CN1970954A - L-shape steel concrete profiled pole with solid-web steel framework - Google Patents
L-shape steel concrete profiled pole with solid-web steel framework Download PDFInfo
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- CN1970954A CN1970954A CN 200610105118 CN200610105118A CN1970954A CN 1970954 A CN1970954 A CN 1970954A CN 200610105118 CN200610105118 CN 200610105118 CN 200610105118 A CN200610105118 A CN 200610105118A CN 1970954 A CN1970954 A CN 1970954A
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Abstract
The invention discloses a L-shaped steel reinforced concrete special-shaped column matching with solid steel skeleton, comprising L-shaped steel reinforced concrete special-shaped column and section steel. The section steel is matched with said L-shaped steel reinforced concrete special-shaped column and said section steels are connected by solid steel plate. The L-shaped steel reinforced concrete special-shaped columns matching with solid steel skeleton of T section steel can improve the bearing ability and anti-shock performance of common RC special-shaped column by reasonably matching section steel It makes special-shaped column structure apply widely in high-rise building and the building in the region with high earthquake intensity , especially the high-rise building in the region against more than eight degree of anti-shock.
Description
Technical field
The present invention relates to steel and concrete combined structure and combination construction, particularly the steel reinforced concrete special-shaped column structure.
Background technology
Special-shaped column structure is a kind of new structure that development in recent years is got up.It is made up of L, T, ten shape posts, and post limb width and infilled wall uniform thickness are avoided the stupefied protrusion of post, can for the user provides comfortable work and dwelling environment, increase the actual usable floor area in room building organically combination flexibly attractive in appearance and that use, " percentage of usable dwelling area " height is favourably welcome.Country has issued multinomial directive document in order to promote this new structure.Yet along with going deep into that engineering is used and studied, some limitation of steel concrete (RC) hetermorphiscal column that adopts clearly embody at present.Consider light energy conservation, partition wall and post limb thickness are generally little, often adopt two kinds of 200mm and 240mm, are subjected to the wide restriction of the effective wing of column section (ratio≤4 that limb length is wide with limb) simultaneously, and its section area is very limited.Be subjected to the restriction of concrete strength and sectional reinforcement rate, the supporting capacity of RC hetermorphiscal column is also very limited, while cross section irregularity, and poor seismic behavior, ductility is poor, and limit value of axial compression ratio is very low, and its scope of application is very limited.Be only applicable in the building in multilayer or small sized multiple story building and fortification intensity 7 degree and the following area of 7 degree.Therefore, how research improves columns bearing capacity and anti-seismic performance, just becomes problem demanding prompt solution when highrise building and high earthquake intensity district application hetermorphiscal column.
The purpose of the concrete profiled pile of configuration shaped steel is exactly by configuration shaped steel, improves the supporting capacity and the anti-seismic performance of common RC hetermorphiscal column.Special-shaped column structure can be applied in the building in highrise building and high earthquake intensity area.
In order to reach the supporting capacity that improves hetermorphiscal column and the purpose of anti-seismic performance, in the RC hetermorphiscal column, dispose shaped steel, form steel reinforced concrete (SRC) hetermorphiscal column.A large amount of in the past square-section SRC structures that studies show that are compared with reinforced concrete structure, owing to include more shaped steel, its supporting capacity and anti-seismic performance all are significantly improved.SRC structure and reinforced concrete structure significantly one of difference are exactly that shaped steel and concrete adhesion stress are far smaller than reinforcing bar and concrete adhesion stress.In order to guarantee that two kinds of different elements of shaped steel and concrete can collaborative work, must take certain measure (such as weld stud or take the certain protection layer thickness), otherwise not reach effect of Combination.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of L shaped steel reinforced concrete hetermorphiscal column of joining solid-web steel framework is provided, and this L shaped steel reinforced concrete hetermorphiscal column of joining solid-web steel framework can improve concrete and shaped steel adhesion stress.
For solving the problems of the technologies described above, the technical scheme of technical solution problem of the present invention is:
Comprise L shaped concrete profiled pile, shaped steel, in described L shaped concrete profiled pile, dispose shaped steel, link to each other by real abdomen steel plate between the described shaped steel.
Vertical T-steel (1,2,3) is set respectively in L shaped concrete profiled pile, and vertical T-steel (2) is connected with vertical T-steel (1) by web (4) respectively, is connected with vertical T-steel (3) by web (5), thereby forms an overall space steelframe.
The steel rate is joined 4%～10% in described L shaped steel reinforced concrete hetermorphiscal column cross section of joining solid-web steel framework.
The invention has the beneficial effects as follows:
The purpose of joining the L shaped steel reinforced concrete hetermorphiscal column of solid-web steel framework is exactly by reasonable configuration shaped steel, thereby improves the supporting capacity and the anti-seismic performance of common RC hetermorphiscal column.Special-shaped column structure can be applied, particularly the highrise building in the above area of seismic fortification intensity 8 degree in the building in highrise building and high earthquake intensity area.
Description of drawings
Fig. 1 joins the L shaped steel reinforced concrete hetermorphiscal column schematic diagram of solid-web steel framework.
The specific embodiment
For the supporting capacity that can reach effective raising hetermorphiscal column and the purpose of anti-seismic performance, the steel rate of joining in cross section can not be too low, can not be too high, shaped steel is joined very little, misses one's aim, and shaped steel is joined too much, must cause concrete that the bond stress of shaped steel is reduced, have influence on both adhesion stresss.In conjunction with China's national situation, the cross section is joined the steel rate and is advisable 4%～10%, and we are by experimental study, joins the steel rate and compares ultimate bearing capacity for the SRC hetermorphiscal column RC hetermorphiscal column identical with section form in this scope and improve and (see Table 1) more than 36%.Shaped steel and concrete adhesion strength reach about 2.5MPa, and the slippage between shaped steel and the concrete is less than 0.4mm.
