偏心非结构在水平振动作用下的响应

IF 1.5 4区 工程技术 Q3 MECHANICS
Liang-Shen Su, Chi-Hao Lin, Kuo-Ching Chen
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引用次数: 0

摘要

相对于建筑结构,非结构抗震性能的研究较少,特别是偏心非结构抗震性能的研究较少。偏心块可能是建筑物中的设备或非结构部件,在水平振动作用下,本文试图探讨偏心块的摇晃和倾覆。在本研究中,将非结构视为具有可调质量偏心率的刚体,并假定接触摩擦大到足以防止刚体滑动。首先进行了自由振动试验,确定了恢复系数的取值。然后研究了偏心块在扫频振荡下下落时的临界时间和加速度。最后,根据地震记录对每个偏心块体进行实际加速度测量,并探讨相应的倾倒概率。研究发现,砌块的倾倒与地面加速度峰值的大小没有必然的联系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On the response of eccentric non-structures subjected to horizontal oscillation
In contrast to building structures, little attention has been paid to the seismic performance of non-structures in buildings, especially of eccentric non-structures. This paper attempts to explore the rocking and overturning of eccentric blocks, which could be the equipment or non-structural components in buildings, subjected to horizontal vibration. In the present study, a non-structure is regarded as a rigid block with tunable mass eccentricity, and the contact friction is assumed to be large enough to prevent the rigid block from sliding. A free shaking test is first carried out to determine the value of the coefficient of restitution. Force oscillations are then investigated to determine the critical time and acceleration when the eccentric blocks fall down under the swept-frequency oscillation. Finally, an actual acceleration from the seismic records is executed on each of the eccentric blocks to measure and to explore the corresponding toppling probability. It is found that the toppling of blocks is not necessarily linked to the magnitude of the peak ground acceleration.
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来源期刊
Journal of Mechanics
Journal of Mechanics 物理-力学
CiteScore
3.20
自引率
11.80%
发文量
20
审稿时长
6 months
期刊介绍: The objective of the Journal of Mechanics is to provide an international forum to foster exchange of ideas among mechanics communities in different parts of world. The Journal of Mechanics publishes original research in all fields of theoretical and applied mechanics. The Journal especially welcomes papers that are related to recent technological advances. The contributions, which may be analytical, experimental or numerical, should be of significance to the progress of mechanics. Papers which are merely illustrations of established principles and procedures will generally not be accepted. Reports that are of technical interest are published as short articles. Review articles are published only by invitation.
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