Global‐local fatigue assessment of an ancient riveted metallic bridge based on submodelling of the critical detail

Liu, Zhongxiang; Correia, José A.F.O.; Carvalho, Hermes; Mourão, António; Jesus, Abílio M.P. De; Calçada, Rui; Berto, Filippo

doi:10.1111/ffe.12930

Cited by 46 publications

(13 citation statements)

References 38 publications

(68 reference statements)

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“…For a long time-frame measurement, the system can perform a measurement in every few hours for the same target and record the changes of the target over the time-frame of months or years. Within such durations, the measured results can be used to analyze the performance of the transportation infrastructure under different weather conditions [ 30 , 31 ], the change in the external profile induced by internal stress [ 32 , 33 ], and the anti-fatigue performance [ 34 , 35 ].…”

Section: Applications In Transportation Infrastructure Measurementmentioning

confidence: 99%

Three-Dimensional Microscopic Image Reconstruction Based on Structured Light Illumination

Shi

Yang

Zhu

et al. 2021

Sensors

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In this paper, we propose and experimentally demonstrate a three-dimensional (3D) microscopic system that reconstructs a 3D image based on structured light illumination. The spatial pattern of the structured light changes according to the profile of the object, and by measuring the change, a 3D image of the object is reconstructed. The structured light is generated with a digital micro-mirror device (DMD), which controls the structured light pattern to change in a kHz rate and enables the system to record the 3D information in real time. The working distance of the imaging system is 9 cm at a resolution of 20 μm. The resolution, working distance, and real-time 3D imaging enable the system to be applied in bridge and road crack examinations, and structure fault detection of transportation infrastructures.

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Section: Applications In Transportation Infrastructure Measurementmentioning

confidence: 99%

Three-Dimensional Microscopic Image Reconstruction Based on Structured Light Illumination

Shi

Yang

Zhu

et al. 2021

Sensors

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“…The finite element model is created by combining the detailled modelling of several sub-systems, [15].…”

Section: Cycles Counting Based On Bwim Datamentioning

confidence: 99%

Fatigue analysis of a bridge deck using the peaks-over-threshold approach with application to the Millau viaduct

Nesterova¹,

Schmidt²,

Soize³

2020

SN Appl. Sci.

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Usually, to estimate the fatigue life of structural details in existing bridges, fatigue damage assessed with monitoring data is extrapolated linearly in time. In this study, a methodology is proposed for predicting the numbers of fatigue cycles with the peaks-over-threshold approach. On the other side, this POT approach, which is based on extreme values, is, as usually, also used to predict the load effects of extreme amplitude. This provides an innovative method to predict fatigue damage, which considers the initial distribution of numbers of cycles over time. It may account for traffic growth in volume and mass. This paper shows the comparison between reliability indexes assessed with the proposed method and the linear extrapolation.

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“…The preload force in the bolts obtained after applying the calculated temperature is lower than F s.Rd . Therefore, the temperature must be calibrated (Liu et al , 2019). Table V presents the temperatures that were calculated and calibrated, and the corresponding preloading forces for B90 case.…”

Section: Finite Element Model Of the Jointmentioning

confidence: 99%

Alternative steel lattice structures for wind energy converters

Jovašević

Correia

Pavlović

et al. 2019

IJSI

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Purpose In the last decades, the demand and use of renewable energies have been increasing. The increase in renewable energies, particularly wind energy, leads to the development and innovation of powerful wind energy converters as well as increased production requirements. Hence, a higher supporting structure is required to achieve higher wind speed with less turbulence. To date, the onshore wind towers with tubular connections are the most used. The maximum diameter of this type of tower is limited by transportation logistics. The purpose of this paper is to propose an alternative wind turbine lattice structure based on half-pipe steel connections. Design/methodology/approach In this study, a new concept of steel hybrid tower has been proposed. The focus of this work is the development of a lattice structure. Therefore, the geometry of the lattice part of the tower is assessed to decrease the number of joints and bolts. The sections used in the lattice structure are constructed in a polygonal shape. The elements are obtained by cold forming and bolted along the length. The members are connected by gusset plates and preloaded bolts. A numerical investigation of joints is carried out using the finite element (FE) software ABAQUS. Findings Based on the proposed study, the six “legs” solution with K braces under 45° angle and height/spread ratio of 4/1 and 5/1 provides the most suitable balance between the weight of the supporting structure, number of bolts in joints and reaction forces in the foundations, when compared with four “legs” solution. Originality/value In this investigation, the failure modes of elements and joints of an alternative wind turbine lattice structures, as well as the rotation stiffness of the joints, are determined. The FE results show good agreement with the analytical calculation proposed by EC3-1-8 standard.

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Global‐local fatigue assessment of an ancient riveted metallic bridge based on submodelling of the critical detail

Cited by 46 publications

References 38 publications

Three-Dimensional Microscopic Image Reconstruction Based on Structured Light Illumination

Three-Dimensional Microscopic Image Reconstruction Based on Structured Light Illumination

Fatigue analysis of a bridge deck using the peaks-over-threshold approach with application to the Millau viaduct

Alternative steel lattice structures for wind energy converters

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