Estimations of Buckling Strength and Ultimate Strength of Single Layer Lattice Shells
Estimations of Buckling Strength and Ultimate Strength of Single Layer Lattice Shells
批准号:
14550560
负责人:
OGAWA Toshiyuki
金额:
$1.79万
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2002
资助国家:
日本
项目状态:
已结题
起止时间:
2002 至 2003
中文摘要
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英文摘要
This study is projected for the purpose of collecting of the data on buckling strength and ultimate strength of single layer lattice shells with optional shapes. The outlines for the research results in 2002 and 2003 are shown below.Shape optimizations of single layer lattice shells were carried out for maximizing the linear buckling load and minimizing the difference between the maximum and minimum lengths among the specified members. As a result, while taking the linear buckling loads into consideration, the optimal shapes with few kind of member length were obtained. Smooth optimal shapes could be obtained by modeling the lattice shells using tensor product Bezier surface.The buckling behavior of HP (Hyperbolic Paraboloidal) lattice shells under uniform loadings was examined using the static elasto-plastic buckling analysis. HP lattice shell is a surface with a negative Gauss curvature. The initial yield load and the ultimate load were expressed in terms of column buckling strength, and the concept was applied to estimate the initial yield load and the ultimate load of HP lattice shells. In addition, the effects of loading imperfection and geometrical initial imperfection on the buckling behavior were made clear.On the single layer lattice shells with dome shape, the earthquake response behavior and the dynamic buckling behavior were examined. The CQC (Complete Quadratic Combination) method of response spectrum analysis was used. The response acceleration subjected to horizontal earthquake motions were evaluated. Based on the result, the static earthquake load for lattice dome was proposed. On the dynamic buckling analysis, the step wave and single pulse wave were adopted as input waveforms, the analysis method was the time history non-linear response analysis. The effects of the half subtended angle of the dome and the input direction on the dynamic buckling behavior were examined.
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熊谷知彦, 小河利行: "水平方向ステップ波を受ける剛接合単層ラチスドームの動的座屈性状"日本建築学会大会学術講演梗概集(北陸). B-1分冊. 811-812 (2002)
Tomohiko Kumagai、Toshiyuki Okawa:“水平阶梯波作用下刚性粘合单层晶格圆顶的动态屈曲特性”日本建筑学会会议学术讲座摘要(北陆)第 B-1 卷(2002 年)。 )
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T.Kumagai, T.Ogawa: "Dynamic Buckling Behavior of Single Layer Lattice Domes Subjected to Horizontal Step Wave"International Symposium on New Perspectives for Shell and Spatial Structures (IASS-APCS 2003). (CD-ROM). 1-8 (2003)
T.Kumagai、T.Okawa:“水平阶梯波作用下单层晶格圆顶的动态屈曲行为”壳与空间结构新视角国际研讨会(IASS-APCS 2003)。
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小河利行, 加藤史郎, 萩原真祐子, 立石理恵: "等分布荷重を受ける単層HPラチスシェルの座屈挙動と耐力評価"日本建築学会構造系論文集. 第553号. 65-72 (2002)
小川俊行、加藤四郎、萩原麻由子、立石理惠:“均匀分布荷载作用下的单层 HP 网格壳的屈曲行为和强度评估”日本建筑学会结构工程学报,第 553. 65-72 期( 2002)
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T.Kumagai, T.Ogawa: "Dynamic Buckling Behavior of Rigidly Jointed Single Layer Lattice Domes under Vertical and Horizontal Step Wave"Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan. B-1. 775-776 (2003)
T.Kumagai、T.Okawa:“垂直和水平阶梯波下刚性连接单层格子穹顶的动态屈曲行为”日本建筑学会年会技术论文摘要。
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Y.Nishikawa, T.Ogawa, M.Ohsaki, R.Tateishi: "Shape Optimization of Single-layer Latticed Shells for Maximum Linear Buckling Loads and Uniform Member Lengths-Part 1 : Formulation of Shape Optimization Problem -"Summaries of Technical Papers of Annual Meeti
Y.Nishikawa、T.Okawa、M.Ohsaki、R.Tateishi:“最大线性屈曲载荷和均匀构件长度的单层格子壳的形状优化 - 第 1 部分:形状优化问题的公式化 -”技术论文摘要
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