Journal ArticleDOI
Validated Simulation Models for Lateral Response of Bridge Abutments with Typical Backfills
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In this paper, the authors provide numerical simulation models that are validated using data from recent experiments on the lateral response of typical abutment systems, which involve well-compacted clayey silt and silty sand backfill materials.Abstract:
Abutment-backfill soil interaction can significantly influence the seismic response of bridges. In the present study, we provide numerical simulation models that are validated using data from recent experiments on the lateral response of typical abutment systems. Those tests involve well-compacted clayey silt and silty sand backfill materials. The simulation methods considered include a method of slices approach for the backfill materials with an assumed log-spiral failure surface coupled with hyperbolic soil stress-strain relationships [referred to as “log-spiral hyperbolic (LSH) model”] as well as detailed finite-element models, both of which were found to compare well with test data. Through parametric studies on the validated LSH model, we develop equations for the lateral load-displacement backbone curves for abutments of varying height for the two aforementioned backfill types. The equations describe a hyperbolic relationship between lateral load per unit width of the abutment wall and the wall defl...read more
Citations
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Journal ArticleDOI
Artificial neural network based multi-dimensional fragility development of skewed concrete bridge classes
TL;DR: A multi-parameter fragility methodology using artificial neural network to generate bridge-specific fragility curves without grouping the bridge classes is suggested.
Journal ArticleDOI
Seismic behavior of reinforced concrete bridges with skew-angled seat-type abutments
TL;DR: In this paper, a detailed approach for modeling skew-angled seat-type abutments is proposed; and a comprehensive variety of bridge configurations are considered, from which different models are spawned by varying key bridge structural parameters such as column-bent height, symmetry of span arrangement, and abutment skew angle.
Proceedings ArticleDOI
A Framework for Performance-Based Earthquake Engineering of Bridge-Abutment Systems
TL;DR: In this paper, a graphical user interface is developed to combine nonlinear dynamic time history analysis of bridge-abutment ground systems with an implementation of a performance-based earthquake engineering (PBEE) framework.
Journal ArticleDOI
Parameterized Seismic Fragility Curves for Curved Multi-frame Concrete Box-Girder Bridges Using Bayesian Parameter Estimation
TL;DR: In this paper, a Bayesian parameter estimation method was applied to a regional seismic risk assessment of curved concrete bridges to generate multiparameter demand models of components, consisting of various uncertainty parameters and an intensity measure.
Journal ArticleDOI
Stripe-based fragility analysis of multispan concrete bridge classes using machine learning techniques
Sujith Mangalathu,Jong-Su Jeon +1 more
TL;DR: A framework for the generation of bridge-specific fragility utilizing the capabilities of machine learning and stripe-based approach and the proposed methodology using random forests helps to generate or update fragility curves for a new set of input parameters with less computational effort and expensive re-simulation.
References
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Book
Foundation analysis and design
TL;DR: In this paper, Fondation de soutenagement et al. presented a reference record for Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08.
Journal ArticleDOI
Nonlinear Analysis of Stress and Strain in Soils
James M. Duncan,Chin-Yung Chang +1 more
TL;DR: In this article, a simple, practical procedure for representing the nonlinear, stress-dependent, inelastic stress-strain behavior of soils was developed, based on the results of standard triaxial tests on plane strain compression tests involving primary loading, unloading, and reloading.
Journal ArticleDOI
Nonlinear Soil-Abutment-Bridge Structure Interaction for Seismic Performance-Based Design
Anoosh Shamsabadi,Anoosh Shamsabadi,Kyle M. Rollins,Kyle M. Rollins,Mike Kapuskar,Mike Kapuskar +5 more
TL;DR: In this article, the authors employed limit-equilibrium methods using mobilized logarithmic-spiral failure surfaces coupled with a modified hyperbolic soil stress-strain behavior (LSH model) to estimate abutment nonlinear force-displacement capacity as a function of wall displacement and soil backfill properties.
Journal ArticleDOI
Cyclic Lateral Load Behavior of a Pile Cap and Backfill
Kyle M. Rollins,Ryan T. Cole +1 more
TL;DR: In this paper, a series of static cyclic lateral load tests were performed on a full-scale 4×3 pile group driven into a cohesive soil profile, where 12 324-mm steel pipe piles were attached to a concrete pile cap 5.18×3.
Journal ArticleDOI
Lateral Performance of Full-Scale Bridge Abutment Wall with Granular Backfill
Anne Lemnitzer,Eric R. Ahlberg,Robert L. Nigbor,Anoosh Shamsabadi,John W. Wallace,Jonathan P. Stewart +5 more
TL;DR: In this article, a full-scale cyclic lateral load test of an abutment backwall configured to represent the dimensions ( 1.7 m height), boundary conditions, and backfill materials (compacted silty sand) that are typical of California bridge design practice is presented.