CN103924684B - Soap-free emulsion polymeization prestress connects beams of concrete square steel tube concrete column reinforcing joint - Google Patents
Soap-free emulsion polymeization prestress connects beams of concrete square steel tube concrete column reinforcing joint Download PDFInfo
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- CN103924684B CN103924684B CN201410151432.2A CN201410151432A CN103924684B CN 103924684 B CN103924684 B CN 103924684B CN 201410151432 A CN201410151432 A CN 201410151432A CN 103924684 B CN103924684 B CN 103924684B
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Abstract
A kind of soap-free emulsion polymeization prestress connects beams of concrete square steel tube concrete column reinforcing joint and belongs to building structure technology field. Comprise square steel tube coagulation earth pillar, reinforced beam, unbonded prestressing tendon, steel plate, channel-section steel. Square steel tube coagulation earth pillar and reinforced beam are cast-in-place; Square steel tube coagulation earth pillar adopts unbonded prestressing tendon to be connected with reinforced beam; Square steel tube coagulation earth pillar is connected section with reinforced beam and leaves duct, built-in metal corrugated tube in duct; Square steel tube concrete is connected section with beam and is welded with steel plate, and steel plate has corresponding hole; Channel-section steel is welded on square steel tube. Speed of application of the present invention is fast, it is not necessary to site welding technique, and can ensure the reliability that node connects to have good anti-seismic performance, and this node mode of connection both may be used for the side column node in structure, it is also possible to for king post joint, has a extensive future.
Description
Technical field
The present invention relates to soap-free emulsion polymeization prestress and connect beams of concrete square steel tube concrete column reinforcing joint, belong to building structure technology field.
Background technology
Construction work is applied the concrete filled steel tube history of existing more than 100 year. Concrete filled steel tube is subject to the attention of engineering circle owing to having the advantages such as bearing capacity height, plasticity and good toughness, good economical benefit and easy construction. Concrete filled steel tube can adapt to modern project structure to greatly across, towering, heavy duty development and the needs bearing mal-condition, meet the industrial requirement of modern construction technology, thus just more and more it is being widely used in individual layer and multi storied industrial factory building post, equipment frame post, pier, stake, space structure, commercial square, multilayer office building and house, high level and high-rise building and bridge structure, is being obtained good economical effectiveness and building effect. Wherein, concrete-filled circular steel tube column has done more research in China, has worked out corresponding code, have also been obtained more application in actual engineering. Square steel tube concrete is an important component part of whole concrete filled steel tube, and it is in status arranged side by side with concrete filled steel tube. Square steel tube concrete profile rule, is conducive to coordinating architectural design, is conducive to beam-to-column joint, has good application prospect.
One of key issue when the connection node of square steel tube coagulation earth pillar and beam carries out concrete filled steel tube engineering design, its validity connecting node directly affects integrally-built rigidity, stability and supporting capacity, also has influence on site operation difficulty and construction speed. Existing Concrete-filled tubular connections 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, research and development one is novel has in-site installation simple and fast, and operator's technology and construction environment is less demanding, connects safe and reliable square steel tube coagulation earth pillar and beam joint form, seems very necessary.
Unbonded prestressing tendon is the anticorrosion sealing coat of band and the special presstressed reinforcing steel of 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 the use stage, presstressed reinforcing steel is in elastic state so that structure has very strong automatic recovery ability, and residual set is little, has good anti-seismic performance. Therefore building structure it is widely used in.
Summary of the invention
It is an object of the invention to ensureing under the prerequisite that node connects effectively, power transmission is clear and definite, by improving reinforced beam and square steel tube concrete column reinforcing joint mode of connection, adopt unbonded prestressing tendon to assemble, reduce difficulty of construction, accelerate construction speed. Speed of application of the present invention is fast, it is not necessary to site welding technique, and can ensure the reliability that node connects to have good anti-seismic performance, and this node mode of connection both may be used for the side column node in structure, it is also possible to for king post joint, has a extensive future.
For achieving the above object, the technical solution used in the present invention is that soap-free emulsion polymeization prestress connects beams of concrete square steel tube concrete column reinforcing joint, as shown in Figure 1, 2, this node comprises square steel tube coagulation earth pillar (1) and reinforced beam (2), and the two forms entirety by unbonded prestressing tendon (3). Square steel tube coagulation earth pillar (1) and reinforced beam (2) are cast-in-place; Square steel tube coagulation earth pillar adopts unbonded prestressing tendon (3) to be connected with reinforced beam (2); Duct is left, built-in metal corrugated tube (4) in duct in the cross section that square steel tube coagulation earth pillar (1) is connected with reinforced beam (2); Square steel tube concrete is connected section and is welded with steel plate (5) with beam, and steel plate (5) has corresponding hole; 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 principle of design of the prestress size of unbonded prestressing tendon (3) is: the friction shear resisting ability that should ensure junction, within making the stress in presstressed reinforcing steel remain at yield strength again.
End loops plate at side column can as bearing plate during no-cohesive prestressed reinforcement (3) stretch-draw.
Compared with prior art, the present invention has following useful effect.
Adopt this kind of node site operation speed fast, and the reliability that node connects can be ensured. This kind of node adopts ring plate, it is possible to alleviate the weakening effect to bearing capacity when round steel pipe opens hole; 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, making structure have very strong automatic recovery ability, residual set is little, has good anti-seismic performance, this brings huge economic benefit to the economy of China and social development, has a extensive future.
Accompanying drawing explanation
Fig. 1 is interior joint front elevation view
Fig. 2 is limit 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, square steel tube coagulation earth pillar, 2, reinforced beam, 3, unbonded prestressing tendon, 4, metallic bellows, 5, steel plate, 6, channel-section steel.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in figures 1 to 6.
