Lumped-Plasticity Models for Performance Simulation of Bridge Columns by ProQuest

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									 ACI STRUCTURAL JOURNAL                                                                                 TECHNICAL PAPER
Title no. 105-S26


Lumped-Plasticity Models for Performance
Simulation of Bridge Columns
by Michael P. Berry, Dawn E. Lehman, and Laura N. Lowes

The current state of practice in bridge seismic design focuses on         bar buckling.9,10 Therefore, essential to model development
achieving life-safety performance under a maximum credible                for PBEE is the need to identify: 1) engineering demand
earthquake. Typically, a lumped-plasticity model, which is based          parameters (EDPs) that can be computed using response
on a specified plastic-hinge length expression, is employed to estimate   models and are efficient predictors of damage; and 2) damage
the ultimate displacement capacity. In contrast to current design
                                                            
								
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