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Meteorological station distribution map in the Beijing-Tianjin-Hebei region. The present map was done by using ArcGIS 10.0 desktop version (https ://www.esri.com/zh-cn/arcgi s/produ cts/arcgi s-pro/overv iew).
Source publication
In the current design specification of building structure, the basic wind pressure and basic snow pressure are two independent values, and it is impossible to acquire both of these values when snow and wind occur at the same time. Taking parameters such as snowfall intensity, snowfall amount, wind speed, and wind direction as indicators, the value...
Context in source publication
Context 1
... location and number of the 26 stations are shown in Fig. 1. The selected time period was from 1968 to 2016 and included a total of 5893 days. During this period, due to force majeure, there was a lack of observation data for a portion of the time. However, the number of missing days at some sites was very small. The biggest lost count was 58 at station 54618. For this situation, the missing ...
Citations
... The results of this approach can be used to construct the joint wind-snow hazard level contours corresponding to different annual exceedance probabilities. Yu et al. (2021) analyzed the temporal and spatial distribution of wind and snow in the Xinjiang Uygur Autonomous Region by using the Daily Data Sets of Climate Data for China International Surface Exchange Station (V3.0) and obtained the probability of occurrence of snow drifting disaster and the disaster grade. However, the disaster in the region of the Xinjiang Uygur Autonomous Region, suffering severe snow drifting disaster in China, is not analyzed. ...
At present, the wind and snow loads are calculated independently when determining the design specifications for building structures. Yet, when snow drifting occurs, the basic wind and snow pressures exist almost simultaneously. Therefore, building specifications based on the independent calculations of the wind and snow loads cannot be used effectively in areas that are severely impacted by snow drifting. Some parts of the Xinjiang Uygur Autonomous Region of China have suffered particularly severe snow drifting natural disasters. In this paper, we offer an analysis of the statistical characteristics of the spatial distribution of wind and snow in this region. In particular, we extract the values of the combined distribution of the wind and snowfall in the Xinjiang Uygur Autonomous Region of China by using parameters such as snowfall intensity, snowfall amount, wind speed, and wind direction as indicators that show the snow drifting disasters. This study found that, after heavy snowfall events, the accumulative wind scale is high and the accumulative snowfall is large in the Altay, the Bortala Mongol Autonomous, and the Tacheng Prefectures of northern Xinjiang, and the Kizilsu Kirghiz Autonomous Prefecture of western Xinjiang. It has an important practical significance for the design of building structures and the treatment of snow drifting disasters.
The meteorological conditions determine snow evolutions on and around buildings. Those climatic impacts have been independently considered in the current design codes of buildings, namely the wind pressure and the snow load. But snow load estimates are only based on precipitation assessments without considering the joint effect of wind and snow precipitation which lead to wind dominated deposition and snow transport. Thus, the statistics-based data provided by those building codes seem practically inadequate or at least incomplete. Using the data provided by upper-air and ground meteorological stations in northern China, including snowfall, wind velocity, and temperature, as indicators, we propose a series of statistical relationships covering aspects of snow precipitation and snow drifting. For those meteorological indicators that can affect building snow evolutions, more detailed analyses on their spatial and temporal changes have been achieved. The regionalization of snow precipitation features in northern China has also been proposed based on the clustering analysis on meteorological joint effects. The result shows that the snowfall in most northern regions of China is generally not heavy and in the form of a uniform deposition. The wind dominated depositions around buildings are more likely to appear in the regions around the Bohai Sea.
