상·하부 스플릿 T 접합부의 초기회전강성 예측모델

초록

A double split tee connection is used as a connection suitable for ordinary moment frame or special moment frame according to the combination of variables of the thickness of the T-stub flange and the gauge distance of the high-strength bolts. In order to demonstrate the safe structural behavior, a double split tee connection shall meet the requirements for interstory drift angle and the moment of connection as defined in the Korea Building Code-Structural. In order to determine whether the these requirements are met, it is necessary to predict the rotational stiffness and ultimate plastic moment of the connection. Therefore, this study primarily aimed to propose an analytical model for predicting rotational stiffness of a double split tee connection under a static load. Towards this end, a three-dimensional nonlinear finite element analysis was carried out.