钢筋混凝土阶形柱的上柱是抗震中的薄弱环节
吴育才
The Upper Part of Reinforced Concrete Step-Column Is the Most Weak Place In Earthquake
Wu Yucai(General Design and Research Institute, Ministry of Machine-Building )
建筑结构学报 . 1985, (05): 57 -63 .