Predictions of Wind-Induced Snow Redistribution on Long-Span Building Roofs Using Two-Way Coupled Simulations

被引:0
作者
Peng, Yongbo [1 ,2 ]
Zhao, Weijie [3 ]
Li, Song [3 ]
Zhou, Jian [4 ]
机构
[1] Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai 200092, Peoples R China
[2] Tongji Univ, Shanghai Inst Disaster Prevent & Relief, Shanghai 200092, Peoples R China
[3] Tongji Univ, Coll Civil Engn, Shanghai 200092, Peoples R China
[4] East China Architectural Design & Res Inst, Shanghai 200002, Peoples R China
基金
国家重点研发计划;
关键词
Wind-induced snowdrift; Two-way coupled simulation; Three-dimensional wind and snow fields; Field observation; Long-span roof structures; NUMERICAL-SIMULATION; SNOWDRIFT; CFD; MODEL; SURFACE; NUMBER; SALTATION;
D O I
10.1061/JCRGEI.CRENG-783
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The numerical simulation of wind-induced snowdrift often employs a one-way coupled scheme that neglects the interaction between moving snow particles and turbulent wind. However, this approach can result in significant errors when the mass concentration of snowdrift near the snow surface is high. To address this issue, a modified two-way coupled scheme for simulating three-dimensional wind-induced snowdrift was developed. This scheme reasonably considers the interaction between snow particles and turbulent wind and introduces a double-loop nested framework. To illustrate the effectiveness of this method, a simulation was conducted for large-scale wind and snow fields on the roof of a terminal building in northwest China. The results were compared with field observation data of snow depth, demonstrating the applicability and superiority of the proposed method. The modified two-way coupled scheme was shown to provide a more accurate simulation of wind-induced snowdrift compared to the one-way coupled scheme. Based on this improved accuracy, predictions of wind-induced snow redistribution on the building roof were made, considering a 100-year return period for wind and snow loads. These predictions are crucial for the safety design of long-span roof structures in cold regions.
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页数:14
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