CN103481022B - A kind of Pier Formwork manufacture method - Google Patents
A kind of Pier Formwork manufacture method Download PDFInfo
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- CN103481022B CN103481022B CN201310364335.7A CN201310364335A CN103481022B CN 103481022 B CN103481022 B CN 103481022B CN 201310364335 A CN201310364335 A CN 201310364335A CN 103481022 B CN103481022 B CN 103481022B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of Pier Formwork manufacture method, comprise setting-out and number material, cutting, part is corrected, parts spelling, template is welded, weld inspection and application of spraying paint, the present invention simplifies manufacture method relative to other Pier Formwork, by its rational selection, cutting, spelling, welding and application effectively improve intensity and the precision of Pier Formwork, decrease traditional steel form to a great extent to exist from great, repeat usage is low, dismounting difficulty, operator's labour intensity is large, and the problem such as construction quality is not high, the pier stud lines making it build out are simple and direct, elegant in appearance, have and not only save material quantity but also the feature of easy construction.
Description
Technical field
The present invention relates to bridge building operations field, particularly relate to a kind of Pier Formwork manufacture method.
Background technology
Bridge pier generally means the intermediate support structure thing in multispan bridge.It produces except vertical force, horizontal force and moment of flexure except bearing superstructure, also bears the impact of wind-force, flowing water pressure and contingent seismic force, ice pressure, ship and drift.Columnar pier is the bridge pier pattern extensively adopted in current highway bridge.It is simple and direct, lucid and lively, attractive in appearance that it has lines, not only saved material quantity but also had the feature of easy construction, be specially adapted to the larger Urban Bridge of bridge width and viaduct.Columnar pier generally can be divided into the forms such as only post, twin columns and multicolumn, it can according to the wide needs of bridge and geomorphological features condition any combination, columnar pier is made up of cushion cap, pillar pier shaft and bent cap, is great cantilever box section for superstructure, and pier shaft can directly connect with beam.
Along with the develop rapidly of China's capital construction, present urban architecture structure not only only considers its using function and security, the another key factor having become Architectural Structure Design attractive in appearance.In recent years, for this frame bridge, people are more and more discontented is enough to front square-folded pier stud outward appearance, because curved surface pier stud has the outward appearance of rational stress and novelty, is therefore more and more subject to the favor of people.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of structure is simple, lines are simple and direct, elegant in appearancely reuse, easy accessibility, reduction workmen the novel Pier Formwork manufacture method of labour intensity.
For achieving the above object, the technology used in the present invention solution is: a kind of Pier Formwork manufacture method, comprises setting-out and number material, cutting, part rectification, the welding of parts spelling, template, weld inspection and application of spraying paint, specifically comprises the following steps successively.
Described setting-out and number material, welding allowance for shrinkage when setting-out and number material should be reserved making and install and cutting, plane limit and milling limit allowance, the trade mark, specification, the quality of steel material should be checked before number material, when finding that steel material not straightly has erosion rust, paint dirt affects quality, should correct, clear up after again number material, number material appearance and size tolerance is ± 1mm, shaped steel line of cut and edge-perpendicular degree tolerance are ± 2.0mm, number material before sheet material must carry out leveling process, check material, the clout after blanking must brush mark simultaneously.
Described cutting, the cutting of the main parts size of Pier Formwork will adopt accurate cutting, and hand cut is only suitable for the part that cutting back edge still needs machining; The edge of mechanical shearing blanking should neatly, impulse-free robustness, anti-mouth defect, deviation length and width degree sheared by plate is ± 2.0mm; The tolerance cutting rear accessory size should meet: automatic, be semi-automaticly cut into ± 2.0mm, and hand cut is ± 2.0mm.
Described part is corrected, the mechanical gagging of main employing or heat straightening, when its main stressed part cold-working bends, after cold-working is bending, part edge must not crack, steel material surface after gagging does not have obvious indenture and other damages, otherwise still needs to carry out shaping; When adopting heat to rectify, heat is rectified temperature and should be controlled at 600 ~ 800 DEG C, forbids burning, and after correcting, Part temperature answers Slow cooling, before being down to room temperature, must not hammering part steel, and forbid water quenching.
Described parts spelling, must carry out on special platform or in fetal membrane, and should arrange spelling location-plate on platform or moulding bed, to ensure the position of parts; Described parts spelling order is: connecting flange → circular arc panel → seam → rib, the steel beam column after spelling is qualified, should stamp numbering mark in predetermined portion.
Described template welding; adopt the welding manner that CO2 gas shielded arc welding and manual electric arc welding are commonly used; should check whether cleaning quality and the tack welding weld seam of portion faces to be welded ftracture again before welding; welding condition should be debugged in advance on unofficial workpiece, checks the equipment used, full weld between rib; flange and panel full weld; weldering height is 6mm, and rib welds with panel 15%, welds highly to be 5mm.
