CN106078114A - A kind of large span main truss, floorings integration manufacture and secondary purlin borehole accuracy controls technology - Google Patents

A kind of large span main truss, floorings integration manufacture and secondary purlin borehole accuracy controls technology Download PDF

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Publication number
CN106078114A
CN106078114A CN201610576481.XA CN201610576481A CN106078114A CN 106078114 A CN106078114 A CN 106078114A CN 201610576481 A CN201610576481 A CN 201610576481A CN 106078114 A CN106078114 A CN 106078114A
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CN
China
Prior art keywords
web
main rod
welding
main
limit longeron
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610576481.XA
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Chinese (zh)
Inventor
徐慰玉
徐玉强
黄勇
闫冬侠
马得利
韦文俊
张燕
王秋萍
李敏
葛星
郭红艳
胡益华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Science and Industry Group Co Ltd
China Railway Jiujiang Bridge Engineering Co Ltd
Original Assignee
China Railway Science and Industry Group Co Ltd
China Railway Jiujiang Bridge Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway Science and Industry Group Co Ltd, China Railway Jiujiang Bridge Engineering Co Ltd filed Critical China Railway Science and Industry Group Co Ltd
Priority to CN201610576481.XA priority Critical patent/CN106078114A/en
Publication of CN106078114A publication Critical patent/CN106078114A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/12Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125Grating or flooring for bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/14Towers; Anchors ; Connection of cables to bridge parts; Saddle supports

Abstract

A kind of large span main truss, floorings integration manufacture and secondary purlin borehole accuracy controls technology, be included in tall and big web and the welding operation insufficient space of top board main weld, fusion length longer in the case of, solve to realize the submerged arc welding technology of main weld by setting up ship type jig;During main rod manufacture integrated with limit longeron, main rod web hole group is the most lateral opening away from controlling technology;Main rod manufacture integrated with limit longeron overall dimensions controls technology;Limit longeron steel anchor box mounting technique;Top-bottom chord, web member, limit longeron, steel anchor box triangle examination spelling technology;Secondary boom part controls technology with node plate hole group's matching precision.Achieve main chord top board and web member submerged arc welding in the case of the deficiency of working place, improve welding efficiency, it is ensured that welding quality;By the most lateral opening being controlled away from tolerance to main chord web hole group during integration manufacture, and hole group's matching precision of secondary boom part and adapter plate controls, it is ensured that the drilling precision of rod member, improves the efficiency of erected on site.

