CN102535749A - Double-function multi-cavity steel tube concrete column provided with soft steel sleeve at bottom, and manufacturing method thereof - Google Patents

Double-function multi-cavity steel tube concrete column provided with soft steel sleeve at bottom, and manufacturing method thereof Download PDF

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Publication number
CN102535749A
CN102535749A CN2011104603485A CN201110460348A CN102535749A CN 102535749 A CN102535749 A CN 102535749A CN 2011104603485 A CN2011104603485 A CN 2011104603485A CN 201110460348 A CN201110460348 A CN 201110460348A CN 102535749 A CN102535749 A CN 102535749A
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China
Prior art keywords
cavity
steel
sleeve pipe
pipe
steel sleeve
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CN2011104603485A
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Chinese (zh)
Inventor
曹万林
王智慧
惠存
董宏英
张建伟
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Beijing University of Technology
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Beijing University of Technology
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Priority to CN2011104603485A priority Critical patent/CN102535749A/en
Publication of CN102535749A publication Critical patent/CN102535749A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a double-function multi-cavity steel tube concrete column provided with a soft steel sleeve at the bottom, belonging to the building field. The soft steel sleeve (3) is arranged at the bottom of the common multi-cavity steel tube concrete; and a high-performance composite material layer (6) is embedded between the soft steel sleeve (3) and a multi-cavity steel tube (1). After the soft steel sleeve (3) is added at the outer side of the area of a plastic hinge at the bottom of the multi-cavity steel tube concrete column, the soft steel sleeve (3) firstly yields so as to consume the energy of an earthquake input structure, and the resistance and the ductility of the soft steel sleeve can be exerted until the soft steel sleeve (3) is damaged, so that early damage for a high-strength steel plate can be prevented and delayed.

Description

The difunctional multi-cavity body steel core concrete column and the practice of bottom band mild steel sleeve pipe
Technical field
The present invention is the difunctional multi-cavity body steel core concrete column and the practice of a kind of bottom band mild steel sleeve pipe, belongs to a kind of novel energy-consumption shock-absorbing member, is mainly used in the energy dissipation and damping control field in the building structure.
Background technology
Society is in progress, and people's living standard is also improving constantly, and various forms of buildings emerge in an endless stream, and satisfy the building of different functions of use and also arise at the historic moment.The emerge in multitude of especially high-rise, super highrise building, this just needs the construction that new theory and new technology support this type building.Under this prerequisite, multi-cavity body encased structures also just produces thereupon.
Multi-cavity body concrete filled steel tube is made up of steel pipe cavity and two kinds of materials of concrete, because the effect of cavity inner concrete, the stability of steel pipe wallboard improves a lot, and delays or has avoided the too early generation cripling of steel pipe wallboard; Steel pipe is to the effect of contraction of its core concrete simultaneously; Make concrete be in the stress state of high complexity, thereby concrete intensity is improved, plasticity and toughness properties improve; The combination of two kinds of materials has remedied shortcoming separately, makes its material property obtain giving full play to.
In the huge post pressurized of multi-cavity body concrete filled steel tube performance test, find also to come with some shortcomings in the multi-cavity body encased structures function admirable.Encased structures destroys and generally occurs in the bottom under severe earthquake action, and it is bent that local drum takes place the cavity wallboard easily; Cavity wallboard bearing capacity descends, and causes cavity bight weld seam to be torn, and inner concrete effect of contraction is weakened; The core concrete of the outside convex camber corresponding site of steel plate is serious crisp broken, and this moment, its superstructure possibly also not reach surrender, and the performance of material is not fully exerted; Caused the serious waste of material, a large amount of earthquake phenomenons have also proved this point.
The seismic design that is applied as building of mild-steel energy-consumption cushion technique and high tenacity material and seismic hardening provide a brand-new thinking, realize damping control and anti-seismic performance for high-rise and super highrise building an effective approach is provided.
Summary of the invention
Technical problem to be solved by this invention is: improve the anti-seismic performance of multi-cavity body encased structures, delay or avoid because encased structures bottom steel small drum for marking time is bent, the destruction that causes structure or member is given full play to the performance of material.The present invention has proposed the difunctional multi-cavity body steel core concrete column and the practice of bottom band mild steel sleeve pipe in order to address this problem.
