【作者】 徐晓；

【导师】 魏建国；

【作者基本信息】 河北农业大学 ， 水利水电工程， 2003， 硕士

【摘要】 耗能减震技术是通过在结构中设置特殊的耗能装置，吸收本来由主要结构构件消耗的地震输入能量，以达到减少结构地震反应的目的。耗能减震技术以其行之有效、简单方便、经济实用等优势，得到了工程界的认可与欢迎，为了使耗能减震技术广泛应用于我国，有必要对其进行深入的理论分析与研究。本文针对摩擦耗能这一减震形式进行讨论，采用非线性弹簧单元、组合单元建立摩擦耗能支撑框架结构的有限元模型。选取一五层框架作为算例，利用ANSYS程序，对摩擦耗能支撑框架、无支撑框架和普通支撑框架的地震反应进行了计算比较，分析了摩擦耗能支撑的减震效果。结果表明：摩擦耗能支撑具有明显的减震效果，它大大降低了地震作用下结构的峰值反应，有效地消耗了地震能量。此外，本文还对耗能支撑减震参数(斜撑刚度、耗能器屈服位移)的改变以及耗能支撑的不同布置方式对结构减震效果的影响进行了分析，为摩擦耗能支撑框架的设计提供一些参考性建议。更多还原

【Abstract】 The technology of energy dissipation can reduce the seismic response of structure by assigning special energy dissipation devices that dissipate most of earthquake input energy. Energy dissipation technology is accepted and popular in the field of engineering, because of the features of simple, facility, effective and economy. In order that energy dissipation technology is used widely in china, it is necessary to analysis and study the theory deeply. In the paper, friction energy dissipation is discussed mainly. Using nonlinear spring element and combination element, the finite element model of friction energy dissipating brace frame is established. By ANSYS finite element program the seismic response of a five-story frame structure with friction dissipating braces is analyzed, and is compared with that of the pure frame structure without brace and the brace frame structure without friction dissipation devices. The results show that the friction energy dissipating brace has obviously seismic vibration- suppressed effect, and decreases maximum response of structure sharply when earthquake occurs, and dissipates a great deal of earthquake input energy. Moreover, The influence of parameters, such as bracing stiffness, yielding displacement of the dissipater and different distribution of dissipating braces on the suppressive effectiveness of structure vibration is studied and some referential suggestion is presented for the design of passive energy dissipation system.更多还原