Manufacture and transportation technology for double-joint integrally-welded trusses
A dual-node, control technology, applied in manufacturing tools, welding equipment, construction, etc., can solve the problems of sporadic operations in high-altitude operations, which is not conducive to ensuring the safety of bridges, so as to reduce the difficulty of construction site operations, shorten the erection period of construction sites, reduce human effect
Pending Publication Date: 2016-07-20
CHINA RAILWAY JIUJIANG BRIDGE ENG +1
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[0003] The characteristics of traditional steel truss bridge manufacturing are: the construction technology of single-piece manufacturing in the factory and on-site installation root by root. The disadvantages of this technology are: high-altitude operations, on-site operations, water operations, and sporadic operations, which are not conducive to ensuring the safety of bridge construction and controlling bridges. Improve the construction quality and improve the construction speed of the bridge
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[0021] A double-node overall welded girder manufacturing and transfer technology, including dimensional accuracy control technology for 30m-long rods and integral welded girders, girders with straight instead of curved matching assembly technology, large overweight girder turning and transfer technology, girder Chip three-dimensional shipping technology;
[0022] 1) The dimensional accuracy control technology of 30m long rods and integrally welded girders, the dimensional accuracy control technology of 30m long rods and integrally welded girders adopts software entity modeling, simulates welding, and understands the welding deformation trend of steel girders. Deformation, reserve welding shrinkage allowance, optimize welding parameters, standardize the welding sequence to control the dimensional accuracy of 30m long rods, and ensure the forming size of girders through "2+1" matching assembly technology, that is, the first girder is the mother girder 1. Based on mother beam 1, ...
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The invention discloses a manufacture and transportation technology for double-joint integrally-welded trusses. The manufacture and transportation technology comprises a 30 m long rod and integrally-welded truss size dimension control technology, a truss replacing-curve-by-straight-line matching and splicing technology, a large superheavy truss overturning and transporting technology and a truss three-dimensional shipping and delivering technology. The manufacture and transportation technology for the double-joint integrally-welded trusses is characterized in that a replacing-curve-by-straight-line splicing scheme is adopted for match and manufacture of truss matching and splicing, and welding parameters are optimized on a basis of software simulation welding; a welding sequence is detailed; overturning hoops, lifting appliances and a transportation support for the trusses are designed according to the structure characteristics of the trusses; and a shipping fastening scheme is designed. By adopting the manufacture and transportation technology, difficulty and cost of truss matching and splicing manufacture are lowered; deformation of the trusses in splicing and welding processes is well controlled; deformation of the trusses during hoisting, transporting and conveying processes is reduced; and a complete manufacture and transportation technology for the double-joint integrally-welded trusses is formed.
Description
technical field [0001] The invention relates to a manufacturing and transfer technology of a double-node integrally welded girder. Background technique [0002] my country has a vast territory and diverse landforms. The construction of transportation infrastructure such as roads and railways needs to cross many terrains such as rivers, mountains, and canyons. With the country's investment in large-scale infrastructure construction and the gradual maturity of bridge steel structure technology, more and more steel structures have been adopted for cross-river and sea-cross bridges involved in the construction of domestic cross-regional highways and railways. Long-span road-rail dual-purpose steel truss girder cable-stayed bridges will be built more and more. [0003] The characteristics of traditional steel truss bridge manufacturing are: the construction technology of single-piece manufacturing in the factory and on-site installation root by root. The disadvantages of this te...
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Login to view more IPC IPC(8): B23K31/02E01D21/00E01D101/30
CPCB23K31/02E01D21/00E01D2101/30
Inventor 万纯兰高波陈兵山黄运新夏卫军王磊闫冬侠费元佑
Owner CHINA RAILWAY JIUJIANG BRIDGE ENG
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