CN1970953A - L-shape steel concrete profiled pole with pen-web framework of T-shape steel - Google Patents
L-shape steel concrete profiled pole with pen-web framework of T-shape steel Download PDFInfo
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- CN1970953A CN1970953A CN 200610105117 CN200610105117A CN1970953A CN 1970953 A CN1970953 A CN 1970953A CN 200610105117 CN200610105117 CN 200610105117 CN 200610105117 A CN200610105117 A CN 200610105117A CN 1970953 A CN1970953 A CN 1970953A
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Abstract
The invention discloses a L-shaped steel reinforced concrete special-shaped column matching with fasting skeleton of T section steel, comprising L-shaped reinforced concrete special-shaped column and fasting skeleton of T section steel. The fasting skeleton of T section steel is matched with said L-shaped reinforced concrete special-shaped column and said fasting skeletons of T section steel are connected by cross battened column. The L-shaped steel reinforced concrete special-shaped columns matching with fasting skeleton of T section steel can ensure section steel and concrete work in phase by reasonably matching section steel so as to improve the bearing ability and anti-shock performance of common RC special-shaped column. 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 the T-steel pen-web framework is provided, and this L shaped steel reinforced concrete hetermorphiscal column of joining the T-steel pen-web 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, T-steel pen-web framework, configuration T-steel pen-web framework is linked to each other by the intersection web member between the described T-steel pen-web framework in described L shaped concrete profiled pile.
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 member (4,5,6) respectively, be connected with vertical T-steel (3) by web member (7,8,9), thereby form an overall space steelframe.
The steel rate is joined 4%～10% in described L shaped steel reinforced concrete hetermorphiscal column cross section of joining the T-steel pen-web framework.
The invention has the beneficial effects as follows:
The L shaped steel reinforced concrete hetermorphiscal column of joining the T-steel pen-web framework is by reasonable configuration shaped steel, thereby guarantees that shaped steel and concrete can collaborative works, reaches the supporting capacity of the common RC hetermorphiscal column of raising and the purpose of anti-seismic performance.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 T-steel pen-web framework.
The specific embodiment
The L shaped steel reinforced concrete hetermorphiscal column of joining the T-steel pen-web framework, the transverse shearing force that web member in the skeleton can bear between shaped steel and the concrete has played the effect that is equivalent to peg simultaneously, very favourable to guaranteeing shaped steel and concrete collaborative work, and web member can be between each post limb Transfer of Shear, can prevent the shear lag phenomenon in hetermorphiscal column cross section effectively, because the repeatability of geological process disposes the intersection web member, can improve the anti-seismic performance and the shear-carrying capacity of hetermorphiscal column effectively.We show by the experimental study result of 9 test specimens: the SRC hetermorphiscal column of configuration intersection web member T-steel pen-web framework, shaped steel and concrete can keep collaborative work until the bearing capacity damage that reaches capacity, the cross section strain meets plane hypothesis, the hysteresis loop of test specimen is full, the antidetonation bearing capacity is high and deformability is big, energy dissipation capacity is strong, has better anti.
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, miss one's aim, but 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%, we are by experimental study, joining the steel rate compares ultimate bearing capacity for the hetermorphiscal column of SRC is identical with section form in this scope RC hetermorphiscal column and improves and (specifically 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 0.2mm.
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 the T-steel pen-web framework, in order to guarantee shaped steel and concrete collaborative work better, the longitudinal reinforcement of configuration some and stirrup are necessary fully in the cross section, also very effective, this is also confirmed by our experimental study, disposed the SRC hetermorphiscal column of the intersection web member T-steel pen-web framework of the longitudinal reinforcement of some and stirrup by structure, shear bond has not all taken place destroy.
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 T-steel pen-web framework:
The composition of shaped steel skeleton of L shaped steel reinforced concrete hetermorphiscal column of joining the T-steel pen-web framework is by vertical T-steel and intersect diagonal web member and part of horizontal web member and form, T-steel can be welded by the steel plate of corresponding specification as required, also can be formed by the i iron cutting, diagonal web member and horizontal web member can adopt band steel or little angle steel.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 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 L shaped steel reinforced concrete hetermorphiscal column of joining L shaped shaped steel pen-web framework, as shown in Figure 1,1,2,3 is vertical shaped steel, and 4,7 is horizontal web member, and 5,6,8,9 for intersecting diagonal web member; Vertical T-steel 2 is connected with vertical T-steel 1 by web member 4,5,6 respectively, is connected with vertical T-steel 3 by web member 7,8,9, thereby forms an overall space steelframe.
Claims (3)
1, a kind of L shaped steel reinforced concrete hetermorphiscal column of joining the T-steel pen-web framework comprises L shaped concrete profiled pile, T-steel, it is characterized in that: configuration T-steel pen-web framework in described L shaped concrete profiled pile is linked to each other by the intersection web member between the described T-steel pen-web framework.
2, L shaped steel reinforced concrete hetermorphiscal column of joining the T-steel pen-web 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 member (4,5,6) respectively, be connected with vertical T-steel (3) by web member (7,8,9), thereby form an overall space steelframe.
3, according to the L shaped steel reinforced concrete hetermorphiscal column of joining the T-steel pen-web 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 the T-steel pen-web framework.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610105117 CN1970953A (en) | 2006-12-05 | 2006-12-05 | L-shape steel concrete profiled pole with pen-web framework of T-shape steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610105117 CN1970953A (en) | 2006-12-05 | 2006-12-05 | L-shape steel concrete profiled pole with pen-web framework of T-shape steel |
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| CN1970953A true CN1970953A (en) | 2007-05-30 |
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| CN 200610105117 Pending CN1970953A (en) | 2006-12-05 | 2006-12-05 | L-shape steel concrete profiled pole with pen-web framework of T-shape steel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605101A (en) * | 2017-10-09 | 2018-01-19 | 中冶建筑研究总院有限公司 | A kind of heat-preserving load-bearing one steel concrete combined special-shaped column and its construction method |
| CN110173077A (en) * | 2019-06-20 | 2019-08-27 | 福州大学 | A kind of fashioned iron-Combined concrete L shape column of built-in FRP tendons |
-
2006
- 2006-12-05 CN CN 200610105117 patent/CN1970953A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605101A (en) * | 2017-10-09 | 2018-01-19 | 中冶建筑研究总院有限公司 | A kind of heat-preserving load-bearing one steel concrete combined special-shaped column and its construction method |
| CN110173077A (en) * | 2019-06-20 | 2019-08-27 | 福州大学 | A kind of fashioned iron-Combined concrete L shape column of built-in FRP tendons |
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Open date: 20070530 |