CN105220833B - Interior girder system, shaped steel concrete filled steel tube cross section column and its construction method - Google Patents
Interior girder system, shaped steel concrete filled steel tube cross section column and its construction method Download PDFInfo
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- CN105220833B CN105220833B CN201510524336.2A CN201510524336A CN105220833B CN 105220833 B CN105220833 B CN 105220833B CN 201510524336 A CN201510524336 A CN 201510524336A CN 105220833 B CN105220833 B CN 105220833B
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Abstract
The invention discloses a kind of interior girder system, shaped steel concrete filled steel tube cross section column and its construction method, wherein described shaped steel concrete filled steel tube cross section column includes outside steel pipe, interior fill concrete and interior girder system, it is criss-cross shaped steel that the interior girder system, which includes a cross section, cross section is the angle steel of Γ shapes, the pressure house on angle steel and shape steel web is longitudinally disposed at along girder system, the pull bar being fixedly connected respectively with the pressure house on the pressure house and angle steel on shape steel web with two ends, the angle steel is distributed in quadrangle；The angle steel is fixedly connected with outside steel pipe.The present invention improves load-bearing and the shear resistance of post component by steel pipe and interior girder system, and component ductility is significantly improved, structural seismic capacity enhancing；Interior truss plays the effect of plane outer support to the web of shaped steel, reduces the flakiness ratio and ratio of height to thickness of web, improves the stability of web.
Description
Technical field
The present invention relates to building Special-Shaped Column, especially a kind of shaped steel-steel core concrete column and its construction method.
Background technology
Load is not subject in the filling wall design of frame structure, the load of floor is finally all undertaken and transmitted by frame column
To next layer.Gradually increase with the number of plies of building construction, the load that frame column undertakes also is improved constantly, and this requires column section
Continuous increase.Traditional rectangle column section, because section is larger, can protrude metope, cause the occupancy of the interior space.To solve
This problem, part building uses Special-Shaped Column at structure corner at present.
But existing Special-Shaped Column is the problem of also have a lot.
The content of the invention
Applicant has found after research and experiment：In order to further improve the vertical load and horizontal stroke of shaped rc columnses
To load bearing capacity, the sectional area without increasing Special-Shaped Column can bury shaped steel in Special-Shaped Column, form steel reinforced concrete abnormity
Post.Meanwhile, occur bond damage to avoid profile steel concrete column, stirrup should be set in Special-Shaped Column.But it is due to shaped steel in post
It is irregular shape, stirrup can not be directly sleeved on shaped steel, it is necessary to blocked stirrup and be connected on shape steel web or in type
Punched on steel and pass through stirrup.Therefore prior art not only reduces the stress performance of stirrup and shaped steel, and complex operation is numerous
Trivial, time and fund cost are high.
Goal of the invention：One purpose is to provide a kind of shaped steel-concrete filled steel tube cross section column, to solve prior art presence
Above mentioned problem.Further objective is that providing the construction method of above-mentioned shaped steel-concrete filled steel tube cross section column.
Technical scheme：A kind of shaped steel-concrete filled steel tube cross section column, it is characterised in that mixed including outside steel pipe, interior filling
Native and interior girder system is coagulated, it is criss-cross shaped steel that the interior girder system, which includes a cross section, cross section is the angle steel of Γ shapes,
Be longitudinally disposed at the pressure house on angle steel and shape steel web along girder system, and two ends respectively with the pressure sleeve on shape steel web
The pull bar that pressure house on cylinder and angle steel is fixedly connected, the angle steel is distributed in quadrangle；The angle steel and outside steel pipe are consolidated
Fixed connection.
In a further embodiment, the angle steel is equal leg angle.The outside steel pipe is multiple, and its cross section is
∏ shapes.The corner point of the outside steel pipe is fixedly connected with ribbed stiffener.The outside steel pipe and shaped steel are not less than for strength grade
Q345 steel.
Further is criss-cross shaped steel there is provided a kind of interior girder system, including a cross section, and cross section is Γ shapes
Angle steel, is longitudinally disposed at the pressure house on angle steel and shape steel web along girder system, and two ends respectively with shape steel web
The pull bar that pressure house on pressure house and angle steel is fixedly connected, the angle steel is distributed in quadrangle.
In the above-described embodiments or in further embodiment, the angle steel is equal leg angle.
