CN106049755A - Rectangular concrete-filled steel tube column restrained by rib-perforating pull bars - Google Patents
Rectangular concrete-filled steel tube column restrained by rib-perforating pull bars Download PDFInfo
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- CN106049755A CN106049755A CN201610145467.4A CN201610145467A CN106049755A CN 106049755 A CN106049755 A CN 106049755A CN 201610145467 A CN201610145467 A CN 201610145467A CN 106049755 A CN106049755 A CN 106049755A
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- Prior art keywords
- steel tube
- pull bar
- steel pipe
- steel
- concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a rectangular concrete-filled steel tube column restrained by rib-perforating pull bars. The rectangular concrete-filled steel tube column comprises stiffening ribs, pull bars, a rectangular steel tube and concrete. The stiffening ribs are strip-shaped steel plates with thickness identical to the thickness of the steel tube. The stiffening ribs are provided with holes at positions where the pull bars pass through, and the holes are of the exact size that allows the pull bars to pass through. The stiffening ribs are uniformly arranged at the internal circumference of the wall of the steel tube, perpendicular to the steel tube wall and connected with the steel tube wall in a welding manner. The pull bars are common pull bars or steel bars, vertically penetrate the tube wall of the rectangular steel tube and are staggerly arranged at proper intervals along the long side and short side of the column. The end parts of the pull bars are connected with the steel tube wall through welding or by bolts. According to the invention, the stiffening ribs are cooperated with the restraining pull bars, so bonding slip between the steel tube wall and concrete can be delayed, local outer surface deformation of the steel tube wall can be alleviated, the lateral rigidity of the steel tube wall can be improved, and the steel tube wall has improved capacity in resisting local bending and restraining effect on core concrete; and thus, the rectangular concrete-filled steel tube column has improved bearing capacity and ductility.
Description
Technical field
The present invention relates to building structure technology field, mix particularly to a kind of rectangular steel pipe utilizing perforation rib pull bar constraint
Solidifying earth pillar.
Background technology
Rectangular steel-tube concrete column has the distinctive feature that circular steel tube concrete post is incomparable in engineer applied, such as steel
Manage and easy to make connection with beam be easily processed, easy construction, be prone to meet architectural plane requirement, the relative development in cross section and inertia
Square is big, be suitable as the advantages such as bending component, day by day causes the attention of people in engineering practice.
For concrete-filled rectangular steel tube, owing to steel pipe is concentrated mainly on corner to core concrete effect of contraction, on four limits
Middle part effect of contraction there's almost no, so steel pipe is much smaller than round steel pipe coagulation to the overall effect of restraint of core concrete
Soil, its bearing capacity is much lower compared with circular steel tube concrete.Long limit, rectangular steel pipe cross section is weak to the effect of contraction of core concrete
In minor face, and steel pipe long limit shorter edge is more easy to cripling.
It is effectively improved the lateral rigidity of rectangular steel-tube concrete column steel plate, delays the bonding between steel pipe walls and concrete
Sliding, can promote the ability of its opposing cripling and the effect of contraction to core concrete, strengthening steel pipe and concrete
Integraty, thus improve bearing capacity and ductility.
Rectangular Cft Columns With Binding Bars post uses and arranges horizontal water on cross section the most at spacing intervals
The design form of flat binding bar.The advantage of this form is that a bar connects, and bilateral, to drawing, greatly strengthen core coagulation
The hoop constraint of soil, thus improve the bearing capacity of steel core concrete column, but for retraining weak spot between binding bar vertical, horizontal,
Avoid the generation of these position criplings, the comprehensive formation operative constraint to core concrete, it is necessary to encryption constraint is drawn
Bar is arranged, too much, pull bar consumption is big in boring.
Another way is to arrange the form of ribbed stiffener to concrete-filled rectangular steel tube reinforcement in steel pipe periphery midpoint.This
The outer deformability of form ribbed stiffener containment surfaces is weak, loads the later stage and concrete binding lost efficacy and is easily caused disengaging, for delaying or anti-
The only deformation of middle side edge, needs bigger stiffness ratio of stiffener to panel, consumes steel more.And, ribbed stiffener fails to be formed core
The hoop constraint of concrete, lateral confinement power be weaker than binding bar to drawing connection, although can delay to a certain extent local bend
Bent generation, but the bearing capacity improving rectangular steel-tube concrete column is limited.
