CN106522468B - A kind of confined concrete coupled column - Google Patents
A kind of confined concrete coupled column Download PDFInfo
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- CN106522468B CN106522468B CN201610905296.0A CN201610905296A CN106522468B CN 106522468 B CN106522468 B CN 106522468B CN 201610905296 A CN201610905296 A CN 201610905296A CN 106522468 B CN106522468 B CN 106522468B
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
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- Rod-Shaped Construction Members (AREA)
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Abstract
The invention discloses a kind of confined concrete coupled columns, including square bar tubing string, U-shaped steel pipe column, L shape steel pipe column and concrete column, You Yigen quadrate steel pipe column are a benchmark column, and U-shaped steel pipe column is successively welded with along the adjacent edge of benchmark column, L shape steel pipe column is successively welded with along the adjacent edge of U-shaped steel pipe column, steel pipe bundle is constituted, finally by Concrete Filled in each rectangular steel pipe column of steel pipe bundle, forms confined concrete coupled column.The present invention overcomes the disadvantage of conventional steel bar concrete column ductility and energy dissipation capacity difference, while improving concrete filled steel tube section form, to greatly improve its bearing capacity and application range.It greatly improves pillar anti-seismic performance, and apply suitable for the building in skyscraper and high earthquake intensity area convenient for construction.
Description
Technical field
The present invention relates to a kind of novel steel-concrete coupled column, in particular to a kind of novel confined concrete coupled columns.
Background technique
Pillar is the indispensable key member in all architectural structure systems, is always domestic and international civil engineering scholar
The emphasis component of research has carried out a large amount of research work using reinforced column and steel core concrete column as main object at present
Make.By improving column arrangement of reinforcement or steel tube performance, element bearing capacity is improved, pillar mechanical property is improved, becomes the master of pillar research
Want one of direction.In recent years, overwhelming majority structure in China still uses reinforced column, but studies have shown that reinforced column
Under various novel reinforcement schemes, although comprehensive performance increases, comprehensive anti-seismic performance, failure by shear is serious, only passes through
Stirrup amount and form of reinforcement are improved to improving coupling beam ductility and shear resistance is limited, and construct the configuration of complicated and reinforcing bar compared with
The close perfusion for being unfavorable for concrete.And for steel core concrete column, being of limited application, it is relatively wide only to apply in terms of bridge at present,
When steel pipe wall is relatively thin, inside still needs to configuration reinforcement or fashioned iron, constructs complex, and the steel tube concrete thicker for tube wall
Soil can not reach steel pipe and the ideal compound action of concrete.The current combining form of steel core concrete column also compares simultaneously
It is single, it is difficult to apply when cross sectional shape is special, and effect of contraction performance is not comprehensive.Therefore, it is mixed to develop a kind of novel constraint
Solidifying local soil type's zygostyle, which just becomes, is applied to urgent problem to be solved in building.
Summary of the invention
The technical problem to be solved by the present invention is a kind of steel-concrete coupled column, i.e. confined concrete coupled column are provided,
Overcome the disadvantage of conventional steel bar concrete column ductility and energy dissipation capacity difference, while improving concrete filled steel tube section form, thus greatly
Its application range is improved greatly.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of confined concrete coupled column, including square bar tubing string, U-shaped steel pipe column, L shape steel pipe column and concrete column,
It is a benchmark column by a quadrate steel pipe column, U-shaped steel pipe column is successively welded with along the adjacent edge of benchmark column, along U-shaped steel pipe column
Adjacent edge on be successively welded with L shape steel pipe column, steel pipe bundle is constituted, finally by Concrete Filled in each rectangular steel pipe column of steel pipe bundle
In, form confined concrete coupled column.
Further, the U-shaped steel pipe column includes U-shaped opening, U-shaped opening adjacent edge and U-shaped opening relative edge；The L shape
Steel pipe column includes L shape steel pipe column side.
Preferably, the confined concrete coupled column is rectangle rod structure, benchmark column is located at confined concrete coupled column
A corner, along benchmark column horizontal direction and vertical direction respectively weld several U-shaped steel pipe columns constitute side column, then welding
Several are welded on the inside of two side columns afterwards and forms final steel pipe bundle in the L shape steel pipe column of array distribution, finally by concrete
It is filled.
