大跨度空间结构风雪流荷载模拟方法研究  

STUDY ON THE SIMULATION METHOD OF WIND AND SNOW FLOW LOAD ON LARGE-SPAN SPATIAL STRUCTURES

作　　者：苏政忠 李方慧[1] 袁中亚 张特 贾美微 于淼 SU Zhengzhong;LI Fanghui;YUAN Zhongya;ZHANG Te;JIAMeiwei;YU Miao(School of Civil Engineering,Heilongjiang University,Harbin 150086,China)

机构地区：[1]黑龙江大学建筑工程学院,哈尔滨150086

出　　处：《低温建筑技术》2023年第8期47-50,55,共5页Low Temperature Architecture Technology

摘　　要：为研究大跨度空间结构受风雪流荷载灾害影响,以两相流为理论基础,对通用流体软件FLUENT进行二次开发,编写风雪两相流数值模拟中的复杂边界条件及材料参数,大跨度钢结构为分析对象建立数值模型。并与风洞试验对比吻合的基础上,分析风雪流荷载对不同拱高的单层柱面网壳表面雪压分布影响,通过分析风场数据,以及在风场影响下的建筑物周边雪浓度数据。探究风雪两相耦合作用下对大跨单层柱面网壳的表面积雪分布状态。发现较低拱高的大跨单层网壳结构屋面,将面临更严峻的雪荷载威胁。Based on the two-phase flow theory,this study developed the general fluid software FLUENT for the second time.The numerical model of a large-span steel structure is established,compiling the complex boundary conditions and material parameters in the numerical simulation of wind and snow two-phase flow.Based on the comparison with wind tunnel test,the influence of wind and snow flow load on the snow pressure distribution on the surface of single-layer cylindrical latticed shells with different arch heights is analyzed.The wind field data and the snow concentration data around the buildings under the influence of the wind field are analyzed.The distribution of snow on the surface of large-span single-layer cylindrical latticed shells under the coupling of wind and snow is investigated.It is found that the large-span single-layer reticulated shell roof with lower arch height faces the most severe threat of snow loading.

关 键 词：大跨空间结构 风雪流荷载 单层柱面网壳 

分 类 号：TU312[建筑科学—结构工程]