Research progress on innovative earthquake-resilient structural systems

In recent years,earthquake-resilient structure has become a research focus in the international earthquake engineering field.This paper presents the study and practice of the innovative earthquake-resilient structure systems keeping up with the international research trends.In the earthquake-resilient frame systems,the end constraints of column were released and the prestressed tendons provided the self-centering capability.An angle steelrubber connection with local rotation was developed and the shaking table test with the finite element simulation based on OpenSees was conducted to evaluate the resilience.In the earthquake-resilient shear wall systems,the shear walls with replaceable foots and the replaceable coupling beam were proposed.Cyclic loading tests and refined finite element analysis were conducted to investigate the seismic performance of earthquake-resilient shear wall systems.The design method was proposed and the replaceable coupling beams were applied in a high-rise building in Xian,China.It can be concluded from series research that earthquake-resilient structures with clear structural system,proper designed connections,collaboration of strength and damping will exhibit desirable resilience under earthquakes and present the broad prospect of real engineering projects.