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(1 桂林理工大學(xué)土木與建筑學(xué)院， 桂林 541004； 2 廣西土力學(xué)與工程重點(diǎn)實(shí)驗(yàn)室， 桂林 541004；3 桂林理工大學(xué)有色金屬礦產(chǎn)勘查與資源高效利用協(xié)同創(chuàng)新中心， 桂林 541004)

［摘要］以吉林新火車站為研究對(duì)象，在流體計(jì)算軟件FLUENT 6.3基礎(chǔ)上編寫相應(yīng)的UDF后處理程序?；贓uler-Euler體系的兩相流理論，采用FLUENT和UDF后處理程序?qū)中禄疖囌局車娘L(fēng)雪運(yùn)動(dòng)進(jìn)行了全尺度的數(shù)值模擬,得到了不同風(fēng)速、風(fēng)向下屋蓋表面風(fēng)致雪壓的不均勻分布情況。結(jié)果表明：在風(fēng)、雪作用后，屋蓋以及雨棚上的雪壓分布會(huì)發(fā)生改變，雪壓分布非均勻；不同風(fēng)向下，積雪分布系數(shù)的最大值集中在站臺(tái)雨棚鄰近主站房的區(qū)域；積雪漂移沉積效應(yīng)主要受風(fēng)速影響，風(fēng)速較大的區(qū)域積雪的侵蝕越明顯，在風(fēng)速小的區(qū)域積雪沉積量也較大。 

［關(guān)鍵詞］大跨度屋蓋；數(shù)值模擬；兩相流理論；雪漂移；風(fēng)致積雪分布 

中圖分類號(hào)：TU312+.1 文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)15-0107-08

Numerical simulation of wind-induced snow redistribution on large-span roof 

LU  Chunling1,2,3,  CHEN  Jinkun1,  LIU  Yujie1 

(1 College of Civil and Architecture Engineering, Guilin University of Technology, Guilin 541004， China； 2 Guangxi Key Laboratory of Rock-soil Mechanics and Engineering, Guilin 541004， China； 3 Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources, Guilin University of Technology, Guilin 541004， China) 

Abstract: Taking Jilin New Railway Station as the research object, the corresponding UDF post-processing program was compiled based on the fluid calculation software FLUENT 6.3. Based on the two-phase flow theory of Euler-Euler system, FLUENT and UDF post-processing programs were used to carry out a full-scale numerical simulation of the wind and snow movement around Jilin New Railway Station. The uneven distribution of wind-induced snow pressure on the roof surface with different wind speeds and wind directions was obtained. The results show that after the action of wind and snow, the snow pressure distribution on the roof and the canopy will change, and the snow pressure distribution will be non-uniform. Under different winds, the maximum value of the snow distribution coefficient is concentrated in the area of platform canopy near the main station building. Deposition effect of snow drift is mainly affected by wind speed. The erosion of snow in areas with higher wind speed is more obvious, and the amount of snow deposition in areas with lower wind speed is also larger. 

Keywords:large-span roof； numerical simulation； two-phase flow theory； snow drifting； wind-induced snow distribution

*國(guó)家自然科學(xué)基金項(xiàng)目（51568015），廣西創(chuàng)新驅(qū)動(dòng)發(fā)展專項(xiàng)（桂科AA20302006）。

 作者簡(jiǎn)介：盧春玲，博士，教授，Email:277342007@qq.com。