Summary of the invention
In order to overcome shortcoming that prior art exists with not enough, make full use of the intensity of steel, delay or avoid peripheral steel
The longitudinally, laterally cripling problem of plate, forms the hoop constraint to core concrete, strengthens the one of steel pipe and concrete
Property, thus improving the axial compression of rectangular steel-tube concrete column, bias bearing capacity, anti-seismic performance, the present invention proposes one and changes
The mentality of designing of kind rectangular steel-tube concrete column lateral rigidity and construction method, i.e. perforation rib pull bar constraint concrete-filled rectangular steel tube
Post.
Perforation rib pull bar constraint rectangular steel-tube concrete column integraty reinforcement technique is by perforate on ribbed stiffener, constraint
Pull bar is bored a hole and mistake, connects (welding or bolt connection) and in steel pipe walls, perforate ribbed stiffener forms effective effect of contraction, enters
And slow down the cripling of steel pipe walls.This design is by the point-like constraint of binding bar in binding bar rectangular steel-tube concrete column
Become the wire constraint of ribbed stiffener, be not required to encrypt binding bar, too much perforate can be prevented effectively from steel pipe walls.With the second side
Formula is compared, and arranging of binding bar defines bigger hoop constraint effect to steel pipe walls, it is not necessary to use bigger floor firm
Degree ratio, can effectively delay the bond-slip between steel pipe walls and concrete.
The present invention adopts the following technical scheme that
Perforation rib pull bar constraint rectangular steel-tube concrete column, including rectangular steel pipe, concrete, ribbed stiffener, pull bar.Described ribbed stiffener
For strip-type steel plate, its thickness is preferably identical with thickness of steel pipe.Described ribbed stiffener upper connecting rod answers perforate through position, and hole size is with just
Can be advisable through pull bar.Described ribbed stiffener is evenly arranged at steel pipe pars intramuralis periphery, is perpendicular to steel pipe walls and uses welding method
Connect.Described pull bar uses common pull bar or reinforcing bar, passes perpendicularly through the long limit of rectangular steel pipe, and minor face, along post height with suitable spacing
Interlaced arrangement.Described tie rod end and the first connected mode of steel pipe walls are to select weld, such as the modes such as plug welding of boring a hole, and second
Planting connected mode is to carry out mantle fiber process at tie rod end thread cutter for steel bar, with bolts through steel pipe walls tapping.
Beneficial effects of the present invention:
(1) the combining closely of perforate ribbed stiffener and binding bar, does not the most increase difficulty of construction increasing few steel using amount, and impact is executed
In the case of work progress, form the effect of contraction of continuous effective in four middle side edge of steel pipe walls at whole height, improve side
Restriction ability, delays or avoids the sliding between steel pipe and concrete, slow down the elastoplasticity between binding bar to greatest extent
Flexing, makes the integraty of rectangular steel pipe and concrete significantly be strengthened.(2) on the premise of meeting structural safety, energy
To large extent with relatively thin steel plate thickness, less ribbed stiffener width, strengthen the integraty of steel pipe and concrete, it is achieved higher
Intensity, rigidity and ductility.(3) restraining forces wearing pull bar will be uniformly transferred to steel plate by ribbed stiffener, make the point-like of pull bar
Constraint is changed into wire constraint, it is to avoid stress is concentrated, steel pipe to the effect of contraction of core concrete relative to adding merely constraint
The rectangular steel-tube concrete column of pull bar is more continuously with uniform, relative to adding merely the rectangular steel-tube concrete column of ribbed stiffener more
Can effectively reduce steel quantity consumption, strengthen the integraty of steel pipe and concrete.(4) pull bar is along along short transverse, and ribbed stiffener is long along cross section
Steel plate is split by degree direction, reduces depth-width ratio and the flakiness ratio of steel plate, so that its half buckle wavelength is greatly reduced.
