CN204455789U - A kind of combination joist steel girder be made up of large-scale combined steel girder whole hole moulding bed - Google Patents

A kind of combination joist steel girder be made up of large-scale combined steel girder whole hole moulding bed Download PDF

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Publication number
CN204455789U
CN204455789U CN201420635159.6U CN201420635159U CN204455789U CN 204455789 U CN204455789 U CN 204455789U CN 201420635159 U CN201420635159 U CN 201420635159U CN 204455789 U CN204455789 U CN 204455789U
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China
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steel
girder
steel girder
moulding bed
whole hole
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CN201420635159.6U
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Inventor
李军平
刘治国
成宇海
车平
吴小兵
王志翔
路玉荣
权红烈
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China Railway Baoji Bridge Group Co Ltd
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China Railway Baoji Bridge Group Co Ltd
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Abstract

The utility model relates to a kind of combination joist steel girder be made up of large-scale combined steel girder whole hole moulding bed, because Large Steel girder makes, required precision is high, alignment control difficulty is large, steel girder assembling technique was difficult to meet making required precision in the past, and input cost is larger.To this, develop Large Steel girder whole hole manufacturing technology, namely on assembled moulding bed according to the scheme of " Slab element → segmentation girder steel → large sections girder steel ", Large Steel girder once completes by assembled moulding bed.Advantage: one is the limitation breaching traditional girder steel manufacturing technology, and adopt by the method that girder steel successively assembly welding is Large Steel girder on assembled moulding bed, the method is scientific and reasonable, effectively can improve the making quality of girder steel, and can reduce potential safety hazard; Two is that Large Steel girder once completes on assembled moulding bed, avoids steel girder and manufactures the adjustment of linear secondary, is conducive to controlling the manufacture of steel girder linear and make precision.

