Cyclic Response of Steel Braces
Cyclic Response of Steel Braces
复制标题
钢支架的循环响应
DOI：
10.1061/(asce)0733-9445(1986)112:2(342
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
S. Mahin
中科院分区：
文献类型：
--
作者：
K. Ikeda;S. Mahin
本文提出了一种钢支撑结构弹塑性反应分析模型。该模型实现了现实和效率相结合的分析配方与公式的基础上开发的实验数据的研究。支撑被理想化为在跨中有塑性铰的销端杆件。基于经典的梁柱方程和塑性铰的塑性流动假设，推导了支撑轴力与轴向变形关系的解析表达式。几个经验的行为特征被纳入，以实现更好地代表观察到的循环非弹性行为。该模型是在一个计算效率高的方式，以便适用于研究相对较大的结构系统的动态响应。新模型的验证进行的基础上，一个单独的支柱和支撑钢框架的动力响应分析的准静态分析。该模型能较准确地模拟钢支撑的循环弹塑性性能，可用于支撑框架结构的动力分析。
A model for inelastic response analysis of braced steel structures is presented. This model achieves realism and efficiency by combining analytical formulations with formulas developed on the basis of a study of experimental data. A brace is idealized as a pin-ended member with a plastic hinge located at its midspan. Analytical expressions for the axial force versus axial deformation behavior of the brace are derived on the basis of the classical beam-column equation and a plastic flow hypothesis for the plastic hinge. Several empirical behavioral characteristics are incorporated to achieve better representation of observed cyclic inelastic behavior. The model is implemented in a computationally efficient manner so as to be suitable for studying the dynamic response of relatively large structural systems. Verification of the new model is performed on the basis of a quasi-static analysis of an individual strut and dynamic response analyses of a braced steel frame. The model is able to accurately simulate the cyclic inelastic behavior of steel braces and appears to be reliable and applicable to dynamic analyses of braced frame structures.