Further, the U-shaped opening and corner benchmark column adjacent two edges are welded, U-shaped opening and U-shaped opening relative edge according to
Secondary welding；U-shaped opening adjacent edge that the L shape steel pipe column side is docked with two respectively, two docking U-shaped opening adjacent edges with
L shape steel pipe column while or two docking L shape steel pipe column while connect.
Preferably, the confined concrete coupled column is square rod structure, benchmark column is located at confined concrete combination
The middle part of column respectively welds several U-shaped steel pipe columns along each edge direction of benchmark column and constitutes backbone, then backbone periphery after welding
It welds several L shape steel pipe columns and forms final steel pipe bundle, be finally filled by concrete.
Further, the U-shaped opening and middle part benchmark column four edges weld, and U-shaped opening is successively welded with U-shaped opening relative edge
It connects；U-shaped opening adjacent edge, two U-shaped opening adjacent edges docked and the L shape that the L shape steel pipe column side is docked with two respectively
Steel pipe column while or two docking L shape steel pipe column while connect.
Preferably, the confined concrete coupled column is special-shaped column structure, benchmark column is located at confined concrete coupled column
A corner, respectively weld U-shaped steel pipe column along benchmark column horizontal direction and vertical direction and form final steel pipe bundle, finally by mixing
Solidifying soil is filled.
Further, the square bar tubing string, U-shaped steel pipe column and L shape steel pipe column are cold-formed thin-walled steel pipe, and single steel pipe
The side length of column is no less than 100mm, should not exceed 300mm.
Further, the square bar tubing string is square or rectangle structure；The rectangular steel tube vial wall is equipped with and opens
Hole.
Further, the connection between the steel pipe is all made of three side weld all arounds welding.
The beneficial effects of the present invention are:
Novel confined concrete coupled column mainly provides bearing capacity by confined concrete and steel plate jointly, about using steel pipe
The good bearing capacity of beam concrete and plastic deformation ability carry out shearing resistance, have in pillar and fill out steel plate in muti-piece, to realize carrying
The raising of power and anti-seismic performance, while bonding between the two is enhanced, increase the contact area of steel plate and concrete, to protect
The collective effect of card steel plate and concrete improves the effect of contraction that concrete is subject to, and can significantly improve the shear-carrying capacity of pillar
With ductility energy dissipation capacity, to substantially improve the anti-seismic performance of common pillar.
Novel confined concrete coupled column simple structure, steel pipe bundle are installed in the directly prefabricated completion of factory now
The disadvantages of cast-in-place concrete afterwards greatly facilitates construction, eliminates the construction difficulty and complicated construction of ordinary reinforced concrete column；
And since each steel pipe in steel pipe bundle is equivalent to a concrete delivery pipe, concrete is not easy to isolate.Therefore phase
Compared with common steel tube concrete, steel pipe bundle concrete is using splicing production, and global sections are various informative, and each intracavitary concrete
Section is smaller, and core space concrete can preferably be played the effect of concrete by better effect of contraction.Each chamber simultaneously
Body is thin-wall steel tube, and when pillar section is larger, without the concern for the Welding Problems of thick walled steel tube, the production of steel pipe bundle is also more
It is easy.
Under big shake effect, concrete reduces monolayer steel pipe in lotus repeatedly to the effect of contraction of steel pipe built in multilayer significantly
Load effect lower more easily generation buckling and unstability and high-strength concrete use the problems such as limited.Simultaneously because novel confined concrete
Coupled column is composed of more concrete filled steel tubes, and when pillar is by eccentric load and uneven load, stress is clear,
Force analysis is simple.
The present invention absorbs the advantages of steel core concrete column, and bearing capacity greatly improves, and has higher plasticity and shock resistance
Can, obvious economic construction is simple is substantially shorter the duration, and steel pipe is more obvious to the effect of contraction of core concrete, greatly
It is big to improve mechanical performance of concrete, and since part steel pipe is embedded in inside concrete, it more efficient can prevent outside the plane of steel plate
Destabilization problems.Simultaneously in terms of force analysis, the stress of steel pipe bundle concrete definitely, is analyzed more succinct.It can be each
It applies in kind shaped cross column, and is promoted and applied in the building of skyscraper and high earthquake intensity area.
