CN103924683B - Prestressing force connects beams of concrete square steel tube concrete column reinforcing joint - Google Patents
Prestressing force connects beams of concrete square steel tube concrete column reinforcing joint Download PDFInfo
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- CN103924683B CN103924683B CN201410151353.1A CN201410151353A CN103924683B CN 103924683 B CN103924683 B CN 103924683B CN 201410151353 A CN201410151353 A CN 201410151353A CN 103924683 B CN103924683 B CN 103924683B
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Abstract
A kind of prestressing force connects beams of concrete square steel tube concrete column reinforcing joint, belongs to building structure technology field.Including square steel tube concrete column, reinforced beam, presstressed reinforcing steel, steel plate, channel-section steel.It is characterized in that：Square steel tube concrete column is cast-in-place with reinforced beam；Square steel tube concrete column is connected with reinforced beam using presstressed reinforcing steel；Square steel tube concrete column is connected with reinforced beam and duct is left at section, the built-in metal bellows in duct；Square steel tube concrete is connected with beam and steel plate is welded with section, there is corresponding hole on steel plate；Channel-section steel is welded on square steel tube.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 square steel tube concrete column reinforcing joint, belong to building structure technology neck
Domain.
Background technology
Existing more than the 100 years history of application concrete filled steel tube in architectural engineering.Concrete filled steel tube due to high capacity,
The advantages of plasticity and good toughness, good economical benefit and easy construction and paid attention to by engineering circles.Concrete filled steel tube adapts to the modern times
Engineering structure is to across, towering, heavily loaded development and the need for bearing mal-condition, the industrialization for meeting Modern Construction Technology will greatly
Ask, thus be just increasingly widely used in individual layer and multi storied industrial factory building post, equipment frame post, pier, stake, space knot
In structure, commercial square, multistory office and house, high-rise and high-rise building and bridge structure, good economy has been obtained
Effect and architectural effect.Wherein, concrete-filled circular steel tube column has made more research in China, corresponding code has been worked out, in reality
Also more application has been obtained in the engineering of border.Square steel tube concrete is an important composition of whole concrete filled steel tube
Part, it is in status arranged side by side with concrete filled steel tube.Square steel tube concrete profile rule, is conducive to coordinating building to set
Meter, is conducive to beam-to-column joint, there is preferable application prospect.
Square steel tube concrete column and the key issue that the connecting node of beam is when carrying out concrete filled steel tube engineering design
One of, the validity of its connecting node directly affects integrally-built rigidity, stability and bearing capacity, also has influence on scene and applies
Work difficulty and construction speed.Existing Concrete-filled tubular connections form is various, and the construction of node and design difficulty often turn into system
The bottleneck factor of about new superior structural popularization and application.Therefore, one kind is researched and developed new with in-site installation simple and fast, to operation
Personnel's technology and construction environment are less demanding, connect safe and reliable square steel tube concrete column and girder connection form, it appears
It is 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
Beams of concrete square steel tube concrete column reinforcing joint is connected object of the present invention is to provide a kind of prestressing force,
Ensure node connection effectively, power transmission it is clear and definite under the premise of, by improving reinforced beam and square steel tube concrete column section
Point connected mode, is assembled using presstressed reinforcing steel, reduces difficulty of construction, accelerates construction speed.Speed of application of the present invention
Hurry up, the shear-carrying capacity of node can be effectively increased, strengthen its switching performance, have 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 square steel tube
Concrete column reinforcing joint, as shown in Figure 1, 2, the node include square steel tube concrete column 1 and reinforced beam 2, the two by
Presstressed reinforcing steel composition is overall；Square steel tube concrete column 1 is cast-in-place with reinforced beam 2；Square steel tube concrete
Post 1 is connected with reinforced beam 2 using presstressed reinforcing steel；What square steel tube concrete column 1 was connected with reinforced beam 2 cuts
Duct is left on face, the built-in metal bellows 4 in duct；Square steel tube concrete column 1 is connected at section with beam and is welded with
Steel plate 5, there is corresponding hole on steel plate 5；Channel-section steel 6 is welded on square steel tube.
The steel plate 5 is general steel plate, and width is beam section height, and thickness is thickness of steel pipe.
The web height of the channel-section steel 6 is beam section width, and flange width is beam section height, and channel-section steel length is that beam section is high
Degree.
