CN101812898B - 45-degree arranged cross section steel SRC column with flanges - Google Patents
45-degree arranged cross section steel SRC column with flanges Download PDFInfo
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- CN101812898B CN101812898B CN2010101816108A CN201010181610A CN101812898B CN 101812898 B CN101812898 B CN 101812898B CN 2010101816108 A CN2010101816108 A CN 2010101816108A CN 201010181610 A CN201010181610 A CN 201010181610A CN 101812898 B CN101812898 B CN 101812898B
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Abstract
The invention discloses a new section type section steel concrete column, namely a 45-degree arranged cross steel SRC column with flanges, comprising a concrete column and a spiral hoping frame arranged in the concrete column, wherein vertical enforcements are respectively distributed in the side corner of the inner side wall of the spiral hoping frame along the depth direction of the spiral hoping frame uniformly. The 45 degrees arranged cross steel SRC column with flanges is characterized in that cross section steels distributed in diagonal are arranged in a frame formed by spiral hoping and vertical enforcements of the concrete column; web plates of the cross section steels with flanges distributed in diagonal are respectively and perpendicularly provided with section steel flanges; and end parts on both sides of each section steel flange are attached to the inner side face of the spiral hoping. The web plates of the 45-degree arranged cross steels with flanges are overlapped with the diagonal of the section of the column so that the section steel concrete column can not only resist against the slant earthquake effect, but also can resist against multi-dimensional earthquake effect because of shear decomposition in the diagonal, thus, the earthquake performance of the section steel concrete column can be greatly improved.
Description
Technical field
The present invention relates to the SRC post of steel and concrete combined structure and combination construction, particularly miter angle is arranged band edge of a wing cross-shaped steel SRC post.
Background technology
Steel reinforced concrete structure be with shaped steel be skeleton and around the shaped steel flush type combined structure system of configuration reinforcement and fluid concrete, be called for short the SRC structure.Profile steel concrete column is the important component part of steel reinforced concrete structure, and profile steel concrete column mainly adopts several shaped steel forms such as I shape, H shape and core cross at present, and test shows that the more common RC post of the anti-seismic performance of profile steel concrete column increases.Yet along with going deep into that engineering is used and studied, the limitation that the present tradition that adopts is joined steel form SRC post clearly embodies.Conventional I shape and H shape etc. are joined the steel form can not provide operative constraint to the core concrete of column section, and the slippage between shaped steel and the concrete has reduced the bearing capacity and the deformability of post; In addition, tradition is joined the common quadrangle stirrup of the normal employing of steel form SRC post, and 135 ° of crotch places of stirrup destroy easily.When adopting tradition to join the steel form, the ductility of profile steel concrete column is relatively poor, and limit value of axial compression ratio is lower, and the more common RC post of anti-seismic performance improves few, its restricted application.Therefore, how research improves is joined the steel form to improve the supporting capacity and the anti-seismic performance of post, problem demanding prompt solution when just becoming the applied steel concrete column in highrise building and high earthquake intensity district.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of new type section form profile steel concrete column is provided, and promptly miter angle is arranged band edge of a wing cross-shaped steel SRC post, overcomes the deficiency that tradition is joined the steel form, thus the anti-seismic performance of improved-type greatly steel concrete column.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: miter angle is arranged band edge of a wing cross-shaped steel SRC post, comprise concrete column, and the spiral stirrup framework that is provided with in the concrete column, longitudinal reinforcement is distributed in respectively in the side angle of its inside wall along the depth direction of spiral stirrup framework, it is characterized in that: the cross-shaped steel that is the diagonal distribution is set in the framework that spiral stirrup in described concrete column and longitudinal reinforcement constitute, this cross-shaped steel that is the diagonal distribution is provided with web, be vertically installed with the shaped steel edge of a wing on the web respectively, and the both side ends on this shaped steel edge of a wing and spiral stirrup medial surface are close to.
Described concrete column is square post, and the web of band edge of a wing cross-shaped steel overlaps with two diagonal of square post in this square post.
Described band edge of a wing cross-shaped steel is structure as a whole.
Described shaped steel flange width is 1/4 of a concrete column breadth of section.
It is 5%～9% that the steel rate is joined in the cross section of described band edge of a wing cross-shaped steel SRC post.
The invention has the beneficial effects as follows:
Miter angle arranges that the web of band edge of a wing cross-shaped steel overlaps with the column section diagonal, and therefore profile steel concrete column can not only resist oblique geological process, and the shearing of diagonal decomposes can also effectively resist multi-component earthquake excitation; In addition, this kind joined under the steel form, be subjected to the concrete area of shaped steel constraint and intensity all more than common SRC post raising, thereby the ductility of post and energy dissipation capacity improves greatly.The present invention has changed the mode of failure of profile steel concrete column, and very big bearing capacity is still arranged behind the component damage, and this variation both can reduce earthquake sheet significantly, can embody the design principles of no collapsing with strong earthquake again, makes member have good seismic resistance.
