CN204081260U - A kind of ultra-large type H type cross section composite steel column - Google Patents
A kind of ultra-large type H type cross section composite steel column Download PDFInfo
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- CN204081260U CN204081260U CN201420499495.2U CN201420499495U CN204081260U CN 204081260 U CN204081260 U CN 204081260U CN 201420499495 U CN201420499495 U CN 201420499495U CN 204081260 U CN204081260 U CN 204081260U
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Abstract
The utility model discloses a kind of ultra-large type H type cross section composite steel column, comprise two blocks of i iron and be connected web; Described two blocks of i iron are arranged on described connection web both sides respectively, and the cross section after installation is H type; Upper surface and the both sides i iron of described connection web form concave structure, are provided with stiffener along concave structure, on stiffener, are provided with bracing piece.Steel column described in the utility model, while ensure that post bearing capacity, simplify the structure of post to greatest extent, raw material are saved, save cost, manufacturing process is simple and can ensure installation accuracy, adds efficient construction usable floor area, reduce dead load simultaneously, reduce structural seismic response.
Description
Technical field
The present invention relates to a kind of steel work, be specifically related to a kind of ultra-large type H type cross section composite steel column.
Background technology
Greenery patches, Wuhan is centrally located at Binjiang business district, Wuchang nucleus, and face each other across the river with century-old outbeach, Hankow, geographical position is very superior, is the key area of Wuhan new round urban development.Center, greenery patches, Wuhan is made up of handle official business auxiliary building, a building block of flats and annex of a king-tower building, building, a building, wherein king-tower building basement 6 floor, and 125 layers on the ground, superstructure area 32.3 ten thousand square metres, total building height is 606 meters.Be a comprehensive building integrating office, exhibitions, hotel, sightseeing amusement, business etc., Wuhan Super High landmark after building up, will be become.
High building framework adopts the structural system being applicable to commercial super highrise building: mega-frame-Core Walls Structure-cantilever truss structure system.This system is made up of three parts: the Reinforced Concrete Core Walls Structure of built-in reinforced concrete column and steel plate, housing profile steel concrete column and floor girder steel form mega-frame, the connection that respective storey position arranges endless belt truss, semi-girder truss strengthens housing and inner core.Underground steel work forms primarily of 12 huge posts of reinforcing bar, floor girder steel, Core Walls Structure reinforced concrete column steel plate shear force wall three parts,
The huge post of reinforcing bar comprises combination H type cross section and cross section; Combination H type cross section huge column sectional length is longer, and segment shape size is comparatively large, and heavier-weight, belong to overlength, ultra-wide component, larger on transport impact.The huge column sectional structure of reinforcing bar is relatively simple, and connected only only have floor girder steel bracket, therefore only there is stiffening rib its inside in local.Because huge column sectional appearance and size is large, web height is high, and structure easily produces distortion, therefore needs the reinforcement considering structure, prevents from having bad luck, produces plastic strain in hoisting process.Huge column sectional is higher to profile dimension precision requirement, should strictly control when factory process makes.
Summary of the invention
Goal of the invention: in order to solve transport inconvenience in work progress, on-the-spot difficulty of processing is large, and working face requires high problem, and quality control of being more convenient for, saving installation cost, the invention provides a kind of ultra-large type H type cross section composite steel column and preparation method thereof.
Technical scheme: ultra-large type H type cross section of the present invention composite steel column, comprises two blocks of i iron and be connected web; Described two blocks of i iron are arranged on described connection web both sides respectively, and the cross section after installation is H type; Upper surface and the both sides i iron of described connection web form concave structure, are provided with stiffener along concave structure, on stiffener, are provided with bracing piece.
Described i iron side is provided with bracket and peg.
Described ultra-large type H type cross section composite steel column is of a size of 4050x2350x70x80mm, adopts Q345GJC-Z25 steel plate to make.
Described two blocks of i iron are not parallel setting, and angle is each other 1.5 ± 0.2 degree.
