耐震壁

[2082] SEISMIC BEHAVIOR OF DRIFT-HARDENING PRECAST CONCRETE WALLS REINFORCED WITH SBPDN REBARS

CHE Jiayu¹, ZHANG Chi¹, TAKEUCHI Takashi¹, SUN Yuping¹ (1.神戸大学)

キーワード：precast concrete wall、shear span ratio、axial load ratio、embedment length、SBPDN bar

Four precast concrete walls whose edge zones were reinforced with ultra-high strength SBPDN bars were fabricated and tested under cyclic lateral loading and constant axial compression to investigate seismic behavior of the precast concrete walls and to clarify the necessary embedment length of the SBPDN bars into the foundation beams. The test results have indicated that embedment length of twenty times of SBPDN diameter could ensure the precast walls sufficient drift-hardening capability up to at least 2.0% drift ratio, and that the larger the shear span ratio, the larger the peak drift ratio.