For peripheral steel plate, pull bar constraint ribbed stiffener provides strong sidewise restraint, prevents the flexing that steel plate is too early, is conducive to sending out
Waving its intensity, meanwhile, steel plate, again with pull bar as fulcrum, retrains core concrete with its bending rigidity, makes concrete multi-shaft pressurized
Improve its intensity.(5) other steel beam column that this component is prone to surrounding are connected, and can give full play to steel plate and concrete two kinds
The mechanical property of material, not only improves and undertakes vertical load, is conducive to again undertaking horizontal loading.
Accompanying drawing explanation
Fig. 1 is the front elevation view of the present invention；
Fig. 2 is the side view of the present invention；
Fig. 3 is the A-A profile of Fig. 1, Fig. 2；
Fig. 4 is the front elevation view of the special case of the present invention, i.e. square steel tube concrete column；
Fig. 5 is the side view of the special case of the present invention, i.e. square steel tube concrete column；
Fig. 6 is the A-A profile of Fig. 4, Fig. 5.
Shown in figure: the perforate ribbed stiffener 3-cross section minor face that 1-pull bar is arranged with steel pipe walls junction point 2-cross section long side direction
The ribbed stiffener position of opening 7-concrete of the perforate ribbed stiffener 4-pull bar 5-steel pipe 6-rectangular steel-tube concrete column that direction is arranged
For square steel tube concrete column, 2,3 represent the perforate ribbed stiffener that different directions length of side direction is arranged.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
Embodiment
A kind of perforation rib pull bar constraint rectangular steel-tube concrete column, including perforate ribbed stiffener 2, the cross section of the setting of cross section long side direction
The perforate ribbed stiffener 3 of short side direction setting, pull bar 4, rectangular steel pipe 5, concrete seven.Described perforate ribbed stiffener is strip-type steel plate,
Its thickness is preferably identical with steel pipe 5 wall thickness.Described perforate ribbed stiffener upper connecting rod answers perforate through position 6, and hole size is passing
Pull bar 4 is advisable.Described perforate ribbed stiffener is evenly arranged at steel pipe 5 tube wall interior periphery, is perpendicular to steel pipe 5 tube wall and uses welding side
Method connects.Described pull bar 4 uses common pull bar or reinforcing bar, passes perpendicularly through the tube wall of rectangular steel pipe 5, along the long limit of column section, minor face
With suitable spacing interlaced arrangement.Described tie rod end is to select to weld, as worn with the first connected mode of steel pipe walls junction point 1
The modes such as stopple weldering, the second connected mode is to carry out mantle fiber process at tie rod end thread cutter for steel bar, opens through steel pipe walls
At hole with bolts..
Embodiment 1
The making step that a kind of rib pull bar of boring a hole retrains rectangular steel-tube concrete column is:
(1) require to determine rectangular steel pipe, pull bar and the intensity of perforate ribbed stiffener, size, position according to design drawing；
(2) rectangular steel pipe 5 of rectangular steel-tube concrete column, perforate ribbed stiffener, pull bar 4 are made；
(3) measurement and positioning pull bar 4 position, the pull bar 1 at the rectangular steel pipe of steel core concrete column is holed through position；
(4) welding manner method is used to be welded on rectangle steel tube wall by perforate ribbed stiffener；
(5) pull bar 4 is arranged in the hole that rectangular steel pipe has been drilled through perforate ribbed stiffener, uses perforation plug welding connection or bolt
Connect；
(6) concrete casting is entered in rectangular steel pipe, carry out maintenance by construction requirement.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by described embodiment
Limit, the change made under other any spirit without departing from the present invention and principle, modify, substitute, combine, simplify,
All should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (6)
1. a perforation rib pull bar constraint rectangular steel-tube concrete column, it is characterised in that include rectangular steel pipe, concrete, perforate
Ribbed stiffener, pull bar, described ribbed stiffener is evenly arranged at steel pipe pars intramuralis periphery, is perpendicular to steel pipe walls and uses welding method peace
Dress, described pull bar passes ribbed stiffener osseotomy site, and along the high long limit of post, minor face is with suitable spacing interlaced arrangement.