Description

A kind of large span main truss, floorings integration manufacture and secondary purlin borehole accuracy controls Technology
Technical field
The present invention relates to a kind of large span main truss, floorings integration manufactures and secondary purlin borehole accuracy control technology.
Background technology
Along with process and the expansion of urban capacity of domestic city modernization, the input of country's large-scale basis Facilities Construction And bridge steel structure technology is progressively ripe, involved by domestic trans-regional highway, railway construction across river, bridge spanning the sea, open Begin more and more to use steel construction.The construction of China's Large Span Bridges enters a brilliant period nearly ten years, occurs The Large Span Bridges that large quantities of novel structures, technical sophistication, difficulty of design and construction are big and high in technological content, have exist World's bridge construction account for critically important status.
Large span main truss, floorings integration manufacturing technology, it is therefore intended that by the research manufacturing engineering method, it is achieved overall Node main truss rod member manufactures with the overall of orthotropic steel bridge deck." main truss rod member is separately fabricated with floorings, overall in main employing Total spell " scheme.
Compared with entirety manufacture, use the method that main truss rod member and floorings are the most prefabricated, due to single member number of parts Few, manufacturing schedule is short, decreases the waiting time made in one piece, substantially reduces the manufacturing cycle of rod member, accelerates rod member Turnaround speed, is more beneficial for the control of overall duration;Additionally, due to the most prefabricated, single member overall dimensions is little, lightweight, favorably In rod member standing up in the fabrication process, rod member can be made to obtain more preferable welding post, be more beneficial for rod member weldquality Control.
The research of secondary purlin drilling Accuracy Control, is in the case of some complicated conditions, in order to meet drilling precision Requirement, the method spelled by solid examination of employing is carried out drilling, thus ensures the technology of drilling required precision.This technology energy Enough hole fabrication techniques more effectively ensureing rod member, but owing to using the drilling during three-dimensional examination is spelled, the drilling cycle is long, Costly.The method is applicable to the occasion that situation is complicated, required precision is high.
Summary of the invention
Its purpose of the present invention is that a kind of large span main truss of offer, floorings integration manufacture and secondary purlin borehole accuracy control Technology processed, it is achieved that main chord top board and web member submerged arc welding in the case of the deficiency of working place, improves welding efficiency, protects Demonstrate,prove welding quality;By the most lateral opening being controlled away from tolerance to main chord web hole group during integration manufacture, and Secondary boom part controls with hole group's matching precision of adapter plate, it is ensured that the drilling precision of rod member, improves the efficiency of erected on site.
The technical scheme realizing above-mentioned purpose and take, including:
1) integral node main rod is integrated with Steel Bridge Deck limit longeron manufactures
1. the manufacture of integral node main rod
A, top board, web are unary prefabricated;
B, the spelling welding of main rod and postwelding inspection;
C, the drilling of web node side opening group, the drilling in hole, location, not a node side;
The assembly of all kinds of adapter plates, welding on d, main rod;
2. the manufacture of limit longeron
A, web, crossbeam or cross rib, top plate unit part prefabricated;
B, the spelling welding of limit longeron and postwelding inspection;
3. limit longeron is spelled with the overall total of main rod, it is achieved integration manufactures
A, the welding of all kinds of weld seam;
B, the position do not holed carry out drilling;
Described integral node main rod includes with Steel Bridge Deck limit longeron integrated manufacturing technology major control point:
I. during main rod assembly, the main weld of tall and big web and top board in the case of working place is narrow and small by setting up ship Type jig, it is achieved tall and big web welds with the main weld of top board;
II. during main rod and the totally assembly of limit longeron, the most lateral opening control away from tolerance of main rod web hole group
System, the method mainly taked is: after main rod manufacture completes, and main rod node side opening group first hole, and not a node sidetracking is fixed Hole, position, manufactures for later stage coupling, and main rod and limit longeron complete the remaining hole group's drilling of not a node side after always having spelled;
III. integration has manufactured the control of rear rod member overall dimensions, and main rod manufacture integrated with limit longeron is winded up after completing Bar;
2) manufacture of steel anchor box
A, when limit longitudinal-beam web plate unit piece manufactures, welding is arranged on the steel anchor box on web;
B, when limit longeron top plate unit part makes, the assembled bridge floor connecting plate welded with top board;
