Seismic response of concentrically braced frames meeting Canadian design criteria

This thesis deals with the non-linear dynamic time history analysis of a certain type of medium- and high-rise concentric braced frame designed according to the new National Building Code of Canada (1990) and CAN/CSA-S16.1-M89. The program DRAIN-2D was used to carry out the earthquake simulations of this structure. A number of recorded earthquakes was selected as the input of ground motions.A preliminary statistical study is attempted on the structural response to the ground motions.The design procedures proposed by the new design codes are evaluated. Some provisions of Clause 27 of the CAN/CSA-S16.1-M89 have been found inadequate in the light of the analysis described. Some revised procedures are proposed and then evaluated against those currently in use. The results are shown to provide improved designs