Described weld inspection, first carries out visual examination of weld, and all weld seams all should carry out the visual examination of 100% after weld seam cooling, face of weld should evenly, smoothly, non-wrinkle, to be interrupted and incompletely filling, and to be connected gently with base metal, to forbid there is the defect such as crackle, incomplete fusion; The defects such as secondly overlap or too high weld seam, adopts the method for grinder buffing to be ground off by unnecessary weld metal, and then face of weld pit, undercut or weld size be not enough, first clean out face of weld, then carry out repair welding; Finally excessive pore, slag inclusion, incomplete fusion, crack defect, adopt the method for carbon arc air gouging and grinder buffing to be removed by defective weld seam, then repair welding.
Described application of spraying paint, first carries out surface-treated quality examination and cleaning (dust, grease, moisture), can carry out application after qualified before application; Secondly coating needs is smooth, even, paint film bubble-free, wrinkle, without serious sagging, come off, the defect such as pin hole, crackle, holiday, finish paint color is consistent with colorimetric card; Then during application, coated amount is 200g/ ㎡, and layer of lacquer film thickness is 40 μm, can not spray paint with mixed earth contact surface.
The present invention has following beneficial effect in sum: the present invention simplifies manufacture method relative to other Pier Formwork, intensity and the precision of Pier Formwork is effectively improved by its rational selection, cutting, spelling, welding and application, decrease to a great extent traditional steel form exist from great, repeat usage is low, dismounting is difficult, operator's labour intensity is large, and the problem such as construction quality is not high, the pier stud lines making it build out are simple and direct, elegant in appearance.
Detailed description of the invention
A kind of Pier Formwork manufacture method, comprises setting-out and number material, cutting, part rectification, the welding of parts spelling, template, weld inspection and application of spraying paint.
(1) described setting-out and number material:
A. setting-out and number material should strictly be undertaken by drawing and technological requirement, and the tolerance that model, sample bar, batten make should meet the regulation of following table.
Table 1, model, sample bar, batten make tolerance
B. shaped steel line of cut and edge-perpendicular degree tolerance should be ± 2.0mm.
C. for complex-shaped parts and components, the size not easily determined in drawing, is determined after should being proofreaded by setting-out.
D. welding allowance for shrinkage when setting-out and number material should be reserved making and install and cutting, plane limit and milling limit
Deng allowance.
E. should check the trade mark, specification, the quality of steel material before number material, have erosion to become rusty when discovery steel material is not straight,
Paint dirt is when affect quality, should correct, clear up after number to expect again; Number material appearance and size tolerance is ± 1mm.
F. before number material, sheet material must carry out leveling process, checks material simultaneously.
Clout after blanking must brush mark.
(2) described cutting:
A. the main parts size of template: the cutting of flange adopts accurate cutting, hand cut is only suitable for the part that cutting back edge still needs machining.
B. mechanical shearing blanking edge should neatly, impulse-free robustness, anti-mouth, misrun defect, and meet following shearing deviation requirement: plate width length and width: ± 2.0mm
C. accurate cut edge surface quality should meet the regulation of following table.
D. the tolerance cutting rear accessory size should meet the following requirements:
Automatically, semi-automatic gas cutting: ± 2.0mm
Manual oxygen cutting: ± 2.0mm
E. carry out mach gas cutting parts again for technological requirement, its dimensional discrepancy performs by the size that technology file or drawing indicate.Or adopt milling tolerance+0.5mm.
Table 2, accurate cut edge surface quality requirements
Note: t is steel plate thickness
(3) described part is corrected:
A., when main stressed part cold-working bends, after cold-working is bending, part edge must not crack.
B. part adopts machinery to correct or heat straightening, and the tolerance after rectification should meet the regulation of following table.
Table 3, tolerance corrected by part
C. the steel material surface after gagging does not have obvious indenture and other damages, otherwise still needs to carry out
Shaping.When adopting heat to rectify, heat is rectified temperature and should be controlled and be manufactured on 600 ~ 800 DEG C, forbids burning, and after correcting, Part temperature answers Slow cooling, before being down to room temperature, must not hammering part steel, and forbid water quenching.
(4) described parts spelling:
A. the making work of Pier Formwork must be carried out on special platform or in fetal membrane, and should arrange spelling location-plate on platform or moulding bed, to ensure the position of parts.Pier mould manufacturing sequence: connecting flange → circular arc panel → seam → rib, the steel beam column after spelling is qualified, should stamp numbering mark in predetermined portion.
