CN104196164B - A kind of preparation method of huge cross coupled column - Google Patents
A kind of preparation method of huge cross coupled column Download PDFInfo
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- CN104196164B CN104196164B CN201410440782.0A CN201410440782A CN104196164B CN 104196164 B CN104196164 B CN 104196164B CN 201410440782 A CN201410440782 A CN 201410440782A CN 104196164 B CN104196164 B CN 104196164B
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Abstract
The invention discloses a kind of preparation method of huge cross coupled column, the huge cross coupled column of making comprises two pieces of T-steels and one block of i iron; Described T-steel is arranged on the cross section column body structure that i iron both sides form band side plate; Described column structure upper, middle and lower are respectively equipped with two-layer stiffener, on the side plate of described column structure, are provided with peg, and described i iron is provided with bracket with the junction of described stiffener.The preparation method of huge cross coupled column of the present invention, while ensure that post bearing capacity, simplifies the structure of post to greatest extent, save raw material, saved cost, add efficient construction usable floor area, reduce dead load simultaneously, reduce structural seismic response.
Description
Technical field
The present invention relates to the preparation method of a kind of steel work and steel work, be specifically related to a kind of preparation method of huge cross coupled 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 star section; Star 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 preparation method of huge cross coupled column.
Technical scheme: huge cross coupled column of the present invention, comprises two pieces of T-steels and one block of i iron; Described T-steel is arranged on the cross section column body structure that i iron both sides are formed as being with side plate; Described column structure upper, middle and lower are respectively equipped with two-layer stiffener, on the side plate of described column structure, are provided with peg, and described i iron is provided with bracket with the junction of described stiffener.
The steel plate that described column structure adopts thickness of slab 40≤t < 60mm, material is Q345GJC-Z15 or thickness of slab t >=60mm, material are that the steel plate of Q345GJC-Z25 is made.
Angle between described two T-steel plates is 1.5 ± 0.2 degree.
The preparation method of described huge cross coupled column, comprises the steps:
(1) 2000 tons of hydraulic presses are adopted to carry out leveling to i iron and T-steel, 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 cross coupled column center line, bracket center line, angle line, the bracket end face tongue and groove position line, moulding bed is set;
(3) on moulding bed, two T-steels are assembled in opposite directions, carried out automatic submerged-arc welding to fillet weld, T-steel is taken apart, corrects
;
(4) locate on moulding bed, i iron is installed, locate in the both sides of i iron, T-steel is installed, adopt gas shielded arc welding and automatic submerged arc welding to combine welding, correct after welding;
(5) stiffener is installed, welding, and carries out check measurement;
(6) end mill is carried out to cross end face, mounted component is corrected, detected;
(7) locate, bracket is installed, peg line, welding;
(8) overall measurement, checks and accepts.
Described step (4) location comprises: must detect assembling angle special sample during location, after location is correct with moulding bed spot welding firmly, 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; To polish smooth with i iron junction before installation; 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, the junction of spot welding i iron one end face and both sides T-steel, groove depth one half to be welded to stands up and carries out the junction that back chipping is welded to connect i iron other end and both sides T-steel again, the junction of the weldering former end face of i iron and both sides T-steel 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 dagger, and i iron and T-shaped plate center line 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; Check following parameter during rectification: gap: ± 1.0mm, verticality: b/200, and should not be greater than 2.0, length: ± 2.0mm, off-centring: ± 1.0mm.
Described step (5) comprising: carry out check measurement to entirety, the particularly huge sectional dimension at the upper and lower two ends of cross coupled column and verticality, the straightness accuracy of i iron and T-steel, 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 next step component end face end mill.
Described step (6) comprising: on end face machine platform, reserve huge cross coupled column center line and levelness, carry out the integral end Milling Machining of end face, should note in end mill process developing and printing as benchmark using ocean, half ocean should be stayed during end mill to develop and print, after end mill, carry out the bevel for welding cutting of segmentation interface; End mill allowable variation is: two end mills are member profile size at ordinary times: ± 2.0mm, the planeness of milling flat: 0.3mm, and milling flat is to the verticality L/1500 of axis.
Described step (7) comprising: before bracket is installed, the verticality of bracket, straightness accuracy, planeness should have been corrected, and first carry out the drilling of bolt hole, just can install after meeting the requirements, interim location-plate is adopted to position and adjust during installation, must ensure the correct of bracket position, particularly the distance of bolt hole group and steel column center line will ensure, simultaneously the angle of priority control bracket and other relative positions; Appearance of weld effect between peg with steel column also has certain relation with porcelain ring with welding, before carrying out welding of peg certain note peg and to weld with porcelain ring between the goodness of fit, must fit tightly.
