CN105220833A - Interior girder system, shaped steel-concrete filled steel tube cross section column and construction method thereof - Google Patents

Interior girder system, shaped steel-concrete filled steel tube cross section column and construction method thereof Download PDF

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Publication number
CN105220833A
CN105220833A CN201510524336.2A CN201510524336A CN105220833A CN 105220833 A CN105220833 A CN 105220833A CN 201510524336 A CN201510524336 A CN 201510524336A CN 105220833 A CN105220833 A CN 105220833A
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China
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steel
angle
shaped steel
shaped
column
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CN201510524336.2A
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Chinese (zh)
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CN105220833B (en
Inventor
伍凯
曹平周
张贺
毛范燊
冯宁宁
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河海大学
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Abstract

The invention discloses a kind of interior girder system, shaped steel-concrete filled steel tube cross section column and construction method thereof, wherein said shaped steel-concrete filled steel tube cross section column comprises outside steel pipe, interior fill concrete and interior girder system, it is criss-cross shaped steel that described interior girder system comprises a cross section, cross section is the angle steel of Γ shape, the pressure house on angle steel and shape steel web is longitudinally arranged at along girder system, with the pull bar that two ends are fixedly connected with the pressure house on shape steel web and the pressure house on angle steel respectively, described angle steel is quadrangle distribution; Described angle steel is fixedly connected with outside steel pipe.The present invention, by steel pipe and interior girder system, improve load-bearing and the shear resistance of post component, and component ductility obtains remarkable improvement, and structural seismic capacity strengthens; The web of interior truss to shaped steel plays the effect of plane outer support, reduces flakiness ratio and the ratio of height to thickness of web, improves the stability of web.

