Post-failure behaviour of box section beams under pure bending (an experimental study)

摘要

The results of a program of experiments set up to explore the post-failure behaviour of box section beams subjected to pure bending are presented. Rectangular and trapezoidal cross- section beams were loaded up to and beyond collapse in a four-point bending configuration. Load-deflection graphs were recorded and the details of the observed plastic collapse mech- Anisms were noted. Experimental collapse curves are compared with those derived from theor- Etical models of plastic collapse mechanisms based upon rigid-plastic theory.