The difunctional multi-cavity body steel core concrete column of bottom band mild steel sleeve pipe is characterized in that: it comprises multi-cavity body steel pipe 1, core concrete 2, mild steel sleeve pipe 3, connects shearing bolt 4, nut 5 and high-ductility composite material layer 6; Original by multi-cavity body steel pipe 1 and the exterior bottom interpolation mild steel sleeve pipe 3 that is filled in the common multi-cavity body steel core concrete column that the core concrete 2 multi-cavity body steel pipe 1 in constitutes; Coagulate at mild steel sleeve pipe 3 and original between the multi-cavity body steel pipe 1 of earth pillar and embed high-performance composite materials layer 6, be connected with shearing bolt 4 between multi-cavity body steel pipe 1 and the mild steel sleeve pipe 3; The mild steel sleeve bottom should put in the basis and with its anchoring.
Said concrete column cross section is a rectangle; High-ductility composite material layer 6 is made up of polymer modified cement-concrete, rubber fine aggregate cement concrete, general fibre concrete and high tenacity cement based fibrous concrete.
At corresponding position two-way the have bolt hole of mild steel sleeve pipe 3 with multi-cavity body steel pipe 1 unified level height, the diameter of perforate is a bit larger tham the diameter of bolt on the mild steel sleeve pipe, and the diameter that connects shearing bolt 4 is not less than the steel plate thickness of mild steel sleeve pipe and multi-cavity body steel pipe; The quantity of perforate is no less than two rows; The level of every row's bolt hole is not more than 200mm with vertical spacing; Guarantee that mild steel sleeve pipe 3 and multi-cavity body steel pipe 1 contact closely with the high-ductility composite material layer 6 that embeds; And the hole clear distance of same row's different directions is not less than 20mm, makes can connect shearing bolt 4 and can pass multi-cavity body steel pipe 1 smoothly with mild steel sleeve pipe 3 and reduce the weakening to same horizontal section; The wall thickness of pipe in the wall thickness of mild steel sleeve pipe 3 is not less than; Mild steel sleeve pipe 3 connects through being connected shearing bolt 4 with multi-cavity body steel pipe 1, and forms precompression; The thickness of said high-ductility composite material layer 6 is not less than the thickness of mild steel sleeve pipe 3, and is not less than 20mm.
Said mild steel sleeve pipe 3 height above ground level or flooring are preferably 1.0h; Wherein h is long limit, rectangular steel pipe cross section size; Just strengthen the plastic hinge territory of steel core concrete column, delay or avoid the destruction of concrete filled steel tube column bottom, improve its seismic bearing capacity and energy dissipation capacity.
The difunctional multi-cavity body steel core concrete column of said bottom band mild steel sleeve pipe is made as follows:
1) at multi-cavity body steel pipe 1 and mild steel sleeve pipe 3 corresponding position two-way reservation bolt hole;
2) to multi-cavity body rectangular steel-tube concrete column, corresponding nut 5 in the lateral surface correspondence position welding at the bolt hole place that multi-cavity body steel pipe 1 is reserved;
3) multi-cavity body steel pipe 1 and bottom mild steel sleeve pipe 3 are carried out correct positioning, make bolt hole on its same row on same level height;
4) penetrate connection shearing bolt 4 at the bolt hole place that reserves, tighten connection shearing bolt 4 through the nut 5 of inside, completion mild steel sleeve pipe 3 is connected with multi-cavity body steel pipe 1, between mild steel sleeve pipe 3 and multi-cavity body steel pipe 1, embeds high-ductility composite material layer 6 then;
5) perfusion core concrete 2 in multi-cavity body steel pipe 1 is the difunctional multi-cavity body steel core concrete column that the mild steel sleeve pipe is with in the bottom after the moulding.
Compare with common multi-cavity body steel core concrete column, the present invention has the following advantages: under the frequently occurred earthquake effect, multi-cavity body concrete filled steel tube is stressed less, at this moment bottom mild steel sleeve pipe 3 and multi-cavity body steel pipe 1 friction energy-dissipating under bolt 4 pressure effects; This moment, the existence of bolt 4 not only improved its friction energy-dissipating ability, and mild steel sleeve pipe 3 and multi-cavity body steel pipe 1 are connected as a single entity, and its integral working is good, and rigidity is big, and intensity is also big, has good seismic bearing capacity; Under the rarely occurred earthquake effect, it is serious that bolt 4 is cut damage, and the contact of multi-cavity body steel pipe 1 and mild steel sleeve pipe 3 weakens; The co-operation performance degradation, its ductility and power consumption effect are given full play in multi-cavity body steel pipe 1,3 beginnings of mild steel sleeve pipe separately, and structure collectivity rigidity reduces; Natural vibration period is elongated, and geological process reduces, after the concrete filled steel tube column bottom increases mild steel sleeve pipe 3 and high-ductility composite material layer 6; Be equivalent to increase anti-vibration defense lines one, improved the safety of structure.
