Hollow bridge-pier properties for response spectrum analysis

Abstract

The present paper proposes equivalent stiffness and energy dissipation properties of reinforced concrete hollow bridge piers to be used in the context of response spectrum performance based assessment and design. The work is carried out by performing parametric numerical analysis using a 2D fibre model calibrated against experimental results and by varying the longitudinal steel reinforcement ratio, height over width ratio, normalised axial force, level of confinement and concrete class of a rectangular hollow section reinforced with Tempcore B500C steel. The results of the analysis are given in the form of charts and closed form expressions for the yield curvature and moment, ultimate ductility, post yielding stiffness ratio and energy dissipated of the section, and are translated to the member level through the plastic hinge length approach. Likewise, the parameters of a Takeda model derived from the parametric analysis are given for use in nonlinear time history analysis.Keywords Bridge pier hollow section · Performance based design · Equivalent stiffness · Equivalent damping · Plastic hinge length · Takeda model Abbreviations DBD Displacement based design PsD Pseudo-dynamic RC Reinforced concrete

Displacement limits and performance displacement profiles in support of direct displacement‐based seismic assessment of bridges

“…(4)), as a function of the axial load due to the gravity loads and volumetric ratio of longitudinal reinforcement. For hollow sections, reference to a number of semi-empirical relationships can be made to evaluate yield and ultimate curvature of rectangular hollow columns [22] and circular hollow columns [23,24].…”

“…For hollow sections, reference to a number of semi‐empirical relationships can be made to evaluate yield and ultimate curvature of rectangular hollow columns and circular hollow columns .…”

Force based Design Approach for Seismic Evaluation of Padma Multipurpose Bridge Pier at Different Performance Levels

“…Response spectrum considers the spectrum of a response quantity like ground acceleration concerning the frequency of the structure. Seismic evaluation of hollow bridge pier is previously investigated by (Taucer et al, 2010). They calibrated the response spectrum of the bridge pier using damping and hysteretic response of the pier.…”

Numerical Analysis of Concrete Arch Bridge on the Situation of Seismic Damage

“…Meanwhile, the pounding phenomenon associated with the seismic response of multi-span simply supported bridges can not been ignored. Zanardo G.et al(2002) and Lupoi A.et al (2005)considered that pounding phenomenon associated with the seismic response of multi-span simply supported bridges can not been ignored [4,5] ; Zhiqiang Wang and George C. Lee(2009)compared the bridge damage due to the Wenchuan, Northridge, Loma Prieta and San Fernando earthquakes,and considered that the magnitude of Wenchuan earthquake was much exceed the seismic fortification intensity in the standard after comparing the standard content between China and American [6] ; Fabio F. Taucer(2010)analyzed the equivalent stiffness and energy dissipation properties of reinforced concrete hollow bridge piers adopting response spectrum performance based assessment and design, and gave closed expressions for the yield curvature and moment [7] ; Dong S.L. (2007) summarized six semi-active control algorithms, and analyzed the semi-active control of seismic responses for a three-span simply supported beam bridge with viscous dampers under different ground motion inputs,and compared the influences of different ground motion inputs and semi-active control algorithms on control effect of seismic response for simply supported beam bridge [8] .…”