Bridge box column specification and structure

The bridge box column is a composite column, which is assembled from steel plates. A steel pipe column is generally a steel structural column composed of one or more steel pipes; a bridge box column is a steel structural column composed of multiple section steels (square rectangular tubes, angle steels, channel steels, and I-beams).

The bridge box column can have a larger cross-section in one direction, which determines that it can be used in places with greater eccentric force. From the point of view of production, the production of box-shaped steel pipe columns is relatively more difficult than that of circular steel pipe columns due to the large amount of welding and easy deformation. Therefore, most bridge box columns use large-diameter thick-walled square rectangular tubes as box-shaped steel tube columns. The advantages are: direct forming, low material cost, good material performance, high strength, and easy installation.

Specific drawings will vary and change. Some are shaped like "#", with all four sides coming out, and some are like "口", and of course there are half-sealed ones. Therefore, there must be drawings for the processing of bridge box columns, and some ribs must be added to the columns. Some people use large square tubes instead of box columns. However, the production capacity is limited, and the thickness often does not meet the requirements. Most of the bridge box columns are submerged arc welding, and one of the three seams needs to be specially welded, which is more difficult. General domestic steel structure factories can do it, but each has different quotations.

Bridge box column