摩擦消能支撑框架的减震分析与研究

【作者】 欧海龙；

【导师】 于德介； 李向真； 周福霖；

【作者基本信息】 湖南大学 ， 机械设计与理论， 2001， 硕士

【摘要】 本文在广泛调查研究国内外对摩擦阻尼器的研究成果的基础上，设计了一种综合利用转动摩擦和滑动摩擦耗散地震能量的Ⅱ_b型复合摩擦消能支撑，建立了Ⅰ_o型和Ⅱ_b型两种摩擦消能支撑的弹塑性本构模型；对摩擦消能支撑框架结构的弹塑性地震反应作了仿真分析，并编制了相应的计算程序；进行了摩擦消能支撑的低周反复荷载试验和摩擦消能支撑框架的模拟地震振动台试验；在弹塑性动力时程分析的基础上采用多层复形法按照预定目标优化了摩擦消能支撑参数。摩擦消能支撑的静、动力试验与仿真分析的结果表明，Ⅱ_b型摩擦消能支撑的耗能机理明确，耗能减震效果好。借助摩擦消能支撑参数的优化分析，可以经济而有效地实现多高层建筑“大震不倒”或“大震不坏”的目标。更多还原

【Abstract】 Mixed ffiction energy dissipMixed friction energy dissipation brace (MFEDB) named “b was devised to consume vibration energy by rotational and sliding friction based on the investigation into the achievements of friction dampers around the world. The main content of this paper includes: (a).deducing elastoplastic resilience models of two MFEDBs; (b). elastoplastic response simulating and programming of friction energy dissipation braced frame (FEDBF); (c). quasi-static cyclic tests to “b and vibration table tests to FEDBF; (d).multi-layer complex programming to optimize structures and (e).MFEDB parameters optimizing according to the destined purpose by virtue of elastoplastic dynamic time history analysis. It was verified that the energy dissipation mechanism of“b is indisputable and the shock absorption ability of “b is excellent. The goal of “no collapse or no damage to tall buldings under severe earthquake” can be economically and effectively realized by MFEDB parameter optimization.更多还原