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Studies on seismic reduction of story‐incresed buildings with friction layer and energy‐dissipated devices
Author(s) -
Li HongNan,
Yin YongWei,
Wang SuYan
Publication year - 2003
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.320
Subject(s) - dissipation , earthquake shaking table , damper , structural engineering , frame (networking) , reduction (mathematics) , roof , structural system , seismic energy , engineering , energy (signal processing) , seismic analysis , mechanical engineering , physics , geometry , mathematics , thermodynamics , quantum mechanics
Abstract A new type of energy‐dissipated structural system for existing buildings with story‐increased frames is presented and investigated in this paper. In this system the sliding‐friction layer between the lowest increased floor of the outer frame structure and the roof of the original building is applied, and energy‐dissipated dampers are used for the connections between the columns of the outer frame and each floor of the original building. A shaking table test is performed on the model of the system and the simplified structural model of this system is given. The theory of the non‐classical damping approach is introduced to the calculation analyses and compared with test results. The results show that friction and energy‐dissipated devices are very effective in reducing the seismic response and dissipating the input energy of the model structure. Finally, the design scheme and dynamic time‐history analyses of an existing engineering project are investigated to illustrate the application and advantages of the given method. Copyright © 2003 John Wiley & Sons, Ltd.