A comparative study of the ATC-40 recommended and numerically derived M-phi relationship

作者：Muin Sifat Sharmeen^*; Hossain Tahsin Reza

来源：Earthquake Engineering and Engineering Vibration, 2011, 10(4): 547-552.

DOI：10.1007/s11803-011-0088-7

• moment-curvature relationship
• conforming
• non-conforming
• ductility factor
• confinement
• ultimate curvature

Nonlinear static analysis procedures are key tools in evaluating the performance of existing buildings and verifying the design of seismic retrofits in seismically active regions. In this procedure, nonlinear force-displacement or moment-curvature (M-phi) behavior needs to be defined. In the ATC-40 document, values of M-phi have been proposed to model elements in a nonlinear procedure. However, these values need to be investigated to determine if they are representative of actual values. In this paper, an attempt has been made to numerically derive M-phi curves to simulate actual performance. Then, these curves are compared with the ATC-40 recommended curves with respect to various parameters. The study indicated that ATC-40 suggested values are conservative in nature in most situations.

• 出版日期2011-12