scholarly journals Force-based and displacement-based reliability assessment approaches for highway bridges under multiple hazard actions

2015 ◽  
Vol 2 (4) ◽  
pp. 223-232 ◽  
Author(s):  
Chao Huang ◽  
Jerry J. Shen ◽  
Mi Zhou ◽  
George C. Lee
Keyword(s):  
Reliability Assessment ◽  
Highway Bridges ◽  
Displacement Based

Displacement-based design approach for highway bridges with SMA isolators

2011 ◽  
Vol 8 (2) ◽  
pp. 173-190 ◽  
Author(s):  
Jin-Long Liu ◽  
Songye Zhu ◽  
You-Lin Xu ◽  
Yunfeng Zhang
Keyword(s):  
Highway Bridges ◽  
Design Approach ◽  
Displacement Based

scholarly journals Seismic Reliability Assessment of Aging Highway Bridge Networks with Field Instrumentation Data and Correlated Failures, I: Methodology

2014 ◽  
Vol 30 (2) ◽  
pp. 795-817 ◽  
Author(s):  
Jayadipta Ghosh ◽  
Keivan Rokneddin ◽  
Jamie E. Padgett ◽  
Leonardo Dueñas-Osorio
Keyword(s):  
Network Reliability ◽  
Reliability Assessment ◽  
Highway Bridges ◽  
Seismic Reliability ◽  
Construction Methods ◽  
Field Instrumentation ◽  
Correlated Failures ◽  
Bridge Failure ◽  
The Impact ◽  
Deterioration Parameters

The state-of-the-practice in seismic network reliability assessment of highway bridges often ignores bridge failure correlations imposed by factors such as the network topology, construction methods, and present-day condition of bridges, among others. Additionally, aging bridge seismic fragilities are typically determined simply using historical estimates of deterioration parameters. This research presents a methodology to estimate bridge fragilities using spatially interpolated and updated deterioration parameters from a limited set of instrumented bridges in the network, while incorporating the impacts of overlooked correlation factors in bridge fragility estimates. Simulated samples of correlated bridge failures are used in an enhanced Monte Carlo method to assess bridge network reliability, and the impact of different correlation structures on the network reliability is discussed. The presented methodology aims to provide more realistic estimates of seismic reliability of aging transportation networks and to potentially help network stakeholders to more accurately identify critical bridges for maintenance and retrofit prioritization.

Reliability assessment in highway bridge design

2002 ◽  
Vol 29 (5) ◽  
pp. 799-805 ◽  
Author(s):  
M S Cheung ◽  
W C Li
Keyword(s):  
Reliability Assessment ◽  
Highway Bridges ◽  
Highway Bridge ◽  
Design Code ◽  
Bridge Design ◽  
Limit States ◽  
Safety Level ◽  
Reliability Design ◽  
Finite Strip Method ◽  
Standard Design

The current practice of highway bridge design in Canada is based on limit states design. Ideally, by means of the properly calibrated load and resistance factors specified in the applicable design code, limit states design will yield a consistent and uniform safety level for all designed bridge structures. Some factors neglected in the standard design procedures, however, may have unexpected effects on the reliability of a particular design. In this case, to follow a design code exactly may still lead to a certain degree of underdesign or overdesign. Therefore, the reliability assessment is recommended for each particular design, and a simulation-based approach for this assessment is proposed in this study. Examples are presented to support the afore-mentioned recommendation.Key words: highway bridges, reliability, design code, simulation, finite strip method.

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