Description

Interior girder system, shaped steel-concrete filled steel tube cross section column and construction method thereof
Technical field
The present invention relates to building hetermorphiscal column, especially a kind of shaped steel-steel core concrete column and construction method thereof.
Background technology
Not bearing load in the infilled wall design of frame construction, the load of floor is finally all born by frame column and is passed to lower one deck.Along with the number of plies of building construction increases gradually, the load that frame column is born also improves constantly, and this just requires the continuous increase of column section.Traditional rectangular column cross section, because cross section is comparatively large, can gives prominence to metope, cause taking of the interior space.For addressing this problem, part building adopts hetermorphiscal column at structure corner place at present.
But also there is a lot of problems in existing hetermorphiscal column.
Summary of the invention
Applicant finds after deliberation with after experiment: in order to improve vertical load and the transverse load bearing capacity of shaped rc columns further, and not increasing the sectional area of hetermorphiscal column, can bury shaped steel underground in hetermorphiscal column, forms steel reinforced concrete special-shaped columns.Meanwhile, for avoiding profile steel concrete column generation bond damage, stirrup should be set in hetermorphiscal column.But because shaped steel in post is erose, stirrup cannot directly be enclosed within shaped steel, stirrup must being blocked is connected on shape steel web or punches on shaped steel passes stirrup.Therefore prior art not only reduces the stress performance of stirrup and shaped steel, and complicated operation is loaded down with trivial details, the time and fund cost high.
Goal of the invention a: object is to provide a kind of shaped steel-concrete filled steel tube cross section column, to solve the problems referred to above that prior art exists.Further object is to provide 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 characterized in that, comprise outside steel pipe, interior fill concrete and interior girder system, it is criss-cross shaped steel that described interior girder system comprises a cross section, cross section is the angle steel of Γ shape, longitudinally be arranged at the pressure house on angle steel and shape steel web along girder system, with the pull bar that two ends are fixedly connected with the pressure house on shape steel web and the pressure house on angle steel respectively, described angle steel is quadrangle distribution; Described angle steel is fixedly connected with outside steel pipe.
In a further embodiment, described angle steel is equal leg angle.Described outside steel pipe is multiple, and its cross section is ∏ shape.The corner point of described outside steel pipe is fixedly connected with stiffening rib.Described outside steel pipe and shaped steel are the steel that strength grade is not less than Q345.
Further, a kind of interior girder system is provided, comprising a cross section is criss-cross shaped steel, cross section is the angle steel of Γ shape, the pressure house on angle steel and shape steel web is longitudinally arranged at along girder system, with the pull bar that two ends are fixedly connected with the pressure house on shape steel web and the pressure house on angle steel respectively, described angle steel is quadrangle distribution.
In the above-described embodiments or further in embodiment, described angle steel is equal leg angle.
Finally, a kind of method preparing above-mentioned shaped steel-concrete filled steel tube cross section column is provided, comprises the steps:
Step 1. prepares outside steel pipe, shaped steel, angle steel and sleeve;
The each web region of step 2. at shaped steel and the two sides welded sleeve of angle steel, the sleeve in each web region of shaped steel is along the genesis analysis of shaped steel, and sleeve is equal apart from the distance of shaped steel central axis, and the sleeve in angle steel two sides is along the genesis analysis of angle steel; Outside steel pipe welds stiffening rib;
Step 3. installs pull bar, clamp sleeve, forms stable interior girder system;
Interior girder system is lifted into preposition by step 4., is connected by shaped steel with angle steel with dependency structure, behind location, outside steel pipe and angle steel is welded and fixed, and is welded and fixed in the bottom of outside steel pipe and external structure;
Step 5. concreting, maintenance is to specifying the length of time.
Beneficial effect: the present invention, by steel pipe and interior girder system, improve load-bearing and the shear resistance of post component, and component ductility obtains remarkable improvement, structural seismic capacity strengthens; Further, interior truss carries out drawknot to steel pipe corner, improves the Confinement effect effect of steel pipe, and the web of interior truss to shaped steel plays the effect of plane outer support, reduces flakiness ratio and the ratio of height to thickness of web, improves the stability of web.In addition, structure of the present invention solves the defect of prior art shaped steel location difficulty, shaped steel registration, and work progress is simple, and construction cost is low.Finally, component of the present invention can be prefabricated in factory, and field operation content is few, and efficiency of construction is high, and the duration is short.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of shaped steel-concrete filled steel tube cross section column.
Fig. 2 is the perspective view of interior girder system.
Fig. 3 is the work progress schematic diagram of shaped steel-concrete filled steel tube cross section column.
Detailed description of the invention
As shown in Figure 1, shaped steel of the present invention-concrete filled steel tube cross section column mainly comprises outside steel pipe 1, interior fill concrete 7 and interior girder system.Wherein, the component of outside steel pipe to be four cross sections be ∏ shape, its corner point is fixedly connected with stiffening rib 6.Outside steel pipe is fixedly connected with interior girder system, and forming cross section is criss-cross cylinder.In this cylinder, shaped steel is positioned at the centerline of cylinder, with the center superposition of cylinder.
Interior girder system mainly comprises shaped steel 2, angle steel 4, pressure house 5 and pull bar 3.The cross section of shaped steel is cross, and its web mutually vertically or at grade, the end of web is provided with frange plate 21.The cross section of angle steel is Γ shape, and quantity is 4.On four webs of shaped steel, longitudinally uniform welding has sleeve 5, often arranges the straight line at sleeve place equal with the axis parallel of shaped steel.On two sides of angle steel, be longitudinally welded with sleeve in a row, the straight line often arranging sleeve place is parallel with the linea angulata of angle steel and equal.The two ends of pull bar 3 are fixedly connected with the sleeve of shape steel web with angle steel side respectively, after pull bar is fixing by the position of angle steel and shaped steel, and girder system in being formed.In this system, the distance of angle steel distance shaped steel axis is equal, and angle steel is positioned at foursquare edge, and pull bar is positioned on foursquare four limits.
Composition graphs 1 and Fig. 2 can find out, after angle steel welds with the outside steel pipe of ∏ shape, namely forming cross section is criss-cross cylinder, has cavity in cylinder, and Concrete Filled is in wherein.
