Seismic Vulnerability Assessment of a Multi-Span Continuous Steel-Girder Bridge Isolated by SMA Wire-Based Natural Rubber Bearings (SMA-NRB)

2015 ◽  
Author(s):  
F. Hedayati-Dezfuli ◽  
M. Shahria Alam
Keyword(s):  
Natural Rubber ◽  
Vulnerability Assessment ◽  
Seismic Vulnerability ◽  
Continuous Steel ◽  
Steel Girder ◽  
Seismic Vulnerability Assessment ◽  
Steel Girder Bridge ◽  
Girder Bridge ◽  
Rubber Bearings

scholarly journals Accuracy of BWIIVI Using Two-Span Continuous Steel Girder Bridge

2004 ◽  
Vol 7 ◽  
pp. 1135-1140 ◽  
Author(s):  
Eiki Yamaguchi ◽  
Kazushi Matsuo ◽  
Shinichi Kawamura ◽  
Yusuke Kobayashi ◽  
Masafumi Mori ◽  
...  
Keyword(s):  
Continuous Steel ◽  
Steel Girder ◽  
Steel Girder Bridge ◽  
Girder Bridge

Seismic Performance Research of Steel Girder Bridge with Isolation Bearings and Restrainer Cables

2013 ◽  
Vol 353-356 ◽  
pp. 2000-2003
Author(s):  
Peng Zhang ◽  
Cui Ping Pang ◽  
Min Yuan ◽  
Wan Wen Wang
Keyword(s):  
Seismic Performance ◽  
Seismic Isolation ◽  
Steel Girder ◽  
Girder Bridges ◽  
Steel Girder Bridges ◽  
Lead Rubber Bearings ◽  
Steel Girder Bridge ◽  
Girder Bridge ◽  
Rubber Bearings ◽  
Existing Bridges

The seismic performance of multi-span simply supported steel-girder bridges with sliding and high rocker steel bearings is poor during earthquakes. During the past 20 years, seismic isolation has emerged as one of the most promising strategy for improving the seismic performance of existing bridges. In this study elastomeric bearings, lead-rubber bearings, and cable restrainers are attempted to modify the seismic response of bridges, and theirs effects are analyzed and compared.

Seismic Vulnerability Assessment of a Multi-Span Continuous Highway Bridge Fitted with Shape Memory Alloy Bars and Laminated Rubber Bearings

2012 ◽  
Vol 28 (4) ◽  
pp. 1379-1404 ◽  
Author(s):  
M. A. Rahman Bhuiyan ◽  
M. Shahria Alam
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Vulnerability Assessment ◽  
Seismic Vulnerability ◽  
Longitudinal Direction ◽  
Bridge Piers ◽  
Highway Bridge ◽  
Seismic Vulnerability Assessment ◽  
Rubber Bearings ◽  
Bridge System

This study performs seismic vulnerability assessment in the longitudinal direction of a three-span continuous highway bridge, restrained by shape memory alloy (SMA) bars and isolated with laminated rubber bearings. The analytical simulation method based on incremental dynamic analyses is used in evaluating the seismic fragility functions of the bridge components (pier and isolation bearing) and the system. A two-dimensional finite element model scheme with nonlinear force-displacement relationships is used for the bridge piers and bearings. This study shows that the bridge piers with SMA bars have led to relatively higher seismic vulnerability over the bridge piers without SMA bars, which is also reflected in the bridge system. The isolation bearings with SMA bars have revealed comparatively less seismic vulnerability than those without SMA bars. From the numerical results, it is recognized that the failure probability of the bridge system is dictated by the bridge pier over the isolation bearing.

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