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Universal equivalent static wind load distributions reproducing maximum load effects for all structural members

通用等效静态风荷载分布再现所有结构构件的最大荷载效应

基本信息

批准号：
17360277
负责人：
TAMURA Yukio
金额：
$ 9.54万
依托单位：
Tokyo Polytechnic University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360277/
关键词：
maximum load effect quasi-static wind load wind tunnel proper orthogonal decomposition FEM analysis time-domain response analysis tall building low-rise building

项目摘要

The universal equivalent static wind load that reproduces the maximum wind load effects of all structural members was studied. Multi-channel simultaneous fluctuating pressure measurements were made for various types of structures such as long-span cantilevered roofs, dome roofs, high-rise buildings and so on in a boundary-layer wind tunnel. Time-domain response analyses were conducted based on the FEM models of structures, and the maximum wind load effects such as axial forces, shear forces or bending moments in all members were extracted. The universal equivalent static wind load distribution was derived using the eigenvectors of the POD analysis of the fluctuating pressure field and coefficients obtained by a singular value decomposition. The method was then applied to a long-span cantilevered roof structures and others, and some examples of the universal equivalent static wind load distributions were obtained and stored as a database. The method was extended to apply to the cases of … More the maximum wind load effects including a resonant component. One of the difficult problems to solve was the combination of the signs of the maximum and minimum load effects. In some cases, the obtained universal equivalent static wind load distributions could be irregular and unnatural, which seemed to be inappropriate for general application. It was found that the signs of the largest load effects could be determined from the POD eigen-modes of the internal forces and that the obtained universal equivalent static wind load distributions were smooth and natural. Largest load effects estimated by the time history response analyses were compared with those reproduced by the GLF method, the LRC method and the universal equivalent static wind load method. The largest load effects estimated by the GLF method and the LRC method vary widely from the actual largest load effects, but those reproduced by the universal equivalent static wind load method showed good agreement with the actual largest load effects in all cases. Less

研究了再现所有构件最大风荷载效应的通用等效静风荷载。在边界层风洞中对大跨度悬挑屋顶、穹顶屋顶、高层建筑等不同类型的结构进行了多通道同时脉动压力测量。基于有限元模型对结构进行时域响应分析，提取各构件的最大轴力、剪力或弯矩等风荷载效应。利用脉动压力场POD分析的特征向量和奇异值分解得到的系数，推导出通用等效风荷载分布。将该方法应用于某大跨度悬挑屋盖等结构，得到了一些通用等效静风荷载分布实例，并将其存储为数据库。将该方法推广到包含共振分量的最大风荷载效应的情况。最难解决的问题之一是最大和最小载荷效应的组合。在某些情况下，得到的通用等效静风荷载分布可能是不规则和不自然的，似乎不适合一般应用。结果表明，从内力的POD本征模态可以确定最大荷载效应的标志，得到的通用等效风荷载分布平滑自然。将时程响应分析所得的最大荷载效应与GLF法、LRC法和通用等效静风荷载法所得的最大荷载效应进行了比较。GLF法和LRC法估计的最大荷载效应与实际最大荷载效应相差很大，但通用等效静风荷载法所再现的最大荷载效应与所有情况下的实际最大荷载效应吻合较好。少

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Equivalent static wind load estimation in wind-resistant design of single-layer reticulated shells

DOI：
10.12989/was.2005.8.6.443
发表时间：
2005-11
期刊：
Wind and Structures
影响因子：
1.6
作者：
Yuanqi Li;Y. Tamura
通讯作者：
Yuanqi Li;Y. Tamura

Universal wind load distribution reproducing maximum load effects of all structural members.

通用风荷载分布再现所有结构构件的最大荷载效应。

DOI：
发表时间：
2005
期刊：
Summaries to Technical Papers of Annual Meeting Architectural Institute of Japan
影响因子：
0
作者：
Qian;Y. and A. Mita;T.Yoshida
通讯作者：
T.Yoshida

New attempt on universal equivalent static wind load for large span cantilevered roof, Part 2 Application for truss structural roof.

大跨度悬挑屋盖通用等效静风荷载新尝试，第2部分在桁架结构屋盖中的应用。

DOI：
发表时间：
2006
期刊：
Summaries to Technical Papers of Annual Meeting Architectural Institute of Japan
影响因子：
0
作者：
Zheng;H.;A.;Mita;吉田智哉;Qian Y. and A. Mita;A.Katsumura;Qian Y. and A. Mita;T.Yoshida
通讯作者：
T.Yoshida

Universal wind load distribution reproducing the maximum quasi-static wind load effects for all members.

通用风荷载分布为所有成员再现最大准静态风荷载效果。