Thrust Area 2—Bridge and Transportation Systems
Ross Boulanger (UCD) & Stephen Mahin (UCB)
Co-Thrust Leaders

Project Descriptions

Simulation of Soil-Foundation-Structure Interaction of Deep Foundations—2312003
Ross Boulanger (UCD /F), Scott Brandenberg (UCD/GS), Dongdong Chang (UCD/GS), Heidi Feigenbaum (UCD/GS)

This project supports PEER's mission of providing performance based methodologies for bridge and building systems by addressing a problem that is of strong interest to owners and a major source of uncertainty in current design and assessment practices.
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Performance of Lifelines Subjected to Lateral Spreading—2342003
Scott Ashford (UCSD /F), Chia-Ming Uang (UCSD/F), Teerawut Juirnarongrit (UCSD/PD), Lisa Everingham (UCSD/US), Sean Walsh (UCSD/GS), Maria Ibarra (UCSD/O), Charlotte Richardson (UCSD/O), Robert Parks (UCSD/O), Yosuke Kawamata (UCSD/GS)

The overall project goal is to utilize the full-scale data assess current methods for estimating the effect of lateral spreading on pile foundations and pipelines, and develop new procedures if necessary. Specifically for Year 7, our objectives are to extend results obtained from Tokachi experiment to other experimental results and to model lateral spreading of blast experiment using seismic loading in OpenSees.
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Evaluation and Propagation of the Influence of Geotechnical Uncertainties on EDP's—2352003
Steve Kramer (UW/F), Pedro Arduino (UW/F), Sarah Paulsen (UW/GS)

The goal of the proposed project is to systematically investigate the effects of uncertainty in geotechnical parameters on uncertainty in engineering demand parameters (EDPs).
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Incorporation of Efficient Ground Motion Intensity measures in Probabilistic Seismic Hazard Assessments of Bridges and Slopes—2362003
Jonathan Bray (UCB/F), Thaleia Travasarou (UCB/PD)

The primary objective of this research project is to incorporate several of the most efficient ground motion intensity measures (IM’s), such as Sa(2T) and Ia, and the well-used IM PGA into a full probabilistic seismic hazard assessment (PSHA) of problems of interest to PEER, e.g. the seismic displacement of non-liquefiable earthen slopes.
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Workshop on Simulation and Seismic Performance of Deep Foundations—2372003
Ross Boulanger (UCD/F)

The proposed workshop will be the culmination of a comparative evaluation of emerging design methods for pile foundations in liquefied ground. The overall goals are as follows:

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Cumulative Damage Models for Reinforcing Bar Buckling and Fracture in RC Beams and Columns—5402003
Dawn Lehman (UW/F), John Stanton (UW/F)

The overall objective of the research is to advance the understanding of bar buckling in circular reinforced concrete columns and the parameters that control it.
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Tri-Center Initiative—3342003
Jack Moehle (UCB/F), Ron Eguchi (ImageCat/I)

The goal is to enhance PEER research in geographically distributed networks by strategic planning and collaboration with other earthquake centers.
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Database and Simulation Performance Criteria for Reinforced Concrete Columns—5282003
Marc Eberhard (UW/F), Mike Berry (UW/GS)

As part of this project, we are developing and calibrating tools for assessing RC column seismic performance, including data and models for both seismically conforming (ductile) and non-conforming (brittle) columns.
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Test of Enhanced Performance Post Tensioned Columns—5342003
Stephen Mahin (UCB/F), Junichi Sakai (UCB/GS)

The overall goal of this study is to examine and assess various design concepts for enhancing the seismic performance of new bridge structures of the type being considered by PEER.
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Simulation of Enhanced-Performance Post-Tensioned Bridge—5362003
Sarah Billington (Stanford/F), Won Lee (Stanford/GS), J. Matt Rouse (Cornell/O)

The overall goal of this study is to demonstrate how the PEER PBEE methodology can accelerate the adoption of new bridge design technologies by quantitatively assessing the performance enhancement provided by these technologies.
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Performance Assessment of Highway Overpasses—5392003
Bozidar Stojadinovic (UCB/F), Kevin Mackie (UCB/GS), Kyungkoo Lee (UCB/GS), Meghann Rand (UCB/GS)

The goal of this project is to provide the tools for performance assessment of highway overpass bridges. Such tools enable assessment of bridge performance in terms of the potential for bridge collapse in an earthquake, cost of repair of such a bridge after an earthquake, and the ability of the bridge to carry a given level of traffic load after an earthquake.
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Impact of Uncertainties in Seismic Performance Assessment of Highway Systems—3392003
Anne Kiremidjian (Stanford/F), Ozgur Yazlali (Stanford/GS), Renee Lee (Stanford/GS)

The objective of this project is to investigate the influence of uncertainty on risk assessment of spatially distributed systems, such as transportation network.
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Traffic Delay and Loss Models for Seismic Performance Assesment of Highway Systems—3402003
James Moore (USC/F), Yueyue Fan (UCD/F), Sungbin Cho (USC/GS/I), Sei-Young Lee (USC/GS)

The goal is to provide tools for retrofit decisions in metropolitan transportation networks.
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