In a further embodiment, described angle steel is equal leg angle.The corner point of outside steel pipe is fixedly connected with stiffening rib 6, to strengthen the physical property of outside steel pipe, prevent its use and concreting process in be out of shape.In general, outside steel pipe and shaped steel are the steel that strength grade is not less than Q345.
As shown in Figure 2, a kind of interior girder system is provided, comprising a cross section is criss-cross shaped steel 2, cross section is the angle steel 4 of Γ shape, is longitudinally arranged at the pressure house 5 on angle steel and shape steel web, with the pull bar 3 that two ends are fixedly connected with the pressure house on shape steel web and the pressure house on angle steel respectively along girder system, described angle steel is quadrangle distribution, be positioned at the corner place of certain imaginary quadrangle, see on the whole, angle steel can surround a foursquare cylinder.In this embodiment, angle steel is equal leg angle.
Further, forward Fig. 3 to, describe the method for preparation of the present invention above-mentioned shaped steel-concrete filled steel tube cross section column, comprise the steps:
Step 1. prepares outside steel pipe, shaped steel, angle steel and sleeve;
The each web region of step 2. at shaped steel and the two sides welded sleeve of angle steel, the sleeve in each web region of shaped steel is along the genesis analysis of shaped steel, and sleeve is equal apart from the distance of shaped steel central axis, and the sleeve in angle steel two sides is along the genesis analysis of angle steel; Outside steel pipe welds stiffening rib;
Step 3. installs pull bar, clamp sleeve, forms stable interior girder system;
Interior girder system is lifted into preposition by step 4., is connected by shaped steel with angle steel with dependency structure, behind location, outside steel pipe and angle steel is welded and fixed, and is welded and fixed in the bottom of outside steel pipe and external structure;
Step 5. concreting, maintenance is to specifying the length of time.
Can be found out by this work progress: present method avoids and in construction, to carry out the loaded down with trivial details bander that joins do, in utilizing, truss technology improves the Confinement effect effect of cross tube, achieves accurate location and the installation of steel pipe and shaped steel.
As can be seen from above-described embodiment: the outside steel pipe of steel core concrete column can play the effect of stirrup, outside steel pipe also participates in bearing vertical load simultaneously.Therefore, two kinds of combine with technique are proposed shaped steel-concrete filled steel tube cross section column component by the advantage of the comprehensive encased structures of applicant and steel reinforced concrete structure.
Simultaneously, there are two technical difficulties: 1. different from traditional round cross section to solve prior art when the prefabricated making of steel pipe and shaped steel, why not star section several has stability and the flakiness ratio of steel plate is larger if being, easily to there is drum in plate bent in loading process, which results in the weakening of chapped pipe Confinement effect.2。Shaped steel, in steel pipe inner position difficulty, accurately cannot control distance and the mutual alignment relation of the two of shaped steel and steel pipe fitting during construction and installation.Applicant creatively proposes to adopt interior truss technology, by high-strength pull bar, drawknot is carried out at the turning of steel pipe, and more rigidity fulcrum created by the steel plate for chapped pipe, chapped pipe is entered simultaneously accurately locate with shaped steel, drawknot is integrated.
Project case one
Shaped steel-concrete filled steel tube cross section column, is characterized in that being made up of outside steel pipe, shaped steel, high-strength pull bar, equal leg angle, pressure house, stiffening rib and interior fill concrete.
Outside steel pipe thickness is 3 ~ 5mm, and steel section size carries out designing and calculating according to bearing capacity demand.The two all adopts strong grade to be not less than the steel of Q345 level.
High-strength pull bar adopts HRB500 grade high-strength reinforcement fabrication to form, and equal leg angle adopts L100 × 7 shaped steel.The selection of pressure house should meet the regulation of " steel concrete supporting current techique code " (JGJ107-2003).
Stiffening rib adopts the material identical with outside steel pipe, and play the effect strengthened steel pipe angle point, arrangement pitch is 300mm.Interior fill concrete adopts C50 concrete.The web of equal leg angle and shaped steel passes through the drawknot of high-strength pull bar and pressure house, defines the interior truss of geometrical stability.By the lifting of interior truss, be placed to and formulate position and carry out after bottom connects, utilizing interior truss to position outside steel pipe and shaped steel, outside steel pipe being welded on the acra of equal leg angle, and by outside steel pipe bottom welding on column root-plate.Then in steel pipe, interior fill concrete is built.Transport, in hoisting process, moment of flexure is born by interior girder system, and shearing is by the web of shaped steel and high-strength pull bar shared, and in work progress, controlling distortion is in elastic range, and adopts the safety index of 0.8.
In use procedure, design axial load is by outside steel pipe, shaped steel, interior fill concrete shared, and transverse load is born by the web of outside steel pipe and shaped steel, and flexural deformation meets plane hypothesis.
In this 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, welding pressure sleeve on the web of shaped steel and on equal leg angle.On outside steel pipe, weld stiffening rib simultaneously.
Undertaken assembled by high-strength pull bar and shaped steel and equal leg angle, compaction pressure sleeve, form stable interior girder system, prefabrication completes.
Construction and installation process: before lifting, should calculate the interior truss that shaped steel and high-strength pull bar and equal leg angle formed by curved and shear capacity, and select rational Hoisting Program.In controlling during lifting, the distortion of truss is in elastic range, and is multiplied by the safety index of 0.8.After interior truss is lifted into predetermined installation site, carry out the connection of shaped steel, equal leg angle and substructure.Then, in utilizing, truss positions outside steel pipe and shaped steel, outside steel pipe is welded on the acra of equal leg angle, and by outside steel pipe bottom welding on column root-plate.Polishing outside steel pipe surface rusty stain, brushes rustproof paint.After installing, internally outside steel pipe builds interior fill concrete, and maintenance is to specifying the length of time.
In use procedure, design axial load is by outside steel pipe, shaped steel, interior fill concrete shared, and transverse load is born by the web of outside steel pipe and shaped steel, and flexural deformation meets plane hypothesis.After bearing load, interior fill concrete can outwards expand, and due to the effect of high-strength pull bar, outside steel pipe can form inside constraint by internal fill concrete, thus produces obvious confined effect, and then the Compressive Performance of mixed interior fill concrete is improved; Further, have the trend of lateral bucking at the web of pressurized process Shaped Steel, but due to the drawknot effect of high-strength pull bar, the trend of unstability can be alleviated effectively, and the stress performance of post component obtains good raising.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple equivalents to technical scheme of the present invention, these equivalents all belong to protection scope of the present invention.

