Three-dimensional modelling for seismic assessment of plain concrete arch bridges

Moazam, Adel Mahmoudi; Hasani, Nemat; Yazdani, Mahmoud

doi:10.1680/jcien.17.00048

Cited by 10 publications

(2 citation statements)

References 31 publications

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“…Furthermore, numerical simulation is a common method used to analyze the mechanical response of structures under various boundary conditions [7,9]. Numerical simulation in light of field investigation data is vitally important for preventing disasters [18], which remains a challenge. In order to overcome the existing problems, a workflow used to evaluate structure stability under the impact of local damage was developed in this study, as demonstrated in Figure 1.…”

Section: Framework For Local Damage Assessmentmentioning

confidence: 99%

Analysis of Local Damages Effect on Mechanical Responses of Underwater Shield Tunnel via Field Testing and Numerical Simulation

et al. 2020

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The investigation of concrete structural performance is crucial to maintain the stability of infrastructure. In order to assess structural stability, this work focuses on the development of an integrated framework to detect damaged conditions in the field and analyze their effect on mechanical performance through nondestructive testing (NDT) technology and numerical models. First, a ground penetrating radar (GPR) and an infrared camera work collaboratively to identify the damaged positions of the concrete structure, with parameters calibrated by laboratory experiments. Then, a finite element model is established to study structural mechanical performance based on field conditions and detected results. In addition, the influenced regions induced by local damage are studied under different boundary conditions. As a case study, the devised method was employed in the Nanjing Yangtze River tunnel for stability assessment and disaster prevention. The detected results of the damaged conditions agree well with the actual conditions in the field. Numerical results show that the circumferential stress component is more significant than that observed longitudinally. The effect of local damage on stress implies a positive correlation with the rise of water pressure, in which the maximum stress response to the variation of water level is 45KPa per meter.

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Section: Framework For Local Damage Assessmentmentioning

confidence: 99%

Analysis of Local Damages Effect on Mechanical Responses of Underwater Shield Tunnel via Field Testing and Numerical Simulation

et al. 2020

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“…Over recent years, non-linear static and dynamic analyses have been performed on 3D FE models as an effective tool for seismic performance assessment of masonry bridges (Ozmen and Sayin, 2018;Zani et al, 2019;Mahmoudi et al, 2018;Yazdani et al, 2019;Bayraktar and Hokelekli, 2021). Non-linear static analysis (NSA) and non-linear dynamic analysis (NDA) have been used to assess seismic performance of masonry structures.…”

Section: Introductionmentioning

confidence: 99%

Seismic assessment of a railway masonry arch bridge using sensor-based model updating

Tajali

Ataei

Miri

et al. 2022

Proceedings of the Institution of Civil Engineers - Bridge Engi

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A large part of Iranian railway bridge asset comprises masonry arch bridges, which have been in service for over 70 years. Seismic assessment of such structures is of great importance, particularly for high-seismic regions. Hence, this study assesses the seismic performance of Veresk masonry arch bridge, the longest masonry arch bridge of Iranian railway network (a span length of 99 m), spanned over a valley of depth 110 m, through a reliable sensor-based model updating. Dynamic tests are carried out using a test train, composed of 6-axle locomotives and 4-axle freight wagons, which travels across the bridge, and subsequently, vibration response of the instrumented bridge is measured. A high-fidelity 3D Finite Element (FE) model of the bridge is developed and updated using the measured vibration characteristics: mid-span displacements and natural frequencies. Finally, the seismic performance assessment of the bridge is performed through non-linear static and dynamic analyses for two seismic hazard levels with return periods of 150 and 1000 years. It is found that for the hazard level with a return period of 150 years, both nonlinear static and dynamic analyses give very similar results. However, for the seismic hazard level with the return period of 1000 years, the results of the static analysis are more conservative.

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The probabilistic seismic assessment of aged concrete arch bridges: The role of soil-structure interaction

Homaei

Yazdani

2020

Structures

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Three-dimensional modelling for seismic assessment of plain concrete arch bridges

Cited by 10 publications

References 31 publications

Analysis of Local Damages Effect on Mechanical Responses of Underwater Shield Tunnel via Field Testing and Numerical Simulation

Analysis of Local Damages Effect on Mechanical Responses of Underwater Shield Tunnel via Field Testing and Numerical Simulation

Seismic assessment of a railway masonry arch bridge using sensor-based model updating

The probabilistic seismic assessment of aged concrete arch bridges: The role of soil-structure interaction

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