【摘要】 (BRBs)以能量理论为基础,阐明了约束屈曲支撑BRBs损伤量的涵义,提出了适合框架结构的单自由度BRBs损伤量的分析模型,并利用有限元软件ANSYS8.0对所建立的模型进行了非线性动力时程分析,得到了BRBs的地震动力响应,并推导建立了实用的BRBs损伤量的计算模型,通过MATLAB编程计算,得出了地震作用下BRBs的损伤量.更多还原

【Abstract】 The energy dissipation design method has received more attention by engineering circle.Nowadays,the buckling-restrained braces(BRBs) are used in higher structures being dissipation energy components.So, it is very necessary to determine the damage quantity of BRBs under earthquake. Firstly,the meaning of the damage quantity of BRBs is clarified based on the energy theory.Secondly,a single-degree of freedom analyses model which is suitable to the frame structure is proposed.The nonlinear dynamic time-history analysis of BRBs system is carried out by using FEM software of ANSYS-8.0,and seismic response of BRBs is obtained.Finally,a practical calculation model of the Damage quantity of BRBs is established.Using MATLAB software,the Damage quantity of BRBs is obtained.更多还原