Polygonal loop model for hysteretic behaviour of frame structures with recycled aggregate concrete

摘要: On the basis of shaking table tests on recycled aggregate concrete (RAC) precast frame structure subjected to excitations Wenchuan wave (WCW, 2008, N-S), El Centro (ELW, 1940, N-S) and Shanghai artificial (SHW), this study employed a new polygonal loop model (PLM) with its two core characteristics, that is, stiffness strength degradation describe hysteretic behaviour RAC frames. The implementation PLM underwent different stages such as backbone curve, pivot points unloading/reloading rules. validation by application one cast-in-place revealed hysteresis loops generated proposed not only traced trend but also fitted well tested curves. Given these findings, it may be concluded can used predict seismic structures.