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; Bending arrows degree: the L/1000mm of ± 2mm, shaft and be not more than 10mm, web locally planeness 2mm, shaft distortion: H/250 and be not more than 5mm.
Beneficial effect: huge cross coupled column of the present invention 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 huge cross coupled 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 structural representation of the present invention.
Fig. 2 is decomposition texture schematic diagram of the present invention.
Fig. 3 is the schematic diagram of step (3).
Fig. 4 is the schematic diagram of step (4).
Fig. 5 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 described embodiment.
embodiment 1:huge cross coupled column as depicted in figs. 1 and 2, comprises two pieces of T-steels 2 and one block of i iron 1; T-steel 2 is arranged on the cross section column body structure that i iron 1 both sides are formed as being with side plate, and the angle between two T-steel 2 plates is 1.5 degree; Column structure upper, middle and lower are respectively equipped with two-layer stiffener 3, on the side plate of column structure, are provided with peg 5, and i iron 1 is provided with bracket 4 with the junction of stiffener 3.
The steel plate that column structure adopts thickness of slab 45mm, material is Q345GJC-Z15 and thickness of slab 60mm, material are that the steel plate of Q345GJC-Z25 is made.
The preparation method of above-mentioned huge cross coupled column, specifically comprises the steps:
(1) 2000 tons of hydraulic presses are adopted to carry out leveling to i iron and T-steel, 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 cross coupled column center line, bracket center line, angle line, the bracket end face tongue and groove position line, moulding bed is set;
(3) on moulding bed, two T-steels assembled in opposite directions, as shown in Figure 3, automatic submerged-arc welding carried out to fillet weld, T-steel is taken apart, correct
;
(4) locate on moulding bed, i iron is installed, locate in the both sides of i iron, T-steel is installed, adopt gas shielded arc welding and automatic submerged arc welding to combine welding, correct after welding, as shown in Figure 4; Must detect assembling angle and reversible deformation value special sample during location, after location is correct with moulding bed spot welding firmly, 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; To polish smooth with i iron junction before installation; 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, the junction of spot welding i iron one end face and both sides T-steel, groove depth one half to be welded to stands up and carries out the junction that back chipping is welded to connect i iron other end and both sides T-steel again, the junction of the weldering former end face of i iron and both sides T-steel 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 dagger, and i iron and T-shaped plate center line 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; Check following parameter during rectification: gap: ± 1.0mm, verticality: b/200, and should not be greater than 2.0, length: ± 2.0mm, off-centring: ± 1.0mm;
(5) stiffener, welding are installed, as shown in Figure 5, and carry out check measurement; Check measurement is carried out to entirety, the particularly huge sectional dimension at the upper and lower two ends of cross coupled column and verticality, the straightness accuracy of i iron and T-steel, 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 next step component end face end mill;
(6) end mill is carried out to cross end face, mounted component is corrected, detected; End face machine platform is reserved center line and the levelness of huge cross coupled column, carry out the integral end Milling Machining of end face, should note in end mill process developing and printing as benchmark using ocean, half ocean during end mill, should be stayed to develop and print, after end mill, carry out the bevel for welding cutting of segmentation interface; End mill allowable variation is: two end mills are member profile size at ordinary times: ± 2.0mm, the planeness of milling flat: 0.3mm, and milling flat is to the verticality L/1500 of axis;
(7) locate, bracket is installed, peg line, welding; Before bracket is installed, the verticality of bracket, straightness accuracy, planeness should have been corrected, and first carry out the drilling of bolt hole, just can install after meeting the requirements, interim location-plate is adopted to position and adjust during installation, must ensure the correct of bracket position, particularly the distance of bolt hole group and steel column center line will ensure, simultaneously the angle of priority control bracket and other relative positions; Appearance of weld effect between peg with steel column also has certain relation with porcelain ring with welding, before carrying out welding of peg certain note peg and to weld with porcelain ring between the goodness of fit, must fit tightly;
(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; Bending arrows degree: the L/1000mm of ± 2mm, shaft and be not more than 10mm, web locally planeness 2mm, shaft distortion: H/250 and be not more than 5mm.
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 (6)
1. a preparation method for huge cross coupled column, described huge cross coupled column comprises two pieces of T-steels and one block of i iron; Described T-steel is arranged on the cross section column body structure that i iron both sides are formed as being with side plate; Described column structure upper, middle and lower are respectively equipped with two-layer stiffener, on the side plate of described column structure, are provided with peg, and described i iron is provided with bracket with the junction of described stiffener; It is characterized in that, the preparation method of described huge cross coupled column comprises the steps:
(1) 2000 tons of hydraulic presses are adopted to carry out leveling to i iron and T-steel, 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 cross coupled column center line, bracket center line, angle line, the bracket end face tongue and groove position line, moulding bed is set;
(3) on moulding bed, two T-steels are assembled in opposite directions, carried out automatic submerged-arc welding to fillet weld, T-steel is taken apart, corrects
;
(4) locate on moulding bed, i iron is installed, locate in the both sides of i iron, T-steel is installed, adopt gas shielded arc welding and automatic submerged arc welding to combine welding, correct after welding;
(5) stiffener is installed, welding, and carries out check measurement;
(6) end mill is carried out to cross end face, mounted component is corrected, detected;
(7) locate, bracket is installed, peg line, welding;
(8) overall measurement, checks and accepts.
