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Enabling efficient regional seismic fragility assessment of multi‐component bridge portfolios through Gaussian process regression and active learning

Earthquake Engineering & Structural Dynamics
Regional seismic fragility assessment of bridge portfolios must address the embedded uncertainties and variations stemming from both the earthquake hazard and bridge attributes (e.g., geometry, material, design detail).
Chunxiao Ning   +3 more
semanticscholar   +1 more source

Seismic performance by fragility surfaces

2014
A method is developed for constructing fragilities as functions of two parameters, source-to-site distance, r, and moment magnitude, m. The method is based on a seismological model for site ground motion and seismic activity matrices available from USGS.
Grigoriu, Mircea   +2 more
openaire   +1 more source

Seismic Fragility Methodology for Highway Bridges

Structures Congress 2006, 2006
Bridge fragility curves, which express the probability of a br idge reaching a certain damage state for a given ground motion parameter, play an important role in the overall seismic risk assessment of a transportation network. For various reasons, analytical methodologies for developing these fragility curves have experienced an increase in demand and
Bryant G. Nielson, Reginald DesRoches
openaire   +1 more source

Bridge fragilities to network fragilities in seismic scenarios: An integrated approach

Engineering Structures, 2021
Abstract As significant uncertainties are associated with the factors governing the operational characteristics of bridges following earthquakes, it is important to compute the reliability of transportation networks as a function of bridge fragility. A novel framework for the computation of transportation network fragilities following earthquakes is ...
Mengdie Chen   +2 more
openaire   +1 more source

Optimizing seismic fragility assessments for high-speed railway track bridges: a novel multi-parameter methodology and intensity measure selection

Mechanics based design of structures and machines
This research innovatively presents a multi-parameter seismic fragility analysis methodology anchored on Blending ensemble learning tailored for the high-speed railway track-bridge (HSRTB) system.
Wang-bao Zhou   +5 more
semanticscholar   +1 more source

Seismic fragility analysis of the Koyna gravity dam with layered rock foundation considering tensile crack failure

Engineering Failure Analysis, 2021
In the present investigation, the seismic fragility analysis of the Koyna dam-reservoir-layered rock foundation system is performed, considering foundation flexibility.
Aniket R. Tidke, S. Adhikary
semanticscholar   +1 more source

Seismic Fragility Functions for Sewerage Pipelines

Pipelines 2015, 2015
Fragility functions (or fragility curves when presented graphically) are a well established tool to assess seismic risk to infrastructures. Given a sustained level of ground motion intensity, seismic fragility functions of sewerage pipelines are used for predicting earthquake-induced physical damage to sewer pipes. However, existing fragility functions
M. Liu, S. Giovinazzi, P. Lee
openaire   +1 more source

Seismic fragility assessment of existing masonry buildings in aggregate

Engineering structures, 2021
The paper describes the derivation of fragility curves useful for the seismic risk analyses of existing unreinforced masonry buildings inserted in aggregate.
M. Angiolilli   +3 more
semanticscholar   +1 more source

E-Cloud: Efficient seismic fragility assessment of structures based on enhanced cloud analysis

Earthquake spectra, 2022
Cloud analysis is based on linear regression in the logarithmic space using least squares, in which a large number of nonlinear dynamic analyses are required to ensure the regression accuracy.
Lujie Zhuang, Pengcheng Yin, Y. Pang
semanticscholar   +1 more source

Seismic fragility analysis of 3D structures

Structural Safety, 2004
A statistical approach for time-variant system reliability problems is developed and investigated. The basic proposal is to use a response surface, characterised by a statistical model of the mixed type, to represent the capacity in an analytical limit-state function.
M. I. J. Schotanus   +3 more
openaire   +2 more sources

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