Design and experimental analysis of an externally prestressed steel and concrete footbridge equipped with vibration mitigation devices

AbstractA 142-m, three-span continuous footbridge over the Esino River (Italy) is considered as a case study to illustrate a number of challenging aspects in its static and dynamic design. The adoption of an optimized steel deck with a variable cross section together with the use of external prestressing tendons in the central span allows a substantial reduction of structural weights. The resulting footbridge requires a proper model for the assessment of its behavior up to the ultimate limit state as well as attention to vibration control under pedestrian loading at the service limit state. The former issue is addressed through the use of a specifically developed material and geometric nonlinear finite-element formulation. Regarding vibration control, an original combination of two different systems is used, i.e., high damping rubber (HDR) stripes and tuned mass dampers (TMDs). The HDR stripes, applied between the steel deck and the concrete floor, increase the overall damping of the footbridge, whereas t...

[1]  Laura Ragni,et al.  Simplified Method for Failure Analysis of Concrete Beams Prestressed with External Tendons , 2007 .

[2]  Andrea Dall'Asta,et al.  Simplified method for the analysis of externally prestressed steel–concrete composite beams , 2009 .

[3]  Joel P. Conte,et al.  Finite element response sensitivity analysis of continuous steel-concrete composite girders , 2006 .

[4]  Andrea Dall'Asta,et al.  Probabilistic analysis for design assessment of continuous steel-concrete composite girders , 2010 .

[5]  Quanwang Li,et al.  Crowd-induced random vibration of footbridge and vibration control using multiple tuned mass dampers , 2010 .

[6]  D. E. Allen,et al.  Dynamic loading and response of footbridges , 1988 .

[7]  Andrea Dall'Asta,et al.  Nonlinear behavior of dynamic systems with high damping rubber devices , 2008 .

[8]  Joel P. Conte,et al.  Probabilistic Nonlinear Response Analysis of Steel-Concrete Composite Beams , 2014 .

[9]  Laura Ragni,et al.  Finite element formulation for geometric and material nonlinear analysis of beams prestressed with external slipping tendons , 2008 .

[10]  Randall J. Allemang,et al.  THE MODAL ASSURANCE CRITERION–TWENTY YEARS OF USE AND ABUSE , 2003 .

[11]  Filipe Magalhães,et al.  Damping Estimation Using Free Decays and Ambient Vibration Tests , 2010 .

[12]  Ronald L. Sack,et al.  A review of vibration serviceability criteria for floor structures , 2005 .

[13]  Filipe Magalhães,et al.  Studies for controlling human-induced vibration of the Pedro e Inês footbridge, Portugal. Part 2: Implementation of tuned mass dampers , 2010 .

[14]  Yozo Fujino,et al.  Synchronization of human walking observed during lateral vibration of a congested pedestrian bridge , 1993 .

[15]  P. Guillaume,et al.  The PolyMAX Frequency-Domain Method: A New Standard for Modal Parameter Estimation? , 2004 .

[16]  Andrea Dall'Asta,et al.  Dynamic systems with high damping rubber: Nonlinear behaviour and linear approximation , 2008 .

[17]  Andrea Dall'Asta,et al.  Experimental tests and analytical model of high damping rubber dissipating devices , 2006 .

[18]  Geert Lombaert,et al.  Vibration serviceability of footbridges: Evaluation of the current codes of practice , 2014 .

[19]  Andrea Dall'Asta.  On the coupling between three-dimensional bodies and slipping cables , 1996 .

[20]  Laura Ragni,et al.  Analytical Model for Geometric and Material Nonlinear Analysis of Externally Prestressed Beams , 2007 .

[21]  Andrea Dall'Asta,et al.  Finite Element Model for Externally Prestressed Composite Beams with Deformable Connection , 2005 .

[22]  Paul Reynolds,et al.  Vibration serviceability of footbridges under human-induced excitation : a literature review , 2005 .

[23]  Christiane Butz,et al.  Advanced load models for synchronous pedestrian excitation and optimised design guidelines for steel footbridges , 2008 .

[24]  Andrea Dall'Asta,et al.  Nonlinear Behavior of Externally Prestressed Composite Beams: Analytical Model , 1998 .