Study on seismic reduction design based on yield mechanism
Energy-dissipated design can adjust the yield mechanism and improve the seismic performance of structures.The seismic reduction design scheme is the key to seismic reduction design of structures.It's necessary to study the yield mechanism and thus determine the seismic reduction design scheme of structures.The inpatient building structure of a hospital in Hebei Province was taken as an example.By using the nonlinear static pushover method,the yield sequence of members in the structures was analyzed,and the yield mechanism and weak links were determined.The seismic reduction design scheme was determined.The seismic performance of the damping structure and the non-damping structure were compared and analyzed.The results show that the seismic reduction design method based on the yield mechanism can quickly determine the installation position of the energy dissipation devices,so that the yield mechanism of the structure is consistent with expectations.Combined with displacement-based design method,the performance parameters of the damper can be determined by taking storey drift angle as a control target.