Free vibration problem of prsi bridges: analytical solution and parametric analysis

E. Tubaldi; A. Dall'asta

Free vibration problem of prsi bridges: analytical solution and parametric analysis

Civil And Environmental Engineering

Research output: Contribution to conference › Paper

Abstract

This paper analyzes the dynamic behavior of partially restrained seismically isolated (PRSI) bridges. These are a particular class of multi-span seismically isolated bridges in which isolation bearings are posed only at the top of the piers, while seismic stoppers restrain the transverse motion of the superstructure at the abutments. The transverse dynamic behavior of these partially-restrained bridges is described analytically by considering a two-dimensional simply supported beam model, with intermediate visco-elastic restraints whose properties are calibrated to describe the substructures' behavior. Particular simplified configurations are considered which allow to identify a minimal set of characteristic problem parameters that completely describe the dynamic response. The properties of the dynamic systems are analyzed by considering separately the undamped and the damped case. The results of the study contribute to improve the understanding of the dynamic behavior of partially restrained seismically isolated bridges and allow to draw some conclusions useful for their preliminary assessment and design.

Original language	English
Number of pages	20
Publication status	Published - 2011
Event	3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering - Corfu, Greece Duration: 25 May 2011 → 28 May 2011 Conference number: 3 http://eccomas.cimne.com/cvdata/cntr1/spc14/dtos/img/mdia/COMPDYN-2011-Brochure.pdf

Conference

Conference	3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
Abbreviated title	COMPDYN 2011
Country/Territory	Greece
City	Corfu
Period	25/05/11 → 28/05/11
Internet address	http://eccomas.cimne.com/cvdata/cntr1/spc14/dtos/img/mdia/COMPDYN-2011-Brochure.pdf

Keywords

analytical solutions
dynamic behaviors
free vibration
free vibration problem
isolation bearings
mlti-spans
non-classical damping
parametric analysis
partial restraint
preliminary assessment
problem parameters
seismic isolation
simply supported beam model
transverse dynamics
transverse motions
visco-elastic
civil engineering
computational methods
dynamic response
earthquakes
engineering geology
structural dynamics
bearings (structural)
vibration analysis

Cite this

@conference{9f7035da3d54473981f1470a5768dab2,

title = "Free vibration problem of prsi bridges: analytical solution and parametric analysis",

abstract = "This paper analyzes the dynamic behavior of partially restrained seismically isolated (PRSI) bridges. These are a particular class of multi-span seismically isolated bridges in which isolation bearings are posed only at the top of the piers, while seismic stoppers restrain the transverse motion of the superstructure at the abutments. The transverse dynamic behavior of these partially-restrained bridges is described analytically by considering a two-dimensional simply supported beam model, with intermediate visco-elastic restraints whose properties are calibrated to describe the substructures' behavior. Particular simplified configurations are considered which allow to identify a minimal set of characteristic problem parameters that completely describe the dynamic response. The properties of the dynamic systems are analyzed by considering separately the undamped and the damped case. The results of the study contribute to improve the understanding of the dynamic behavior of partially restrained seismically isolated bridges and allow to draw some conclusions useful for their preliminary assessment and design.",

keywords = "analytical solutions, dynamic behaviors, free vibration, free vibration problem, isolation bearings, mlti-spans, non-classical damping, parametric analysis, partial restraint, preliminary assessment, problem parameters, seismic isolation, simply supported beam model, transverse dynamics, transverse motions, visco-elastic, civil engineering, computational methods, dynamic response, earthquakes, engineering geology, structural dynamics, bearings (structural), vibration analysis",

author = "E. Tubaldi and A. Dall'asta",

note = "cited By 0; 3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2011 ; Conference date: 25-05-2011 Through 28-05-2011",

year = "2011",

language = "English",

url = "http://eccomas.cimne.com/cvdata/cntr1/spc14/dtos/img/mdia/COMPDYN-2011-Brochure.pdf",

}

TY - CONF

T1 - Free vibration problem of prsi bridges

T2 - 3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering

AU - Tubaldi, E.

AU - Dall'asta, A.

N1 - Conference code: 3

PY - 2011

Y1 - 2011

N2 - This paper analyzes the dynamic behavior of partially restrained seismically isolated (PRSI) bridges. These are a particular class of multi-span seismically isolated bridges in which isolation bearings are posed only at the top of the piers, while seismic stoppers restrain the transverse motion of the superstructure at the abutments. The transverse dynamic behavior of these partially-restrained bridges is described analytically by considering a two-dimensional simply supported beam model, with intermediate visco-elastic restraints whose properties are calibrated to describe the substructures' behavior. Particular simplified configurations are considered which allow to identify a minimal set of characteristic problem parameters that completely describe the dynamic response. The properties of the dynamic systems are analyzed by considering separately the undamped and the damped case. The results of the study contribute to improve the understanding of the dynamic behavior of partially restrained seismically isolated bridges and allow to draw some conclusions useful for their preliminary assessment and design.

AB - This paper analyzes the dynamic behavior of partially restrained seismically isolated (PRSI) bridges. These are a particular class of multi-span seismically isolated bridges in which isolation bearings are posed only at the top of the piers, while seismic stoppers restrain the transverse motion of the superstructure at the abutments. The transverse dynamic behavior of these partially-restrained bridges is described analytically by considering a two-dimensional simply supported beam model, with intermediate visco-elastic restraints whose properties are calibrated to describe the substructures' behavior. Particular simplified configurations are considered which allow to identify a minimal set of characteristic problem parameters that completely describe the dynamic response. The properties of the dynamic systems are analyzed by considering separately the undamped and the damped case. The results of the study contribute to improve the understanding of the dynamic behavior of partially restrained seismically isolated bridges and allow to draw some conclusions useful for their preliminary assessment and design.

KW - analytical solutions

KW - dynamic behaviors

KW - free vibration

KW - free vibration problem

KW - isolation bearings

KW - mlti-spans

KW - non-classical damping

KW - parametric analysis

KW - partial restraint

KW - preliminary assessment

KW - problem parameters

KW - seismic isolation

KW - simply supported beam model

KW - transverse dynamics

KW - transverse motions

KW - visco-elastic

KW - civil engineering

KW - computational methods

KW - dynamic response

KW - earthquakes

KW - engineering geology

KW - structural dynamics

KW - bearings (structural)

KW - vibration analysis

UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-80054803936&partnerID=40&md5=35bb365d7b0ad72871aeb3f105b7d72e

M3 - Paper

Y2 - 25 May 2011 through 28 May 2011

ER -

Free vibration problem of prsi bridges: analytical solution and parametric analysis

Abstract

Conference

Keywords

Other files and links

Fingerprint

Cite this