Welding requirements for stainless steel trusses.

Stainless steel truss refers to the truss made of steel roof structure crane beam, bridge and hydraulic gate of industrial and civil buildings, commonly used as the main bearing member stainless steel truss. The cross section centroid axis of each rod of stainless steel truss should meet at a point at the node, and the internal force calculation is generally carried out according to the articulated truss. When the truss is only subjected to joint load, all members are only subjected to axial tension or pressure. If the load is also carried in the bar intersections, the bar will be bent at the same time. Stainless steel truss rods are generally thin, so local bending moments should be avoided or reduced as far as possible when arranging joints. For the stainless steel truss with large section height to length ratio, the secondary stress caused by joint rigidity should be considered when necessary.

The reason why stainless steel truss is hinged is because its rod is slender, the stress caused by node rigidity is small, which is ignored. Welding is only the joint form of nodes, and rigid connection is not equivalent to the concept. Theoretically, the bearing capacity of rigid joints may be slightly higher than that of articulated joints

Stainless steel truss is usually used in Bridges and large-span gymnasium buildings, with unique shape and exquisite appearance. With the development of the construction industry, people's pursuit of beauty is higher and higher, most of the steel beams of the steel structure of the plant also use the stainless steel truss structure. Below, xiaobian for you to explain the technical requirements of stainless steel truss processing!

1.A large stainless steel truss processing generally as far as possible in the ground frame of a single truss assembly welding, and then hanging to the top of the column in place, and then welding the transverse bar between the trusses.

2, such as truss span and dead weight beyond the mechanical capacity of lifting, generally on the ground according to the weight of the segmented welding. Between each section of the equipment temporary bolt fixed joint, sectional assembly welding after the completion of the weld and the size of each part of the inspection, and then disassemble the temporary fixed bolt at the section, lift section by section to the installation position on the platform, welding the closing weld.

3. No matter on the ground or in the air, the middle joints shall be welded first, and then the joints at both ends of the truss shall be extended in accordance with the welding sequence to avoid dimension error between the joints and the frame, and welding shall not be applied at both ends of the same straight pipe.