A kind of perforation rib pull bar constraint rectangular steel-tube concrete column the most according to claim 1, it is characterised in that described in open
Hole ribbed stiffener is strip-type steel plate, and its thickness is preferably identical with thickness of steel pipe, and perforate ribbed stiffener osseotomy site passes place, hole at pull bar
Size is be able to be advisable through pull bar.
A kind of perforation rib pull bar constraint rectangular steel-tube concrete column the most according to claim 1, it is characterised in that described in open
At pull bar through position perforate on the ribbed stiffener of hole, hole size is be able to be advisable through pull bar.
A kind of rectangular steel-tube concrete column adding binding bar and stiffening band the most according to claim 1, its feature exists
In, described binding bar uses common pull bar or reinforcing bar, passes perpendicularly through the tube wall of perforate ribbed stiffener and steel pipe, along the high long limit of post,
Minor face is with suitable spacing interlaced arrangement, and tie rod end is connected with steel pipe walls.
A kind of rectangular steel-tube concrete column adding binding bar and stiffening band the most according to claim 4, its feature exists
In, described tie rod end is selected with the first connected mode of steel pipe walls and is welded, such as perforation plug welding mode.
A kind of rectangular steel-tube concrete column adding binding bar and stiffening band the most according to claim 4, its feature exists
In, described tie rod end is with bolts with the second connected mode of steel pipe walls, and the end of used pull bar is used in advance
Thread cutter for steel bar carries out mantle fiber process, with bolts through steel pipe walls perforate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145467.4A CN106049755A (en) | 2016-03-15 | 2016-03-15 | Rectangular concrete-filled steel tube column restrained by rib-perforating pull bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145467.4A CN106049755A (en) | 2016-03-15 | 2016-03-15 | Rectangular concrete-filled steel tube column restrained by rib-perforating pull bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106049755A true CN106049755A (en) | 2016-10-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610145467.4A Pending CN106049755A (en) | 2016-03-15 | 2016-03-15 | Rectangular concrete-filled steel tube column restrained by rib-perforating pull bars |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958322A (en) * | 2017-04-24 | 2017-07-18 | 西安建筑科技大学 | A kind of multi-cavity steel tube concrete post to wearing Flat-head internal hexagonal bolt |
| CN107386100A (en) * | 2017-07-27 | 2017-11-24 | 长安大学 | More limb hollow combination tower piers |
| CN107747313A (en) * | 2017-11-30 | 2018-03-02 | 中铁十六局集团有限公司 | Inner supporting device for pattern foundation pit supporting structure |
| CN108104368A (en) * | 2016-11-24 | 2018-06-01 | 重庆市中科大业建筑科技有限公司 | A kind of rigid connection suspension column of clod wash multi-cavity steel tube concrete Special-Shaped Column |
| CN112376800A (en) * | 2020-11-24 | 2021-02-19 | 河北工业大学 | Steel tube concrete column with ribs arranged obliquely through threads and design method |
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| CN206205270U (en) * | 2016-03-15 | 2017-05-31 | 河南理工大学 | Perforation rib pull bar constraint rectangular steel-tube concrete column |
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2016
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104368A (en) * | 2016-11-24 | 2018-06-01 | 重庆市中科大业建筑科技有限公司 | A kind of rigid connection suspension column of clod wash multi-cavity steel tube concrete Special-Shaped Column |
| CN106958322A (en) * | 2017-04-24 | 2017-07-18 | 西安建筑科技大学 | A kind of multi-cavity steel tube concrete post to wearing Flat-head internal hexagonal bolt |
| CN107386100A (en) * | 2017-07-27 | 2017-11-24 | 长安大学 | More limb hollow combination tower piers |
| CN107747313A (en) * | 2017-11-30 | 2018-03-02 | 中铁十六局集团有限公司 | Inner supporting device for pattern foundation pit supporting structure |
| CN112376800A (en) * | 2020-11-24 | 2021-02-19 | 河北工业大学 | Steel tube concrete column with ribs arranged obliquely through threads and design method |
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| PB01 | Publication | ||
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Application publication date: 20161026 |