“Computational Civil Engineering - "Intersections" International Journal

“Computational Civil Engineering 2005”, International Symposium 117recovery of the material properties during the change of the sign of the load isevaluated using a simple constitutive model with a single damage index. In Figure8 the top pier displacement is represented at the end of the load sequence 1 andthen, in the same figure, the deformed pier is drown at the end of the last loadsequence 3 In this last case the damaged cross section is localized near thefoundation of the pier, while the rest of cross-sections of the pier turns to the itsinitial un-damaged state (rotation of rigid solid around the kneecap (Figure 8).(a) 1 2(b) 1 2 33Figure 7. Load-displacement behavior in the pier for the load sequencies 1, 2 and 3. a)Experimental results [25] and numeric results [8]. b) Results obtained in the present workFigure 8. Displacement of the pier P6 at the end of the first load cycle and at the end of thelast load cycle