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您的检索式：作者名="Sheldon Cherry"
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| 1 | Damping characteristics of friction damped braced frame and its effectiveness in the mega-sub controlled structure system显示文摘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. | 连业达 张洵安 Sheldon Cherry | 2007 | Earthquake Engineering and Engineering Vibration2007，6，2： | 18 |
| 2 | Study on semi-active control of mega-sub controlled structure by MR damper subject to random wind loads显示文摘The recently proposed mega-sub controlled structure (MSCS), a new type of structure associated with the design and construction of super-tall buildings, has attracted the attention of designers for use in enhancing the control effectiveness in mega-frame buildings. In this paper, a dynamic equation and method to assemble parameter matrixes for a mega-sub controlled structure under random wind loads is presented. Semi-active control using magnetorheological dampers for the MSCS under random wind loads is investigated, and is compared with a corresponding system without dampers. A parametric study of the relative stiffness ratio and relative mass ratio between the mega-frame and the substructures, as well as the additional column stiffness ratio that influences the response control effectiveness of the MSCS, is discussed. The studies reveal, for the first time, that different control mechanisms exist. The results indicate that the proposed structure employing semi-active control can offer an effective control mechanism. Guidelines for selecting parameters are provided based on the analytical study. | Qin Xiangjun Zhang Xun'an Sheldon Cherry | 2008 | Earthquake Engineering and Engineering Vibration2008，7，3： | 7 |
| 3 | Design of friction damped structures using lateral force procedure 显示文摘 | Yaomin Fu And Sheldon Cherry | 2000 | Earthquake Engineering and structural dynamics2000，29，： | 1 |
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