Advances in Bridge Engineering
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Identification of modal parameters of long-span bridges under various wind velocities
Advances in Bridge Engineering - Tập 3 - Trang 1-21 - 2022
The modal parameters identification of bridges under non-stationary
environmental excitation has caught the attention of researchers. This paper
studies the non-stationarity of wind velocity, and extracts the time-varying
mean wind velocity based on a discrete wavelet transform and recursive
quantitative analysis. The calculated turbulence intensity and turbulence
integral scale under the non-stat...
Effect of structural repairs on the load rating and reliability of a prestressed concrete bridge
Advances in Bridge Engineering - Tập 4 - Trang 1-34 - 2023
Prestressed girders often deteriorate over time due to environmental and
man-made stressors, lowering the strength and serviceability of bridge
structures. Although structural repairs are implemented to improve the load
carrying capacity of the structure, the presence of numerous unknowns leads to
high uncertainty in estimating the adequacy of repairs. For instance, the
cross-section of the remain...
Seismic cracking mechanism and control for pre-stressed concrete box girders of continuous rigid-frame bridges: Miaoziping bridge in Wenchuan earthquake as an example
Advances in Bridge Engineering - Tập 2 - Trang 1-25 - 2021
The box girder of the Miaoziping Bridge, a three-span prestressed concrete
continuous rigid-frame bridge, suffered a serious crack in its box section’s web
near the 1/6 to 1/2 length of the side span and the middle-span length of 1/4 to
3/4, as a result of the 2008 Wenchuan earthquake, which also caused large
lateral residual displacements at both ends of the side span. In this study,
eight strong...
Deformation monitoring and analysis of a long-span cable-stayed bridge during strong typhoons
Advances in Bridge Engineering - Tập 1 - Trang 1-19 - 2020
Deformation monitoring of the girders and towers during strong winds or typhoons
is vitally important for serviceability and safety assessment of in-service
long-span bridges. Although some field measurements were carried out, our
understanding on the features of the bridge deformation during high-speed winds
is still limited; therefore, more monitoring-based studies are still required.
In this st...
Entire mechanical analysis of prestressed CFRP strengthened RC beams under different prestressed introduced methods
Advances in Bridge Engineering - - 2024
In order to clarify the effect of mechanical tensioning and SMA wire heating
recovery on introducing prestress into CFRP sheet strengthened reinforced
concrete (RC) beams, an experimental research on the bending performance of
prestressed CFRP sheet strengthened RC beams was conducted. Based on the test
results, a bending carrying capacity model for RC beams externally strengthened
with prestresse...
Aerodynamic loads and bridge responses under train passage: case study of an overpass steel box-girder cable-stayed bridge
Advances in Bridge Engineering - Tập 3 - Trang 1-25 - 2022
Increased train speeds have led to significant train-induced wind problems. This
paper describes a numerical study of the aerodynamic loads produced when a train
passes under a bridge and the bridge dynamic response based on a steel
box-girder cable-stayed bridge. The results indicate that the wind pressure on
the bottom plate and the maximum lift on the beam sections increase as the train
speed i...
A yield curvature model considering axial compression ratio
Advances in Bridge Engineering - Tập 4 - Trang 1-20 - 2023
This study proposed a yield curvature prediction model considering axial
compression ratio with exponential function which is improved on the basis of
the specification effective yield curvature prediction model. Parametric
moment–curvature curves approach was used to verify that the yield curvature is
greatly affected by the section size, the yield strength of longitudinal steel
bar and the axial...
Investigation of the performance of grouted couplers in vehicle impacted reinforced concrete ABC bridge piers
Advances in Bridge Engineering - Tập 3 Số 1 - Trang 1-30 - 2022
Increased dynamic impact on bridge piers caused by seismic events, blasts, and
vehicular impact have become increasingly common. Recent research efforts
indicate that code provisions for designing reinforced concrete members to
withstand such dynamic loads are inadequate and need additional insights for
this purpose. Numerous works have been undertaken to investigate reinforced
concrete (RC) tradi...
Adding ceramic polishing waste as filler to reduce paste volume and improve carbonation and water resistances of mortar
Advances in Bridge Engineering - Tập 2 - Trang 1-19 - 2021
The use of ceramic waste in concrete/mortar production as aggregate replacement
or cement replacement has been under consideration in the last decade to find an
effective way to tackle the growing hazard of ceramic waste disposal. In this
study, the authors reutilize ceramic polishing waste (CPW) as a filler to
replace an equal volume of cement paste in mortar while keeping the mixture
proportions...
Vibration response analysis of footbridge based on pedestrian perception
Advances in Bridge Engineering - Tập 4 - Trang 1-27 - 2023
This article aims to study the influence of random crowd loading on the
perceived vibration response of pedestrians. Firstly, a vertical vibration
response analysis method considering pedestrian perception was established based
on the random crowd walking model. Secondly, change rules of maximum vibration
response of pedestrians, occurrence time and position interval under different
random walk mo...
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