A Simplified Calculation Model for Moment-rotation Curve Used in Semi-rigid End-plate Connections

摘要

This paper presents a simplified calculation model for moment-rotation curve used in semi-rigid end-plate connections. The model includes three characteristic parameters: K_e, M_e and M_y of certain kind of end-plate connections. Classic trilinear M-θ curve model and yielding line theory were utilized to deduce the simplified model. In order to verify the calculation method, four semi-rigid end-plate joints were tested by applying monotonic load. Comparisons are made between the results obtained from the model and the experiment results, it has been proved that the M-θ relationship of semi-rigid end-plate connections, especially their stiffness and flexural capacity during elastic stage, can be accurately estimated by this simplified calculation method and satisfy the requirement of structural design.