Experimental Study on Performance of Steel and Composite Plate Combined Column

Abstract

Four I-section specimens have been produced, and epoxy resin structural adhesive and bolts have been used to combine the cold-formed thin-walled C steel with bamboo-wood composite plate, through which the cooperative work performance of the combined column was detected, and the failure mode and mechanism were explored. The feature of load vs. deflection and load vs. strain was also analyzed. Then stiffness and calculation formula of bearing capacity were proposed. The results show that the unitary mechanical behavior and plastic properties are very good, and the combined column is divided into three stages from loading to failure, including adhesive cracking, local area degumming and failure. And the stiffness accords with double slash model in serviceability

Evaluating the ultimate bearing capacity of glued laminated bamboo hollow columns under eccentric compression

“…The elastoplastic deformation in the bending direction is more obvious than that of the solid column, which is caused by the discontinuities in crosssections. During the eccentric loading process, the local degumming and cracking failures will occur at the glued connections of the plates (Wang et al 2019;Liu et al 2020), the buckling deformation of the plywood on the compressive side will occur (Wu et al 2014), and even the external drum phenomenon will occur (Zhao et al 2017), which will significantly reduce its ultimate bearing capacity. Therefore, it is necessary to propose a calculation method to evaluate the ultimate bearing capacity.…”