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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