The tradition high tensile steel tube can bear bigger load action, but bent or rupture failure are roused in large deformation down easily repeatedly.The low cycle repetitive load experimental study shows, surrender, flexing and the rupture failure of common multi-cavity body steel core concrete column mainly concentrates on the steel pipe root.The outside in the scope of plastic hinge territory, concrete filled steel tube column bottom adds mild steel sleeve pipe 3; And embedding high-ductility composite material layer 6; Rarely occurred earthquake effect at first surrender of outside mild steel sleeve pipe 3 down; Consume the energy of earthquake input structure, can bring into play its drag and ductility effect, played preventing or delay the too early damage of high-strength steel sheet and the effect of destruction until structure or component damage; Because the existence of mild steel sleeve pipe 3 after multi-cavity body steel pipe steel plate weld seam is torn, can stop concrete distortion, and is stressed favourable to structural entity, this is the difunctional effect of bottom band mild steel sleeve pipe just.
Among the present invention, steel core concrete column elder generation concreting 2, the 4 generation precompressions that tight a bolt again embed high-ductility composite material layer 6 then; The rigidity of mild steel sleeve pipe 3 and multi-cavity body steel pipe 1 connecting portion with respect to steel duct concrete 2 rigidity a little less than; Formed an iron hand in a velvet glove structure; Help improving the energy dissipation capacity of this structure under geological process; Enough give full play to the energy dissipation capacity of outside mild-steel energy-consumption steel pipe 3 and multi-cavity body steel pipe 1, make it under geological process, show more excellent performance.
Description of drawings
Fig. 1 is the floor map of the difunctional multi-cavity body steel core concrete column of bottom band mild steel sleeve pipe;
Fig. 2 is the A-A sectional drawing among Fig. 1;
Fig. 3 is the B-B sectional drawing among Fig. 1;
Wherein: pipe in the 1-multi-cavity body, 2-core concrete, 3-mild steel sleeve pipe, 4-connect shears bolt, 5-nut, 6-high-ductility composite material layer, 7-flooring or ground.
The specific embodiment
Below in conjunction with accompanying drawing and instantiation the present invention is further specified:
Embodiment 1
As shown in Figure 1, the difunctional multi-cavity body steel core concrete column of bottom band mild steel sleeve pipe comprises multi-cavity body steel pipe 1, core concrete 2, mild steel sleeve pipe 3, connection shearing bolt 4, nut 5 and the high-ductility composite material layer 6 of rectangle.The sectional drawing of the difunctional multi-cavity body steel core concrete column of this bottom band mild steel sleeve pipe as shown in Figures 2 and 3.The difunctional multi-cavity body steel core concrete column of bottom band mild steel sleeve pipe is to add mild steel sleeve pipe 3 in the exterior bottom of common multi-cavity body steel core concrete column; Mild steel sleeve pipe 3 is sheared bolt 4 connections, the middle high-ductility composite material layer 6 that embeds with former multi-cavity body steel pipe 1 through being connected;
The height of mild steel sleeve pipe 3 should be taken as 1.0h (h is the long limit size of square-section steel pipe), just strengthens the plastic hinge territory of steel core concrete column, delays or avoid the destruction of concrete filled steel tube column bottom, improves its seismic bearing capacity and energy dissipation capacity; Mild steel sleeve pipe 3 is arranged along multi-cavity body steel pipe 1 border; In mild steel sleeve pipe 3 and the two-way perforate in 1 corresponding position of multi-cavity body steel pipe; The quantity of perforate should be according to the actual requirement of engineering setting; And should not be less than two rows, and the level of every row's bolt hole should not contact with multi-cavity body steel pipe 1 closely to guarantee mild steel sleeve pipe 3 greater than 200mm with vertical spacing; The Kong Jing of same row's different directions is apart from should not be less than 20mm, makes bolt 4 pass multi-cavity body steel pipe 1 smoothly with mild steel sleeve pipe 3 and reduce the weakening to same cross section;
The thickness of mild steel sleeve pipe 3 should not be less than the wall thickness of multi-cavity body steel pipe 1, and mild steel sleeve pipe 3 is sheared bolt 4 connections with multi-cavity body steel pipe 1 through being connected; Said connection is sheared the quantity and the diameter of bolt 4 and should be arranged according to actual needs; The diameter of bolt should not be less than the steel plate thickness of mild steel sleeve pipe 3 and multi-cavity body steel pipe 1; Through connecting shearing bolt 4 multi-cavity body steel pipe 1 and mild steel sleeve pipe 3 are connected as one; Co-operation is accomplished connection after-pouring concrete, is the difunctional multi-cavity body steel core concrete column of bottom band mild steel sleeve pipe after the moulding.
