Rocking Motion and Criteria for Overturning of Bodies in Buildings during Earthquakes

地震时建筑物的摇摆运动和倾覆准则

• 批准号: 05650527
• 负责人: ISHIYAMA Yuji
• 金额: $ 1.6万
• 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 (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05650527/
• 关键词: Earthquake motions; Rocking motion; Criteria for overturning; Asymmetric bodies; Adjacent walls; 右右非対称物体

Overturning of bodies by earthquake motions has been studied for more than a hundred years. The phenomenon looks simple, however, it exposes very difficult problems when the exact solutions are sought. The head investigator had studied the problems and proposed the criteria for overturning of symmetric bodies previously.Since the bodies are not always symmetric and the problems becomes more more important for the prevention of overturning building equipment, furniture, computers, etc. Therefore the computer program has been developed so that it is possible to analyze asymmetric bodies considering the effect of adjacent walls. The simulation of symmetric and asymmetric bodies with and without adjacent walls subjected to sinusoidal and earthquake excitations has been carried out, and the improved criteria for overturning of bodies has been proposed. The asymmetric bodies overturn more easily than symmetric bodies and adjacent walls prevent overturning to that side, however the effect is only valid that the bodies locate within 0.2 times of the breadth of bodies from the wall.

人们对地震运动引起的物体倾覆的研究已经有一百多年的历史了。这一现象看似简单，但在寻求确切的解决方案时，却暴露出非常困难的问题。首席研究员研究了这个问题，并提出了对称体的倾覆准则。由于对称体并不总是对称的，因此这个问题对于防止建筑设备、家具、计算机等的倾覆变得更加重要。因此开发了计算机程序，以便可以分析考虑相邻墙壁影响的非对称体。对对称和非对称的有、无相邻墙体的结构在正弦和地震作用下进行了数值模拟，提出了改进的结构倾覆判据。不对称的物体比对称的物体更容易倾覆，并且相邻的墙壁防止向该侧倾覆，然而，该效果仅在物体位于距离墙壁的物体宽度的0.2倍以内时有效。

项目成果

Masao HOSHINO,Tsuyoshi YAMADA and Yuji ISHIYAMA: "Motions of rigid bodies on a floor with a wall, Criteria for overturning of rigid bodies with a wall-Part.1 Proposal of criteria for overturning of rigid bodies(in Japanese)" Proceedings of the Annual Meet

Masao HOSHINO、Tsuyoshi YAMADA 和 Yuji ISHIYAMA：“带墙的地板上刚体的运动，带墙的刚体翻转的标准 - 第 1 部分刚体翻转标准的建议（日语）”会议论文集

Masahiko YAZAKI,Tetsuhiro ASARI and Yuji ISHIYAMA: "Motions of unsymmetric rigid bodies on a rigid floor with a wall(in Japanese)" Proceedings of the Annual Meeting of the Hokkaido Branch of the Architectural Institute of Japan. No.70. 133-136 (1997)

Masahiko YAZAKI、Tetsuhiro ASARI 和 Yuji ISHIYAMA：“带墙的刚性地板上不对称刚体的运动（日语）”日本建筑学会北海道分会年会论文集。

荒谷直樹,石山祐二: "左右非対称剛体のロッキング振動と転倒条件" 日本建築学会北海道支部研究報告集. No67. 97-100 (1994)

Naoki Araya、Yuji Ishiyama：“非对称刚体的摇摆振动和倾覆条件”日本建筑学会北海道分会研究报告第67. 97-100号（1994）

星野正雄,山田剛,石山祐二: "剛体のロッキング振動と転倒条件-壁がある場合への展開-" 日本建築学会大会学術講演梗概集(北海道). 975-976 (1995)

Masao Hoshino、Tsuyoshi Yamada、Yuji Ishiyama：“刚体的摇摆振动和倾覆条件 - 有墙时的发展 -”日本建筑学会会议学术讲座摘要（北海道）975-976（1995）。

荒谷直樹、他: "左右非対称剛体のロッキング振動と転倒条件" 日本建築学会北海道支部研究報告集. 67. 97-100 (1994)

Naoki Araya等：“非对称刚体的摇摆振动和倾覆条件”日本建筑学会北海道分会研究报告67. 97-100（1994）。