TEST RESEARCH ON THE SEISMIC PERFORMANCE OF A NOVEL PREFABRICATED SHEAR WALL WITH CFST END COLUMNS

In seismic-prone regions, the seismic performance of prefabricated structural members, inclusive of concrete superposed shear walls, emerges as a cardinal concern in the realm of civil engineering. This research paper presents an innovative design concept for prefabricated shear walls, designated as Precast Concrete Superposed Shear Walls with CFST End Columns (PCSSWEC). Full-scale PCSSWEC specimens were designed, constructed, and subsequently subjected to pseudo-static cyclic loading test. The test investigation provided initial insights into their hysteretic behaviour, which demonstrated superior seismic performance in aspects such as failure mode, lateral load-bearing and deformation capacity, ductility, and energy dissipation capacity. In addition, a noteworthy observation was the persistent composite action between steel and concrete, which endured until the point of structural failure, contributing to the PCSSWEC specimen's enhanced performance compared to its RC shear wall counterpart.