A Reliability analysis on the applicability range of Caltrans-SDC method to address the P-Delta effects

2nd International Conference on Civil Engineering and Materials Science

Heydarpour, P.^1

Department of Civil and Environmental Engineering, George Washington University, Washington

DC

20057, United States^1

关键词: Design criteria;    Induced bending moments;    Maximum ratio;    Nonlinear time history analysis;    P-Delta effect;    Push-over analysis;    Safe margin;    Yielding moment;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/216/1/012052/pdf
DOI  :  10.1088/1757-899X/216/1/012052

来源: IOP

【 摘 要 】

The main objective of this research is to investigate the applicability range on the Caltrans Seismic Design Criteria (SDC) to address the P-Delta effect. Caltrans SDC defines a maximum ratio for bending moment induced by P-Delta effects over the yielding moment capacity of the column. For columns satisfying this criterion predefined target ductility is used to design the columns. Columns with higher P-Delta induced bending moments should be subjected to nonlinear time history analysis to verify their performance. Typically, designers to prevent performing time consuming, nonlinear time history analyses resize the column to remain in the safe margin. This study through rigorous push over analyses identifies the applicability range for the Caltrans-SDC method.