The difunctional multi-cavity body steel core concrete column of the bottom band mild steel sleeve pipe in the present embodiment can be made as follows:
1) at multi-cavity body steel pipe 1 and mild steel sleeve pipe 3 corresponding position two-way reservation bolt holes, the reserving hole diameter of inner and outer pipes is identical, and the bolt hole of same area must pass so that connect shearing bolt 4 on same level height smoothly; The quantity of prepared screw-bolt hole and diameter should be according to the actual requirement of engineering settings, and are no less than two rows, and the Kong Jing of same row's different directions is not apart from should be less than 20mm, and connecting the diameter of shearing bolt 4 should not be less than the thickness of mild steel sleeve pipe 3 and multi-cavity body steel pipe 1;
Corresponding nut 5 is gone up in the lateral surface welding at the bolt hole place that 2) multi-cavity body steel pipe 1 is reserved;
3) multi-cavity body steel pipe 1 and mild steel sleeve pipe 3 are carried out correct positioning, make bolt hole on their same rows on same level height;
4) penetrate connection at the bolt hole place that reserves and shear bolt 4, tighten through the nut 5 of inside, completion multi-cavity body steel pipe 1 is connected with mild steel sleeve pipe 3, between mild steel sleeve pipe 3 and multi-cavity body steel pipe 1, embeds high-ductility composite material layer 6;
5) perfusion core concrete 2 in multi-cavity body steel pipe 1 is the difunctional multi-cavity body steel core concrete column that the mild steel sleeve pipe is with in the bottom after the moulding.
More than be exemplary embodiments of the present invention, enforcement of the present invention is not limited thereto.

Claims (5)

1. the difunctional multi-cavity body steel core concrete column of bottom band mild steel sleeve pipe is characterized in that: it comprises multi-cavity body steel pipe (1), core concrete (2), mild steel sleeve pipe (3), connects shearing bolt (4), nut (5) and high-ductility composite material layer (6); Original by multi-cavity body steel pipe (1) and the exterior bottom that is filled in the common multi-cavity body steel core concrete column that the core concrete (2) in the multi-cavity body steel pipe (1) constitutes add mild steel sleeve pipe (3); Coagulate at mild steel sleeve pipe (3) and original between the multi-cavity body steel pipe (1) of earth pillar and embed high-performance composite materials layers (6), be connected with shearing bolt (4) between multi-cavity body steel pipe (1) and the mild steel sleeve pipe (3); Mild steel sleeve pipe (3) bottom should put in the basis and with its anchoring.
2. the difunctional multi-cavity body steel core concrete column of bottom according to claim 1 band mild steel sleeve pipe, it is characterized in that: said multi-cavity body steel pipe (1) and concrete column cross section are rectangle; High-ductility composite material layer (6) is made up of polymer modified cement-concrete, rubber fine aggregate cement concrete, general fibre concrete and high tenacity cement based fibrous concrete.