The preparation method of described ultra-large type H type cross section composite steel column, comprises the steps:
(1) adopt 2000 tons of hydraulic presses to i iron be connected web and carry out leveling, numerical control vertical bar cutting machine or numerical control plasma cutting machine is adopted to cut bracket, peg, reserve welding contracted quantity and allowance during cutting, carry out after cutting filling up, polishing, except stain and burr;
(2) on the platform of workshop, draw relevant huge post center line, bracket center line, angle line, the bracket end face tongue and groove position line, arrange horizontal moulding bed, horizontal moulding bed divides three row settings, middle moulding bed is high, both sides moulding bed is low;
(3) locate on the middle moulding bed of horizontal moulding bed, connection web is installed, the both sides moulding bed of horizontal moulding bed is located successively, i iron is installed;
(4) connection web is welded with the junction of both sides i iron;
(5) stiffener and bracing piece are installed;
(6) draw control line, mounted component is corrected, detected, end mill is carried out to H type end side;
(7) locate in i iron side, bracket is installed and welds, in location, i iron side, peg is installed and welds;
(8) overall measurement, checks and accepts.
By web center line and the outer edge alignment ground position line when described step (3) comprises location, control the goodness of fit of its end and ground location simultaneously.Location is afterwards correct and moulding bed spot welding is firm; Parts locally flatness is no more than 2mm, appearance and size ± 1mm, rigging datum line ± 0.5mm.During component location, with one end for just to carry out processing and fabricating as end, surplus is placed on other one end.
The welding of described step (4) comprising: adopt electric boiling plate butt welded seam both sides to carry out preheating, strictly monitor by electrical heating digital temperature control case and tempilstick, submerged arc welding is adopted after preheating, spot welding connects the junction of web upper surface and both sides i iron, groove depth one half to be welded to stands up and carries out the junction that back chipping is welded to connect web lower surface and both sides i iron again, the soldered junction connecing web upper surface and both sides i iron is stood up after being welded to half groove depth equally, be symmetrically welded by constantly standing up according to this, control welding deformation, postwelding carrying out flaw detection; Iron rust, greasy dirt etc. within the 50mm scope of commissure should carry out polishing and clean out, until just can carry out assembled after exposing metallic luster; Special i iron automatic assembling or dedicated set assembling platform are assembled into H type component, i iron be connected web center line and must align; The welding material that the assembled tacking of i iron adopts must be identical with the requirement of formal weld seam, what the leg of tacking should not be greater than design weld seam must be greater than 8mm, tack weld length is preferably 500mm ~ 600mm, and tacking must not have crackle, pore, slag inclusion, otherwise again welds after must removing.
Described step (6) comprising: carry out check measurement to member integrated, the particularly sectional dimension at the upper and lower two ends of steel column and verticality, the straightness accuracy of connection web and i iron, inspection must be measured by full-time inspection personnel comprehensively, ultrasonic testing/ ultrasonic examination is carried out to principal weld simultaneously, the method adopting draw point to rule after meeting the demands marks the end mill Working position line of upper and lower end face, and develop and print with ocean and mark, as inspection benchmark during end mill, then carry out H type component end face end mill.
Described step (7) comprising: must position by the origin reference location line on platform during bracket location, adopt plumb bob, utilizes steel ruler, transit to coordinate location, tacking should be firm, prevent collision from producing deviation, vertically just putting installation bracket by huge post, bracket welding adopts CO
2gas shielded arc welding welds, and welding sequence employing is first soldered connects web vertical fillet weld, the flat fillet weld of rear weldering i iron; According to technological requirement before welding, for needing the position of preheated weld to adopt ceramic electric heating plate to carry out preheating, and measure preheat temperature with tempilstick; The control of interlayer temperature should be carried out in time to welding position in welding process.
Described step (8) comprising: total powerstation and ground position line method need be adopted to carry out composite measurement, to guarantee its precision; Member Welding corrects rear tolerance: steel column height: ± 1mm, steel column width; ± 2mm, web off-centring: ± 1mm, frange plate verticality; ± 2mm, shaft bend arrow degree: L/1000mm.And be not more than 10mm, web local planeness: 2mm.
