101- مقاله انگلیسی-APPLICATION OF PUSHOVER ANALYSIS ON REINFORCED CONCRETE B
101- مقاله انگلیسی-APPLICATION OF PUSHOVER ANALYSIS ON REINFORCED CONCRETE B
شماره فایل : 101
APPLICATION OF PUSHOVER ANALYSIS ON REINFORCED
CONCRETE BRIDGE MODEL
Abstract
This report describes a non-linear static (pushover) analysis method for prestressed reinforced concrete structures that predicts behavior at all stages of loading, from the initial application of loads up to and beyond the collapse condition. A look insight into pushover methodology described in EC8, FEMA-273/356 and ATC-40 documents also is presented. The nonlinear static (pushover) analysis method (NSP), developed here use “line elements” approach, and are based on the degree of refinement in representing the plastic yielding effects. The elasto-plastic behavior is modeled in two types: (1) distributed plasticity model, when it is modeled accounting for spread-of-plasticity effects in sections and along the beam-column element and (2) plastic hinge, when inelastic behavior is concentrated at plastic hinge locations. Both local (P-δ) and global (P-Δ) nonlinear geometrical effects are taken into account in analysis. The method has been developed for the purpose of investigating the collapse behavior of a three span prestressed reinforced concrete bridge of 115 meters in total length that is to be built in the northeastern of Portugal over Alva River. Performance of this bridge using the nonlinear static method presented here in conjunction with iterative capacity spectrum method specified in the EC8 guidelines will be evaluated