Claims (8)

1. shaped steel-concrete filled steel tube cross section column, is characterized in that, comprises outside steel pipe (1), interior fill concrete (7) and interior girder system,
It is criss-cross shaped steel (2) that described interior girder system comprises a cross section, cross section is the angle steel (4) of Γ shape, the pressure house (5) on angle steel and shape steel web is longitudinally arranged at along girder system, with the pull bar (3) that two ends are fixedly connected with the pressure house on shape steel web and the pressure house on angle steel respectively, described angle steel is quadrangle distribution; Described angle steel is fixedly connected with outside steel pipe.
2. shaped steel-concrete filled steel tube cross section column as claimed in claim 1, it is characterized in that, described angle steel is equal leg angle.
3. shaped steel-concrete filled steel tube cross section column as claimed in claim 1, it is characterized in that, described outside steel pipe is multiple, and its cross section is ∏ shape.
4. shaped steel-concrete filled steel tube cross section column as claimed in claim 1, it is characterized in that, the corner point of described outside steel pipe is fixedly connected with stiffening rib (6).
5. shaped steel-concrete filled steel tube cross section column as claimed in claim 1, it is characterized in that, described outside steel pipe and shaped steel are the steel that strength grade is not less than Q345.
6. girder system in a kind, it is characterized in that, comprising a cross section is criss-cross shaped steel (2), cross section is the angle steel (4) of Γ shape, the pressure house (5) on angle steel and shape steel web is longitudinally arranged at along girder system, with the pull bar (3) that two ends are fixedly connected with the pressure house on shape steel web and the pressure house on angle steel respectively, described angle steel is quadrangle distribution.
7. interior girder system as claimed in claim 6, it is characterized in that, described angle steel is equal leg angle.
8. prepare the method for the shaped steel-concrete filled steel tube cross section column described in any one of claim 1 to 5, it is characterized in that, comprise the steps:
Step 1. prepares outside steel pipe, shaped steel, angle steel and sleeve;
The each web region of step 2. at shaped steel and the two sides welded sleeve of angle steel, the sleeve in each web region of shaped steel is along the genesis analysis of shaped steel, and sleeve is equal apart from the distance of shaped steel central axis, and the sleeve in angle steel two sides is along the genesis analysis of angle steel; Outside steel pipe welds stiffening rib;
Step 3. installs pull bar, clamp sleeve, forms stable interior girder system;
Interior girder system is lifted into preposition by step 4., is connected by shaped steel with angle steel with dependency structure, behind location, outside steel pipe and angle steel is welded and fixed, and is welded and fixed in the bottom of outside steel pipe and external structure;
Step 5. concreting, maintenance is to specifying the length of time.
CN201510524336.2A 2015-08-24 2015-08-24 Interior girder system, shaped steel concrete filled steel tube cross section column and its construction method CN105220833B (en)