B. the fan-shaped full-page proof of pier shaft frustum of a cone releasing, geometric error is 1 millimeter; Diagonal error is 1 millimeter; The fan-shaped of a frustum is divided into two, is then welded into entirety with intermittent weld and carries out round as a ball (two pieces respectively round as a ball also can).Fanning strip is round as a ball first limit is stepped on to arc edges of boards after round as a ball again.。
C. the manufacture of connecting flange in two steps: the allowance segmentation blanking of first putting 5 ~ 10 millimeters by drawing, is then welded into entirety and processes.In processing rear flange, circular error is 1 millimeter.
D. install connecting flange according to drawing respectively the upper and lower of finished product frustum, with flange inner circle for basic circle carries out school circle, flange must finish center line before installing.
E. the connecting flange of pier body formwork upper-lower section must make on same drilling die, can be welded in template after paired gusset piece connection holes connection is errorless.
F. frustum formalizes qualified rear installation seam on flange, releases the line of cross rib position by figure paper size, and locates rib and carry out again school circle, and seam must tightly must not seamed and faulting of slab ends.
G. school good after frustum, just can carry out the welding of rib.Before welding, rib and rib, rib and panel etc. need closely connected.
H. the arc of arc plate should strictly be grasped before spelling, the deviation≤1mm of arbitrfary point on curve ruler.Plane template will guarantee the flatness after component spelling.
I. the foozle of template: the linearity of template: L × 0.5 ‰, L≤8m, is maximumly no more than 3mm, and L > 8m is maximum is no more than 5mm..The flatness of template: L × 1 ‰, are maximumly no more than 3mm.Two pieces of template abutment joint≤1mm, faulting of slab ends < 1mm.One piece die plates is wide, long :+0 ~+1mm.
(5) described template welding:
A. welding method: the welding method that the present invention adopts CO2 gas shielded arc welding and manual electric arc welding to commonly use.
B. the use of welding material: manual welding welding rod, all should carry out drying and processing before using.Welding wire should keep clean, should remove the greasy dirt on welding wire before weldering.
C. general technology requires:
1, should check before welding whether cleaning quality and the tack welding weld seam of portion faces to be welded ftracture, if undesirable, then it is qualified to be trimmed to.
2, welding condition should be debugged in advance on unofficial workpiece, checks the equipment used, and ensures fully to meet technological requirement.
3, full weld between rib, flange and panel full weld, weld high 6 millimeters; The weldering of rib and panel 15%, welds high 5 millimeters.
(6) described weld inspection:
A. visual examination of weld: all weld seams all should carry out the visual examination of 100% after weld seam cooling.Face of weld should evenly, level and smooth, non-wrinkle, to be interrupted and incompletely filling, and to be connected gently with base metal; Forbid there is the defect such as crackle, incomplete fusion.
Weld shape and permissible variation in dimension as shown in the table.
Table 4, weld shape and permissible variation in dimension
Unit: mm
B. overlap or too high weld seam, adopts the method for grinder buffing to be ground off by unnecessary weld metal.
C. face of weld pit, the defect such as undercut or weld size are not enough, first clean out face of weld, then carry out repair welding.
D. excessive pore, slag inclusion, incomplete fusion, crack defect, adopt the method for carbon arc air gouging and grinder buffing to be removed by defective weld seam, then repair welding.
E. weld crack must ascertain the reason before reprocessing, and formulates corresponding precautionary measures.
Must again check after all defective Weld Seam Repairations.
(7) to spray paint described in application,first carry out surface-treated quality examination and cleaning before application, after qualified, can application be carried out; Secondly coating needs is smooth, even, paint film bubble-free, wrinkle, without serious sagging, come off, pin hole, crackle, holiday defect, finish paint color is consistent with colorimetric card; Then during application, coated amount is 200g/ ㎡, and layer of lacquer film thickness is 40 μm, can not spray paint with mixed earth contact surface.
Last it is noted that above embodiment only in order to illustrate the present invention and and unrestricted technical scheme described in the invention; Therefore, although this description with reference to each above-mentioned embodiment to present invention has been detailed description, those of ordinary skill in the art should be appreciated that and still can modify to the present invention or equivalent to replace; And all do not depart from technical scheme and the improvement thereof of invention spirit and scope, it all should be encompassed in the middle of right of the present invention.