C, when limit longeron and main rod are always spelled, complete the residue weld seam welding of steel anchor box, and anchor tube be installed;
Steel anchor box manufacturing technology control point on the longeron of limit includes: the assembled order of each plate;The welding quality control of melt-through weld System;The Angle ambiguity of steel anchor box;
1) secondary purlin drilling precision controlling
1. assembly is winded up main rod, web member, lower boom;
1. wind up main rod, web member, lower boom examination spell line style inspection with adjust;
2. assembled limit longeron;
3. assembled secondary boom part;
4. secondary boom part triangle line type control, carries out DATA REASONING, Conversion of Spatial Data is become panel data;
5. the drilling of secondary boom part;
Secondary purlin drilling Accuracy Control control point includes: top-bottom chord, web member plane assembly Linear Control;During assembled limit longeron Safety prevention measure;During assembled secondary purlin, the control of triangle line style and the data in space carry out the switch technology of panel data;Secondary The control technology of purlin drilling precision.
Beneficial effect
Compared with prior art the present invention has the following advantages.
In main truss, floorings, anchor case integrated rod member spelling solder technology research process, manufacture work with split type rod member Technology, each position is separately manufactured, progressively controls the accuracy of manufacture at each position, is finally completed total spelling of overall rod member, it is achieved one The required precision of body rod member, this scheme shortens the manufacturing schedule of rod member, has saved work, improves the work of workman Efficiency.During main rod manufacture integrated with limit longeron, the design welded by ship type, effectively solve tall and big web The problem narrow and small with top board working place, instead of CO2 gas shielded arc welding with submerged arc welding, it is ensured that welding quality, outside weld seam See beautiful appearance, improve welding efficiency simultaneously, saved manufacturing cost.
During anchor case with the penetration weld quality of rod member and the control technical study of overall precision, weld for steel anchor box Position, working place, compared with problem little, that welding capacity is big, required precision is high, uses backstep welding, presets anti-deformation, differentiation manufacture process Ensure weldquality and the profile control accuracy of steel anchor box penetration weld etc. method, greatly reduce the amount of doing over again of Weld Seam Repairation, joint About manufacturing cost.
During secondary boom part with joint plate hole group's class fit precision controlling, use the control skill of spatial hole group's precision Art, uses the mode that first hole method, metapore method combine, progressively control hole group precision.After integration rod member shapes, use large-scale sky Between boring jig carry out metapore, finally guarantee integration rod member overall hole group's precision.The successful Application of this technique, it is ensured that bar The workmanship of part, it is achieved that the real construction target joined of none block splice plate, it is ensured that girder steel is smoothed out, linear is accurate to Position.
Improved by manufacturing process innovation, improve company's girder steel construction level, it is ensured that the overall workmanship of girder steel, Also add new content for steel truss girder manufacturing technology simultaneously, promote the manufacturing development of steel truss girder.
Accompanying drawing explanation
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is ship type welding positioner schematic diagram in the present invention;
Fig. 2 is that in the present invention, main rod always spells front drilling schematic diagram;
Fig. 3 is that in the present invention, integration has manufactured rear top boom schematic diagram;
Fig. 4 is assembled steel anchor box schematic diagram on median ventral plate unit of the present invention;
Fig. 5 is that in the present invention, secondary boom part mates drilling schematic diagram with longeron pair purlin, cable-stayed bridge limit adapter plate.
Detailed description of the invention
A kind of large span main truss, floorings integration manufacture and secondary purlin borehole accuracy controls technology, including:
1) integral node main rod is integrated with Steel Bridge Deck limit longeron manufactures
1. the manufacture of integral node main rod
A, top board, web are unary prefabricated;
B, the spelling welding of main rod and postwelding inspection;
C, the drilling of web node side opening group, the drilling in hole, location, not a node side;
The assembly of all kinds of adapter plates, welding on d, main rod;
2. the manufacture of limit longeron
A, web, crossbeam or cross rib, top plate unit part prefabricated;
B, the spelling welding of limit longeron and postwelding inspection;
3. limit longeron is spelled with the overall total of main rod, it is achieved integration manufactures
A, the welding of all kinds of weld seam;
B, the position do not holed carry out drilling;
Described integral node main rod includes with Steel Bridge Deck limit longeron integrated manufacturing technology major control point:
I. during main rod assembly, the main weld of tall and big web and top board in the case of working place is narrow and small by setting up ship Type jig, it is achieved tall and big web welds with the main weld of top board;