2. the preparation method of huge cross coupled column according to claim 1, it is characterized in that: described step (4) location comprises: must detect assembling angle special sample during location, 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 location, with one end for just to carry out processing and fabricating as end, surplus is placed on other one end; To polish smooth with i iron junction before installation; 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, the junction of spot welding i iron one end face and both sides T-steel, groove depth one half to be welded to stands up and carries out the junction that back chipping is welded to connect i iron other end and both sides T-steel again, the junction of the weldering former end face of i iron and both sides T-steel 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 within the 50mm scope of commissure, greasy dirt 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 dagger, and i iron and T-shaped plate center line 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; Check following parameter during rectification: gap: ± 1.0mm, verticality: b/200, and should not be greater than 2.0mm, length: ± 2.0mm, off-centring: ± 1.0mm.
3. the preparation method of huge cross coupled column according to claim 1, it is characterized in that: described step (5) comprising: carry out check measurement to entirety, the particularly huge sectional dimension at the upper and lower two ends of cross coupled column and the verticality of i iron and T-steel, straightness accuracy, 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 next step component end face end mill is carried out.
4. the preparation method of huge cross coupled column according to claim 1, it is characterized in that: described step (6) comprising: on end face machine platform, reserve huge cross coupled column center line and levelness, carry out the integral end Milling Machining of end face, should note in end mill process developing and printing as benchmark using ocean, half ocean should be stayed during end mill to develop and print, after end mill, carry out the bevel for welding cutting of segmentation interface; End mill allowable variation is: two end mills are member profile size at ordinary times: ± 2.0mm, the planeness of milling flat: 0.3mm, and milling flat is to the verticality L/1500 of axis.
5. the preparation method of huge cross coupled column according to claim 1, it is characterized in that: described step (7) comprising: before bracket is installed, the verticality of bracket, straightness accuracy, planeness should have been corrected, and first carry out the drilling of bolt hole, just can install after meeting the requirements, interim location-plate is adopted to position and adjust during installation, the correct of bracket position must be ensured, particularly the distance of bolt hole group and steel column center line will ensure, simultaneously the angle of priority control bracket and other relative positions; Appearance of weld effect between peg with steel column also has certain relation with porcelain ring with welding, before carrying out welding of peg certain note peg and to weld with porcelain ring between the goodness of fit, must fit tightly.
6. the preparation method of huge cross coupled column according to claim 1, is characterized in that: 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; Bending arrows degree: the L/1000mm of ± 2mm, shaft and be not more than 10mm, web locally planeness 2mm, shaft distortion: H/250 and be not more than 5mm.
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| CN105155777B (en) * | 2015-09-29 | 2017-07-07 | 江苏京沪重工有限公司 | A kind of double-T shaped post of reinforcing bar and its processing method |
| CN105370215B (en) * | 2015-10-13 | 2018-10-16 | 南阳二机石油装备集团股份有限公司 | A kind of ocean bottle-neck derrick and preparation method thereof |
| CN106736286A (en) * | 2016-12-22 | 2017-05-31 | 浙江精工钢结构集团有限公司 | A kind of cross based on double-layer circular sleeve pipe mechanism turns circular tube structure and preparation method |
| CN107617857A (en) * | 2017-10-26 | 2018-01-23 | 十四冶建设集团云南安装工程有限公司 | Heavy crossed steel column makes engineering method |
| CN108798033A (en) * | 2018-06-11 | 2018-11-13 | 上海通用建筑工程有限公司 | A kind of manufacture installation method of structural steelwork gravity column |
| CN111549898A (en) * | 2020-04-25 | 2020-08-18 | 上海洪铺钢结构工程有限公司 | Steel structure and welding process thereof |
| CN112453661A (en) * | 2020-11-10 | 2021-03-09 | 新疆冶金建设(集团)有限责任公司 | Welding manufacturing method for controlling thermal deformation of cross-shaped steel column |
| CN112681759A (en) * | 2020-12-25 | 2021-04-20 | 中铁十局集团有限公司 | Construction method of cross steel rib of stiff column |
| CN113290332A (en) * | 2021-05-21 | 2021-08-24 | 浙江东南网架股份有限公司 | Manufacturing method of multi-angle complex bracket cross-shaped column |
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