Embodiment 1
Prestress connects beams of concrete square steel tube concrete column reinforcing joint and constructs as shown in Figure 1:
1, square steel tube concrete location
The steel pipe of square steel tube coagulation earth pillar (1) carries out perforate process in strict accordance with drawing in steel construction source mill; Connect beam section place at square steel tube coagulation earth pillar (1) and adopt weld all around mode welding ring plate (5) and channel-section steel (6); Square steel tube coagulation earth pillar (1) lifting location.
2, colligation beam Framework Of Steel Reinforcement and deformed bar are fixed
Install beam bottom mother plate, in strict accordance with design paper colligation beam Framework Of Steel Reinforcement; Installing an avris mould, metallic bellows position line is marked in the presstressed reinforcing steel position provided by drawing on the mould of side, has welded the fixing support of corrugated tube successively, lay metallic bellows (4) on beam stirrup.
3, unbonded prestressing tendon lashing
Corrugated tube is fixed after well, installs anchor backing plate in anchored end, by presstressed reinforcing steel from smooth-going the wearing in corrugated tube of anchored end. Stretch-draw end spills 0.8m, and the mouth of pipe is tight with cement bag paper plug, prevents grout and curing water from flowing into, and outer leakage part deformed bar gummed paper wraps and prevents moisture corrosion presstressed reinforcing steel.
4, concrete placement
Build square steel tube coagulation earth pillar and reinforced beam. Concrete casting building method is shown in " concrete engineering construction technological standards ".
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, and the line of action of stretching force overlaps with duct medullary ray. Cable tensios control adopts stress and stretch value dual control, and stretch-draw program is 0 �� 10% ��con��100%��con��103%��con�� anchoring.
6, cut
After stretch-draw terminates, adopting portable sharpening machine 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 seeing Fig. 2 for during side column node, unbonded prestressing tendon, with embodiment 1, just in the end of side column, is welded on ring plate (5) by other measure, and this ring plate can as bearing plate during unbonded prestressing tendon stretch-draw.
Claims (3)
1. soap-free emulsion polymeization prestress connects beams of concrete square steel tube concrete column reinforcing joint, it is characterised in that: this node comprises square steel tube coagulation earth pillar (1), reinforced beam (2), unbonded prestressing tendon (3), steel plate (5) and channel-section steel (6); Square steel tube coagulation earth pillar (1) and reinforced beam (2) are cast-in-place; Square steel tube coagulation earth pillar adopts unbonded prestressing tendon to be connected with reinforced beam (2); Duct is left, built-in metal corrugated tube (4) in duct in the cross section that square steel tube coagulation earth pillar (1) is connected with reinforced beam (2); Square steel tube concrete is connected section and is welded with steel plate (5) with beam, and steel plate (5) has corresponding hole; Channel-section steel (6) is welded on square steel tube.
2. soap-free emulsion polymeization prestress according to claim 1 connects beams of concrete square steel tube concrete column reinforcing joint, it is characterised in that: steel plate (5) is general steel plate, and width is beam section height, and thickness is thickness of steel pipe.
3. soap-free emulsion polymeization prestress according to claim 1 connects beams of concrete square steel tube concrete column reinforcing joint, it is characterized in that: 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410151432.2A CN103924684B (en) | 2014-04-14 | 2014-04-14 | Soap-free emulsion polymeization prestress connects beams of concrete square steel tube concrete column reinforcing joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410151432.2A CN103924684B (en) | 2014-04-14 | 2014-04-14 | Soap-free emulsion polymeization prestress connects beams of concrete square steel tube concrete column reinforcing joint |
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| Publication Number | Publication Date |
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| CN103924684A CN103924684A (en) | 2014-07-16 |
| CN103924684B true CN103924684B (en) | 2016-06-01 |
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| CN107060076A (en) * | 2017-01-17 | 2017-08-18 | 重庆大学 | A kind of rectangular steel pipe confined concrete Column border node and its construction method without stirrup |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002161512A (en) * | 2000-09-12 | 2002-06-04 | Shimizu Corp | Connection structure of precast concrete block |
| JP2004316322A (en) * | 2003-04-18 | 2004-11-11 | Takenaka Komuten Co Ltd | Construction method of column-beam skeleton by precast concrete member |
| 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 |
| 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 CN201410151432.2A patent/CN103924684B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002161512A (en) * | 2000-09-12 | 2002-06-04 | Shimizu Corp | Connection structure of precast concrete block |
| 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 |
| CN103132602A (en) * | 2013-02-27 | 2013-06-05 | 同济大学 | Self-resetting frame joint |
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| CN103924684A (en) | 2014-07-16 |
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Effective date of registration: 20210401 Address after: 313012 Huzhou Shuanglin Industrial Park Development Co.,Ltd., shuanglin town Government Courtyard, Huzhou City, Zhejiang Province Patentee after: Huzhou Shuanglin Industrial Park Development Co.,Ltd. Address before: 100124 No. 100 Chaoyang District Ping Tian Park, Beijing Patentee before: Beijing University of Technology |
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Denomination of invention: Rectangular concrete-filled steel tubular column joints with unbonded prestressed connection concrete beams Effective date of registration: 20230322 Granted publication date: 20160601 Pledgee: Zhejiang Nanxun Rural Commercial Bank branch Shuanglin Limited by Share Ltd. Pledgor: Huzhou Shuanglin Industrial Park Development Co.,Ltd. Registration number: Y2023330000582 |