Exploring the failure mechanism of light poles on elevated bridges under high winds

Chen, Yanlin; Wang, Xiangjie; Sun, Chao; Zhu, Benrui

doi:10.1016/j.engfailanal.2024.108076

Engineering Failure Analysis

2024

DOI: 10.1016/j.engfailanal.2024.108076

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Exploring the failure mechanism of light poles on elevated bridges under high winds

Yanlin Chen,

Xiangjie Wang,

Chao Sun

et al.

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2024

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Cited by 3 publications

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Review of OpenFOAM applications in the computational wind engineering: from wind environment to wind structural engineering

Ricci

2024

Meccanica

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The use of computational fluid dynamics (CFD) in the wind engineering (WE) is generally defined as computational wind engineering (CWE). Since its foundation in 2004, the use of OpenFOAM in CWE has been increasing progressively and covers nowadays a wide range of topics, from wind environment to wind structural engineering. This paper was drafted in response to the invitation from the organizers of the 18th OpenFOAM workshop held in Genoa (Italy) on 11–14 July 2023, when a technical session on Civil Engineering and Wind Engineering was organized. In this paper the author briefly reviews the history of WE and surveys the evolution, methods, and future challenges of OpenFOAM in the CWE. Topics are here regrouped into three main research areas and discussed from a physical, engineering and purely computational perspective. The study does not cover the Wind Energy and related topics, since this can be considered nowadays as a stand-alone subfield of the WE. This review confirms that OpenFOAM is a versatile tool widely used for WE applications that often require new models to be developed ad hoc by CFD users. It can be coupled easily with numerical weather prediction models for mesoscale-microscale wind and thermal studies, with building energy simulation models to determine the energy demand, with finite element method for structural engineering design. OpenFOAM represents an extraordinary opportunity for all CFD users worldwide to share codes and case studies, to explore the potential of new functionalities and strengthen the network within the CFD community.

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Review of OpenFOAM applications in the computational wind engineering: from wind environment to wind structural engineering

Ricci

2024

Meccanica

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Comparing methods for reducing artificial pressure fluctuations using large eddy simulation in high-rise building wind load assessment

Chen,

Li,

Wang

et al. 2024

Physics of Fluids

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Reducing artificial pressure fluctuations (RAPF) is one of the key challenges in simulating atmospheric boundary layer turbulence. This study, based on the synthetic turbulence method, compares the performance of three RAPF methods: inlet mass correction (IMC), divergence-free correction (DFC), and local pressure correction (LPC). First, large eddy simulations of an empty domain show that the IMC and DFC methods effectively suppress unrealistic pressure fluctuations throughout the flow field. As the turbulence develops downstream, the pressure fluctuations decay rapidly and become almost insignificant. Conversely, the LPC method only reduces local nonphysical pressure fluctuations by adjusting the pressure reference location, but as the distance from the reference point increases, the pressure fluctuations gradually increase. Moreover, the IMC and DFC methods adjust the initial turbulent field to meet inlet mass balance or divergence-free conditions, which results in changes to the initial turbulence characteristics. However, the LPC method avoids modifying the initial turbulence, allowing it to better maintain the original turbulence properties. Finally, the simulations for wind loads on the high-rise building indicate that the application of the IMC, DFC, and LPC methods results in reasonable mean, standard deviation and peak values of pressures on the building surfaces, as well as accurate calculations of the integrated base forces and moments.

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Study on the Impact of Deep Foundation Pit Construction on Nearby Elevated Structures—Case Study

Huang,

Yan,

Guo

et al. 2024

Buildings

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Urbanization and population concentration in China’s major cities drive high land utilization demands, affecting nearby bridges during underground construction. Foundation pit construction alters the internal forces, deformation, and displacement of bridge piles. To understand these impacts and assess excavation support rationality, a case study was conducted on an ultra-deep foundation pit near an elevated ring road bridge in Wuhan. Considering the engineering geological conditions of the project site, construction sequence, and traffic load on the bridge, a three-dimensional finite element model was established to simulate the impact of foundation pit excavation on the elevated structure. And through an analysis of tracked monitoring data from the construction site, comparisons were also made with the simulation results. The findings of this case study indicated that throughout the entire construction phase of the foundation pit, the maximum horizontal and vertical displacements of the bridge foundation structure caused by the construction are 2.98 mm and −1.75 mm, respectively; the maximum change rate of the bending moment in the bridge structure due to the foundation pit construction is 6.3%, while the change in the axial forces is small, and completely within the safety control standards for bridge structure displacement. By analyzing the monitoring data over three stages within one year after the completion of the foundation pit, it is shown that the bridge structure gradually tends to stabilize. Additionally, due to soil consolidation, its displacement shows uniform rebound and tends to stabilize. The research findings provide valuable reference points for the design and construction of similar deep foundation pit projects.

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Exploring the failure mechanism of light poles on elevated bridges under high winds

Cited by 3 publications

References 14 publications

Review of OpenFOAM applications in the computational wind engineering: from wind environment to wind structural engineering

Review of OpenFOAM applications in the computational wind engineering: from wind environment to wind structural engineering

Comparing methods for reducing artificial pressure fluctuations using large eddy simulation in high-rise building wind load assessment

Study on the Impact of Deep Foundation Pit Construction on Nearby Elevated Structures—Case Study

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