Profile steel concrete column is arranged band edge of a wing cross-shaped steel by the configuration miter angle, thereby guarantee that shaped steel, vertical muscle and stirrup form a whole steelframe, the constraint core concrete also can collaborative work with it, reaches the purpose that improves profile steel concrete column supporting capacity and anti-seismic performance.Miter angle arranges that band edge of a wing cross-shaped steel SRC rod structure can be applied in the building in highrise building and high earthquake intensity area, particularly the highrise building in the above area of seismic fortification intensity 8 degree.
Description of drawings
Fig. 1 arranges the schematic cross-section of band edge of a wing cross-shaped steel SRC post for miter angle.
Among the figure: 1 is the shaped steel web, and 2 is longitudinal reinforcement, and 3 is the quadrangle spiral stirrup, and 4 is the shaped steel edge of a wing.
The specific embodiment
The present invention will be further described below in conjunction with specific embodiment and accompanying drawing.Need to prove that following embodiment only limits to explanation of the invention, but do not limit practical range of the present invention.The increase of every structure of making on the basis of this programme or with the replacement of same content all should belong to protection scope of the present invention.
As shown in Figure 1, this miter angle is arranged band edge of a wing cross-shaped steel SRC post, comprise concrete column, reach spiral stirrup 3 frameworks that are provided with in the concrete column, longitudinal reinforcement 2 is distributed in respectively in the side angle of its inside wall along the depth direction of spiral stirrup 3 frameworks, wherein: in the framework that spiral stirrup 3 in described concrete column and longitudinal reinforcement 2 constitute the cross-shaped steel that is the diagonal distribution is set, this cross-shaped steel that is the diagonal distribution is provided with web 1, be vertically installed with the shaped steel edge of a wing 4 on the web 1 respectively, and the both side ends on this shaped steel edge of a wing 4 and spiral stirrup 3 medial surfaces are close to.Concrete column shown in Figure 1 is square rod structure, and band edge of a wing cross-shaped steel web 1 overlaps with two diagonal of square post in this square post.The end face on the shaped steel edge of a wing 4 of band edge of a wing cross-shaped steel is relative with longitudinal reinforcement 2.And band edge of a wing cross-shaped steel and longitudinal reinforcement 2 and quadrangle spiral stirrup 3 form the whole steelframe in a space, the constraint core concrete and with its co-operation; Longitudinal reinforcement 2 with spiral stirrup 3 colligations be in the same place, the both side ends on the outer edge of a wing 4 of shaped steel is close in eight positions and spiral stirrup 3 inboards, thus the three forms the whole steelframe constraint in space core concrete, the bearing capacity and the anti-seismic performance of assurance SRC post.
Miter angle of the present invention arranges that band edge of a wing cross-shaped steel is designed to integrative-structure, and promptly it is welded as structure shown in Figure 1 with steel part.The shaped steel edge of a wing 4 of band edge of a wing cross-shaped steel is vertically set on the cross-shaped steel web 1.These shaped steel edge of a wing 4 width are 1/4 of concrete column cross section overall width.
This miter angle arranges that band edge of a wing cross-shaped steel is used in combination and can produces operative constraint to core concrete with continuous helical stirrup 3 and common longitudinal reinforcement 2, improves concrete intensity and ductility greatly, improves structural seismic performance.
Because the repeatability of geological process, the oblique layout band of miter angle edge of a wing cross-shaped steel can effectively improve the anti-seismic performance and the shear-carrying capacity of SRC post.We show by the experimental study result: miter angle arranges that the shaped steel and the concrete of band edge of a wing cross-shaped steel SRC post can keep collaborative work until the bearing capacity damage that reaches capacity, the cross section strain meets plane hypothesis, when the design ratio of axial compressive force to axial compressive ultimate capacity of section is 1.0, the hysteresis loop of test specimen is still comparatively full, bearing capacity and deformability are big, energy dissipation capacity is strong, has better anti.
In order to guarantee enough supporting capacitys and anti-seismic performance, the steel rate of joining in cross section can not be low excessively, can not be too high, shaped steel configuration very few misses one's aim, but the shaped steel configuration too much increase construction costs again.Miter angle arranges that the steel rate of joining of band edge of a wing cross-shaped steel SRC post mainly controls by the shaped steel flange width, and in conjunction with experimental study and China's national situation, the cross section is joined the steel rate and is advisable 5%～9%, and it is 7.5% that present embodiment the best is joined the steel rate.Join the profile steel concrete column of steel rate in this certain scope, its bearing capacity and ultimate deformation improve 30% and 55% respectively than the plain edition steel concrete column of same cross-sectional size and ratio of axial compressive force to axial compressive ultimate capacity of section.
Following table 1 has provided the comparison of the present invention and plain edition steel concrete column anti-seismic performance.