Claims (1)
1. a Pier Formwork manufacture method, comprises setting-out and number material, cutting, part rectification, the welding of parts spelling, template, weld inspection and application of spraying paint, it is characterized in that being, specifically comprise the following steps successively:
(1) described setting-out and number material, welding allowance for shrinkage when setting-out and number material should be reserved making and install and cutting, plane limit and milling limit allowance, the trade mark, specification, the quality of steel material should be checked before number material, when finding that steel material not straightly has erosion rust, paint dirt affects quality, should correct, clear up after again number material, number material appearance and size tolerance is ± 1mm, shaped steel line of cut and edge-perpendicular degree tolerance are ± 2.0mm, number material before sheet material must carry out leveling process, check material, the clout after blanking must brush mark simultaneously;
(2) described cutting, the cutting of the main parts size of Pier Formwork will adopt accurate cutting, hand cut is only suitable for the part that cutting back edge still needs machining, the edge of mechanical shearing blanking should neatly, impulse-free robustness, anti-mouth defect, deviation length and width degree sheared by plate is ± 2.0mm, the tolerance cutting rear accessory size should meet: automatic, be semi-automaticly cut into ± 2.0mm, and hand cut is ± 2.0mm;
(3) described part is corrected, and the mechanical gagging of main employing or heat straightening, when its main stressed part cold-working bends, after cold-working is bending, part edge must not crack, steel material surface after gagging does not have obvious indenture and other damages, otherwise still needs to carry out shaping, when adopting heat to rectify, heat is rectified temperature and should be controlled at 600 ~ 800 DEG C, forbid burning, after correcting, Part temperature answers Slow cooling, before being down to room temperature, must not hammering part steel, forbid water quenching;
(4) described parts spelling, must carry out on special platform or in fetal membrane, and should arrange spelling location-plate on platform or moulding bed, to ensure the position of parts; Described parts spelling order is: connecting flange → circular arc panel → seam → rib, the steel beam column after spelling is qualified, should stamp numbering mark in predetermined portion;
(5) described template welding, adopts CO
2the welding manner that gas shielded arc welding and manual electric arc welding are commonly used; should check before welding whether cleaning quality and the tack welding weld seam of portion faces to be welded ftracture; welding condition should be debugged in advance on unofficial workpiece; check the equipment used; full weld between rib, flange and panel full weld, weldering height is 6mm; rib welds with panel 15%, welds highly to be 5mm.
(6) described weld inspection, first visual examination of weld is carried out, all weld seams all should carry out the visual examination of 100% after weld seam cooling, face of weld should be even, smoothly, non-wrinkle, be interrupted and incompletely filling, and be connected gently with base metal, forbid there is crackle, incomplete fusion defect, secondly overlap or too high weld seam, the method of grinder buffing is adopted to be ground off by unnecessary weld metal, then face of weld pit, undercut or the not enough defect of weld size, first face of weld is cleaned out, carry out repair welding again, finally excessive pore, slag inclusion, incomplete fusion, crack defect, the method of carbon arc air gouging and grinder buffing is adopted to be removed by defective weld seam, then repair welding,
(7) to spray paint described in application, first surface-treated quality examination and cleaning is carried out before application, can carry out application after qualified, secondly coating needs is smooth, even, paint film bubble-free, wrinkle, without serious sagging, come off, pin hole, crackle, holiday defect, finish paint color is consistent with colorimetric card, and then during application, coated amount is 200g/ ㎡, layer of lacquer film thickness is 40 μm, can not spray paint with mixed earth contact surface.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104153567A (en) * | 2014-08-07 | 2014-11-19 | 镇江洋溢汽车部件有限公司 | Manufacturing process of light building templates |
| CN105414896A (en) * | 2015-12-09 | 2016-03-23 | 青岛齐星铁塔有限公司 | Blanking machining technique for welding platform angle iron frame |
| CN107700355B (en) * | 2017-07-21 | 2019-05-07 | 南通振华重型装备制造有限公司 | A kind of bridge steel form bed die manufacture craft |
| CN110369955A (en) * | 2019-07-24 | 2019-10-25 | 重庆交通建设(集团)有限责任公司 | Steel-structure box girder optimizes manufacturing process |
| CN114227999A (en) * | 2021-12-29 | 2022-03-25 | 郭林华 | Manufacturing method of blow mold of household massage chair |
| CN115255823B (en) * | 2022-07-27 | 2024-05-03 | 中铁二十五局集团第二工程有限公司 | Manufacturing process of steel beam roof plate unit |
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Denomination of invention: Manufacturing method of pier column template Effective date of registration: 20190222 Granted publication date: 20150729 Pledgee: The Bank of Hangzhou Limited by Share Ltd Hefei Baohe branch Pledgor: Hefei Wanzhong Traffic Engineering Co., Ltd. Registration number: 2019340000109 |
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Date of cancellation: 20220418 Granted publication date: 20150729 Pledgee: The Bank of Hangzhou Limited by Share Ltd. Hefei Baohe branch Pledgor: HEFEI WANZHONG TRAFFIC ENGINEERING Co.,Ltd. Registration number: 2019340000109 |