CN102619303B - Square steel pipe high-strength concrete post restricted by internally tangent annular hoop reinforcement - Google Patents
Square steel pipe high-strength concrete post restricted by internally tangent annular hoop reinforcement Download PDFInfo
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- CN102619303B CN102619303B CN201210108806.3A CN201210108806A CN102619303B CN 102619303 B CN102619303 B CN 102619303B CN 201210108806 A CN201210108806 A CN 201210108806A CN 102619303 B CN102619303 B CN 102619303B
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Abstract
The invention provides a square steel pipe high-strength concrete post restricted by an internally tangent annular hoop reinforcement. The high-strength concrete post comprises an annular hoop reinforcement (2), a square steel pipe (3) and high-strength concrete (4), and is characterized in that pegs (1) and formed steel (5) are vertically arranged on the inner wall of the square steel pipe (3) and welded on the inner wall of the square steel pipe (3), the annular hoop reinforcement (2) is embedded in the square steel pipe (3) in such a manner that the external ring of the annular hoop reinforcement (2) is tangential to the inner wall of the square steel pipe (3), the annular hoop reinforcement (2) is connected to the inner wall of the square steel pipe (3) by spot welding, and the high-strength concrete (4) is poured into the square steel pipe (3). The high-strength concrete post is high in bearing capacity, good in ductility, convenient for construction, low in cost, and high in bending-resistant bearing capacity and flexural rigidity, can replace the traditional square steel pipe high-strength concrete post, formed steel high-strength concrete post, round steel pipe high-strength concrete post and other old structures, effectively shortens the construction period, and improves the safety performance of the building.
Description
Technical field
The present invention relates to a kind of high-strength concrete column, refer to a kind of square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete especially.
Background technology
Superior performance makes the range of application of high-strength concrete constantly expand, but high-strength concrete also has its fatal weakness, and namely the ductility of high-strength concrete is very poor, easily produces brittle fracture, and the ductility of plain concrete significantly reduces with the raising of concrete strength.
In high-strength concrete column, add shaped steel, form ratio of steel section high-strength concrete columns and will obviously improve the ductile performance of high-strength concrete column, but the ratio of steel section high-strength concrete columns usually adopted in current engineering there is following deficiency: 1. bearing capacity is not improved; 2. steel reinforced concrete relates to shaped steel, vertical muscle, stirrup and concrete, and working procedure is more.
External constraint is carried out to high-strength concrete, formation round steel pipe high-strength concrete column or square steel pipe steel high strength concrete pole also will obviously improve the ductile performance of high-strength concrete, but the round steel pipe high-strength concrete column usually adopted in engineering at present or square steel pipe steel high strength concrete pole have following shortcoming and defect: 1. round steel pipe high-strength concrete is due to the feature of circular cross-section, its bending rigidity and anti-bending bearing capacity lower, round steel pipe high-strength RC frame joints construction is simultaneously complicated, limits its application; 2. the steel pipe before ultimate bearing capacity of the steel pipe in high-concrete filled square steel tubular is poor to high-strength concrete binding effect, namely substantially works independently, and its ultimate bearing capacity is essentially the simple superposition of square steel pipe and high-strength concrete bearing capacity.
External constraint is carried out to high-strength concrete, and in the middle part of high-strength concrete embedding shaped steel, form steel tube binding type steel high strength concrete pole and also will obviously improve the ductile performance of high-strength concrete, but steel tube binding type steel high strength concrete pole has following shortcoming and defect: 1. steel pipe can not play the effect of bending resistance, do not give full play to the performance of steel, therefore such post steel using amount is comparatively large, and economy is poor; 2. bean column node complex structure.
Therefore, a kind of novel square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete is studied for being badly in need of.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art and provide a kind of bearing capacity high, ductility is good, easy construction, cost is low, anti-bending bearing capacity and the large square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of bending rigidity, effectively can shorten construction period, improves the security performance of building.
Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention, high-strength concrete column comprises ring-shaped stirrup, square steel pipe and high-strength concrete, it is characterized in that peg and shaped steel are arranged vertically within square steel pipe inwall, and be welded on square steel pipe inwall, outer shroud and the square steel pipe inwall of ring-shaped stirrup are tangent sheathed, ring-shaped stirrup is connected on square steel pipe inwall by spot welding, is cast with high-strength concrete in square steel pipe.
