Static Loading Test of Precast CES Shear Walls with Different Shear Span Ratios

In this study, static loading tests were conducted on concrete encased steel (CES) shear walls. One experimental variable was the construction method, using precast and integral construction specimens. Another variable was the shear span ratio, in which specimens were designed to fail either in shear or in flexure. This paper describes the test and investigates the failure mode, ultimate strength, and restoring force characteristics. Results showed that the maximum shear force resistances of precast walls were smaller than that of integral construction walls. Precast shear walls showed slip at the boundary of the wall panel and CES frame at a small level of drift angle, implying that the slip deformation affects shear strength resistance of precast shear walls. Further, it was found that the flexural strength CES shear walls can be evaluated using a method based on the Architectural Institute of Japan (AIJ) design standard for steel reinforced concrete (SRC) structures.