Finally there is provided a kind of method for preparing above-mentioned shaped steel-concrete filled steel tube cross section column, comprise the following steps：
Step 1. preparation outside steel pipe, shaped steel, angle steel and sleeve；
Step 2. is in each web region of shaped steel and the two sides welded sleeve of angle steel, in each web region of shaped steel
Genesis analysis of the sleeve along shaped steel, distance of the sleeve away from shaped steel central shaft is equal, sleeve the indulging along angle steel in angle steel two sides
To distribution；Ribbed stiffener is welded on outside steel pipe；
Step 3. installs pull bar, and clamp sleeve forms stable interior girder system；
Interior girder system is lifted into predetermined position by step 4., and shaped steel and angle steel are connected with dependency structure, positioning
Afterwards, outside steel pipe is welded and fixed with angle steel, and the bottom of outside steel pipe and external structure is welded and fixed；
Step 5. casting concrete, maintenance to regulation age.
Beneficial effect：The present invention improves load-bearing and the shear resistance of post component by steel pipe and interior girder system, and
Component ductility is significantly improved, structural seismic capacity enhancing；Further, interior truss carries out drawknot to steel pipe corner,
The Confinement effect effect of steel pipe is improved, and interior truss plays the effect of plane outer support to the web of shaped steel, reduces web
Flakiness ratio and ratio of height to thickness, improve web stability.In addition, the structure of the present invention solves prior art shaped steel location difficulty
Defect, shaped steel registration, and work progress is simple, construction cost is low.Finally, component of the invention can be pre- in factory
System, field operation content is few, and efficiency of construction is high, short time limit.
Brief description of the drawings
Fig. 1 is the cross-sectional view of shaped steel-concrete filled steel tube cross section column.
Fig. 2 is the dimensional structure diagram of interior girder system.
Fig. 3 is the work progress schematic diagram of shaped steel-concrete filled steel tube cross section column.
Embodiment
As shown in figure 1, shaped steel-concrete filled steel tube cross section column of the present invention mainly includes outside steel pipe 1, interior filling coagulation
Soil 7 and interior girder system.Wherein, outside steel pipe is the component that four cross sections are ∏ shapes, and its corner point, which is fixedly connected with, to be added
Strength rib 6.Outside steel pipe is fixedly connected with interior girder system, forms cross section for criss-cross cylinder.In the cylinder, shaped steel
Positioned at the centerline of cylinder, the center superposition with cylinder.
Interior girder system mainly includes shaped steel 2, angle steel 4, pressure house 5 and pull bar 3.The cross section of shaped steel is cross,
Its web is mutually perpendicular to or at grade, the end of web is provided with flange plate 21.The cross section of angle steel is Γ shapes, quantity
For 4.On four webs of shaped steel, there is sleeve 5 along longitudinal uniform welding, often the axis of the straight line where row's sleeve and shaped steel
Line is parallel and equal.On two sides of angle steel, there is rows of sleeve along longitudinal measure, often the straight line where row's sleeve and angle
The linea angulata of steel is parallel and equal.Sleeve of the two ends of pull bar 3 respectively with shape steel web and angle steel side is fixedly connected, when pull bar will
After the position of angle steel and shaped steel is fixed, interior girder system is formed.In the system, distance phase of the angle steel apart from shaped steel axis
It is located at the edge of square Deng, angle steel, pull bar is located on four sides of square.
After the outside steel pipe welding when angle steel and ∏ shapes is can be seen that with reference to Fig. 1 and Fig. 2, that is, it is ten to form cross section
There is cavity, Concrete Filled is in wherein in the cylinder of font, cylinder.
In a further embodiment, the angle steel is equal leg angle.The corner point of outside steel pipe, which is fixedly connected with, puts more energy into
Rib 6, to strengthen the physical property of outside steel pipe, prevents that it from deforming during use and casting concrete.In general, outside
The steel for being not less than Q345 for strength grade with shaped steel are managed by Baogang.
As shown in Figure 2 there is provided a kind of interior girder system, including a cross section is criss-cross shaped steel 2, and cross section is Γ shapes
Angle steel 4, be longitudinally disposed at the pressure house 5 on angle steel and shape steel web along girder system, and two ends respectively with shape steel web
On the pull bar 3 that is fixedly connected of pressure house and the pressure house on angle steel, the angle steel is distributed in quadrangle, false positioned at some
At the corner for the quadrangle thought, see on the whole, angle steel can surround a square cylinder.In this embodiment, angle steel is
Equal leg angle.