II. during main rod and the totally assembly of limit longeron, the most lateral opening control away from tolerance of main rod web hole group
System, the method mainly taked is: after main rod manufacture completes, and main rod node side opening group first hole, and not a node sidetracking is fixed Hole, position, manufactures for later stage coupling, and main rod and limit longeron complete the remaining hole group's drilling of not a node side after always having spelled;
III. integration has manufactured the control of rear rod member overall dimensions, and main rod manufacture integrated with limit longeron is winded up after completing Bar;
2) manufacture of steel anchor box
A, when limit longitudinal-beam web plate unit piece manufactures, welding is arranged on the steel anchor box on web;
B, when limit longeron top plate unit part makes, the assembled bridge floor connecting plate welded with top board;
C, when limit longeron and main rod are always spelled, complete the residue weld seam welding of steel anchor box, and anchor tube be installed;
Steel anchor box manufacturing technology control point on the longeron of limit includes: the assembled order of each plate;The welding quality control of melt-through weld System;The Angle ambiguity of steel anchor box;
2) secondary purlin drilling precision controlling
1. assembly is winded up main rod, web member, lower boom;
2. wind up main rod, web member, lower boom examination spell line style inspection with adjust;
3. assembled limit longeron;
4. assembled secondary boom part;
5. secondary boom part triangle line type control, carries out DATA REASONING, Conversion of Spatial Data is become panel data;
6. the drilling of secondary boom part;
Secondary purlin drilling Accuracy Control control point includes: top-bottom chord, web member plane assembly Linear Control;During assembled limit longeron Safety prevention measure;During assembled secondary purlin, the control of triangle line style and the data in space carry out the switch technology of panel data;Secondary The control technology of purlin drilling precision.
Large span main truss, floorings its major control point of integration manufacturing process are determining by engineering method
The overall fabrication scheme of rod member, it is achieved the control of the overall dimensions of rod member, guarantee overall hole group's drilling precision of rod member, solution Certainly tall and big web and the top board main weld Welding Problems when working place deficiency.
Secondary purlin borehole accuracy controls its hole group's matching precision being mainly characterized by realizing secondary purlin and adapter plate of technology and controls, real The installation accuracy control technology of existing steel anchor box
1) in the case of tall and big web and the welding operation insufficient space of top board main weld, fusion length are longer, if pressed More solito way uses prosposition welding, is just difficult to carry out submerged arc welding;In order to ensure the welding quality of weld seam, improve welding effect Rate, can solve the welding operation of tall and big web and top board main weld by setting up ship type jig, optimizing welding equipment The problem realizing submerged arc welding during insufficient space.
2) main rod with the overall fabrication scheme of limit longeron is: main rod is the most prefabricated with limit longeron, then carries out mobile jib Part and the integral solder of limit longeron.In the fabrication process due between main rod and limit longeron by being welded to connect, need to ensure On main rod web Kong Qun the most lateral opening away from tolerance in allowed band.
3) limit longeron steel anchor box positional structure is complicated, connects steel anchor box, correspondence pair purlin, inner side node outside the longitudinal-beam web plate of limit Plate;Steel anchor box be welded with a lot of intensive melt-through weld, welding is shunk can affect the Kong Qunjing of secondary purlin, inner side gusset plate with deformation Degree.By the welding sequence of each plate of rational and the opportunity of welding, the manufacture of steel anchor box is decomposed, thus simplifies anchor case Manufacture difficulty.
4) secondary purlin uses plug-in type with upper lower edge adapter plate and is connected.Owing to winding up, secondary purlin adapter plate positional structure is multiple Miscellaneous, for using the adapter plate of first hole method to use " examination of main truss triangle solid is spelled, high-altitude mate one to one drill hole " technology to realize Adapter plate and the matching precision of secondary boom piece bores group.
Manufacturing step and manufacturing process
(1) integral node main rod includes with the integrated manufacturing step of Steel Bridge Deck limit longeron:
1. the manufacture of integral node main rod
A, top board, web are unary prefabricated;
B, the spelling welding of main rod and postwelding inspection;
C, the drilling of web node side opening group, the drilling in hole, location, not a node side;
The assembly of all kinds of adapter plates, welding on d, main rod.
2. the manufacture of limit longeron
A, web, crossbeam (cross rib), top plate unit part prefabricated;
B, the spelling welding of limit longeron and postwelding inspection;
3. limit longeron is spelled with the overall total of main rod, it is achieved integration manufactures
A, the welding of all kinds of weld seam;
B, the position do not holed carry out drilling.
