applied sciences Article Collapse Responses of Concrete Frames Reinforced with BFRP Bars in Middle Column Removal Scenario Tao Yang 1,2,3,* , Zhongqing Han 1 , Nianchun Deng 1,2,3,* and Wanqing Chen 1 1 College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, ...