Beneficial effect: ultra-large type H type cross section of the present invention composite steel column and preparation method thereof tool has the following advantages:
1, novel in structural design of the present invention, while ensure that post bearing capacity, simplify the structure of post to greatest extent, saved raw material, save cost, add efficient construction usable floor area, reduce dead load simultaneously, reduce structural seismic response, improve support effect.
2, preparation method of the present invention, solves the problem of factorial praluction, greatly accelerates the progress of making, shortens the duration, and reasonably design decreases difficulty and the workload of welding simultaneously, convenient construction, reduces working measure expense, and saves the duration.
3, overall reasonably assembling sequence, welding sequence and welding method in the present invention, further ensure the quality of the huge post produced; Reduce the welding deformation in segmental machining process, ensure the form accuracy of large scale steel column simultaneously; Precision and overall dimension etc. in strict control installation process, ensure field erected convenient and swift and installation quality, simultaneously for reducing assembled workload.
4, the present invention is typical super-high building structure, and structure of the ultra-large type H type cross section composite steel column provided and preparation method thereof can be generalized to the construction of other high building structures, and provides convenient for crossed construction.
Accompanying drawing explanation
Fig. 1 is the structural representation of ultra-large type H type cross section composite steel column.
Fig. 2 is the schematic diagram of step (2).
Fig. 3 is the schematic diagram of step (4).
Fig. 4 is the schematic diagram of step (5).
Detailed description of the invention
Below by accompanying drawing, technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to embodiment.
embodiment 1:a kind of ultra-large type H type cross section composite steel column as shown in Figure 1, comprises two blocks of i iron 2 and is connected web 1; Two blocks of i iron 2 are arranged on respectively and connect web 1 both sides, and the cross section after installation is H type; The upper surface and the both sides i iron 2 that connect web 1 form concave structure, are provided with stiffener 3 along concave structure, on stiffener 3, are provided with bracing piece 4; I iron 2 side is provided with bracket 5 and peg 6; Two blocks of i iron 2 are in not parallel setting, and angle is each other 1.5.Ultra-large type H type cross section composite steel column adopts Q345GJC-Z25 steel plate to make, and is of a size of 4050x2350x70x80mm.
Above-mentioned ultra-large type H type cross section composite steel column is made by the following method:
(1) adopt 2000 tons of hydraulic presses to i iron be connected web and carry out leveling, numerical control vertical bar cutting machine or numerical control plasma cutting machine is adopted to cut bracket, peg, reserve welding contracted quantity and allowance during cutting, carry out after cutting filling up, polishing, except stain and burr;
(2) on the platform of workshop, draw relevant huge post center line, bracket center line, angle line, the bracket end face tongue and groove position line, arrange horizontal moulding bed, horizontal moulding bed divides three row settings, middle moulding bed is high, both sides moulding bed is low, as shown in Figure 2;
(3) locate on the middle moulding bed of horizontal moulding bed, connection web is installed, the both sides moulding bed of horizontal moulding bed is located successively, i iron is installed; Web center line and the outer edge alignment ground position line will be connected during location, control the goodness of fit of its end and ground location simultaneously.Location is afterwards correct and moulding bed spot welding is firm; Parts locally flatness is no more than 2mm, appearance and size ± 1mm, rigging datum line ± 0.5mm.During component location, with one end for just to carry out processing and fabricating as end, surplus is placed on other one end;
(4) connection web is welded with the junction 7 of both sides i iron, as shown in Figure 3; Electric boiling plate butt welded seam both sides are adopted to carry out preheating, strictly monitor by electrical heating digital temperature control case and tempilstick, submerged arc welding is adopted after preheating, spot welding connects the junction of web upper surface and both sides i iron, groove depth one half to be welded to stands up and carries out the junction that back chipping is welded to connect web lower surface and both sides i iron again, the soldered junction connecing web upper surface and both sides i iron is stood up after being welded to half groove depth equally, be symmetrically welded by constantly standing up according to this, control welding deformation, postwelding carrying out flaw detection; Iron rust, greasy dirt etc. within the 50mm scope of commissure should carry out polishing and clean out, until just can carry out assembled after exposing metallic luster; Special i iron automatic assembling or dedicated set assembling platform are assembled into H type component, i iron be connected web center line and must align; The welding material that the assembled tacking of i iron adopts must be identical with the requirement of formal weld seam, the leg of tacking should not be greater than 2/3 of design weld seam, and must not 8mm be greater than, tack weld length is preferably 500mm ~ 600mm, tacking must not have crackle, pore, slag inclusion, otherwise again welds after must removing.