Integral node main rod includes with Steel Bridge Deck limit longeron integrated manufacturing technology major control point: main rod assembly Cheng Zhong, the main weld of tall and big web and top board in the case of working place is narrow and small by setting up ship type jig, it is achieved high Big web welds with the main weld of top board;During main rod and the totally assembly of limit longeron, main rod web hole group the most lateral opening away from The control of tolerance;Integration has manufactured the control of rear rod member overall dimensions.
(2) manufacturing step of steel anchor box includes:
A, when limit longitudinal-beam web plate unit piece manufactures, welding is arranged on the steel anchor box on web
B, when limit longeron top plate unit part makes, the assembled bridge floor connecting plate welded with top board
C, when limit longeron and main rod are always spelled, complete the residue weld seam welding of steel anchor box, and anchor tube be installed.
Steel anchor box manufacturing technology major control point on the longeron of limit includes: the assembled order of each plate;The weldering of melt-through weld Connect quality control;The Angle ambiguity of steel anchor box.
(3) step of secondary purlin drilling precision controlling includes:
1. assembly is winded up main rod, web member, lower boom
2. wind up main rod, web member, lower boom examination spell line style inspection with adjust
3. assembled limit longeron
4. assembled secondary boom part
5. secondary boom part triangle line type control, carries out DATA REASONING, Conversion of Spatial Data is become panel data
6. the drilling of secondary boom part
Secondary purlin drilling Accuracy Control major control point includes: top-bottom chord, web member plane assembly Linear Control;Assembled limit is indulged Safety prevention measure during beam;During assembled secondary purlin, the control of triangle line style and the data in space carry out the conversion skill of panel data Art;The control technology of secondary purlin drilling precision.
Embodiment
1) integral node main rod includes with the integrated manufacturing step of Steel Bridge Deck limit longeron:
1. the manufacture of integral node main rod
A, top board, web are unary prefabricated;
B, the spelling welding of main rod and postwelding inspection;
C, the drilling of web node side opening group, the drilling in hole, location, not a node side;
The assembly of all kinds of adapter plates, welding on d, main rod.
2. the manufacture of limit longeron
A, web, crossbeam (cross rib), top plate unit part prefabricated;
B, the spelling welding of limit longeron and postwelding inspection;
3. limit longeron is spelled with the overall total of main rod, it is achieved integration manufactures
A, the welding of all kinds of weld seam;
B, the position do not holed carry out drilling.
Integral node main rod includes with Steel Bridge Deck limit longeron integrated manufacturing technology major control point:
I. during main rod assembly, the main weld of tall and big web and top board in the case of working place is narrow and small by setting up ship Type jig, it is achieved tall and big web welds with the main weld of top board.As it is shown in figure 1, be ship type welding positioner, this moulding bed can be used In the welding simultaneously of two rod members, wherein in Fig. 1 1. by the moulding bed set up, be 2. submerged arc welding machine work platforms, 3. represent steel The position that beam is placed.
II. during main rod and the totally assembly of limit longeron, the most lateral opening control away from tolerance of main rod web hole group
System.The method mainly taked is: after main rod manufacture completes, and main rod node side opening group first hole, and not a node sidetracking is fixed Hole, position (manufactures for later stage coupling), as shown in Figure 2;Main rod and limit longeron complete not a node side remaining hole group after always having spelled Drilling.
III. integration has manufactured the control of rear rod member overall dimensions, as it is shown on figure 3, be main rod and limit longeron one Change top boom after manufacture completes.
2) manufacturing step of steel anchor box includes:
A, when limit longitudinal-beam web plate unit piece manufactures, welding is arranged on the steel anchor box on web, as shown in Figure 4.
B, when limit longeron top plate unit part makes, the assembled bridge floor connecting plate welded with top board
C, when limit longeron and main rod are always spelled, complete the residue weld seam welding of steel anchor box, and anchor tube be installed.
Steel anchor box manufacturing technology major control point on the longeron of limit includes: the assembled order of each plate;The weldering of melt-through weld Connect quality control;The Angle ambiguity of steel anchor box.
3) step of secondary purlin drilling precision controlling includes:
1. assembly is winded up main rod, web member, lower boom.
2. wind up main rod, web member, lower boom examination spell line style inspection with adjust.
3. assembled limit longeron.
4. assembled secondary boom part.
5. secondary boom part triangle line type control, carries out DATA REASONING, Conversion of Spatial Data is become panel data.
6. the drilling of secondary boom part.Such as Fig. 5
Secondary purlin drilling Accuracy Control major control point includes: top-bottom chord, web member plane assembly Linear Control;Assembled limit is indulged Safety prevention measure during beam;During assembled secondary purlin, the control of triangle line style and the data in space carry out the conversion skill of panel data Art;The control technology of secondary purlin drilling precision.