Description

A kind of combination joist steel girder be made up of large-scale combined steel girder whole hole moulding bed
Technical field
The utility model relates to a kind of for large-scale combined joist steel girder, belongs to large bridge steel structural unit processing and manufacturing field.
Background technology
Along with the progress of transport science and techonologies, bridge construction is constantly towards " maximization, assemblingization " development, the length of every hole combination joist steel girder can reach more than 85m, and steel girder is hatch frame, its geometric accuracy, large sections alignment control difficulty are large, need the processing and fabricating method of the new combination joist steel girder of exploitation badly.Combined the preparation method that joist steel girder all adopts " Slab element → little sections girder steel → large sections girder steel " in the past.During the method implementation process, little sections girder steel and the assembled moulding bed of large sections girder steel two class need be made by the making Alignment Design of Large Steel girder, large-scale flat wagon for moving beam need be utilized to carry out transporting in field to little sections girder steel, purchase simultaneously and overlap hydraulic jacking equipment more, carry out secondary adjustment to the manufacture of large sections girder steel is linear, alignment control difficulty increases, cost of manufacture increases greatly, claim for eot to cause girder steel to make.
Utility model content
The object of design: avoid the weak point in background technology, designs the whole hole of a kind of Large Steel girder and makes, with control girder steel the accuracy of manufacture, manufacture linear, save manufacturing cost simultaneously.
Design scheme: in order to realize purpose of design, first the assembled moulding bed of steel girder of band vertical curve is made, as the cover tire that steel girder is assembled, then by the scheme of Large Steel girder by " Slab element → segmentation girder steel → large sections girder steel ", assembled moulding bed once completes.
Technical scheme: a kind of combination joist steel girder be made up of large-scale combined steel girder whole hole moulding bed, two pieces of steel girder web plate unit and one piece of steel kingpost baseplate unit form trapezoidal channel-section steel girder frame, and polylith steel girder separator unit three limit is welded with trapezoidal channel-section steel girder frame inwall respectively.
The utility model is compared with background technology, one is the limitation breaching traditional girder steel manufacturing technology, and adopt by the method that girder steel successively assembly welding is Large Steel girder on assembled moulding bed, the method is scientific and reasonable, effectively can improve the making quality of girder steel, and can potential safety hazard be reduced; Two is that Large Steel girder once completes on assembled moulding bed, avoids steel girder and manufactures the adjustment of linear secondary, is conducive to controlling the manufacture of steel girder linear and make precision; Three are that of avoiding the operation of transporting in little sections girder steel field, do not need to purchase little sections girder steel transloading equipment, greatly reduce manufacturing cost, improve operating efficiency; Four is only need to arrange Large Steel girder place and assembled moulding bed, has saved production site; Five is Large Steel girder whole hole preparation methods, have make precision high, manufacture linear easy to control, have that operating efficiency is high, the feature of good economy performance simultaneously.
Accompanying drawing explanation
Fig. 1 is that the whole hole of Large Steel girder makes assembled moulding bed and girder steel whole structure figure.
Fig. 2 is that the whole hole of Large Steel girder makes concrete steps.
Detailed description of the invention
Embodiment 1: with reference to accompanying drawing 1.By steel beam column form a large-scale combined joist steel girder, two pieces of steel girder web plate unit 1-5 and piece of steel kingpost baseplate unit 1-4 form channel-section steel girder, and polylith steel girder separator unit 1-6 tri-welds with channel-section steel girder inwall on limit respectively, form steel girder.Many steel Main Girder Welding spreading, form large sections steel girder, the bottom board unit 1-4 of steel girder is vertical curve.
Fig. 1 is the overall schematic that combination joist steel girder makes, and 1-1 represents and always spells moulding bed, for controlling the appearance profile size of steel girder, 1-2 represents the vertically linear of moulding bed, for controlling the linear arch camber of steel girder, 1-3 represents longitudinal survey mark, for measuring the straightness accuracy of steel girder.
1-4 represents steel kingpost baseplate unit, and 1-5 represents steel girder web plate unit, and 1-6 represents steel girder separator unit; Fig. 2 is steel girder whole hole manufacturing process schematic diagram, and state 2-1 represents bottom board unit assembly welding process, and state 2-2a represents segmentation steel girder manufacturing process, and state 2-2b represents segmentation steel girder web plate unit jacking process, the large sections in the whole hole of state 2-3 steel girder.
With reference to accompanying drawing 2-1 to Fig. 2-3.In Fig. 2-1, state 1 is by the schematic diagram of bottom board unit assembly welding on assembled moulding bed, state 2-2a is the schematic diagram of web unit assembly welding, state 2-2b is web unit butt weld position jack-up schematic diagram, and state 2-3 is the schematic diagram that segmentation girder steel is welded as Large Steel girder.Large Steel girder whole hole preparation method is:
1st step: by CAD Simulation lofting, the manufacture calculating Large Steel girder is linear;
2nd step: design and produce linear consistent assembled moulding bed vertical with Large Steel girder, arranges elevation measuring point and longitudinal reference point at assembled moulding bed two ends simultaneously;
3rd step: by gantry crane by the lifting to assembled moulding bed of the bottom board unit of steel girder, with longitudinal reference point for foundation positioning plate unit;
4th step: by the bottom board unit of all steel girders welding spreading, then revise the vertical baseline on base plate;
5th step: revise the vertical baseline in bottom board unit, by the web unit in line assembling segmentation steel girder and diaphragm;
6th step: utilize Lifting Equipment by web unit butt weld position jack-up δ value, play reversible deformation effect.
7th step: web unit, diaphragm and stringer in welding segmentation girder steel, form the segmentation girder steel that base plate is connected.
8th step: adopt saddle weight and Lifting Equipment to adjust beam section linear, then welds the circumferential weld between segmentation girder steel, completes Large Steel girder and makes.
It is to be understood that: although above-described embodiment to be contrasted detailed text description to mentality of designing of the present utility model; but these text descriptions; just the simple text of the utility model mentality of designing is described; instead of the restriction to the utility model mentality of designing; any do not exceed the utility model mentality of designing combination, increase or amendment, all fall in protection domain of the present utility model.

Claims (4)

1. the combination joist steel girder be made up of large-scale combined steel girder whole hole moulding bed, it is characterized in that: two pieces of steel girder web plate unit (1-5) form trapezoidal channel-section steel girder frame with one piece of steel kingpost baseplate unit (1-4), and polylith steel girder separator unit (1-6) three limit is welded with trapezoidal channel-section steel girder frame inwall respectively.
2. the combination joist steel girder be made up of large-scale combined steel girder whole hole moulding bed according to claim 1, is characterized in that: the reinforcing rib on steel girder separator unit (1-6) face forms three triangle patterns.
3. the combination joist steel girder be made up of large-scale combined steel girder whole hole moulding bed according to claim 1, is characterized in that: polylith steel girder separator unit (1-6) upper end and steel Main Girder Welding.
4. the combination joist steel girder be made up of large-scale combined steel girder whole hole moulding bed according to claim 1, is characterized in that: steel kingpost baseplate unit (1-4) is in vertical curve.
CN201420635159.6U 2014-02-21 2014-02-21 A kind of combination joist steel girder be made up of large-scale combined steel girder whole hole moulding bed Active CN204455789U (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103911950B (en) * 2014-02-21 2016-09-07 中铁宝桥集团有限公司 A kind of large-scale combined joist steel girder whole hole preparation method

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