node comprises square steel tube concrete column (1) and reinforced concrete beam (2), and the two forms entirety by unbonded prestressing tendon (3) and plain bars (4); Square steel tube concrete column (1) is cast-in-place with reinforced concrete beam (2); Square steel tube concrete column adopts unbonded prestressing tendon (3) to be connected with plain bars (4) with reinforced concrete beam (2); On the cross section that square steel tube concrete column (1) is connected with reinforced concrete beam (2), leave duct, built-in metal bellows (4) in duct; Square steel tube concrete is connected section and is welded with steel plate (5) with beam, steel plate has corresponding hole on (5); Channel-section steel (6) is welded on square steel tube.
Described steel 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.
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 beneficial effect.
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 elevation
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
Wherein, the 1st, square steel tube concrete column, the 2nd, cast-in-situ steel reinforced concrete beam, the 3rd, unbonded prestressing tendon, the 4th, plain bars, the 5th, steel plate, the 6th, channel-section steel, the 7th, metal bellows.
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 is connected concrete beam square steel tube concrete column combination joint structure as shown in Figure 1 with plain bars:
1, square steel tube concrete location
The steel pipe of square steel tube concrete column (1) carries out perforate processing in strict accordance with drawing in steel work processing factory; Adopt weld all around mode welding steel (5) and channel-section steel (6) at square steel tube concrete column (1) tie-beam section; Square steel tube 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, unbonded prestressing tendon lashing
After bellows fixes, install anchor plate in anchored end, 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 gummed paper that leaks outside wraps and prevents moisture corrosion presstressed reinforcing steel.
4, concreting
Build square steel tube concrete 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 control adopts stress and stretch value dual control, and stressing sequence is 0 → 10% σ
con→ 100% σ
con→ 103% σ
con→ anchoring.
6, 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 steel plate (5) by unbonded prestressing tendon upper, bearing plate when this ring flat-plate can be used as unbonded prestressing tendon stretch-draw.
Claims (5)
1. a prestressing without bondn is connected concrete beam square steel tube concrete column combination node with plain bars, it is characterized in that: this node comprises square steel tube concrete column (1) and reinforced concrete beam (2), the two forms entirety by unbonded prestressing tendon (3) and plain bars (4); Square steel tube concrete column (1) is cast-in-place with reinforced concrete beam (2); Square steel tube concrete column adopts unbonded prestressing tendon (3) to be connected with plain bars (4) with reinforced concrete beam (2); On the cross section that square steel tube concrete column (1) is connected with reinforced concrete beam (2), leave duct, built-in metal bellows (4) in duct; Square steel tube concrete is connected section and is welded with steel plate (5) with beam, steel plate has corresponding hole on (5); Channel-section steel (6) is welded on square steel tube.
2. a kind of prestressing without bondn according to claim 1 is connected concrete beam square steel tube concrete column combination node with plain bars, it is characterized in that: steel plate (5) is general steel plate, and width is beam section height, and thickness is thickness of steel pipe.
3. a kind of prestressing without bondn according to claim 1 is connected concrete beam square steel tube concrete column combination node with plain bars, it is characterized in that: described channel-section steel (6) web height is beam section width, flange width is beam section height, and channel-section steel length is beam section height.
4. a kind of prestressing without bondn according to claim 1 is connected concrete beam square steel tube concrete column combination node with plain bars, it is characterized in that: 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.
5. a kind of prestressing without bondn according to claim 1 is connected concrete beam square steel tube concrete column combination node with plain bars, it is characterized in that: the 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149367.XA CN103924677B (en) | 2014-04-14 | 2014-04-14 | Prestressing without bondn is connected beams of concrete square steel tube concrete column combination node with regular reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149367.XA CN103924677B (en) | 2014-04-14 | 2014-04-14 | Prestressing without bondn is connected beams of concrete square steel tube concrete column combination node with regular reinforcement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103924677A true CN103924677A (en) | 2014-07-16 |
| CN103924677B CN103924677B (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410149367.XA Active CN103924677B (en) | 2014-04-14 | 2014-04-14 | Prestressing without bondn is connected beams of concrete square steel tube concrete column combination node with regular reinforcement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018233440A1 (en) * | 2017-06-22 | 2018-12-27 | 中国建筑股份有限公司 | Node connection structure for prestressed prefabricated concrete frame and construction method thereof |
| CN109235639A (en) * | 2018-11-15 | 2019-01-18 | 福建工程学院 | Prestressing without bondn assembling type node and construction method with energy-consuming device |
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| CN2784490Y (en) * | 2005-04-22 | 2006-05-31 | 北京工业大学 | Prestress connection node for beam column of assembled concrete frame structure |
| 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 |
| CN101798849A (en) * | 2010-03-26 | 2010-08-11 | 东南大学 | Node connection device for self-centering prestressed concrete frame |
| JP2013079508A (en) * | 2011-10-03 | 2013-05-02 | Nippon Steel & Sumitomo Metal | Beam-column connection of rigid-frame |
| CN103132602A (en) * | 2013-02-27 | 2013-06-05 | 同济大学 | Self-resetting frame joint |
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2014
- 2014-04-14 CN CN201410149367.XA patent/CN103924677B/en active Active
Patent Citations (6)
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| CN2623764Y (en) * | 2003-05-06 | 2004-07-07 | 屈培元 | Step shaped foam glass thermal insulation walltile |
| CN2784490Y (en) * | 2005-04-22 | 2006-05-31 | 北京工业大学 | Prestress connection node for beam column of assembled concrete frame structure |
| 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 |
| CN101798849A (en) * | 2010-03-26 | 2010-08-11 | 东南大学 | Node connection device for self-centering prestressed concrete frame |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018233440A1 (en) * | 2017-06-22 | 2018-12-27 | 中国建筑股份有限公司 | Node connection structure for prestressed prefabricated concrete frame and construction method thereof |
| US10865557B2 (en) | 2017-06-22 | 2020-12-15 | China State Construction Engineering Corporation Limited | Prestressed assembled concrete frame-joint connecting structure and constructing method thereof |
| CN109235639A (en) * | 2018-11-15 | 2019-01-18 | 福建工程学院 | Prestressing without bondn assembling type node and construction method with energy-consuming device |
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| Publication number | Publication date |
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| CN103924677B (en) | 2016-07-27 |
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Effective date of registration: 20240615 Address after: Room 1501, Building 11, Huicai Yujingwan New Residence, No. 99, Section 2, Xiangfu East Road, Dongjing Street, Yuhua District, Changsha City, Hunan Province, 410000 Patentee after: Hunan Yongdao Engineering Project Management Co.,Ltd. Country or region after: China 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. Country or region before: China |
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