3. the difunctional multi-cavity body steel core concrete column of bottom according to claim 1 band mild steel sleeve pipe; It is characterized in that: at the two-way bolt hole that has of mild steel sleeve pipe (3) and the corresponding position of multi-cavity body steel pipe (1); The diameter of perforate is a bit larger tham the diameter of bolt on the mild steel sleeve pipe, and the diameter that connects shearing bolt (4) is not less than the steel plate thickness of mild steel sleeve pipe (3) and multi-cavity body steel pipe (1); The quantity of perforate is no less than two rows; The level of every row's bolt hole is not more than 200mm with vertical spacing; Mild steel sleeve pipe (3) and multi-cavity body steel pipe (1) contact closely with the high-ductility composite material layer (6) that embeds; And the hole clear distance of same row's different directions is not less than 20mm, connects shearing bolt (4) and passes multi-cavity body steel pipe (1) and mild steel sleeve pipe (3) smoothly; The wall thickness of mild steel sleeve pipe (3) is not less than the wall thickness of multi-cavity body steel pipe (1); Mild steel sleeve pipe (3) connects through being connected shearing bolt (4) with multi-cavity body steel pipe (1), and forms precompression; The thickness of said high-ductility composite material layer (6) is not less than the thickness of mild steel sleeve pipe 3, and is not less than 20mm.
4. the difunctional multi-cavity body steel core concrete column of bottom according to claim 1 band mild steel sleeve pipe is characterized in that: said mild steel sleeve pipe 3 height above ground level or flooring are preferably 1.0h, and wherein h is long limit, multi-cavity body steel pipe (1) the cross section size of rectangle.
5. according to the difunctional multi-cavity body steel core concrete column of the described bottom of the arbitrary claim of claim 1 to 4 band mild steel sleeve pipe, it is characterized in that: the difunctional multi-cavity body steel core concrete column of said bottom band mild steel sleeve pipe is made as follows:
1) at multi-cavity body steel pipe (1) and the corresponding position of mild steel sleeve pipe (3) two-way reservation bolt hole;
Corresponding nut (5) is gone up in the lateral surface correspondence position welding at the bolt hole place that 2) multi-cavity body steel pipe (1) is reserved;
3) multi-cavity body steel pipe (1) and bottom mild steel sleeve pipe (3) are carried out correct positioning, make bolt hole on their same rows on same level height;
4) penetrate connection shearing bolt (4) at the bolt hole place that reserves, tighten connection shearing bolt (4), between mild steel sleeve pipe (3) and multi-cavity body steel pipe (1), embed high-ductility composite material layer (6) through the nut (5) of inside;
5) perfusion core concrete (2) in multi-cavity body steel pipe (1) is the difunctional multi-cavity body steel core concrete column that the mild steel sleeve pipe is with in the bottom after the moulding.
CN2011104603485A 2011-12-31 2011-12-31 Double-function multi-cavity steel tube concrete column provided with soft steel sleeve at bottom, and manufacturing method thereof Pending CN102535749A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102995831A (en) * 2012-12-03 2013-03-27 北京工业大学 Multi-cavity steel tube concrete column with inner partition board with horizontal joints and manufacturing method of concrete column
CN104746422A (en) * 2014-09-19 2015-07-01 杭州江润科技有限公司 Bridge prefabricated hollow pier column post-poured connecting structure and construction method
CN105297616A (en) * 2015-09-29 2016-02-03 华侨大学 Box type steel pier capable of being repaired quickly in situ during earthquake damage
CN106013612A (en) * 2016-07-05 2016-10-12 风范绿色建筑(常熟)有限公司 Shock-absorbing and compression-resisting concrete filled steel tubular column
CN107060109A (en) * 2017-03-05 2017-08-18 北京工业大学 A kind of assembly concrete-filled steel tube post post connected mode
CN108204076A (en) * 2018-01-19 2018-06-26 淮阴工学院 A kind of multi-cavity FRP pipe concrete coupled columns and preparation method thereof

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102995831A (en) * 2012-12-03 2013-03-27 北京工业大学 Multi-cavity steel tube concrete column with inner partition board with horizontal joints and manufacturing method of concrete column
CN104746422A (en) * 2014-09-19 2015-07-01 杭州江润科技有限公司 Bridge prefabricated hollow pier column post-poured connecting structure and construction method
CN105297616A (en) * 2015-09-29 2016-02-03 华侨大学 Box type steel pier capable of being repaired quickly in situ during earthquake damage
CN106013612A (en) * 2016-07-05 2016-10-12 风范绿色建筑(常熟)有限公司 Shock-absorbing and compression-resisting concrete filled steel tubular column
CN107060109A (en) * 2017-03-05 2017-08-18 北京工业大学 A kind of assembly concrete-filled steel tube post post connected mode
CN108204076A (en) * 2018-01-19 2018-06-26 淮阴工学院 A kind of multi-cavity FRP pipe concrete coupled columns and preparation method thereof

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