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RISEffect of Pounding and Restrainers on Seismic Response of Multiple-Frame Bridges
Publisher: American Society of Civil Engineers
Abstract: Pounding between adjacent frames in a multiple-frame bridge produces undesirable forces resulting in large displacements, local damage, and possible failure of column bents. In this study, analytical models are used to ...
Comparison between Shape Memory Alloy Seismic Restrainers and Other Bridge Retrofit Devices
Publisher: American Society of Civil Engineers
Abstract: Strong earthquakes can result in large longitudinal displacements in multiple-frame bridges. This could lead to excessive displacements/openings at the intermediate joints. Bridges with small seat widths are vulnerable to ...
Sensitivity of Seismic Applications to Different Shape Memory Alloy Models
Publisher: American Society of Civil Engineers
Abstract: Shape memory alloys (SMAs) are known for their superelastic properties, which have been exploited in numerous applications in the biomedical, aerospace, and commercial fields. More recently, these materials have been ...
Numerical and Experimental Evaluation of the Damping Properties of Shape-Memory Alloys
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents and compares two different uniaxial constitutive models for superelastic shape-memory alloys (SMAs), suitable to study the dependence of the stress-strain relationship on the ...
Sensitivity of Seismic Response and Fragility to Parameter Uncertainty
Publisher: American Society of Civil Engineers
Abstract: As the use for regional seismic risk assessment increases, the need for reliable fragility curves for portfolios (or classes) of structures becomes more important. Fragility curves for portfolios of structures have the ...
Design of Seismic Cable Hinge Restrainers for Bridges
Publisher: American Society of Civil Engineers
Abstract: The collapse of bridges due to unseating at intermediate (in-span) hinges during recent earthquakes emphasizes the need to provide an adequate number of restrainers to limit the relative displacement between frames in a ...
Seismic Performance Assessment of Simply Supported and Continuous Multispan Concrete Girder Highway Bridges
Publisher: American Society of Civil Engineers
Abstract: Seismic evaluations of typical concrete girder bridges are conducted for both a multispan simply supported and a multispan continuous girder bridge common to the Central and Southeastern United States. These evaluations ...
Multinode Gradient Inelastic Force-Based Beam-Column Element Formulation
Publisher: ASCE
Abstract: In the presence of softening section constitutive relations, classical beam theories predict erroneous strain singularities, and the corresponding force/flexibility-based (FB) beam-column element formulations result in ...
Impact of Spatial Variability Parameters on Seismic Fragilities of a Cable-Stayed Bridge Subjected to Differential Support Motions
Publisher: American Society of Civil Engineers
Finite-Element Modeling of Hybrid Concrete-Masonry Frames Subjected to In-Plane Loads
Publisher: American Society of Civil Engineers
Abstract: Caribbean-style hybrid concrete-masonry structures consist of a RC frame infilled with partially grouted and reinforced masonry walls that are connected to the RC frame with cast-in-place dowels along one or more edges of ...