CN104631707A - Combined square steel pipe concrete column and construction method - Google Patents
Combined square steel pipe concrete column and construction method Download PDFInfo
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- CN104631707A CN104631707A CN201510033302.3A CN201510033302A CN104631707A CN 104631707 A CN104631707 A CN 104631707A CN 201510033302 A CN201510033302 A CN 201510033302A CN 104631707 A CN104631707 A CN 104631707A
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Abstract
The invention provides a combined square steel pipe concrete column and a construction method. The combined square steel pipe concrete column comprises L-shaped half steel pipes, pins, vertical rods, a transverse rod and concrete; two rows of pins are arranged on the inner wall of each of the L-shaped half steel pipes; the vertical rods are connected through the traverse rod and clamped into the two rows of pins; two L-shaped half steel pipes are welded into a square steel pipe in which the concrete is poured; when constructing the column, a steel plate is processed into the L-shaped half steel pipes, the pins are welded on the inner walls of the L-shaped half steel pipes, the transverse rod is welded between the two vertical rods, the two L-shaped half steel pipes are integrally buckled, and the vertical rods are inserted into the pins, so as to weld the two L-shaped half steel pipes into a whole, and moreover, the concrete is poured into the square steel pipe. The combined square steel pipe concrete column can overcome the shortage of a square steel pipe concrete column and has the advantages of being high in bearing capacity and high in fire resistance; the construction method can solve the problem of difficult construction of the inside of the square steel pipe.
Description
Technical field
The present invention relates to steel core concrete column field in civil engineering.
Background technology
The advantages such as steel core concrete column has that bearing capacity is high, plasticity and good toughness, easy construction, fire resistance are better, the application in heavy duty, large-span structure is more and more extensive.Concrete-filled steel square tubular column has the advantages such as joint structure is simple, anti-bending strength is good, but also there are some shortcomings, one is that square steel pipe is less to the concrete effect of contraction in inside, and concrete bearing power increase is few, and comparatively concrete-filled circular steel tube column is low for the bearing capacity of concrete-filled steel square tubular column; Two be square steel pipe in concrete outside, easily lose bearing capacity in fire, fire resistance is poorer than reinforced concrete post; Three is that bonding between steel pipe and concrete is more weak, and the poisson's ratio of load-bearing initial stage steel pipe is greater than concrete poisson's ratio, easily departs between steel pipe and concrete.In order to overcome the above-mentioned shortcoming of concrete-filled steel square tubular column, need a kind of novel concrete-filled steel square tubular column and construction method.
Summary of the invention
The problem that concrete-filled steel square tubular column is less to the concrete effect of contraction in inside in order to overcome, steel pipe and concrete easily depart from, improve the fire resistance of concrete-filled steel square tubular column, the present invention discloses a kind of composite square steel tube concrete column and construction method.
The technical scheme of composite square steel tube concrete column of the present invention is: composite square steel tube concrete column is made up of L shape semi-steel pipe, pin, montant, cross bar and concrete.The length of L shape semi-steel pipe two limb is equal, the inwall of every limb vertically arranges two row's pins, the head of a nail interior side contacts of montant and pin, be stuck in two row's pins, relative two montants in position are coupled together by cross bar, two L shape semi-steel pipe welding form square steel pipe, the inner concreting of square steel pipe.Two row's pins are symmetrical along the center line of L shape semi-steel pipe limb, and clear distance equals the cross-sectional length of montant, and pin is vertically uniformly distributed, and spacing is 0.5 times of L shape semi-steel pipe limb length, and on two limbs, the height of pin is different, every one deck height of pin difference 100mm.The height of montant is identical with the height of L shape semi-steel pipe.Cross bar is vertically uniformly distributed, and spacing is 0.5 times of L shape semi-steel pipe limb length, and every one deck cross bar is identical with the centre-height of pin.
At the load-bearing initial stage, the poisson's ratio of steel is greater than concrete poisson's ratio, and the outside distortion of steel pipe is greater than concrete, can strengthen the interaction between steel pipe and concrete, avoid the phenomenon occurring that steel pipe and concrete depart from by pin; The load-bearing later stage, the poisson's ratio of steel is less than concrete poisson's ratio, concrete outwards expands, by montant, cross bar and pin, retrain the distortion of two opposite side steel pipe walls, can confined concrete better, for concrete provides larger confined pressure power, improve concrete compressive strength, and then improve the bearing capacity of post.Montant has concrete protective, heats up comparatively slow in fire, and depression of bearing force is also comparatively slow, can improve the fire endurance of post.