The present invention to be also between peg equidistantly or unequal-interval arrangement, between shaped steel equidistantly or unequal-interval arrangement or between peg and shaped steel equidistantly or unequal-interval arrangement, peg and shaped steel play Transfer of Shear effect, peg is arranged in the square steel pipe inwall at non-bean column node a place, and shaped steel is arranged in the square steel pipe inwall at bean column node b place.
The present invention is also that ring-shaped stirrup and square steel pipe inner surface adopt spot welding to fix, and ring-shaped stirrup equidistantly arranges, and ring-shaped stirrup plays effect of contraction to high-strength concrete.
The present invention is also that square steel pipe is uninterrupted at bean column node b place.
The present invention is also that described ring-shaped stirrup is annular stirrup, and the spacing between adjacent two ring-shaped stirrups is 30mm ~ 80mm, and ring-shaped stirrup diameter is 4mm ~ 8mm.
The present invention is also that described square steel pipe is formed at corner welding by the rectangular steel plates of four pieces of formed objects.
The present invention is also to be provided with peg at four block plates at the rotation angle position of split, and the peg on four block plates mutually overlaps or docks, four block plates while rotation angle position butt welding is shaping also by overlap joint or the welding of peg that is docking together together.
The present invention is also that four block plates only have a block plate to be provided with peg at the rotation angle position of split, and peg abuts against on adjacent steel plate, four block plates while rotation angle position butt welding is shaping also by the welding of peg that abuts against on adjacent steel plate on steel plate.
The present invention is also that described square steel pipe is bent by the rectangular steel plates of two pieces of formed objects, then by shaping for two half section bending steel plate make-up butt welding.
The present invention is also that two pieces of bending steel plates are provided with peg at the rotation angle position of make-up split, peg on two pieces of bending steel plates mutually overlaps or docks, while two half section bending steel plate make-up butt welding are shaping also by overlap joint or the welding of peg that is docking together together.
The present invention is also that two pieces of bending steel plates only have a block bending steel plate to be provided with peg at the rotation angle position of make-up split, and peg abuts against on adjacent bending steel plate, while two half section bending steel plate make-up butt welding are shaping also by near the welding of peg on Adjacent fold steel plate on steel plate.
The present invention is also that described ring-shaped stirrup is spiral stirrup, and the spacing between adjacent two ring-shaped stirrups is 30mm ~ 80mm, and ring-shaped stirrup diameter is 4mm ~ 8mm.
The present invention is also that described square steel pipe is formed at corner welding by the rectangular steel plates of four pieces of formed objects.
The present invention is also to be provided with peg at four block plates at the rotation angle position of split, and the peg on four block plates mutually overlaps or docks, four block plates while rotation angle position butt welding is shaping also by overlap joint or the welding of peg that is docking together together.
The present invention is also that four block plates only have a block plate to be provided with peg at the rotation angle position of split, and peg abuts against on adjacent steel plate, four block plates while rotation angle position butt welding is shaping also by the welding of peg that abuts against on adjacent steel plate on steel plate.
The present invention is also that described square steel pipe is bent by the rectangular steel plates of two pieces of formed objects, then by shaping for two half section butt welding.
The present invention is also that two pieces of bending steel plates are provided with peg at the rotation angle position of make-up split, peg on two pieces of bending steel plates mutually overlaps or docks, while two half section bending steel plate make-up butt welding are shaping also by overlap joint or the welding of peg that is docking together together.
The present invention is also that two pieces of bending steel plates only have a block bending steel plate to be provided with peg at the rotation angle position of make-up split, and peg abuts against on adjacent bending steel plate, while two half section bending steel plate make-up butt welding are shaping also by near the welding of peg on Adjacent fold steel plate on steel plate.
The present invention is also that the peg length be arranged in square steel pipe is different.
The present invention is also that long peg and short peg are disposed alternately in square steel pipe.
The present invention is also that the peg, of a circle length encloses short peg, the again peg of a circle length and is disposed alternately in square steel pipe.
Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention, its square steel pipe mainly bears moment of flexure, is secondly axle power, axle power mainly born by steel duct ring-shaped stirrup restraint and high-strength concrete, ring-shaped stirrup only provides horizontal effect of contraction to core concrete, and peg and shaped steel play Transfer of Shear effect.
The effect that square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention brings is:
1. bearing capacity is high, ductility good.The concrete of square steel pipe across corner plays effect of contraction, and the concrete of internally tangent ring-shaped stirrup to middle part plays effect of contraction, and square steel pipe, while carrying mechanical axis power, also can bear Moments, and square steel pipe and the division of labor of interior confined concrete are clearly.
2. easy construction.Square steel pipe, peg and shaped steel can weld at the construction field (site), and annular stirrup or spiral stirrup can be taked to be fixed with the mode of square steel pipe inwall spot welding, and post itself is relative with the construction of node simple.
3. good economical benefit.Under same cross-sectional steel ratio, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete bearing capacity, ductile performance and round steel pipe high-strength concrete column are more close, and easy construction, material can be saved, improve speed of application.
Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete, compared with round steel pipe high-strength concrete column, high-concrete filled square steel tubular post and ratio of steel section high-strength concrete columns, has the following advantages:
1. compare with ratio of steel section high-strength concrete columns with high-concrete filled square steel tubular post, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete improves bearing capacity and the ductility of high-strength concrete column, the concrete of square steel pipe across corner plays effect of contraction, and the concrete of inscribed circle stirrup to middle part plays effect of contraction.Figure 8 shows that the comparison of high-concrete filled square steel tubular axial compression short column and square steel pipe internally tangent ring-shaped stirrup restraint and high-strength concrete axial compression short column load-strain curve, it is visible because built-in annular stirrup and square steel pipe are to the double constraints of core concrete, the ultimate bearing capacity of square steel pipe internally tangent ring-shaped stirrup restraint and high-strength concrete axial compression short column improves 20% than the ultimate bearing capacity of high-concrete filled square steel tubular axial compression short column, failure stage ultimate bearing capacity declines slowly, Residual Load Bearing Capacity reaches more than 80% of corresponding ultimate bearing capacity, and ductility is improved greatly.
2., compared with round steel pipe high-strength concrete column, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete bearing capacity and ductility are substantially suitable, anti-bending bearing capacity and bending rigidity large.
3., compared with ratio of steel section high-strength concrete columns, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete solves stirrup and arranges great in constructing amount, the concrete that cause too much and shock difficulty and the problem such as template consumption is large.
4., compared with round steel pipe high-strength concrete column, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete solves the complicated difficulty of round steel pipe high strength concrete column reinforcing joint construction.
Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete, compared with existing steel tube binding type steel high strength concrete pole, has the following advantages:
1. the present invention is owing to adopting steel pipe continuous at Nodes, the steel pipe in the present invention is made to be provided with effect to steel tube binding type steel high strength concrete pole Shaped Steel and steel pipe, thus shaped steel is eliminated, generally speaking, shared by the volume steel ratio of existing steel tube binding type steel high strength concrete pole Shaped Steel, the ratio of all steel volume steel ratios is more than 50%, and therefore the present invention will reduce rolled steel dosage.
2. bean column node simple structure of the present invention: when pillar of the present invention is connected with reinforced concrete beam, the reinforcing bar in beam need through steel pipe, and now steel pipe needs punching, and because the wall thickness of steel pipe is general thinner, punching is than being easier to; When contrasting pillar of the present invention and being connected with girder steel, girder steel needs and steel-pipe welding, and because steel tube section is comparatively large, the operating surface of now type welding is comparatively large, and welding quality easily ensures.Because steel pipe is continuous at Nodes, node periphery does not need formwork, and without shaped steel, the space of Nodes concreting is comparatively large, and density easily ensures.
In sum, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete bearing capacity of the present invention is high, ductility good, easy construction, cost are low, anti-bending bearing capacity and bending rigidity large, the structure that alternative existing high-concrete filled square steel tubular post, ratio of steel section high-strength concrete columns, round steel pipe high-strength concrete column and steel tube binding type steel high strength concrete pole etc. are outmoded, effectively can shorten construction period, improve the security performance of building.