The design principle of the prestressing force size of presstressed reinforcing steel 3 is：The friction shear resisting ability of junction should be ensured, made again
Stress in presstressed reinforcing steel is remained within yield limit.
Side column end steel plate can as 3 tensioning of deformed bar when bearing plate.
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
Steel 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, 1, square steel tube concrete column, 2, reinforced beam, 3, presstressed reinforcing steel, 4, metal bellows, 5, steel
Plate, 6, channel-section steel, 7, mortar.
Specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
As shown in figures 1 to 6.
Embodiment 1
Prestressing force connection beams of concrete square steel tube concrete column reinforcing joint construction is as shown in Figure 1：
1st, square steel tube concrete positioning
The steel pipe of square steel tube concrete column 1 carries out perforate treatment in steel construction processing factory in strict accordance with drawing；
Weld all around mode welding steel 5 and channel-section steel 6 are used at the connection beam section of square steel tube concrete column 1；Square steel tube concrete
The lifting positioning of post 1.
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 square steel tube concrete column and reinforced beam." concrete engineering construction is shown in concreting method
Technological standards ".
5th, tension of prestressed tendon
Concrete strength reach design strength 85% after carry out the tensioning of presstressed reinforcing steel, tensioning uses symmetrical tensioning side
Formula, the position of stretching force overlaps with duct center line.Cable tensios control using stress and stretch value dual control, stressing sequence is 0 →
10% σcon→ 100% σcon→ 103% σcon→ anchoring.
6th, duct grouting
Mortar 7 is filled to duct within 48h after the completion of tensioning, grouting uses 42.5R Portland cements, in filling process
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
On steel plate 5, this steel plate can as tension of prestressed tendon when bearing plate.
Claims (1)
1. prestressing force connects beams of concrete square steel tube concrete column reinforcing joint, it is characterised in that：The node includes square rectangle steel
Pipe concrete column (1), reinforced beam (2), presstressed reinforcing steel (3), steel plate (5) and channel-section steel (6)；Square steel tube concrete column
It is connected using presstressed reinforcing steel with reinforced beam (2)；Square steel tube concrete column (1) is connected with reinforced beam (2)
Section on leave duct, built-in metal bellows (4) in duct；Square steel tube concrete column (1) is connected section with beam
Place is welded with steel plate (5), and steel plate has corresponding hole on (5)；Channel-section steel (6) is welded on square steel tube；Square steel tube coagulation
Earth pillar (1) and reinforced beam (2) are cast-in-place, and presstressed reinforcing steel (3) uses bonded prestressed tendon；Steel plate (5) is general
Logical steel plate, width is beam section height, and thickness is thickness of steel pipe；
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410151353.1A CN103924683B (en) | 2014-04-14 | 2014-04-14 | Prestressing force connects beams of concrete square steel tube concrete column reinforcing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410151353.1A CN103924683B (en) | 2014-04-14 | 2014-04-14 | Prestressing force connects beams of concrete square steel tube concrete column reinforcing joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103924683A CN103924683A (en) | 2014-07-16 |
| CN103924683B true CN103924683B (en) | 2017-06-27 |
Family
ID=51143061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410151353.1A Expired - Fee Related CN103924683B (en) | 2014-04-14 | 2014-04-14 | Prestressing force connects beams of concrete square steel tube concrete column reinforcing joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103924683B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2436578Y (en) * | 2000-06-16 | 2001-06-27 | 王关根 | Universal joint device for steel structure building |
| JP2002161512A (en) * | 2000-09-12 | 2002-06-04 | Shimizu Corp | Connection structure of precast concrete block |
| CN202416701U (en) * | 2011-12-29 | 2012-09-05 | 中国一冶集团有限公司 | Combined pre-stressed concrete beam with binder and no binder |
| 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 |
| CN203096949U (en) * | 2013-02-21 | 2013-07-31 | 华汇工程设计集团股份有限公司 | Pre-tensioning method prestressing force superposed beam structural system |
| CN203200925U (en) * | 2013-04-16 | 2013-09-18 | 东南大学 | Prefabricated concrete framework beam column connected node structure |
-
2014
- 2014-04-14 CN CN201410151353.1A patent/CN103924683B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN103924683A (en) | 2014-07-16 |
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Granted publication date: 20170627 Termination date: 20200414 |