Results 51 to 60 of about 96,975 (294)

Modelling the effect of sediment coarseness on local scour at wide bridge piers [PDF]

open access: yes, 2017
Experimental data from a physical model of scouring around a cylindrical wide pier embedded in two types of uniform sediment beds are presented. The effects of sediment sizes and various pier widths on scour development and equilibrium scour depth of ...
Ahmad, Nordila   +4 more
core  

Further development of a multimodal pushover analysis procedure for seismic assessment of bridges [PDF]

open access: yes, 2009
An improvement is first suggested to the modal pushover analysis (MPA) procedure for bridges initially proposed by the writers (Earthquake Engng Struct. Dyn.
Kappos, A. J., Paraskeva, T. S.
core   +1 more source

Damping Modification Factors for Pile–Induced Filtering Effect

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Period–dependent Damping Modification Factors are usually applied to the 5%–damped pseudo–acceleration response spectrum at free field conditions to derive the seismic demand for structures with damping ratio other than 5%. Likewise, the response spectrum at the foundation level of pile–supported structures may differ from the free field ...
Emmanouil Rovithis   +3 more
wiley   +1 more source

Structural Health Monitoring of a Unidirectional Isolation Bridge: Bidirectional Seismic Behavior, Stochastic Model Updating, and Prediction

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Accurate mechanical characterization of civil engineering structures after construction remains challenging due to the unique complexities of each structure, including geometric configurations, imperfect design modeling assumptions, soil conditions, and pervasive uncertainties in actual operational environments. Leveraging actual measurements,
Xinhao He   +7 more
wiley   +1 more source

Local scour at group of bridge piers founded in gravel bed in staggered arrangement

open access: yesResults in Engineering
Local scour around bridge piers is the common cause of undermining of bridge foundation. Many researchers have studied local scour around bridge pier in finer sediment bed.
Akash Anand, Mubeen Beg
doaj   +1 more source

Seismic Response and Damage Analysis of an Isolated Bridge Subjected to Near-Fault Ground Motion

open access: yesApplied Sciences, 2022
In this study, the seismic response and damage behavior of an isolated bridge under near-fault ground motion are studied and compared with the non-isolated bridge.
Ying Gao, Junjie Chen, Liang Zheng
doaj   +1 more source

Evaluation of Some Proposed Methods for Protecting Bridge Substructure Using Physical Models [PDF]

open access: yes, 2003
Bridges constructed across streams with erodable beds are normally subjected to serious scouring during the flood at piers and abutment sites. As a result, scour holes will be formed at the bridge substructure.
Ghazali, Abdul Halim   +6 more
core  

Seismic Design of Concrete Dams: An Integrated Risk‐Informed Performance‐Based (RIPB) Framework

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT This paper advances the integration of risk‐informed principles into the seismic design of dams—a domain long guided by standards‐based, largely deterministic approaches. While performance‐based earthquake engineering is well established for buildings and bridges, its systematic adoption in dam engineering remains limited. We first address two
M. Amin Hariri‐Ardebili, Larry K. Nuss
wiley   +1 more source

Dynamic analysis of debris flow impact on double-column bridge piers based on SPH-FEM coupling

open access: yesShenzhen Daxue xuebao. Ligong ban
Based on the smoothed particle hydrodynamics-finite element method (SPH-FEM), a dynamic interaction model of debris flow, comprising both slurry and boulders as well as impacting a double-column bridge pier, is constructed to study the dynamic response ...
LU Yuchun   +5 more
doaj   +1 more source

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