Further, Fig. 3 is gone to, the method for preparing above-mentioned shaped steel-concrete filled steel tube cross section column of the present invention, bag is described
Include following steps：
Step 1. preparation outside steel pipe, shaped steel, angle steel and sleeve；
Step 2. is in each web region of shaped steel and the two sides welded sleeve of angle steel, in each web region of shaped steel
Genesis analysis of the sleeve along shaped steel, distance of the sleeve away from shaped steel central shaft is equal, sleeve the indulging along angle steel in angle steel two sides
To distribution；Ribbed stiffener is welded on outside steel pipe；
Step 3. installs pull bar, and clamp sleeve forms stable interior girder system；
Interior girder system is lifted into predetermined position by step 4., and shaped steel and angle steel are connected with dependency structure, positioning
Afterwards, outside steel pipe is welded and fixed with angle steel, and the bottom of outside steel pipe and external structure is welded and fixed；
Step 5. casting concrete, maintenance to regulation age.
It can be seen that by the work progress：Make present method avoids the bander that matches somebody with somebody for carrying out cumbersome in construction,
The Confinement effect effect of cross tube is improved using interior truss technology, being accurately positioned and installing for steel pipe and shaped steel is realized
。
From above-described embodiment it can be seen that：The outside steel pipe of steel core concrete column can play a part of stirrup, while outsourcing
Steel pipe, which is also assisted in, undertakes vertical load.Therefore, the advantage of the comprehensive concrete filled steel tube of applicant and steel reinforced concrete structure, will
Two kinds of technologies, which are combined, proposes shaped steel-concrete filled steel tube cross section column component.
Meanwhile, there are two technical difficulties in steel pipe and the prefabricated making of shaped steel to solve prior art：1. with tradition
Circular section is different, and flakiness ratio of the star section geometry without stability and steel plate is larger, and plate is easily sent out in loading process
Raw drum is bent, and which results in the weakening of chapped pipe Confinement effect.2.Shaped steel location difficulty in steel pipe, can not during construction and installation
The distance and the mutual alignment relation of the two of accurate control shaped steel and steel pipe fitting.Applicant creatively proposes to use interior truss
Technology, by high-strength pull bar, drawknot is carried out by the turning of steel pipe, is that the steel plate of chapped pipe creates more rigidity fulcrums, together
When chapped pipe is entered be accurately positioned with shaped steel, drawknot is integrated.
Project case one
Shaped steel-concrete filled steel tube cross section column, it is characterised in that by outside steel pipe, shaped steel, high-strength pull bar, equal leg angle,
Pressure house, ribbed stiffener and interior fill concrete are constituted.
Outside steel pipe thickness is 3~5mm, and steel section size is designed calculating according to bearing capacity demand.The two is using strong
Grade be not less than Q345 grades of steel.
High-strength pull bar is formed using HRB500 grade high-strength reinforcement fabrications, and equal leg angle is using the shaped steel of L100 × 7.Pressure sleeve
The selection of cylinder should meet《Steel concrete supporting general technology code》（JGJ107-2003）Regulation.
Ribbed stiffener use with outside steel pipe identical material, play a part of to steel pipe angle point strengthen, arrangement spacing be
300mm.Interior fill concrete uses C50 concrete.The web of equal leg angle and shaped steel passes through high-strength pull bar and pressure house
Drawknot, forms the interior truss of geometrical stability.Interior truss is lifted, formulation position is placed to and carries out after the connection of bottom, is utilized
Interior truss is positioned to outside steel pipe and shaped steel, and outside steel pipe is welded on to the acra of equal leg angle, and by outside steel pipe bottom
Portion is welded on column root-plate.Then interior fill concrete is poured into steel pipe.In transport, hoisting process, moment of flexure is by interior truss
System undertakes, and shears control in web and high-strength pull bar shared by shaped steel, work progress and deforms in elastic range, and
Using 0.8 safety index.
During use, design xial feed is by outside steel pipe, shaped steel, interior fill concrete shared, lateral load
Undertaken by the web of outside steel pipe and shaped steel, flexural deformation meets plane cross-section assumption.
In the case, the work progress of shaped steel-concrete filled steel tube cross section column is as follows：
The prefabrication of outside steel pipe and shaped steel is assembled：
According to the design size of shaped steel-concrete filled steel tube cross section column, welded on the web of shaped steel and on equal leg angle
Connect pressure house.Ribbed stiffener is welded on outside steel pipe simultaneously.
