Failure characteristics of Reinforced Concrete Cylindrical Shells subjected to Partial Snow Load

部分雪荷载作用下钢筋混凝土圆柱壳的破坏特性

• 批准号: 03650466
• 负责人: TAKAYAMA Makoto
• 金额: $ 1.22万
• 依托单位: KANAZAWA INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650466/
• 关键词: reinforced concrete; cylindrical shell; snow load; initial imperfection; curvature of cylinder; buckling; 鉄筋コンクリート円筒シェル; 鉄筋コンクリ-ト円筒シェル

A cylindrical shell is often subjected to snow load as partial load. Buckling behaviors of reinforced concrete cylindrical shell are affected by loading conditions as well as other factors ; boundary conditions, initial imperfections, curvature of cylinder, etc.The purpose of this study is to examine the effects of these factors ; loading condition, initial imperfection and curvature of cylinder ; on the buckling behaviors of reinforced concrete cylindrical shells.The experiments were performed to investigate the effects of these three factors with eight small-scale models. The results of these tests are as follows.The load carrying capacity and the stiffness of the cylindrical shell are considerably affected by the initial imperfection. The load capacity of the cylindrical shell under uniform distributed load is more sensitive to initial imperfection than the cylinder under central partial load. The loading mode affected the buckling behavior of a cylindrical shell as well as the initial imperfection. The effect of curvature of cylinder was less than those of other factors. In the test specimens under a partial load or with initial imperfection, there were larger bending moments than in other specimens. The test results of the specimen with initial imperfection show the good agreement with analytical results.

圆柱壳经常承受作为部分载荷的雪载荷。钢筋混凝土圆柱壳的屈曲行为受荷载条件等因素的影响；边界条件、初始缺陷、圆柱体曲率等。本研究的目的是检验这些因素的影响；圆柱体的载荷条件、初始缺陷和曲率；通过八个小型模型进行实验研究这三个因素的影响。这些试验的结果如下。初始缺陷对圆柱壳的承载能力和刚度有很大影响。均匀分布载荷下的圆柱壳的承载能力比中心部分载荷下的圆柱体对初始缺陷更敏感。加载模式影响圆柱壳的屈曲行为以及初始缺陷。圆柱曲率的影响小于其他因素。在部分载荷或初始缺陷下的测试样本中，比其他样本有更大的弯矩。具有初始缺陷的试样的测试结果与分析结果吻合良好。

项目成果

Nakamura,H., Takayama,M., Kato,S.: "Failure Characteristics and Ultimate Strength of Reinforced Concrete Cylindrical Shell with Geometric Initial Imperfections" Summaries of Tech. Papers of Annual Meeting Arch. Inst. of Japan 1992. Structures I. 1691-1692

Nakamura,H.、Takayama,M.、Kato,S.：“具有几何初始缺陷的钢筋混凝土圆柱壳的失效特征和极限强度”技术摘要。

Takayama,M., Hangai,Y.: "Experiments of the Effect of Curvature of Cylinder on Buckling Behavior of Reinforced Concrete Cylindrical Shells" Proc. of IASS-MSU International Symposium 1993. (1993)

Takayama，M.，Hangai，Y.：“圆柱曲率对钢筋混凝土圆柱壳屈曲行为影响的实验”，Proc。

Takayama,M.,Nakamura,H.,Kato,S.: "Failure Characteristics and Ultimate Strength of Reinforced Concrete Cylindrical Shells" Proc.of IASS-CSCE Int.Congress 1992.Vol.2. 709-720 (1992)

Takayama,M.,Nakamura,H.,Kato,S.：“钢筋混凝土圆柱壳的失效特征和极限强度”Proc.of IASS-CSCE Int.Congress 1992.Vol.2。

Takayama,M.: "Experiments of the Effect of Initial Imperfection on Buckling Behaviour of Reinforced Concrete Cylindrical Shells" Proc.of IASS-CSCE Int.Congress 1992.

Takayama,M.：“初始缺陷对钢筋混凝土圆柱壳屈曲行为影响的实验”Proc.of IASS-CSCE Int.Congress 1992。

高山 誠、半谷 裕彦: "鉄筋コンクリート円筒シェルの破壊性状に与える形状初期不整と荷重モードの影響" 日本建築学会大会学術講演梗概集. 構造I. 1689-1690 (1992)

Makoto Takayama、Hirohiko Hanya：“初始形状不规则性和加载模式对钢筋混凝土圆柱壳断裂性能的影响”日本建筑学会结构会议学术讲座摘要 I. 1689-1690 (1992)。