The construction method of composite square steel tube concrete column of the present invention is: the L shape semi-steel pipe limb such as steel plate being processed into, the inwall of L shape semi-steel pipe positions the position of pin, two row's pins are symmetrical along the center line of limb, clear distance equals the cross-sectional length of montant, pin is vertically uniformly distributed, spacing is 0.5 times of L shape semi-steel pipe limb length, on two limbs, the height of pin is different, and every one deck height of pin difference 100mm, the inwall of the every limb of L shape semi-steel pipe welds pin, with steel plate processing montant and cross bar, the height of montant is identical with the height of L shape semi-steel pipe, montant positions the position of cross bar, cross bar is vertically uniformly distributed, spacing is 0.5 times of L shape semi-steel pipe limb length, the centre-height of two montant cross tubes is identical with the centre-height of pin on L shape semi-steel pipe one limb, the centre-height of another two montant cross tubes is identical with the centre-height of pin on another limb of L shape semi-steel pipe, cross bar is welded between two montants, 3rd montant welds cross bar, by the cross bar on the 3rd montant through being linked to be two overall montants, and the 4th montant is welded on cross bar, two L shape semi-steel pipes are buckled together, montant is penetrated in pin from end, two L shape semi-steel pipes are welded into entirety, at the inner concreting of square steel pipe.
Composite square steel tube concrete column of the present invention improves square steel pipe to the concrete effect of contraction in inside, the fire resistance that enhances connection between concrete and square steel pipe, improve post, and described construction method solves the not easy working problem in square steel pipe inside.The present invention can overcome the shortcoming of concrete-filled steel square tubular column, has the advantages such as bearing capacity is high, fire resistance is good.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is the schematic cross-section of composite square steel tube concrete column of the present invention.
Fig. 2 is the axonometric drawing of L shape semi-steel pipe of the present invention and pin.
Fig. 3 is the axonometric drawing of montant of the present invention and cross bar.
Fig. 4 is work progress figure of the present invention.
In figure: 1-L shape semi-steel pipe, 2-pin, 3-montant, 4-cross bar, 5-concrete, 6-weld seam.
Detailed description of the invention
As Figure 1-3, a kind of composite square steel tube concrete column, is made up of L shape semi-steel pipe (1), pin (2), montant (3), cross bar (4) and concrete (5).Two limb length of L shape semi-steel pipe (1) are equal, the inwall of every limb is vertically arranged two row's pins (2), two rows' pin (2) are symmetrical along the center line of limb, clear distance equals the cross-sectional length of montant (3), pin (2) is vertically uniformly distributed, spacing is 0.5 times of L shape semi-steel pipe (1) limb length, and on two limbs, the height of pin (2) is different, and every one deck pin (2) highly differs 100mm.The head of a nail interior side contacts of montant (3) and pin (2), be stuck in two row's pins (2), the height of montant (3) is identical with the height of L shape semi-steel pipe (1).Relative two montants (3) in position are coupled together by cross bar (4), and cross bar (4) is vertically uniformly distributed, and spacing is long 0.5 times of L shape semi-steel pipe (1) limb, and every one deck cross bar (4) is identical with the centre-height of pin (2).Two L shape semi-steel pipes (1) are buckled together, and connect into entirety by weld seam (6), the inner concreting (5) of square steel pipe.
Fig. 4 is the work progress figure of composite square steel tube concrete column of the present invention, and whole work progress is divided into a, b, c, d, e five steps, and concrete work progress is: step a, the L shape semi-steel pipe (1) of limb such as steel plate to be processed into, step b, the inwall of L shape semi-steel pipe (1) positions the position of pin (2), two rows' pin (2) are symmetrical along the center line of limb, clear distance equals the cross-sectional length of montant (3), pin (2) is vertically uniformly distributed, and spacing is 0.5 times of L shape semi-steel pipe (1) limb length, and on two limbs, the height of pin (2) is different, every one deck pin (2) highly differs 100mm, and the inwall of the every limb of L shape semi-steel pipe (1) welds pin (2), step c, montant (3) and cross bar (4) is processed with steel plate, the height of montant (3) is identical with the height of L shape semi-steel pipe (1), montant (3) positions the position of cross bar (4), cross bar (4) is vertically uniformly distributed, spacing is 0.5 times of L shape semi-steel pipe (1) limb length, the centre-height of two montants (3) cross tube (4) is identical with the centre-height of pin (2) on L shape semi-steel pipe (1) limb, the centre-height of another two montants (3) cross tube (4) is identical with the centre-height of pin (2) on L shape semi-steel pipe (1) another limb, cross bar (4) is welded between two montants (3), 3rd montant (3) welds cross bar (4), by the cross bar (4) on the 3rd montant (3) through being linked to be two overall montants (3), and upper welding the 4th montant (3) of cross bar (4), two L shape semi-steel pipes (1) are buckled together by steps d, and montant (3) is penetrated in pin (2) from end, and two L shape semi-steel pipes (1) are connected into entirety by weld seam (6), step e, the inner concreting (5) of square steel pipe.
