Seismic Fragility Analysis of Reinforced Concrete Simply Supported Girder Bridges Resting on Double-Column Piers for High Speed Railway

This study investigates the probabilistic seismic damage characteristics of a five-span RC simply supported girder bridge with double-column piers designed for a high-speed railway (HSR). The objective is to assess the bridge’s fragility by developing a refined nonlinear numerical model using the Op...

Full description

Saved in:
Bibliographic Details
Published in:Buildings (Basel) 2024-10, Vol.14 (10), p.3072
Main Authors: Zhou, Yongzheng, Gao, Ce, Yang, Sibo, Guo, Wei, Jiang, Liqiang
Format: Article
Language:English
Subjects:
Bearings
Bridge piers
Bridges
Columns (structural)
Concrete
copula function
Damage assessment
double-column piers with tie beams
Ductility
Earthquake damage
Earthquakes
Fragility
Girder bridges
High speed rail
High speed trains
high-speed railway (HSR)
incremental dynamic analysis
Mathematical models
Numerical models
Piers
Railroads
Railway engineering
Reinforced concrete
Seismic analysis
seismic fragility
Seismic response
simply supported girder bridges
Statistical analysis
Waterfront development
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study investigates the probabilistic seismic damage characteristics of a five-span RC simply supported girder bridge with double-column piers designed for a high-speed railway (HSR). The objective is to assess the bridge’s fragility by developing a refined nonlinear numerical model using the OpenSEES (Version 3.3.0) platform. Incremental dynamic analysis (IDA) was conducted with peak ground accelerations (PGA) ranging from 0.05 g to 0.5 g, and fragility curves for pier columns, tie beams, and bearings were developed. Additionally, a series–parallel relationship and a hierarchically iterated pair copula model were established to evaluate system fragility. The results indicate that as PGA increases, the damage probability of all bridge components rises, with bearings being the most vulnerable, followed by pier columns, and tie beams exhibiting the least damage. The models accurately simulate the correlations between members and system fragility, offering valuable insights into the bridge’s performance under seismic conditions.
ISSN:2075-5309
2075-5309
DOI:10.3390/buildings14103072