Earthquake-proof of Concrete Stave Silos with Structural Discontinuity

结构不连续的混凝土冷却壁筒仓的抗震

• 批准号: 63460149
• 负责人: YOSHIMURA Jin
• 金额: $ 2.88万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-63460149/
• 关键词: Concrete; Stave silo; Tower Silo; Earthquake - Proof; Dynamics; Seismic Response; サイロ; 耐震設計; 不連続体; コンクリートステーブサイロ; 不連続壁体構造; サイロの地震時挙動

Concrete stave silos are segmental silo structures which are cylindrically assembled from precast concrete blocks called "staves" and held together by exterior adjustable steel hoops.A series of shaking table tests was performed using a 1/8- scale stave sile model and a cylindrical shell model. The effects of the joints of staves and of a stored material on the dynamic behavior are also investigated. The experimental results reveal that the hysteretic restoring force characteristics of concrete stave silos are caused by not only the damping effect of a stored material but also their structural discontinuity.For dynamic analysis of concrete stave silos with such structural discontinuity, a new discrete model called "stave silo element" is developed. A method for determining spring stiffness in stave silo elements is also proposed : at first, the equivalent spring stiffness to the continuous cylindrical shell are calculated and then a reduction factor of the equivalent stiffness is estimated. To verify the validity of stave silo elements and the method of the equivalent stiffness and its reduction factor, seismic response analyses of a stave silo model are carried out and compared with its experimental results. A good agreement was obtained.

混凝土径径孤岛是节段的孤岛结构，它们是由称为“养殖者”的预制混凝土块组装的，并由外部可调钢箍组合在一起。使用1/8-Scave save Sile Sile模型和一个圆柱形壳进行了一系列摇桌测试模型。还研究了五线排关节和存储材料对动态行为的影响。实验结果表明，混凝土径径筒仓的滞后恢复力特征不仅是由于存储材料的阻尼效应，而且还引起了它们的结构不连续性。用于与这种结构性不连续性的混凝土板筒筒仓的动态分析，这种结构不连续性，一种称为新的离散模型，称为新的离散模型”开发的锯齿筒元元素。还提出了一种确定径向筒仓元件中弹簧刚度的方法：首先，计算出等效圆柱壳的等效弹簧刚度，然后估计等效刚度的还原因子。为了验证Stave Silo元素的有效性以及等效刚度及其还原因子的方法，进行了对径位筒仓模型的地震反应分析，并将其与其实验结果进行了比较。获得了良好的协议。

项目成果

Y.Sasaki,J.Yoshimura: "Seismic Response of Concrete Stave Silos with Structural Discontinuity" Proceedings of the Ninth World Conference on Earthquake Engineering. VI. 849-854 (1989)

Y.Sasaki，J.Yoshimura：“结构不连续性混凝土壁筒仓的地震响应”第九届世界地震工程会议论文集。

Y. Sasaki. J. Yoshimura: "Dynamic Discrete Modeling and Seismic Response Analysis of Concrete Save Silos with Structural Discontinuity" Journal of Structural Engineering. Vol. 37A. (1991)

Y.佐佐木。

佐々木康彦: 構造工学論文集. Vol.36A. (1990)

佐佐木康彦：结构工程论文第 36A 卷（1990 年）。

佐々木 康彦,芳村 仁: "コンクリ-トステ-ブサイロの構造不連続性を考慮した動的解析モデルと地震応答解析" 構造工学論文集. Vol.37A. (1991)

Yasuhiko Sasaki，Hitoshi Yoshimura：“考虑混凝土筒仓结构不连续性的动态分析模型和地震响应分析”《结构工程杂志》第 37A 卷。

佐々木 康彦,芳村 仁: "コンクリ-トステイブサイロの地震応答特性と不連続構造の影響に関する実験的研究" 構造工学論文集. Vol.36A. 803-812 (1990)

Yasuhiko Sasaki，Hitoshi Yoshimura：“混凝土壁仓地震反应特性及不连续结构影响的实验研究”结构工程学报第 36 卷 803-812（1990）。