Claims (4)
1. a composite square steel tube concrete column, is made up of L shape semi-steel pipe, pin, montant, cross bar and concrete, it is characterized in that: the inwall of the every limb of L shape semi-steel pipe is vertically arranged two row's pins; The head of a nail interior side contacts of montant and pin, is stuck in two row's pins; Relative two montants in position are coupled together by cross bar.
2. composite square steel tube concrete column according to claim 1, is characterized in that: two row's pins are symmetrical along the center line of L shape semi-steel pipe limb, and clear distance equals the cross-sectional length of montant; Pin is vertically uniformly distributed; On L shape semi-steel pipe two limb, the height of pin is different, every one deck height of pin difference 100mm.
3. composite square steel tube concrete column according to claim 1, is characterized in that: cross bar is vertically uniformly distributed, and every one deck cross bar is identical with the centre-height of pin.
4. realize a construction method for composite square steel tube concrete column according to claim 1, it is characterized in that: the L shape semi-steel pipe limb such as steel plate being processed into, the inwall of L shape semi-steel pipe positions the position of pin, two row's pins are symmetrical along the center line of limb, clear distance equals the cross-sectional length of montant, pin is vertically uniformly distributed, spacing is 0.5 times of L shape semi-steel pipe limb length, on two limbs, the height of pin is different, and every one deck height of pin difference 100mm, the inwall of the every limb of L shape semi-steel pipe welds pin, with steel plate processing montant and cross bar, the height of montant is identical with the height of L shape semi-steel pipe, montant positions the position of cross bar, cross bar is vertically uniformly distributed, spacing is 0.5 times of L shape semi-steel pipe limb length, the centre-height of two montant cross tubes is identical with the centre-height of pin on L shape semi-steel pipe one limb, the centre-height of another two montant cross tubes is identical with the centre-height of pin on another limb of L shape semi-steel pipe, cross bar is welded between two montants, 3rd montant welds cross bar, by the cross bar on the 3rd montant through being linked to be two overall montants, and the 4th montant is welded on cross bar, two L shape semi-steel pipes are buckled together, montant is penetrated in pin from end, two L shape semi-steel pipes are welded into entirety, at the inner concreting of square steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510033302.3A CN104631707B (en) | 2015-01-23 | 2015-01-23 | Combined square steel pipe concrete column and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510033302.3A CN104631707B (en) | 2015-01-23 | 2015-01-23 | Combined square steel pipe concrete column and construction method |
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| Publication Number | Publication Date |
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| CN104631707A true CN104631707A (en) | 2015-05-20 |
| CN104631707B CN104631707B (en) | 2017-01-18 |
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| CN201510033302.3A Expired - Fee Related CN104631707B (en) | 2015-01-23 | 2015-01-23 | Combined square steel pipe concrete column and construction method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818575A (en) * | 2010-02-10 | 2010-09-01 | 中国建筑第七工程局有限公司 | Construction technology of cross-shaped profile steel column |
| CN203174885U (en) * | 2013-01-23 | 2013-09-04 | 中国一冶集团有限公司 | Steel pipe concrete column for increasing grip force of steel pipe and concrete |
| KR20130114535A (en) * | 2012-04-09 | 2013-10-18 | 유한회사 케이테크코리아 | Concrete filled tubular for building pillar construction |
| CN204531177U (en) * | 2015-01-23 | 2015-08-05 | 山东科技大学 | Composite square steel tube concrete column |
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2015
- 2015-01-23 CN CN201510033302.3A patent/CN104631707B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818575A (en) * | 2010-02-10 | 2010-09-01 | 中国建筑第七工程局有限公司 | Construction technology of cross-shaped profile steel column |
| KR20130114535A (en) * | 2012-04-09 | 2013-10-18 | 유한회사 케이테크코리아 | Concrete filled tubular for building pillar construction |
| CN203174885U (en) * | 2013-01-23 | 2013-09-04 | 中国一冶集团有限公司 | Steel pipe concrete column for increasing grip force of steel pipe and concrete |
| CN204531177U (en) * | 2015-01-23 | 2015-08-05 | 山东科技大学 | Composite square steel tube concrete column |
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| CN104631707B (en) | 2017-01-18 |
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