Accompanying drawing explanation
Fig. 1 is structural profile schematic diagram of the present invention.
Fig. 2 is structural column central section floor map of the present invention.
Fig. 3 is structural column node section floor map of the present invention.
Fig. 4 is the structural representation of detailed description of the invention stirrup.
Fig. 5 is the structural representation of detailed description of the invention stirrup.
Fig. 6 is the structural representation of detailed description of the invention square steel pipe.
Fig. 7 is the structural representation of detailed description of the invention square steel pipe.
Fig. 8 is square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete and the comparing of high-concrete filled square steel tubular post load-strain curve.
Fig. 9 is the reduced graph of Fig. 8, is square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete (c) and the comparing of high-concrete filled square steel tubular post (d) load-strain curve.
In Fig. 1,2,3,4,5,6,7,1 be peg, 2 be ring-shaped stirrup, 3 be square steel pipe, 4 be high-strength concrete, 5 for shaped steel.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete, high-strength concrete column comprises ring-shaped stirrup 2, square steel pipe 3 and high-strength concrete 4, it is characterized in that peg 1 and shaped steel 5 are arranged vertically within square steel pipe 3 inwall, and be welded on square steel pipe 3 inwall, outer shroud and square steel pipe 3 inwall of ring-shaped stirrup 2 are tangent sheathed, ring-shaped stirrup 2 is connected on square steel pipe 3 inwall by spot welding, is cast with high-strength concrete 4 in square steel pipe 3.
The present invention to be also between peg 1 equidistantly or unequal-interval arrangement, between shaped steel 5 equidistantly or unequal-interval arrangement or between peg 1 and shaped steel 5 equidistantly or unequal-interval arrange, peg 1 and shaped steel 5 play Transfer of Shear effect, peg 1 is arranged in square steel pipe 3 inwall at non-bean column node a place, and shaped steel 5 is arranged in square steel pipe 3 inwall at bean column node b place.
The present invention is also that ring-shaped stirrup 2 and square steel pipe 3 inner surface adopt spot welding to fix, and ring-shaped stirrup 2 equidistantly arranges, ring-shaped stirrup 2 pairs of high-strength concretes 4 effect of contractions.
The present invention is also that square steel pipe 3 is uninterrupted at bean column node b place.
The present invention is also that described ring-shaped stirrup 2 is annular stirrup, and the spacing between adjacent two ring-shaped stirrups 2 is 30mm ~ 80mm, and ring-shaped stirrup 2 diameter is 4mm ~ 8mm.
The present invention is also that described square steel pipe 3 is formed at corner welding by the rectangular steel plates of four pieces of formed objects.
The present invention is also to be provided with peg 1 at four block plates at the rotation angle position of split, and the peg 1 on four block plates is overlap joint or docking mutually, and the peg 1 overlapped or be docking together also welds together by four block plates while rotation angle position butt welding is shaping.
The present invention is also that four block plates only have a block plate to be provided with peg 1 at the rotation angle position of split, and peg 1 abuts against on adjacent steel plate, and the peg 1 abutted against on adjacent steel plate is also welded on steel plate by four block plates while rotation angle position butt welding is shaping.
The present invention is also that described square steel pipe 3 is bent by the rectangular steel plates of two pieces of formed objects, then by shaping for two half section bending steel plate make-up butt welding.
The present invention is also that two pieces of bending steel plates are provided with peg 1 at the rotation angle position of make-up split, peg 1 on two pieces of bending steel plates is overlap joint or docking mutually, is also welded together by the peg 1 overlapped or be docking together while two half section bending steel plate make-up butt welding are shaping.
The present invention is also that two pieces of bending steel plates only have a block bending steel plate to be provided with peg 1 at the rotation angle position of make-up split, and peg 1 abuts against on adjacent bending steel plate, be also welded near the peg 1 on Adjacent fold steel plate on steel plate while two half section bending steel plate make-up butt welding are shaping.
The present invention is also that described ring-shaped stirrup 2 is spiral stirrup, and the spacing between adjacent two ring-shaped stirrups 2 is 30mm ~ 80mm, and ring-shaped stirrup 2 diameter is 4mm ~ 8mm.
