How does a multi-span analysis work using ring2.0?
? ring2.0 uses rigorous optimisation techniques to find the critical collapse load factor, which can be found when the yield, mechanism and equilibrium conditions of plastic analysis are all simultaneously satisfied. In other software, by balancing thrusts from adjacent spans, the user is basically attempting to carry out this process manually (the yield condition being deemed to be violated when the line of thrust lies outside the thickness of the pier).