Claims (1)

1. a large span main truss, floorings integration manufacture and secondary purlin borehole accuracy control technology, it is characterised in that including:
1) integral node main rod is integrated with Steel Bridge Deck limit longeron manufactures
1. the manufacture of integral node main rod
A, top board, web are unary prefabricated;
B, the spelling welding of main rod and postwelding inspection;
C, the drilling of web node side opening group, the drilling in hole, location, not a node side;
The assembly of all kinds of adapter plates, welding on d, main rod;
2. the manufacture of limit longeron
A, web, crossbeam or cross rib, top plate unit part prefabricated;
B, the spelling welding of limit longeron and postwelding inspection;
3. limit longeron is spelled with the overall total of main rod, it is achieved integration manufactures
A, the welding of all kinds of weld seam;
B, the position do not holed carry out drilling;
Described integral node main rod includes with Steel Bridge Deck limit longeron integrated manufacturing technology major control point:
I. during main rod assembly, the main weld of tall and big web and top board in the case of working place is narrow and small by setting up ship Type jig, it is achieved tall and big web welds with the main weld of top board;
II. during main rod and the totally assembly of limit longeron, the most lateral opening control away from tolerance of main rod web hole group
System, the method mainly taked is: after main rod manufacture completes, and main rod node side opening group first hole, and not a node sidetracking is fixed Hole, position, manufactures for later stage coupling, and main rod and limit longeron complete the remaining hole group's drilling of not a node side after always having spelled;
III. integration has manufactured the control of rear rod member overall dimensions, and main rod manufacture integrated with limit longeron is winded up after completing Bar;
2) manufacture of steel anchor box
A, when limit longitudinal-beam web plate unit piece manufactures, welding is arranged on the steel anchor box on web;
B, when limit longeron top plate unit part makes, the assembled bridge floor connecting plate welded with top board;
C, when limit longeron and main rod are always spelled, complete the residue weld seam welding of steel anchor box, and anchor tube be installed;
Steel anchor box manufacturing technology control point on the longeron of limit includes: the assembled order of each plate;The welding quality control of melt-through weld System;The Angle ambiguity of steel anchor box;
Secondary purlin drilling precision controlling
Assembly is winded up main rod, web member, lower boom;
Wind up main rod, web member, lower boom examination spell line style inspection with adjust;
Assembled limit longeron;
Assembled secondary boom part;
Secondary boom part triangle line type control, carries out DATA REASONING, Conversion of Spatial Data is become panel data;
The drilling of secondary boom part;
Secondary purlin drilling Accuracy Control control point includes: top-bottom chord, web member plane assembly Linear Control;During assembled limit longeron Safety prevention measure;During assembled secondary purlin, the control of triangle line style and the data in space carry out the switch technology of panel data;Secondary The control technology of purlin drilling precision.
CN201610576481.XA 2016-07-21 2016-07-21 A kind of large span main truss, floorings integration manufacture and secondary purlin borehole accuracy controls technology Pending CN106078114A (en)

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Application Number Priority Date Filing Date Title
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CN111730287A (en) * 2020-05-08 2020-10-02 江苏中铁山桥重工有限公司 Manufacturing method of multi-surface core node chord member

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秦镇等: "粉房湾长江大桥钢桁梁边纵梁制造技术", 《桥梁建设》 *
赵世运等: "芜湖长江大桥正桥钢梁制造及架设技术", 《中国铁道科学》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111058385A (en) * 2020-01-13 2020-04-24 中铁九桥工程有限公司 Auxiliary girder trial splicing method for double-layer steel structure bridge
CN111730287A (en) * 2020-05-08 2020-10-02 江苏中铁山桥重工有限公司 Manufacturing method of multi-surface core node chord member

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