High-strength pull bar and shaped steel and equal leg angle are subjected to assembled, compaction pressure sleeve, stable interior girder system is formed,
Prefabrication completes.
Construction and installation process：Before lifting, should calculate shaped steel and high-strength pull bar and the interior truss of equal leg angle formation by
Curved and shear capacity, and select rational Hoisting Program.The deformation of truss is in elastic range in being controlled during lifting, and is multiplied by
0.8 safety index.Interior truss is lifted into after predetermined installation site, carries out the connection of shaped steel, equal leg angle and substructure.
Then, outside steel pipe and shaped steel are positioned using interior truss, outside steel pipe is welded on to the acra of equal leg angle, and will be outer
Baogang's bottom of the tube is welded on column root-plate.Polishing outside steel pipe surface rusty stain, brushes antirust paint.After installing, internally
Outside steel pipe pours interior fill concrete, maintenance to regulation age.
During use, design xial feed is by outside steel pipe, shaped steel, interior fill concrete shared, lateral load
Undertaken by the web of outside steel pipe and shaped steel, flexural deformation meets plane cross-section assumption.After bearing load, interior fill concrete meeting
Outwards expansion, due to the effect of high-strength pull bar, outside steel pipe can internal fill concrete form inside constraint, so as to produce bright
Aobvious confined effect, and then make it that the Compressive Performance of fill concrete in mixed is improved；Also, in pressurized process Shaped Steel
Web has the trend of lateral bucking, but is due to the drawknot effect of high-strength pull bar, and the trend of unstability can effectively be alleviated,
The stress performance of post component obtains good raising.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of equivalents can be carried out to technical scheme, this
A little equivalents belong to protection scope of the present invention.
Claims (5)
1. prepare the method for shaped steel-concrete filled steel tube cross section column, it is characterised in that
The shaped steel-concrete filled steel tube cross section column includes outside steel pipe（1）, interior fill concrete（7）With interior girder system, institute
It is criss-cross shaped steel that interior girder system, which is stated, including a cross section（2）, cross section is the angle steel of Γ shapes（4）, it is vertical along girder system
To the pressure house being arranged on angle steel and shape steel web（5）, and two ends respectively with the pressure house and angle steel on shape steel web
On the pull bar that is fixedly connected of pressure house（3）, the angle steel is in quadrangle distribution；The angle steel and outside steel pipe, which are fixed, to be connected
Connect；
Methods described comprises the following steps：
Step 1. preparation outside steel pipe, shaped steel, angle steel and sleeve；
Step 2. is in each web region of shaped steel and the two sides welded sleeve of angle steel, the sleeve in each web region of shaped steel
Along the genesis analysis of shaped steel, distance of the sleeve away from shaped steel central shaft is equal, longitudinal direction of the sleeve along angle steel point in angle steel two sides
Cloth；Ribbed stiffener is welded on outside steel pipe；
Step 3. installs pull bar, and clamp sleeve forms stable interior girder system；
Interior girder system is lifted into predetermined position by step 4., and shaped steel and angle steel are connected with dependency structure, after positioning, will
Outside steel pipe is welded and fixed with angle steel, and the bottom of outside steel pipe and external structure are welded and fixed；
Step 5. casting concrete, maintenance to regulation age.
2. the method as claimed in claim 1 for preparing shaped steel-concrete filled steel tube cross section column, it is characterised in that the angle steel
For equal leg angle.
3. the method as claimed in claim 1 for preparing shaped steel-concrete filled steel tube cross section column, it is characterised in that the outsourcing
Steel pipe is multiple, and its cross section is ∏ shapes.
4. the method as claimed in claim 1 for preparing shaped steel-concrete filled steel tube cross section column, it is characterised in that the outsourcing
The corner point of steel pipe is fixedly connected with ribbed stiffener（6）.
5. the method as claimed in claim 1 for preparing shaped steel-concrete filled steel tube cross section column, it is characterised in that the outsourcing
Steel pipe and shaped steel are not less than Q345 steel for strength grade.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510524336.2A CN105220833B (en) | 2015-08-24 | 2015-08-24 | Interior girder system, shaped steel concrete filled steel tube cross section column and its construction method |
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| CN201510524336.2A CN105220833B (en) | 2015-08-24 | 2015-08-24 | Interior girder system, shaped steel concrete filled steel tube cross section column and its construction method |
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| CN105220833B true CN105220833B (en) | 2017-07-18 |
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