The present invention is also that described square steel pipe 3 is formed at corner welding by the rectangular steel plates of four pieces of formed objects.
The present invention is also to be provided with peg 1 at four block plates at the rotation angle position of split, and the peg 1 on four block plates is overlap joint or docking mutually, and the peg 1 overlapped or be docking together also welds together by four block plates while rotation angle position butt welding is shaping.
The present invention is also that four block plates only have a block plate to be provided with peg 1 at the rotation angle position of split, and peg 1 abuts against on adjacent steel plate, and the peg 1 abutted against on adjacent steel plate is also welded on steel plate by four block plates while rotation angle position butt welding is shaping.
The present invention is also that described square steel pipe 3 is bent by the rectangular steel plates of two pieces of formed objects, then by shaping for two half section butt welding.
The present invention is also that two pieces of bending steel plates are provided with peg 1 at the rotation angle position of make-up split, peg 1 on two pieces of bending steel plates is overlap joint or docking mutually, is also welded together by the peg 1 overlapped or be docking together while two half section bending steel plate make-up butt welding are shaping.
The present invention is also that two pieces of bending steel plates only have a block bending steel plate to be provided with peg 1 at the rotation angle position of make-up split, and peg 1 abuts against on adjacent bending steel plate, be also welded near the peg 1 on Adjacent fold steel plate on steel plate while two half section bending steel plate make-up butt welding are shaping.
The present invention is also that peg 1 length be arranged in square steel pipe 3 is different.
The present invention is also that long peg 1 is disposed alternately in square steel pipe 3 with short peg 1.
The present invention is also that the peg 1, of a circle length encloses short peg 1, the again peg 1 of a circle length and is disposed alternately in square steel pipe 3.
Fig. 1 is structural profile schematic diagram of the present invention; Fig. 2 is structural column central section floor map of the present invention; Fig. 3 is structural column node section floor map of the present invention; Fig. 4 is the structural representation of detailed description of the invention stirrup; Fig. 5 is the structural representation of detailed description of the invention stirrup; Fig. 6 is the structural representation of detailed description of the invention square steel pipe; Fig. 7 is the structural representation of detailed description of the invention square steel pipe; Fig. 8 is square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete and the comparing of high-concrete filled square steel tubular post load-strain curve; Fig. 9 is the reduced graph of Fig. 8, is square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete (c) and the comparing of high-concrete filled square steel tubular post (d) load-strain curve.
Embodiment 1
See accompanying drawing 1,2,3,4,6, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention, comprises peg 1, ring-shaped stirrup 2, square steel pipe 3, concrete 4 and shaped steel 5; Described ring-shaped stirrup 2 is single annulus, and the spacing between adjacent two ring-shaped stirrups 2 is 30 ~ 80mm, and ring-shaped stirrup 2 diameter is 4 ~ 8mm, ring-shaped stirrup 2 with square steel pipe 3 inner surface tangent and spot welding fix; Described square steel pipe 3 is bent by the rectangular steel plates of two pieces of formed objects, then by shaping for two half section butt welding; Described square steel pipe 3 is uninterrupted at bean column node place b; Built high-strength concrete 4 in described square steel pipe 3, the ratio of described square steel pipe volume steel ratio and stirrup volume steel ratio is between 1:3 ~ 3:1.
Embodiment 2
See accompanying drawing 1,2,3,4,7, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention, comprises peg 1, ring-shaped stirrup 2, square steel pipe 3, concrete 4 and shaped steel 5; Described ring-shaped stirrup 2 is single annulus, and the spacing between adjacent two ring-shaped stirrups 2 is 30 ~ 80mm, and ring-shaped stirrup 2 diameter is 4 ~ 8mm, ring-shaped stirrup 2 with square steel pipe 3 inner surface tangent and spot welding fix; Described square steel pipe 3 is formed at corner welding by the rectangular steel plates of four pieces of formed objects; Described square steel pipe 3 is uninterrupted at bean column node place b; Built high-strength concrete 4 in described square steel pipe 3, the ratio of described square steel pipe volume steel ratio and stirrup volume steel ratio is between 1:3 ~ 3:1.
