拱形屋面风致积雪分析

张冰; 张延年; 蒋坤

doi:10.13204/j.gyjzG20122210

拱形屋面风致积雪分析

doi: 10.13204/j.gyjzG20122210

张冰¹,
张延年^1,2,
蒋坤²

1. 吉林建筑科技学院土木工程学院, 长春 130114;
2. 沈阳建筑大学土木工程学院, 沈阳 110168

详细信息

作者简介:
张冰,女,1971年出生,高级工程师。电子信箱:760981581@qq.com

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- 文章访问数: 89
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出版历程
- 收稿日期: 2020-12-22
- 网络出版日期: 2022-04-24

Analysis of Wind-induced Snow Cover on Arched Roof

1. School of Civil Engineering, Jilin University of Architecture and Technology, Changchun 130114, China;
2. School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

摘要

摘要: 为掌握拱形屋面积雪分布情况，降低其风雪灾害，通过对积雪现场进行调查，根据积雪实际分布与灾害情况，利用Fluent软件，建立拱形屋面的风致积雪分析模型，考虑空气相相对速度、空气相速度、空气相相对角速度、雪密度等影响因素，模拟拱形屋面风致积雪分布。通过分析，找出影响屋面积雪沉积的主要因素，建立风雪效用湍流模型，进而对拱形屋面积雪产生的压强统计数据开展详细分析，提出拱形屋面积雪不均匀分布系数取值的建议，以弥补我国现行规范对积雪均匀分布系数取值考虑较充分，对不均匀分布系数取值考虑不足的情况。
- 拱形屋面 /
- 屋面积雪分布系数 /
- Fluent /
- 风致积雪分析模型 /
- 不均匀分布系数
Abstract: In order to determine snow cover distribution exactly, reduce the snow and wind disasters, the field survey of snow cover distribution of building was carried out. By using the software Fluent, the numerical models of wind-induced snow cover on arched roof were set up considering air-phase relative velocity, air-phase velocity, air-phase relative angular velocity, snow density and other factors to simulate the distribution of wind-induced snow cover on arched roof. By analyzing the data, the main factors affecting the snow cover distribution on the roof were found out, the turbulence model of wind and snow effect was established, and the statistical data of the pressure generated by the snow cover on the arched roof was analyzed in detail, and suggestion of the value of the uneven distribution coefficient of the snow cover on the arched roof was proposed, in order to make up for the situation that the current norms in China have more adequate consideration for the value of the uniform distribution coefficient of snow cover, but inadequate consideration for the value of the uneven distribution coefficient.
- arched roof /
- snow cover distribution coefficient of roof /
- Fluent /
- wind-induced snow cover distribution model /
- uneven distribution coefficient

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参考文献(15)

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