Three-dimensional Modeling of an Old Masonry Bridge and Assessing Its Current Capacity

Sotoudeh, Saeed; Jahangiri, Meysam; Ranjbarnia, Masoud; Zakeri, Jabbar Ali

doi:10.3311/ppci.14942

Cited by 5 publications

(5 citation statements)

References 16 publications

(18 reference statements)

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“…Additionally, the rotational degrees of freedom on the wheel axles are restricted in both vertical and horizontal directions. Table 2 provides the geometric properties used in the finite element model of a GT26 train [20,[25][26][27]. Fig.…”

Section: Gt26 Train Modelmentioning

confidence: 99%

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Study on a 3D Train-Track-Bridge System Dynamic Behavior Subjected to Over-Height Collision Force

Taghipour,

Zakeri,

Jahangiri

et al. 2024

Period. Polytech. Civil Eng.

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Railway bridges are built to allow trains to cross over highways, valleys, or other transportation infrastructure. In recent years, the number of railway bridges subjected to over-height collision forces has increased. These collisions damage the bridge and affect the safety of the running train. In this investigation, first, a 3D GT26 train-track-bridge interaction model was created to study the effects of collision forces applied to the bridge superstructure and not to the bridge piers as a novelty of this research using the finite element analysis. Then, the dynamic responses of the railway bridge due to the GT26 train load and subjected to over-height collision forces were obtained. Finally, the different sensitivity analyses describe that changing the length of the collision area, the bridge span, and the value of collision forces affect the dynamic responses of the bridge in the contact area. The results show that maximum lateral displacement of the concrete girder in case of assuming the GT26 train 3D model plus over-height collision force is 8.88% less than the case in which considering only freight train axle-load and same over-height collision force apply to the bridge superstructure, and its value reduces from 45 mm to 41 mm. The maximum lateral displacement of the bridge deck is reduced by about 71% by increasing the collision area length from 0.2 m to 1.2 m and at the impact area rises about 43.5% by changing collision speed from 48 km/hr to 144 km/hr as collision force from 7753 kN to 13370 kN.

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Section: Gt26 Train Modelmentioning

confidence: 99%

“…The wheel axles are also connected to the small section of the wheel on top of the rail due to the Hertzian spring to perform the simulation process more precisely and accurately according to Eq. ( 2) [27]:…”

Section: Gt26 Train Modelmentioning

confidence: 99%

Study on a 3D Train-Track-Bridge System Dynamic Behavior Subjected to Over-Height Collision Force

Taghipour,

Zakeri,

Jahangiri

et al. 2024

Period. Polytech. Civil Eng.

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“…2b, after developing an accurate 3D model of the tower, the drawing file has been imported to the DIANA FEA software package (DIANA 2020). In this software, the tower's 3D geometry has been converted to the FEM by considering a homogenized behavior for the masonry units, which is a robust and prevalent method for numerical modeling of the full-scale masonry structures (D'Altri et al 2019, Sotoudeh et al 2020.…”

Section: An Overview Of the Case Studymentioning

confidence: 99%

Structural Model Updating of a Historical Stone Masonry Tower in Tønsberg, Norway

Shabani

Ademi

Kioumarsi

2021

Lecture Notes in Civil Engineering

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Conservation of historical structures plays a pivotal role in every nation, and numerical modeling of historic buildings is an essential part of a conservation methodology. Since deriving the mechanical properties of construction materials using destructive tests is usually not allowed, and most of the cultural heritage assets are so complicated in architecture, numerical modeling of historic buildings is challenging for the analysts. Therefore, in this study, a non-invasive approach for numerical simulation of historic structures has been proposed and applied on a historical stone masonry tower (Slottsfjell tower) in the city of Tønsberg, Norway. Two types of sensors were utilized for finite element modeling of the stone masonry tower. Firstly, three-dimensional (3D) laser scanners were used as a fast and precise tool to provide a finite element model of the case study with and without considering soil-structure interaction. Secondly, operational modal analysis (OMA) was performed using accelerometers to derive the tower's dynamic characteristics. Finally, as a preliminary result of the case study in the context of a European project, the produced finite element models' mechanical properties are updated based on the OMA results, and the effect of considering soil-structure interaction has been investigated.

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“…Direct Current Differential Transducer (DCDT) [2] and Linear Variable Differential Transformer (LVDT) [3] sensors are commonly used in static and dynamic investigation of structures, providing displacement data with a high sampling rate. These sensors offer valuable insights into inherent parameters such as natural frequencies and improve upon the modelling precision through the integration of displacement data and dynamic parameters [4]. However, referencing errors can compromise the data quality if vibrations occur in the vicinity of their reference points.…”

Section: Introductionmentioning

confidence: 99%

Detection of structural targets using ground-based interferometric synthetic aperture radar and augmented reality

Sotoudeh¹,

Uzor²,

Lantini³

et al. 2023

Multimodal Sensing and Artificial Intelligence: Technologies and Applications III

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Structural Health Monitoring (SHM) is critical to ensuring the safety of structures such as bridges, tunnels, and dams. Despite some sensors being highly accurate, it is not always feasible to interrupt the serviceability of the structure for data collection. Within this framework, remote sensing methods such as the Ground-Based Interferometric Synthetic Aperture Radar (GB-SAR) have shown their capability in remotely collecting data of multiple targets simultaneously with a high sampling rate. However, detecting targets in their exact position is currently an area that requires further investigation for this technology.The present research focuses on developing a field investigation methodology to limit uncertainties and raise awareness about the significance of data collected by GB-SAR aided by augmented reality (AR). To this effect, headmounted and mobile AR can support the use of techniques, such as GB-SAR, which work on fundamental geometrical principles, by providing guidance markers in real time for positional and reference information. The integration of both technologies can allow to pre-visualise the optimal position for data collection by aiding to match the structural targets under investigation within the area of interest.The proposed methodology is here implemented in clinical laboratory conditions to investigate the sensor' sensitivity against testing parameters, such as the radar position and the distance to targets. The proposed methodology will contribute to collecting data with a higher accuracy and a lower uncertainty compared to other non-destructive methods utilised in the field. This study demonstrates the potential of using AR to enhance remote sensing methods for SHM and it builds up the foundation for future development into a more comprehensive SHM approach.

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Three-dimensional Modeling of an Old Masonry Bridge and Assessing Its Current Capacity

Cited by 5 publications

References 16 publications

Study on a 3D Train-Track-Bridge System Dynamic Behavior Subjected to Over-Height Collision Force

Study on a 3D Train-Track-Bridge System Dynamic Behavior Subjected to Over-Height Collision Force

Structural Model Updating of a Historical Stone Masonry Tower in Tønsberg, Norway

Detection of structural targets using ground-based interferometric synthetic aperture radar and augmented reality

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