Progressive collapse in steel moment frame structures.

摘要

Progressive collapse is perhaps the most volatile topic in structural engineering today. The apparent rise in terrorist activities has led the entire construction community to question whether today's buildings are adequately designed for these new loads. There has been a strong push to add some form of progressive collapse criteria to building codes; however, there have been many difficulties.; This thesis presents a comprehensive review of the current state of research on progressive collapse. Among the topics covered are blast effects, dynamic response, nonlinear behavior, ductile connections, recommended design principles and computer analysis.; To examine the principles presented in the research, idealized building models were analyzed using SAP2000. The models were primarily analyzed using the nonlinear static analysis approach. For comparative purposed, linear static and nonlinear dynamic analyses were also performed on the models. The study indicates that there is in fact a distinct advantage to using nonlinear analyses techniques.