| Damping characteristics of friction damped braced frame and its effectiveness in the mega-sub controlled structure system |
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| 作者姓名： | 连业达 张询安 |
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| 作者单位： | College of Mechanics and Civil Engineering Northwestern Polytechnic University，College of Mechanics and Civil Engineering Northwestern Polytechnic University，Department of Civil Engineering University of British Columbia Vancouver Canada，Xi'an 710072 China Xi'an 710072 China |
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| 基金项目： | Science and Technology Fund of NWPU Under Grant No. M450211 and Seed Fund of NWPU Under Grant No. Z200729 |
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| 摘 要： | Based on energy dissipation and structural control principle, a new structural configuration, called the mega- sub controlled structure (MSCS) with friction damped braces (FDBs), is first presented. Meanwhile, to calculate the damping coefficient in the slipping state a new analytical method is proposed. The damping characteristics of one-storey friction damped braced frame (FDBF) are investigated, and the influence of the structural parameters on the energy dissipation and the practical engineering design are discussed. The nonlinear dynamic equations and the analytical model of the MSCS with FDBs are established. Three building structures with different structural configurations, which were designed with reference to the conventional mega-sub structures such as used in Tokyo City Hall, are comparatively investigated. The results illustrate that the structure presented in the paper has excellent dynamic properties and satisfactory control effectiveness.
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| 关 键 词： | 阻尼特性 摩擦损伤 控制结构系统 地震 |
| 文章编号： | 1671-3664（2007）02-0171-11 |
| 收稿时间： | 9 April 2007 |
| 修稿时间： | 2007-04-09 |
Damping characteristics of friction damped braced frame and its effectiveness in the mega-sub controlled structure system |
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| Lian?Yeda,Zhang?Xunan,Sheldon?Cherry.Damping characteristics of friction damped braced frame and its effectiveness in the mega-sub controlled structure system[J].Earthquake Engineering and Engineering Vibration,2007,6(2):171-181. |
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| Authors: | Lian Yeda Zhang Xunan Sheldon Cherry |
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| Institution: | 1. College of Mechanics and Civil Engineering, Northwestern Polytechnic University, Xi'an 710072, China
2. Department of Civil Engineering, University of British Columbia, Vancouver, Canada |
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| Abstract: | Based on energy dissipation and structural control principle, a new structural configuration, called the mega- sub controlled structure (MSCS) with friction damped braces (FDBs), is first presented. Meanwhile, to calculate the damping coefficient in the slipping state a new analytical method is proposed. The damping characteristics of one-storey friction damped braced frame (FDBF) are investigated, and the influence of the structural parameters on the energy dissipation and the practical engineering design are discussed. The nonlinear dynamic equations and the analytical model of the MSCS with FDBs are established. Three building structures with different structural configurations, which were designed with reference to the conventional mega-sub structures such as used in Tokyo City Hall, are comparatively investigated. The results illustrate that the structure presented in the paper has excellent dynamic properties and satisfactory control effectiveness. |
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| Keywords: | friction damped braces mega-sub controlled structure energy dissipation vibration control nonlinear dynamic system |
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