Detailed description of the invention
Fig. 1 is square section steel pipe concrete beam column section schematic diagram；
Fig. 2 is concrete filled steel rectangular tubes beam column section schematic diagram；
Fig. 3 is square section concrete filled steel tube beam column section schematic diagram of the benchmark column at middle part；
Fig. 4 is a kind of novel confined concrete coupled column schematic cross-section of odd-shaped cross section；
Fig. 5 (a)-(c) is square bar tubing string, U-shaped steel pipe column and L tee section steel pipe column schematic diagram；
Fig. 6 is that (a)-(c) carries out the Stress Map after finite element analysis to common square steel tube；
Fig. 7 is that the load-displacement curve after finite element analysis is carried out to common square steel tube；
Fig. 8 is that (a)-(c) carries out the Stress Map after finite element analysis to novel confined concrete coupled column；
Fig. 9 is that the load-displacement curve after finite element analysis is carried out to confined concrete coupled column of the present invention.
In figure: 1 is square bar tubing string, and 2 be U-shaped steel pipe column, and 2-1 is U-shaped opening, and 2-2 is U-shaped opening adjacent edge, and 2-3 is
U-shaped opening relative edge, 3 be L shape steel pipe column, and 3-1 is L shape steel pipe column side；4 be concrete filled column.
Specific embodiment
Below with reference to specific example and attached drawing, the present invention will be further described.It should be noted that following embodiments are only
It is limited to explanation of the invention, but does not limit practical range of the invention.The increasing of all structures made on the basis of this programme
Add or with the replacement of same content, protection scope of the present invention should all be belonged to.
As shown in Fig. 1, Fig. 5 (a)-(c), a kind of embodiment of the confined concrete coupled column is steel pipe bundle concrete square
Rod structure, including square bar tubing string 1, U-shaped steel pipe column 2, L shape steel pipe column 3 and concrete filled column 4.Wherein, square bar tubing string 1
It is square structure, using a benchmark column, respectively welds two 2 structures of U-shaped steel pipe column along benchmark column horizontal direction and vertical direction
At side column, then two side column lower rights after welding weld four L shape steel pipe columns 3 and form final steel pipe bundle, finally by
Concrete is filled.
Wherein: square bar tubing string 1 is the benchmark column of upper left corner post, is successively welded in 1 adjacent two edges of square bar tubing string
Have a U-shaped steel pipe column 2, the U-shaped opening 2-1 of U-shaped steel pipe column 2 successively with the square side of the shape steel pipe column 1 and adjacent U-shaped steel pipe
The U-shaped opening relative edge 2-3 of column 2 is connected to each other；L shape steel pipe is successively welded with along the U-shaped opening adjacent edge 2-2 of U-shaped steel pipe column 2
Column 3, what the L shape steel pipe column side 3-1 of L shape steel pipe column 3 connected and was connected to each other with the U-shaped opening adjacent edge 2-2 of two docking respectively
U-shaped opening adjacent edge 2-2 and L shape steel pipe column while 3-1 connect or with two dock L shape steel pipe column while 3-1 connect；Constitute steel
Tube bank, is finally filled in each rectangular steel pipe column 1 of steel pipe bundle by concrete, forms confined concrete coupled column.
As shown in Fig. 2, second of embodiment of the confined concrete coupled column is steel pipe bundle concrete rectangular rod structure,
It equally include square bar tubing string 1, U-shaped steel pipe column 2, L shape steel pipe column 3, concrete filled column 4.Wherein: square bar tubing string 1 is a left side
The benchmark column of upper corner post, then welded with U-shaped steel pipe column 2 along the direction perpendicular to square steel tube adjacent two edges, form rectangle
Two side columns in column, remainder weld by 3 pairs of inside of L shape steel pipe column and remaining two side column and be formed finally later
Steel pipe bundle is finally filled by concrete.
