考虑二阶振型的非对称高层建筑横向风荷载响应力学特征分析

IF 1.5 Q3 MECHANICS
Xin Zuo, Die Liu, Ze Xu
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引用次数: 0

摘要

在中国,高层建筑的比例正在增长,这是对当今人类普通愿望的回应,比如高层住宿和高海拔娱乐设施。由于高层建筑的不同特性,研究高层建筑的荷载响应和力学特性是至关重要的。本文首先从高层结构三维风致振动气动建模实验方法的基础上,提出了高层建筑侧应变组合的简单方法和计算公式,对三维风致振动的基本特征进行了系统的研究。利用模态推覆评价技术对高层结构进行了弹塑性分析,认为高阶振动对结构的抗震性能有重要影响。最后,给出了考虑二阶振型的高层建筑在横向风荷载作用下的力学响应计算原则,结果表明:高层建筑在缠绕过程中二阶振型对动力位移的贡献在2%以内。然而,对加速度响应的最大贡献可以达到18%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characteristic Analysis of the Response Mechanics of Asymmetric High-rise Buildings Subjected to Transverse Wind Loads Considering Second-order Vibration Patterns
The share of high-rise structures in China is growing as a response to the ordinary human wishes of today, such as high-rise accommodations and high-altitude enjoyment facilities. Because of the different traits of high-rise buildings, it is critical to find out about the load response and mechanical traits of high-rise buildings. In this paper, first of all, from the aerodynamic modeling experimental methods on the basis of three-dimensional wind-induced vibration of high-rise structures, high-rise buildings, the side-strain combination of the proposed simple and calculation formula, the basic characteristics of three-dimensional wind-induced vibration of a systematic study. The modal pushover evaluation technique is then used to analyze the elasticity and plasticity of the high-rise structure, and it is counseled that the higher-order vibration sample has a vital effect on the seismic resistance of the structure. Finally, a calculation principle of the mechanical response of high-rise construction subjected to transverse wind load thinking about the second-order vibration mode is given, and the outcomes exhibit that the Contribution of the second-order vibration mode to the dynamic displacement in the winding course of high-rise construction is inside 2%. However, the most Contribution to the acceleration response can attain 18%.
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来源期刊
CiteScore
1.70
自引率
8.30%
发文量
0
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