The retrofit of the bridge
consists of seismic isolation of the bridge deck in the steel
truss approach spans, and use of passive energy
dissipaters at the tower column base connections. The numerical results of the HDRBs have shown that the improved rheology model can predict the mechanical behaviour of the bearings in a quite better way in comparison to the original rheology model, particularly at higher shear strain levels of the bearings. Instant access to the full article PDF. In order to be human-readable, please install an RSS reader. R. There are many cases of
damage of bridges in the past earthquakes all over the
world.
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C Bridges
(a) LRB System
(b) Lead-rubber bearing. 0067 x 109
Mass density (kg/m3) 2. Therefore, the seismic isolation is promising
alternative for earthquake-resistant design of bridges. The three functions could be
concentrated into a single device or could be provided by
means of different components. The
Arkansas and Tennessee Departments of Transportation
conducted retrofitting of the bridge where existing
bearings were replaced by friction pendulum bearings. This type of
paper provides an outlook on future directions of research or possible applications.
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A variety of isolation
devices including elastomeric bearings (with and without
lead core), frictional/sliding bearings and roller bearings
have been developed and used practically for aseismic
design of buildings during last 20 years in many new
buildings in countries like USA, Japan, UK, Italy, New
Zealand etc. Generally, the LRB system exhibits
high-damping capacity, horizontal flexibility and high vertical
stiffness. The important parameters included are the flexibility of the bridge piers and the stiffness and yield strength of the L-RB. In the first part of the paper, the adequacy of the two elasto-visco-plasticity-based rheology models has been checked in predicting the mechanical behaviour of the HDRBs, subjected to sinusoidal loadings.
Editor’s Choice articles are based on recommendations by the scientific editors of MDPI journals from around the world. ,
1999).
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edu, The Science Institute
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Published 2016
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