As shown in figure 3, the third embodiment of the confined concrete coupled column is steel pipe bundle concrete squares column knot
Structure, the benchmark column of square bar tubing string 1 at the middle part of confined concrete coupled column, along the adjacent four edges of square bar tubing string 1 according to
The secondary U-shaped steel pipe column 2 that is welded with constitutes backbone, and then backbone periphery after welding is welded several L shape steel pipe columns (3) and formed most
Whole steel pipe bundle.The U-shaped opening 2-1 of U-shaped steel pipe column 2 is successively connected to each other with the square side of shape steel pipe column 1；Along U-shaped steel pipe column 2
U-shaped opening adjacent edge 2-2 on be successively welded with L shape steel pipe column 3, the L shape steel pipe column side 3-1 of L shape steel pipe column 3 respectively with two
U-shaped opening adjacent edge 2-2 and L shape steel pipe column the side 3-1 or two docking that the U-shaped opening adjacent edge 2-2 of docking connects, is connected to each other
L shape steel pipe column side 3-1 connect；Steel pipe bundle is constituted, is finally filled in each rectangular steel pipe column 1 of steel pipe bundle by concrete,
Form confined concrete coupled column.
As shown in figure 4, the 4th kind of embodiment of confined concrete coupled column is the concrete profiled rod structure of steel pipe bundle, packet
Include square bar tubing string 1, U-shaped steel pipe column 2, concrete filled column 4.Wherein: square bar tubing string 1 is a corner benchmark column, then uses U
Shape steel pipe column 2 is welded along the direction perpendicular to square steel tube adjacent two edges, is finally filled by concrete.
Benchmark column of the invention is not merely square, and can is rectangle, also be can change the side length of L shape and U-shaped column, with
Meet various sizes of combination.Steel pipe bundle concrete is composed of small bore steel core concrete column, and it is more to constitute multiple section
Kind size column.Above-mentioned square bar tubing string 1, U-shaped steel pipe column 2 and L shape steel pipe column 3 are cold-formed thin-walled steel pipe；Company between steel pipe
It connects and is all made of three face weld all arounds welding.
Novel confined concrete coupled column design of the invention is structure as a whole, and square column is benchmark column, and U-shaped column is side column, L
Shape column is relief post, finally again by Concrete Filled.In addition to several novel confined concrete coupled columns of the present embodiment, by several
Single-column can also form other kinds of Special-Shaped Column.
The present invention by being composed of above-mentioned a variety of concrete filled steel tubes, using the identical size of finite element method for simulating with match
The common steel tube concrete column of steel rate and novel confined concrete coupled column such as analyze (a)-(c) -8 of result figure 6 (a)-(c).It is logical
Fig. 6 (a)-(c) and the comparison of Fig. 8 (a)-(c) Stress Map are crossed, shows the deformation class of steel pipe bundle Yu common square steel tube
It seemingly, is all interlude deformation, and for the concrete filled, concrete in steel pipe bundle is good by protection situation, not
There is very big deformation failure.Meanwhile comparison diagram 7 and Fig. 9, the results showed that the ductility of novel confined concrete coupled column is common
More than ten times of concrete filled steel tube have very strong anti-seismic performance with good deformability and ductility factor.
The present invention is bright in complex stress situation lower stress by being composed of above-mentioned multiple concrete filled steel tube pole units
Really, it is convenient for force analysis, it is simpler especially in the force analysis to Special-Shaped Column.Compared to common steel tube concrete column,
No matter pillar sectional area is much, and thick walled steel tube is not in, while in whole interior also inbuilt steel tube, therefore it is absorbing steel pipe
While the excellent properties of concrete, better anti-seismic performance, workability and applicability are shown.
In order to guarantee enough bearing capacitys and workability, the steel pipe in steel pipe bundle concrete is cold-formed thin-walled steel pipe,
And the side length of single steel pipe column is no less than 90mm, should not exceed 300mm.In order to better assure steel plate and coagulation earth cooperation
Work, can carry out aperture in the interior steel pipe column of novel confined concrete coupled column.
The construction technology of novel confined concrete coupled column of the present invention:
Welding between the cold-formed thin-walled steel pipe and steel pipe of novel confined concrete coupled column, can be in specialized steel
The production of structure company, then transports to construction site, without carrying out formwork, further casting concrete.
