CFD simulations can be adequate for the evaluation of snow effects on structures

Tominaga, Yoshihide; Stathopoulos, T.

doi:10.1007/s12273-020-0643-0

Cited by 16 publications

(3 citation statements)

References 64 publications

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“…ArcGIS, ERA5, and field survey data were combined to reveal the study area's geographical location and wind and snow conditions. The data obtained from the study area, including snow density, grain size, wind frequency, wind speed, and other data, were used for numerical simulation (Tominaga and Stathopoulos, 2020). The erosion-accumulation model was used to compare the embankment and the cutting.…”

Section: Discussionmentioning

confidence: 99%

Characteristics of snow cover distribution along railway subgrade and the protective effect of snow fences

Lei,

Cheng,

Gao

et al. 2023

J. Arid Land

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Railways built in cold, snowy, and lightly populated areas are subjected to wind and snow disasters. In this study, we selected a snow hazard prevention and control section of the Altay-Zhundong Railway in Xinjiang Uygur Autonomous Region of China as the research object. We investigated the deposited snowfall variation characteristics on the two sides and in the embankment pavement area of snow fences with different porosities, fence heights, and arrangement distances using single-factor tests and orthogonal tests based on global atmospheric reanalysis climate data, field survey data, and a multi-phase flow analysis model. The results showed significant differences in the characteristics of snow cover distribution and snow cover thickness between the embankment and the cutting in the absence of snow protection measures. The maximum snow cover thickness of the embankment pavement decreased by 12.6% relative to the cutting pavement. The snow cover thickness of the embankment exhibited an increasing trend from windward shoulder to leeward shoulder, whereas the snow cover thickness of the cutting presented a declining trend from windward shoulder to leeward toe. In the collaborative prevention and control of snow fences and embankments, the three factors can be ranked in terms of their sensitivity to deposited snowfall within the influence scope of snow fences as follows: fence height>arrangement distance>porosity. At the same time, fence height yielded a significant relationship for the influence scope of snow fences (P<0.05). The three factors can also be ranked in terms of their sensitivity to deposited snowfall on the pavement as follows: porosity>fence height>arrangement distance. For the embankment protection of the Altay-Zhundong Railway against wind and snow, snow fence with a porosity of 75%, a fence height of 4.8 m, and an arrangement distance from the embankment of 60 m produced the best snow control effect. By revealing the characteristics of snow cover distribution along railway subgrade and the protective effect of snow fences, this study provides valuable references for the engineering applications of railway construction in areas prone to wind and snow disasters.

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Section: Discussionmentioning

confidence: 99%

Characteristics of snow cover distribution along railway subgrade and the protective effect of snow fences

Lei,

Cheng,

Gao

et al. 2023

J. Arid Land

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“…Notwithstanding the exceptional structural performance, it is worth noting that large-span spatial roofs may experience significant structural damage when subjected to certain seismic events, wind loads, and fluctuations in temperature [1]. To avoid the damage, a careful assessment of the structural load [2][3][4], and a precise numerical analysis of the structural mechanical performance [5][6][7] of large-span spatial structures have been conducted, and new technologies, including seismic isolation for domes and lattices, have been developed to meet diverse and demanding design needs [8][9][10]. The distinctive structural configurations of large-span spatial structures are marked by the abundance of natural frequencies and threedimensional vibration modal shapes under seismic loading.…”

Section: Introductionmentioning

confidence: 99%

Ground-Motion Intensity Measures for the Seismic Response of the Roof-Isolated Large-Span Structure

Zhen,

Qiu,

Zhang

et al. 2024

Buildings

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Ground-motion intensity measures (IMs), which quantify and describe the characteristics of earthquake ground motion, are of utmost importance in the assessment of seismic risk and the design of resilient structures with large spans. The appropriate selection of a ground-motion IM is crucial in establishing a reliable and robust correlation between seismic hazards and structural demands. The current study presents a novel ground-motion IM that incorporates the influence of multiple vibration modes and period elongation resulting from isolation based on the velocity spectrum. A comprehensive study has been conducted to examine the efficiency of 37 different ground-motion IMs on a roof-isolated large-span structure with engineering demand parameters (EDPs), using far-field ground-motion data. The initial examination of the proposed intensity measure involves a planar lumped-mass model. Subsequently, a numerical model of a large-span roof-isolated structure, specifically the Beijing Workers’ Stadium, is constructed and examined. The results suggest that the proposed intensity measure (IM) demonstrates satisfactory adequacy and achieves optimal efficiency when considering three different engineering demand parameters among 37 other ground-motion intensity measures.

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“…Compared to the high-computational-cost approach LES simulations, Reynolds-averaged Navier-Stokes (RANS) simulations are proved to be adequate in many application fields in building simulations, including indoor airflow if mean values of variables are of concern [2,4,[82][83][84][85][86][87]. To the best knowledge of the authors, an extensive evaluation of inlet boundary conditions with detailed measurement data at the inlet that includes Reynolds stress components is scarce.…”

Section: Introductionmentioning

confidence: 99%

Influence of inlet boundary conditions on 3D steady RANS simulations of non-isothermal mechanical ventilation in a generic closure

Kang

Hooff

2022

International Journal of Thermal Sciences

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CFD simulations can be adequate for the evaluation of snow effects on structures

Cited by 16 publications

References 64 publications

Characteristics of snow cover distribution along railway subgrade and the protective effect of snow fences

Characteristics of snow cover distribution along railway subgrade and the protective effect of snow fences

Ground-Motion Intensity Measures for the Seismic Response of the Roof-Isolated Large-Span Structure

Influence of inlet boundary conditions on 3D steady RANS simulations of non-isothermal mechanical ventilation in a generic closure

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