Table 1 the present invention and common SRC post supporting capacity and ultimate deformation are frequently
In order to guarantee shaped steel and concrete collaborative work better, miter angle arranges that longitudinal reinforcement and the stirrup of being with edge of a wing cross-shaped steel SRC post to dispose some in the cross section are necessary fully, also very effective, in the test that we finish, ductility bending failure has preferably all taken place in the profile steel concrete column that has disposed the vertical muscle of continuous helical stirrup and some.
The construction technology of profile steel concrete column of the present invention:
Miter angle arranges that the shaped steel skeleton of band edge of a wing cross-shaped steel SRC post is welded by the steel plate of corresponding specification as required, it is made in specialized steel structure company, transport to the job site then, carry out colligation with vertical muscle and stirrup again, thus further formwork and concreting.Spiral stirrup adopts quadrangle continuous helical stirrup, its diameter and shaped steel size according to post is utilized the bar bending machine, to indulge muscle during colligation earlier and be welded on the interior hoop by spacing, as a whole from the top down with the shaped steel parcel, the shaped steel flange width is 1/4 of a column section overall height then.
If be connected to form space structures, then can weld the shaped steel in reinforcing bar in the beam and the SRC post at connection contact place with reinforced concrete beam; If be connected to form overall structure with girder with rolled steel section en cased in concrete or girder steel, then vertical shaped steel in the post and the shaped steel in the beam adopt welding, so just formed whole shaped steel skeleton, it can be used as the load-bearing skeleton of construction stage, resist bigger vertical and horizontal loading, create certain social benefit and economic benefit.
Claims (5)
1.45 degree arranged cross section steel SRC column with flanges, comprise concrete column, and spiral stirrup (3) framework that is provided with in the concrete column, longitudinal reinforcement (2) is distributed in respectively in the side angle of its inside wall along the depth direction of spiral stirrup (3) framework, it is characterized in that: the cross-shaped steel that is the diagonal distribution is set in the framework that spiral stirrup in described concrete column (3) and longitudinal reinforcement (2) constitute, this cross-shaped steel that is the diagonal distribution is provided with web (1), be vertically installed with the shaped steel edge of a wing (4) on the web (1) respectively, and the both side ends on this shaped steel edge of a wing (4) is pasted mutually with spiral stirrup (3) medial surface.
2. miter angle according to claim 1 is arranged band edge of a wing cross-shaped steel SRC post, and it is characterized in that: described concrete column is square post, and band edge of a wing cross-shaped steel web (1) overlaps with two diagonal of square post in this square post.
3. miter angle according to claim 1 is arranged band edge of a wing cross-shaped steel SRC post, and it is characterized in that: described band edge of a wing cross-shaped steel is structure as a whole.
4. miter angle according to claim 1 is arranged band edge of a wing cross-shaped steel SRC post, and it is characterized in that: the described shaped steel edge of a wing (4) width is 1/4 of a concrete column breadth of section.
5. miter angle according to claim 1 is arranged band edge of a wing cross-shaped steel SRC post, and it is characterized in that: it is 5%～9% that the steel rate is joined in the cross section of described band edge of a wing cross-shaped steel SRC post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101816108A CN101812898B (en) | 2010-05-25 | 2010-05-25 | 45-degree arranged cross section steel SRC column with flanges |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101816108A CN101812898B (en) | 2010-05-25 | 2010-05-25 | 45-degree arranged cross section steel SRC column with flanges |
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| Publication Number | Publication Date |
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| CN101812898A CN101812898A (en) | 2010-08-25 |
| CN101812898B true CN101812898B (en) | 2011-10-26 |
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| CN107130721B (en) * | 2017-07-10 | 2022-08-26 | 南京工业大学 | Anti die-cut concrete rectangle column slab node and concrete slab node |
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| JPH02274938A (en) * | 1989-04-18 | 1990-11-09 | Takenaka Komuten Co Ltd | Combining method for src column |
| JPH04140366A (en) * | 1990-09-29 | 1992-05-14 | Maeda Corp | Preceding erection method of prefabricated column bar and semi-pc girder in pc construction |
| JP2694496B2 (en) * | 1992-12-18 | 1997-12-24 | 亮作 山田 | Method for forming pillar material of building and the like and the pillar material |
| JP2000027368A (en) * | 1998-07-08 | 2000-01-25 | Maeda Corp | Steel encased reinforced concrete-constructed column |
| CN2791146Y (en) * | 2005-04-15 | 2006-06-28 | 沈阳建筑大学 | Steel-skeleton high-strength compsoite column |
| CN1970952A (en) * | 2006-12-05 | 2007-05-30 | 西安建筑科技大学 | Cross type steel concrete profiled pole with pen-web channel beam framework |
| CN101638916B (en) * | 2009-08-20 | 2010-11-10 | 广东省建科建筑设计院 | Connecting joint of coating composite steel concrete transformation column with composite steel concrete transformation box beam |
| CN201671227U (en) * | 2010-05-25 | 2010-12-15 | 西安建筑科技大学 | SRC column with diagonally arranged cross steels with flanges |
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Granted publication date: 20111026 Termination date: 20130525 |