When using novel confined concrete composite column structure, can punch on the tube wall of a combination thereof inner prop, it is ensured that steel with
Effective connection between concrete finally carries out integrated poured after the completion of steel pipe bundle entire combination.It designs through the invention
Novel confined concrete coupled column, improves the energy dissipation capacity of pillar, improves anti-seismic performance, and convenient and quick construction, creates
Certain Social benefit and economic benefit.
Claims (7)
1. a kind of confined concrete coupled column, it is characterised in that: including square bar tubing string (1), U-shaped steel pipe column (2), L shape steel pipe
Column (3) and concrete column (4), You Yigen quadrate steel pipe column (1) are a benchmark column, are successively welded along the adjacent edge of benchmark column
There are U-shaped steel pipe column (2), L shape steel pipe column (3) is successively welded with along the adjacent edge of U-shaped steel pipe column (2), constitutes steel pipe bundle, finally
By Concrete Filled in each rectangular steel pipe column (1) of steel pipe bundle, confined concrete coupled column is formed；
The U-shaped steel pipe column (2) includes U-shaped opening (2-1), U-shaped opening adjacent edge (2-2) and U-shaped opening relative edge (2-3)；
The L shape steel pipe column (3) includes L shape steel pipe column side (3-1)；
The square bar tubing string (1), U-shaped steel pipe column (2) and L shape steel pipe column (3) are cold-formed thin-walled steel pipe, and single steel pipe column
Side length be no less than 100mm, should not exceed 300mm；
Connection between the steel pipe is all made of three side weld all arounds welding；
Square bar tubing string (1) tube wall is equipped with aperture.
2. confined concrete coupled column according to claim 1, it is characterised in that: the confined concrete coupled column is square
Shape rod structure, benchmark column are located at a corner of confined concrete coupled column, respectively weld along benchmark column horizontal direction and vertical direction
It connects several U-shaped steel pipe columns (2) and constitutes side column, several are then welded on the inside of two side columns after welding in array distribution
L shape steel pipe column (3) forms final steel pipe bundle, is finally filled by concrete.
3. confined concrete coupled column according to claim 2, it is characterised in that: the U-shaped opening (2-1) and corner base
Quasi- column adjacent two edges welding, U-shaped opening (2-1) are successively welded with U-shaped opening relative edge (2-3)；The L shape steel pipe column side
U-shaped opening adjacent edge (2-2) that (3-1) is docked with two respectively, the U-shaped opening adjacent edge (2-2) and L shape steel pipe column being connected to each other
In (3-1) or two L shape steel pipe columns docked, (3-1) connects.
4. confined concrete coupled column according to claim 1, it is characterised in that: the confined concrete coupled column is positive
Rectangular rod structure, benchmark column are located at the middle part of confined concrete coupled column, respectively weld several U-shaped steel along each edge direction of benchmark column
Tubing string (2) constitutes backbone, and then backbone periphery after welding welds several L shape steel pipe columns (3) and forms final steel pipe bundle,
Finally it is filled by concrete.
5. confined concrete coupled column according to claim 4, it is characterised in that: the U-shaped opening (2-1) and middle part base
Quasi- column four edges welding, U-shaped opening (2-1) are successively welded with U-shaped opening relative edge (2-3)；The L shape steel pipe column side (3-1)
The U-shaped opening adjacent edge (2-2) docked respectively with two, the U-shaped opening adjacent edge (2-2) and L shape steel pipe column side (3- that are connected to each other
1) or the L shape steel pipe column side (3-1) of two docking connects.
6. confined concrete coupled column according to claim 1, it is characterised in that: the confined concrete coupled column is different
Shape rod structure, benchmark column are located at a corner of confined concrete coupled column, respectively weld along benchmark column horizontal direction and vertical direction
It connects U-shaped steel pipe column (2) and forms final steel pipe bundle, be finally filled by concrete.
7. confined concrete coupled column according to claim 1, it is characterised in that: the square bar tubing string (1) is pros
Shape or rectangle structure.
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| CN113653261A (en) * | 2021-09-14 | 2021-11-16 | 北京天邦巨成科技有限公司 | Multi-cavity combined concrete-filled steel tube special-shaped column |
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