(5) stiffener 3 and bracing piece 4 are installed, as shown in Figure 4;
(6) draw control line, mounted component is corrected, detected, end mill is carried out to H type end side; Check measurement is carried out to member integrated, the particularly sectional dimension at the upper and lower two ends of steel column and verticality, the straightness accuracy of connection web and i iron, inspection must be measured by full-time inspection personnel comprehensively, ultrasonic testing/ ultrasonic examination is carried out to principal weld simultaneously, the method adopting draw point to rule after meeting the demands marks the end mill Working position line of upper and lower end face, and develop and print with ocean and mark, as inspection benchmark during end mill, then carry out H type component end face end mill;
(7) locate in i iron side, bracket is installed and welds, in location, i iron side, peg is installed and welds; Must position by the origin reference location line on platform during bracket location, adopt plumb bob, utilize steel ruler, transit to coordinate location, tacking should be firm, prevents collision from producing deviation, vertically just putting installation bracket by huge post, and bracket welding adopts CO
2gas shielded arc welding welds, and welding sequence employing is first soldered connects web vertical fillet weld, the flat fillet weld of rear weldering i iron; According to technological requirement before welding, for needing the position of preheated weld to adopt ceramic electric heating plate to carry out preheating, and measure preheat temperature with tempilstick; The control of interlayer temperature should be carried out in time to welding position in welding process;
(8) overall measurement, checks and accepts; Total powerstation and ground position line method need be adopted to carry out composite measurement, to guarantee its precision; Member Welding corrects rear tolerance: steel column height: ± 1mm, steel column width; ± 2mm, web off-centring: ± 1mm, frange plate verticality; ± 2mm, shaft bend arrow degree: L/1000mm, and are not more than 10mm, web local planeness: 2mm.
As mentioned above, although represented with reference to specific preferred embodiment and described the present invention, it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite not departing from claims definition, various change can be made in the form and details to it.
Claims (3)
1. a ultra-large type H type cross section composite steel column, is characterized in that: comprise two blocks of i iron and be connected web; Described two blocks of i iron are arranged on described connection web both sides respectively, and the cross section after installation is H type; Upper surface and the both sides i iron of described connection web form concave structure, are provided with stiffener along concave structure, on stiffener, are provided with bracing piece.
2. ultra-large type H type cross section according to claim 1 composite steel column, is characterized in that: described i iron side is provided with bracket and peg.
3. ultra-large type H type cross section according to claim 1 composite steel column, is characterized in that: described two blocks of i iron are not parallel setting, and angle is each other 1.5 ± 0.2 degree.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196166A (en) * | 2014-09-01 | 2014-12-10 | 江苏沪宁钢机股份有限公司 | Ultra-large type combined H-section steel column and manufacturing method thereof |
| CN105155777A (en) * | 2015-09-29 | 2015-12-16 | 江苏沪宁钢机股份有限公司 | Steel rib double-T-shaped column and manufacturing method thereof |
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2014
- 2014-09-01 CN CN201420499495.2U patent/CN204081260U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196166A (en) * | 2014-09-01 | 2014-12-10 | 江苏沪宁钢机股份有限公司 | Ultra-large type combined H-section steel column and manufacturing method thereof |
| CN105155777A (en) * | 2015-09-29 | 2015-12-16 | 江苏沪宁钢机股份有限公司 | Steel rib double-T-shaped column and manufacturing method thereof |
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