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首页> 外文期刊>Journal of Engineering Mechanics >Controlling characteristics of passive mega-subcontrolled frame subjected to random wind loads
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Controlling characteristics of passive mega-subcontrolled frame subjected to random wind loads

机译：随机风荷载作用下被动超大型次受控框架的控制特性

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摘要

uThe passive mega-subcontrolled structure proposed recently is a new form of structure associated with the design and construction of supertall buildings. However, a shortcoming still exists in its structural configuration. In this paper, a new configuration of the passive mega-subcontrolled frame is proposed. A more realistic analytical model of this structure subjected to random wind loads is presented, in which the substructures are treated as a multi-degree-of-freedom (MDOF) system and a nonwhite stochastic process in time and space is used. The dynamic equations and the response spectrum expressions, as well as the mean square response expressions, are derived on the basis of complex modal-analysis theory. A practical steel passive mega-subcontrolled frame is investigated; it is designed with reference to the conventional mega-subframe used in the Tokyo City Hall. The influence of the relative mass ratio and the relative stiffness ratio on the controlling effectiveness is investigated; and a proposed relative stiffness region, which is very useful in practical engineering design, is first presented. The corresponding computing results demonstrate that the structural configuration proposed here has extraordinary effectiveness in controlling displacement responses and acceleration responses, and the shortcoming that existed in the previously presented configuration can be overcome effectively.
机译：u最近提出的被动超高层控制结构是与超高层建筑的设计和建造相关的一种新形式的结构。但是，其结构构​​造仍然存在缺点。在本文中，提出了一种新的无源巨型亚受控框架的配置。提出了一种对该结构承受随机风荷载的更现实的分析模型，其中将子结构视为多自由度（MDOF）系统，并使用了时空上的非白色随机过程。在复杂的模态分析理论的基础上，推导了动力学方程和响应谱表达式，以及均方响应表达式。研究了一种实用的钢制被动超次受控框架。它是参照东京市政厅中使用的常规大型超框架设计的。研究了相对质量比和相对刚度比对控制效果的影响。首先提出了一个建议的相对刚度区域，该区域在实际工程设计中非常有用。相应的计算结果表明，本文提出的结构构型在控制位移响应和加速度响应方面具有非凡的有效性，并且可以有效地克服先前提出的构型中存在的缺点。

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