||Concrete filled steel tube (CFST) columns are a structural system with
excellent characteristics structurally and economically as compared to other
types of columns such as reinforced concrete columns and steel columns.
Using CFST, can save some material costs and construction time that
eventually result in reduction in overall construction costs as high as 24% and
10% compared to steel columns and reinforced concrete columns
respectively. Commonly the joint connection between steel beams to steel
hollow section column uses either welding or bolting system. However both
methods are not sutable for thin walled steel tubes. Therefore a new method
of connecting steel beam to CFST using T-stub end plate with Hollo-bolt is
developed. This connection method is develop on single beam connected to
the column face with different type of connections such as beam directly
welded to column face, using extended end-plate and also T-stub end plate
connected with Lindapter Hollo-bolts to column face. The performance of the
beam-column connection using both extended end plate and T-stub end-plate
proven to have a good strength capacity as compared to the beam welded
directly to the column face. The strength capacity recorded in extended end
plate connection in terms of its shear strength and moment-rotation capacity
is prominent. Extended plate with hollo-bolt beam-CFST column connection
shows a promising performance to be used for thin-walled CFST columns.
This product also has a great potential to be commercialized, where both
feasible connections product and the thin walled CFST column can be
produced as an IBS component.