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN106223542A (en) * 2016-09-23 2016-12-14 中建八局第建设有限公司 A kind of abnormity speed connects formula steel column and construction method thereof
CN107366362A (en) * 2017-09-09 2017-11-21 北京工业大学 A kind of assembling type steel structure Special-Shaped Column beam column node connection device with diagonal brace
CN107489197A (en) * 2017-09-09 2017-12-19 北京工业大学 A kind of assembling type steel structure H profile steel post beam column node connection device with diagonal brace
CN109025062A (en) * 2018-08-24 2018-12-18 西安建筑科技大学 A kind of abnormity Multi-cavity steel-concrete combination column
CN109610732A (en) * 2018-12-07 2019-04-12 中国建筑西北设计研究院有限公司 A kind of steel pipe concrete profiled pile of internal frame
CN109610730A (en) * 2018-12-07 2019-04-12 中国建筑西北设计研究院有限公司 A kind of steel pipe concrete profiled pile for strengthening skeleton with inner corner trim
CN110056130A (en) * 2019-04-16 2019-07-26 武汉大学 FRP pipe profile sea sand fast hardening concrete coupled column

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CN103790243A (en) * 2014-02-27 2014-05-14 南京工业大学 Steel-reinforced concrete cross-shaped column-steel beam connection joint
CN104088399A (en) * 2014-07-02 2014-10-08 沈阳建筑大学 Cross-shaped steel pipe-steel rib recycled concrete combination column

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WO2008133460A1 (en) * 2007-04-26 2008-11-06 M.C.S.Tech Composite concrete column and construction method using the same
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106223542A (en) * 2016-09-23 2016-12-14 中建八局第建设有限公司 A kind of abnormity speed connects formula steel column and construction method thereof
CN106223542B (en) * 2016-09-23 2018-07-13 中建八局第一建设有限公司 A kind of abnormity quick access formula steel column and its construction method
CN107366362A (en) * 2017-09-09 2017-11-21 北京工业大学 A kind of assembling type steel structure Special-Shaped Column beam column node connection device with diagonal brace
CN107489197A (en) * 2017-09-09 2017-12-19 北京工业大学 A kind of assembling type steel structure H profile steel post beam column node connection device with diagonal brace
CN109025062A (en) * 2018-08-24 2018-12-18 西安建筑科技大学 A kind of abnormity Multi-cavity steel-concrete combination column
CN109025062B (en) * 2018-08-24 2020-06-30 西安建筑科技大学 Special-shaped multi-cavity steel-concrete combined column
CN109610732A (en) * 2018-12-07 2019-04-12 中国建筑西北设计研究院有限公司 A kind of steel pipe concrete profiled pile of internal frame
CN109610730A (en) * 2018-12-07 2019-04-12 中国建筑西北设计研究院有限公司 A kind of steel pipe concrete profiled pile for strengthening skeleton with inner corner trim
CN110056130A (en) * 2019-04-16 2019-07-26 武汉大学 FRP pipe profile sea sand fast hardening concrete coupled column

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