This research aims to investigate the seismic behavior of steel column-tree moment connections with widened flange through nonlinear finite element analysis and full-scale test.

• 本研究藉由有限元素分析与实尺寸梁柱接头试验，探讨扩翼式梁柱接头于钢骨托梁抗弯构架之耐震行为。