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

研究了所有结构构件的最大风负荷效应的通用等效静电载荷。在边界层风洞中，对多种类型的结构（例如长跨悬臂屋顶，圆顶屋顶，高层建筑等）进行了多种渠道同时的波动压力测量。根据结构的FEM模型进行了时间域响应分析，并提取所有成员中的最大风负荷效应，例如轴向力，剪切力或弯矩。使用奇异压力场的POD分析和通过单数值分解获得的系数的POD分析的特征向量得出了通用等效的静态风负荷分布。然后将该方法应用于长跨度的悬臂屋顶结构和其他方法，并获得了通用等效的静态风负荷分布的一些示例，并作为数据库存储。扩展的方法应用于……更多的最大风负荷效应，包括谐振组件。要解决的困难问题之一是最大和最小负载效应的迹象的组合。在某些情况下，获得的通用等效静态风负荷分布可能是不规则和不自然的，这似乎不适合一般应用。发现最大载荷效应的符号可以从内力的豆荚特征模式中确定，并且获得的通用等效静态风负荷分布是平滑而自然的。将时间历史响应分析估计的最大负载效应与通过GLF方法，LRC方法和通用等效静态风负荷方法复制的响应分析进行了比较。通过GLF方法估计的最大负载效应和LRC方法的效果与实际最大载荷效应差异很大，但是通过通用等效静态风负荷方法再现的负载效应与所有情况下的实际最大负载效应相吻合。较少的

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）

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

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。

DOI：
发表时间：
2005
期刊：
Journal of Structural and construction Engineering No.590
影响因子：
0
作者：
Mita;A.;A.Katsumura
通讯作者：
A.Katsumura

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

大スパン片持ち屋根のユニバーサルな等価静的風荷重に関する新しい試みその2 トラス構造屋根モデルへの適用

大跨度悬臂屋盖通用等效静风荷载新尝试第2部分在桁架结构屋盖模型中的应用