| Title |
The Strength of Wall-to-Floor Joints in Large Panel Structures |
| Abstract |
This paper is to study the strength and the failure modes of wall-to-floor joints in large panel Precast concrete structures and offer methods for reasonable joint design.The variables investigated in this study were the strength of joint grout, with or without bearing pads, the amount of transverse reinforcement in the end of the walls, and the width ratio of joint grout to wall. The tests were conducted of fifteen full-scale wall-to-floor joints of the "closed" type under uniaxial compression on upper wall.The expression of joint capacity was proposed through complement of defects on the existing design recommendations and proposed methods for the ultimate strength of joint, and compared with test results.The results of this study show that joint capacity mainly depends not only on grout strength but the width ratio of joint grout to wall because of wall splitting failure, and that the possibility of wall splitting failure is high near to 0.5, the width ratio. |