Laboratory investigation on detecting bridge scour using the indirect measurement from a passing vehicle

B Zhang, H Zhao, C Tan, EJ OBrien, PC Fitzgerald… - Remote Sensing, 2022 - mdpi.com
For bridges with surface foundations, scour is one of the main reasons for bridge failures. In
regard to structural health monitoring, vibration-based scour detection techniques have …

Extracting mode shapes from drive-by measurements to detect global and local damage in bridges

C Tan, H Zhao, EJ OBrien, N Uddin… - Structure and …, 2021 - Taylor & Francis
This article uses extracted bridge mode shapes to detect bridge damage, including both
local damage such as that due to a bridge strike and global damage such as that due to …

Wavelet-based operating deflection shapes for locating scour-related stiffness losses in multi-span bridges

EJ OBrien, DP McCrum, MA Khan… - Structure and …, 2023 - Taylor & Francis
Scour erosion poses a significant risk to bridge safety worldwide and affects the stiffness of
the soil-foundation system, resulting in global changes in the dynamic behavior of the …

Condition Monitoring of Railway Bridges Using Vehicle Pitch to Detect Scour

C McGeown, D Hester, EJ OBrien, CW Kim… - Sensors, 2024 - mdpi.com
This study proposes the new condition monitoring concept of using features in the measured
rotation, or 'pitch'signal, of a crossing vehicle as an indicator of the presence of foundation …

[PDF][PDF] Modified Lysmer's analog model for two dimensional mat settlements under vertically uniform load

DW Chang, MH Hung, SS Jeong - Geomechanics and …, 2021 - researchgate.net
A two dimensional model of linearly elastic soil spring used for the settlement analysis of the
flexible mat foundation is suggested in this study. The spring constants of the soils …

筏基變形數值分析之土壤彈簧模式應用比較

林宏諭 - 淡江大學土木工程學系碩士班學位論文, 2021 - airitilibrary.com
本研究以WERAFT 之筏基變形差分程式為基礎, 代入各學者所建議之土壤彈簧參數進行受力
基礎沉陷量分析, 並與三維有限元素分析軟體Midas-GTX-NX 分析結果驗證 …

Bridge Scour Detection using Vehicle Acceleration Measurements

EJ O'Brien, A Malekjafarian… - … , V., Keenahan, J.(eds …, 2018 - researchrepository.ucd.ie
Bridge scour is a serious issue concerning bridge condition and can have adverse
consequences if undetected. It is the most common cause of bridge collapse today. One …

Performance evaluation of a concrete wall panel-frame housing system for informally constructed environments: A case study in design innovation for Haiti

E Jensen - 2016 - curate.nd.edu
Each year, natural disasters devastate landscapes and lives, uprooting communities around
the world. Such disturbances invoke widespread human, material, and economic losses, as …

Effects of Vertical Ground Motion on Seismic Performance of Reinforced Concrete Flat-Plate Buildings

SJ George - 2016 - digitalscholarship.unlv.edu
Reinforced concrete flat plate is a type of structural system widely used for office and
residential buildings in many areas including those with high seismic risk. In the regions of …

Modelowanie współpracy konstrukcji mostowych z gruntem w obliczeniach inżynierskich

R Oleszek - Inżynieria i Budownictwo, 2020 - yadda.icm.edu.pl
Zintegrowane ustroje ramowe posadowione na palach fundamentowych charakteryzują się
współpracą z ośrodkiem gruntowym. Na rozkład sił wewnętrznych w konstrukcji wpływają …