Embodiment 3
See accompanying drawing 1,2,3,5,6, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention, comprises peg 1, ring-shaped stirrup 2, square steel pipe 3, concrete 4 and shaped steel 5; Described ring-shaped stirrup 2 is conveyor screw stirrup, and the spacing of conveyor screw stirrup is 30 ~ 80mm, and conveyor screw stirrup diameter is 4 ~ 8mm, ring-shaped stirrup 2 with square steel pipe 3 inner surface tangent and spot welding fix; Described square steel pipe 3 is bent by the rectangular steel plates of two pieces of formed objects, then by shaping for two half section butt welding; Described square steel pipe 3 is uninterrupted at bean column node place b; Built high-strength concrete 4 in described square steel pipe 3, the ratio of described square steel pipe volume steel ratio and stirrup volume steel ratio is between 1:3 ~ 3:1.
Embodiment 4
See accompanying drawing 1,2,3,5,7, square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete of the present invention, comprises peg 1, ring-shaped stirrup 2, square steel pipe 3, concrete 4 and shaped steel 5; Ring-shaped stirrup 2 is conveyor screw stirrup, and the spacing of conveyor screw stirrup is 30 ~ 80mm, and conveyor screw stirrup diameter is 4 ~ 8mm, ring-shaped stirrup 2 with square steel pipe 3 inner surface tangent and spot welding fix; Described square steel pipe 3 is formed at corner welding by the rectangular steel plates of four pieces of formed objects; Described square steel pipe 3 is uninterrupted at bean column node place b; Built high-strength concrete 4 in described square steel pipe 3, the ratio of described square steel pipe volume steel ratio and stirrup volume steel ratio is between 1:3 ~ 3:1.
Claims (19)
1. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete, high-strength concrete column comprises ring-shaped stirrup (2), square steel pipe (3) and high-strength concrete (4), it is characterized in that peg (1) and shaped steel (5) are arranged vertically within square steel pipe (3) inwall, and be welded on square steel pipe (3) inwall, outer shroud and square steel pipe (3) inwall of ring-shaped stirrup (2) are tangent sheathed, ring-shaped stirrup (2) is connected on square steel pipe (3) inwall by spot welding, is cast with high-strength concrete (4) in square steel pipe (3); Between peg (1) equidistantly or unequal-interval arrangement, between shaped steel (5) equidistantly or unequal-interval arrangement or between peg (1) and shaped steel (5) equidistant or unequal-interval arrange, peg (1) and shaped steel (5) play Transfer of Shear effect, peg (1) is arranged in square steel pipe (3) inwall at non-bean column node (a) place, and shaped steel (5) is arranged in square steel pipe (3) inwall at bean column node (b) place; Square steel pipe (3) is uninterrupted at bean column node (b) place.
2. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 1, it is characterized in that ring-shaped stirrup (2) and square steel pipe (3) inner surface adopt spot welding to fix, ring-shaped stirrup (2) equidistantly arranges, and ring-shaped stirrup (2) plays effect of contraction to high-strength concrete (4).
3. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 1, it is characterized in that described ring-shaped stirrup (2) is annular stirrup, spacing described in adjacent two between ring-shaped stirrup (2) is 30mm ~ 80mm, and described ring-shaped stirrup (2) diameter is 4mm ~ 8mm.
4. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 3, is characterized in that described square steel pipe (3) is formed at corner welding by the rectangular steel plates of four pieces of formed objects.
5. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 4, it is characterized in that four block plates are provided with peg (1) at the rotation angle position of split, peg (1) on four block plates is overlap joint or docking mutually, and the peg (1) overlapped or be docking together also welds together by four block plates while rotation angle position butt welding is shaping.
6. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 4, it is characterized in that four block plates only have a block plate to be provided with peg (1) at the rotation angle position of split, and peg (1) abuts against on adjacent steel plate, the peg abutted against on adjacent steel plate (1) is also welded on steel plate by four block plates while rotation angle position butt welding is shaping.
7. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 3, is characterized in that described square steel pipe (3) is bent by the rectangular steel plates of two pieces of formed objects, then by shaping for two half section bending steel plate make-up butt welding.
8. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 7, it is characterized in that two pieces of bending steel plates are provided with peg (1) at the rotation angle position of make-up split, peg (1) on two pieces of bending steel plates is overlap joint or docking mutually, is also welded together by the peg (1) overlapped or be docking together while two half section bending steel plate make-up butt welding are shaping.
9. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 7, it is characterized in that two pieces of bending steel plates only have one piece of bending steel plate to be provided with peg (1) at the rotation angle position of make-up split, and peg (1) abuts against on adjacent bending steel plate, be also welded near the peg (1) on Adjacent fold steel plate on steel plate while two half section bending steel plate make-up butt welding are shaping.
10. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 1, it is characterized in that described ring-shaped stirrup (2) is spiral stirrup, spacing described in adjacent two between ring-shaped stirrup (2) is 30mm ~ 80mm, and described ring-shaped stirrup (2) diameter is 4mm ~ 8mm.
11. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 10, is characterized in that described square steel pipe (3) is formed at corner welding by the rectangular steel plates of four pieces of formed objects.
12. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 11, it is characterized in that four block plates are provided with peg (1) at the rotation angle position of split, peg (1) on four block plates is overlap joint or docking mutually, and the peg (1) overlapped or be docking together also welds together by four block plates while rotation angle position butt welding is shaping.
13. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 11, it is characterized in that four block plates only have a block plate to be provided with peg (1) at the rotation angle position of split, and peg (1) abuts against on adjacent steel plate, the peg abutted against on adjacent steel plate (1) is also welded on steel plate by four block plates while rotation angle position butt welding is shaping.
14. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 10, is characterized in that described square steel pipe (3) is bent by the rectangular steel plates of two pieces of formed objects, then by shaping for two half section butt welding.
15. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 14, it is characterized in that two pieces of bending steel plates are provided with peg (1) at the rotation angle position of make-up split, peg (1) on two pieces of bending steel plates is overlap joint or docking mutually, is also welded together by the peg (1) overlapped or be docking together while two half section bending steel plate make-up butt welding are shaping.
16. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 14, it is characterized in that two pieces of bending steel plates only have one piece of bending steel plate to be provided with peg (1) at the rotation angle position of make-up split, and peg (1) abuts against on adjacent bending steel plate, be also welded near the peg (1) on Adjacent fold steel plate on steel plate while two half section bending steel plate make-up butt welding are shaping.
17. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 1, is characterized in that peg (1) length be arranged in square steel pipe (3) is different.
18. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 17, is characterized in that long peg (1) and short peg (1) are disposed alternately in square steel pipe (3).
19. square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete according to claim 17, is characterized in that the peg (1), of a circle length encloses short peg (1), the again peg (1) of a circle length and is disposed alternately in square steel pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210108806.3A CN102619303B (en) | 2012-04-14 | 2012-04-14 | Square steel pipe high-strength concrete post restricted by internally tangent annular hoop reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210108806.3A CN102619303B (en) | 2012-04-14 | 2012-04-14 | Square steel pipe high-strength concrete post restricted by internally tangent annular hoop reinforcement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102619303A CN102619303A (en) | 2012-08-01 |
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| CN109989528A (en) * | 2019-04-26 | 2019-07-09 | 中建四局第六建筑工程有限公司 | A kind of hoop node structure that enhancing rod iron is connect with Combined concrete |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1987012A (en) * | 2006-12-22 | 2007-06-27 | 哈尔滨工业大学 | Steel tube binding type steel high strength concrete pole |
| CN101818543A (en) * | 2010-05-28 | 2010-09-01 | 中南大学 | Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete |
| CN202519882U (en) * | 2012-04-14 | 2012-11-07 | 中南大学 | Square steel tube inscribed circular stirrup constraint high-strength concrete column |
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| TWM271896U (en) * | 2005-03-18 | 2005-08-01 | Runhorn Pretech Eng Co Ltd | Assembly structure for spiral stirrups and steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1987012A (en) * | 2006-12-22 | 2007-06-27 | 哈尔滨工业大学 | Steel tube binding type steel high strength concrete pole |
| CN101818543A (en) * | 2010-05-28 | 2010-09-01 | 中南大学 | Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete |
| CN202519882U (en) * | 2012-04-14 | 2012-11-07 | 中南大学 | Square steel tube inscribed circular stirrup constraint high-strength concrete column |
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