The ultimate bearing capacity of table 1 SRC hetermorphiscal column and RC hetermorphiscal column relatively
The L shaped steel reinforced concrete hetermorphiscal column of joining real abdomen shaped steel skeleton, in order to guarantee shaped steel and concrete collaborative work, the vertical reinforcement of configuration some and stirrup are necessary fully in the cross section, and this is also confirmed by our experimental study; Because the existence of web makes stirrup make closed and relatively bother, make closed stirrup and can take the way of welding or on steel plate, boring a hole.The shear-carrying capacity major part of joining the SRC hetermorphiscal column of real abdomen formula steel frame has real abdomen steel plate to bear, stirrup is not main to the contribution of shearing resistance effect, the main purpose of stirrup is the inner concrete of constraint in the SRC hetermorphiscal column of joining real abdomen formula steel frame, thereby improving shaped steel and concrete collaborative work ability, is different with common RC hetermorphiscal column on this point.We show by the experimental study result of 5 test specimens: join the SRC hetermorphiscal column of solid-web steel framework, shaped steel and concrete can keep collaborative work, have antidetonation deformability and energy dissipation capacity preferably.
In order to ensure shaped steel and concrete collaborative work, satisfy the fire prevention of structure, requirement such as anticorrosion, antirust simultaneously, the SRC hetermorphiscal column needs certain thickness of concrete cover, and protective layer thickness can be calculated by following formula to be determined:
c
min＝0.2822b
f
In the formula: c
MinRepresent required thickness of concrete cover minimum value, b
fBe the T-steel flange width.
The construction technology of joining the L shaped steel reinforced concrete hetermorphiscal column of solid-web steel framework:
Joining the composition of shaped steel skeleton of the L shaped steel reinforced concrete hetermorphiscal column of solid-web steel framework is made up of vertical T-steel and real abdomen steel plate, T-steel can be welded by the steel plate of corresponding specification as required, also can be formed by the i iron cutting, real abdomen steel plate generally adopts steel sheet.Welding is adopted in connection between all shaped steel.Can be in advance produce, transport to the job site then, behind the assigned address installation in position, can bear the skeleton of working load, thereby save the support of template as the construction stage in specialized steel structure company.If be connected to form space structures with reinforced concrete beam, then can connect the contact place the vertical shaped steel welding of reinforcing bar in the beam and SRC hetermorphiscal column, so just can avoid the node place of common RC hetermorphiscal column and RC beam because beam muscle and post muscle are crossing in same plane, the cloth muscle is intensive, is unfavorable for the problem of constructing.If be connected to form overall structure with SRC beam 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, can be used as the load-bearing skeleton of construction stage, can save the support consumptive material in large quantities, and provide possibility for realizing that a plurality of floors are constructed simultaneously, can accelerating construction progress, create how better social benefit and economic benefit.
The steel of joining of joining the L shaped steel reinforced concrete hetermorphiscal column of solid-web steel framework illustrates as shown in Figure 1.1,2,3 is vertical T-steel, and 4,5 is web; Vertical T-steel 2 is connected with vertical T-steel 1 by web 4 respectively, is connected with vertical T-steel 3 by web 5, thereby forms an overall space steelframe.
Claims (3)
1, a kind of L shaped steel reinforced concrete hetermorphiscal column of joining solid-web steel framework comprises L shaped concrete profiled pile, shaped steel, it is characterized in that: dispose shaped steel in described L shaped concrete profiled pile, described shaped steel is linked to each other by real abdomen steel plate.
2, L shaped steel reinforced concrete hetermorphiscal column of joining solid-web steel framework according to claim 1, it is characterized in that: described concrete profiled pile is L shaped post, vertical T-steel (1,2,3) is set respectively in L shaped concrete profiled pile, vertical T-steel (2) is connected with vertical T-steel (1) by web (4) respectively, be connected with vertical T-steel (3) by web (5), thereby form an overall space steelframe.
3, according to the L shaped steel reinforced concrete hetermorphiscal column of joining solid-web steel framework described in the claim 1-2, it is characterized in that: the steel rate is joined 4%～10% in described L shaped steel reinforced concrete hetermorphiscal column cross section of joining solid-web steel framework.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610105118 CN1970954A (en) | 2006-12-05 | 2006-12-05 | L-shape steel concrete profiled pole with solid-web steel framework |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610105118 CN1970954A (en) | 2006-12-05 | 2006-12-05 | L-shape steel concrete profiled pole with solid-web steel framework |
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| CN1970954A true CN1970954A (en) | 2007-05-30 |
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| CN 200610105118 Pending CN1970954A (en) | 2006-12-05 | 2006-12-05 | L-shape steel concrete profiled pole with solid-web steel framework |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338908A (en) * | 2017-08-29 | 2017-11-10 | 北京工业大学 | A kind of type lowly reinforced external wrapping concrete shaped steel Special-Shaped Columns of L 1 |
-
2006
- 2006-12-05 CN CN 200610105118 patent/CN1970954A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338908A (en) * | 2017-08-29 | 2017-11-10 | 北京工业大学 | A kind of type lowly reinforced external wrapping concrete shaped steel Special-Shaped Columns of L 1 |
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Open date: 20070530 |