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Uncertainty of Local Scouring Parameters Around Bridge Piers
local scour bridge pier reliability uncertainty
2009/10/13
Reliability-based assessment of local scouring mechanism around bridge piers provides information for decision-making regarding the pier footing design. Parameter uncertainties that may arise from var...
Dynamic Reliability in Bridge Pier Scouring
Dynamic reliability Bridge pier Scour Return period Service life Safety factor
2009/10/12
Many bridges crossing wide rivers fail due to excessive local scour around piers and abutments during heavy floods. Because of the random nature and complexity of the overall scouring phenomenon throu...
A Reliability Model for Bridge Abutment Scour
Reliability Bridge Abutment Scour Resistance Loading Safety factor Return period
2009/10/12
Deterministic scour prediction equations for bridge abutments consider only the e ects of hydraulic parameters and do not take the uncertainties of scouring parameters into account. Treatment of these...
MECHANISM OF DAMAGE TO SHIWEI BRIDGE CAUSED BY 1999 CHI-CHI EARTHQUAKE
Chi-Chi Earthquake failure of structure concrete pier earthquake damage
2009/1/6
The Shiwei Bridge in Taiwan was extensively investigated in order to determine the reasons for its failure during the 1999 Chi-Chi Earthquake. Our field investigation revealed no evidence of horizont...
INELASTIC SEISMIC RESPONSE OF BRIDGE PILES: EFFECTS OF SUPERSTRUCTURE PROPERTIES AND SOIL LAYERING
soil-pile interaction nonlinear behavior layered soil vertical excitation
2009/1/5
This paper has dealt with the nonlinear behavior of pile-supported bridge during earthquake motions. The formulation takes the FEM-BEM technique; the FEM for the near structure zone while the BEM for...
QUANTITATIVE ANALYSIS ON DETERIORATION AND REMAINING LIFE OF STEEL BRIDGE PAINTING BASED ON FIELD DATA
steel bridge paint film deterioration ratio image processing system
2009/1/4
With the results of field investigations and outdoor exposure experiments of painted specimens, time-lapse deterioration of paintings was statistically analyzed by using “Automatic Evaluation System ...
SEISMIC PERFORMANCE OF SLIDING ISOLATION BEARINGS DURING VERTICAL MOVEMENT OF BRIDGE GIRDERS
sliding bearings friction coefficient impact tests uplift PTFE
2008/12/25
The behavior of sliding isolation bearings with respect to vertical movement due to earthquake excitation is investigated through experiments and simulations. Bridge girders may undergo vertical moti...
DYNAMIC RESPONSE ANALYSES AND MODEL VIBRATION TESTS ON SEISMIC ISOLATING FOUNDATION OF BRIDGE PIER
bridge pier dynamic response analysis model vibration test seismic isolating foundation sliding rocking lift-off
2008/12/23
In this study, the oscillation behavior and the aseismicity of bridge piers with isolating foundations are investigated. An isolating foundation is formed by installing isolation materials such as sa...
RESPONSE CHARACTERISTICS OF BRIDGE ABUTMENTS SUBJECTED TO COLLISION OF GIRDER DURING AN EARTHQUAKE
seismic design girder abutment collision
2008/12/22
In a bridge which is equipped with a rubber bearing support and undergoes relatively large displacement of its girders during an earthquake, the girder and abutment collide in the case that the expan...
EFFECTIVENESS OF SEISMIC DISPLACEMENT RESPONSE CONTROL FOR NONLINEAR ISO-LATED BRIDGE
nonlinear isolated bridge active control passive control saturation
2008/12/22
The effectiveness of seismic displacement response control for isolated bridges, which behave nonlinearly at both the columns and the isolators, is studied using the LQR optimal active control. A typ...
DEVELOPMENT OF AN EARTHQUAKE DAMAGE EVALUATION METHOD FOR BRIDGE STRUCTURES USING ACCELERATION SENSORS
damage evaluation reinforced concrete column shaking table test
2008/12/17
After an extreme earthquake, evaluation of damage and operability of bridge structures is currently done based on visual inspection by bridge experts, and there is a need to develop sensing technolog...