权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Study on Snow Load on long span structure

大跨度结构雪荷载研究

基本信息

批准号：
08650680
负责人：
TOMABECHI Tsukasa
金额：
$ 1.34万
依托单位：
Hokkaido Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650680/
关键词：
membrane structures snow load snow sliding 屋根形状滑雪特性

项目摘要

Membrane structures, which were previously used only as temporary structures in Japan in such places as expositions, are now being used as permanent structures due to the progress in analytical methods used for membrane structures and in construction techniques. Since 1988, construction of permanent membrane structures of all sizes has increased rapidly in all areas of Japan, including regions with heavy snowfall, such as Hokkado, Tohoku and Hokuriku areas. In regions with heavy snowfall, snow must be constantly removed from the roof by a natural snow-sliding or melting method so that light can pass through the membrane.The snow load on the roof of a membrane structure is evaluated in the same way as that for other types of buildings. That is, except for special cases (i.e., cases in which a roof design with a lower snow load has been approved by the Ministry of Construction according to Article 38 of the Japanese building coad), the membrane roof, and the main frame supporting the mem … More brane roof and secondary members, of membrane structures constructed in regions with snowfall of one meter are designed according to the effect that the load produced by the amount of snowfall in the region has on the roof. In the new Japan Construction Society Load Guidelines (1993), a reduction of snow load is recognized only in the case where a reliable snow-melting device has been installed on the roof. However, as these guidelines do not provide sufficient data for incorporating controlled snow load in the structural design, "reliability" is not defined. The reasons for this are that most studies on snow accumulation on the roof of a membrane structure have focused on the utilization of material properties of the membrane for removal of snow from the roof and that the history of construction of membrane structures in snowy regions is still short. Data for discussing the evaluation of snow load on the roof of a membrane structure has not been obtained yet. Snow accumulation on the roof, which is assumed in the current design of membrane structures for snowy regions, runs counter to the primary objective in the design of membrane structures ; i.e., the creation of a bright space.In the present study, in order to rationalize the design of membrane structures in regions with heavy snowfall, the accumulation of snow on the roofs of currently existing membrane structures and effectiveness of the methods used for removing snow from these structures have been investigated. Based on the results, a new method for evaluating the snow load on a membrane structure are proposed. Less

在日本，膜结构以前只在博览会等场合作为临时结构使用，现在由于膜结构的分析方法和施工技术的进步，膜结构正被用作永久结构。自1988年以来，各种规模的永久性膜结构的建设在日本所有地区迅速增加，包括降雪量大的地区，如北海道，东北和北陆地区。在降雪量大的地区，必须通过自然滑雪或融雪的方法不断清除屋顶上的积雪，使光线能够透过薄膜。薄膜结构屋顶上的雪荷载的计算方法与其他类型建筑物相同。也就是说，除了特殊情况（即，根据日本建筑规范第38条，具有较低雪荷载的屋顶设计已获得建设部批准的情况）、膜屋顶和支撑膜屋顶的主框架 ...更多信息在降雪量为1米的地区建造的膜结构的膜屋盖和次构件是根据该地区降雪量对屋盖产生的荷载作用来设计的。在新的日本建设协会负荷指南（1993年）中，只有在屋顶上安装了可靠的融雪装置的情况下，才能减少雪负荷。然而，由于这些指南没有提供足够的数据，将控制雪荷载纳入结构设计，“可靠性”没有定义。其原因是，大多数关于膜结构屋顶积雪的研究都集中在利用膜的材料特性来清除屋顶上的积雪，并且在积雪地区建造膜结构的历史还很短。目前还没有得到用于讨论膜结构屋顶雪荷载评估的数据。目前在多雪地区的膜结构设计中假设屋顶上有积雪，这与膜结构设计的主要目标背道而驰，即，在本研究中，为了合理化的设计，在大雪地区的膜结构，积雪在现有的膜结构的屋顶上的积累和有效性的方法，用于从这些结构中清除积雪进行了研究。在此基础上，提出了一种膜结构雪荷载计算的新方法。少