Abstract
<p>The work in seismic design of bridges is needed to develop physical models and mathematical theory, based on which will be assessed and quantified the dynamic response of bridge structures subjected to stress arising from road traffic or seismic activity.</p><p>The need for this modeling is imposed three requirements: to ensure the structural integrity of the bridge elements for subjected impulsive, proper choice of dynamic insulation elements placed as a interface between the superstructure and infrastructure, as well as analysis of effects on joints in these situations demand. This paper proposes a physical model of a general nature, enabling customization depending on the specific constructive bridge, or the way it is solicited. Customize this model was developed for this study based on the existing viaduct Transylvania highway located between km 29 +602.75 and km 29 +801.25.</p>
Highlights
Bridges and viaducts are vital structures railway and traffic networks, for which there are embedded in their structure, systems for isolation and impulsive damping actions resulting from road traffic and the seismic activities
At commissioning dynamic isolation systems there will be performed a series of experimental measurements to quantify the kinematics and energy parameters of the deck vibrations of a section of bridge
This study shows one way of characterizing the dynamic response of a bridge or viaduct section, if its loading by loads from road traffic
Summary
Bridges and viaducts are vital structures railway and traffic networks, for which there are embedded in their structure, systems for isolation and impulsive damping actions resulting from road traffic and the seismic activities. Due to the intense and varied demands, which the dynamic isolation systems are subjected to, it degrades over time and changing the response to the stresses it is subjected. It is the moment when these systems must be replaced with new ones. Determining precisely when it is needed to replace these dynamic insulation systems, it is done by monitoring in time the kinematic and energy parameters of vibration in response to the same type of requests. At certain periods of time, these types of experimental measurements will be repeated for a comparative analysis of the targeted parameters In this way, highlighting the differences that arise between the parameters values at different time, data provide information about normal function of dynamic isolation systems. This essay will highlight the theoretical point of view of parameters, to be monitored regularly by experimental measurements
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