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Proposal and validation of a design procedure for concentrically braced frames in the chevron configuration

机译：专轮配置中同心支撑框架设计过程的提案和验证

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摘要

In the recent past, several research studies have highlighted that the prescriptions reported in codes for the design of structures with concentric braces in the chevron configuration are often not effective in preventing yielding or buckling of non-dissipative members and in ensuring collapse mechanisms characterised by uniform damage of braces. To investigate the reasons of these deficiencies, in this paper the seismic response of concentrically braced structures designed according to procedures reported in the literature and in the European seismic code is first examined. Then, a new design procedure is proposed, in which the innovative aspects are mainly related to the estimation of the bending moments in columns and to the formulation of requirements on the stiffness of braced beams and columns. The impact of the proposed procedure on the structural costs is computed on a large number of buildings characterised by different occupancy types and geometric properties. The seismic performance of these structures is evaluated by incremental nonlinear dynamic analysis and discussed at the achievement of the significant damage and near-collapse limit states.
机译：在最近的几个研究中，突出了几个研究研究，即在雪佛龙配置中具有同心支架的结构中报告的处方报告的处方通常无效地防止不耗散成员的产量或屈曲，并确保覆盖机制以制服为特征的崩溃机制牙套的损伤。为了调查这些缺陷的原因，在本文中，首先检查了根据文献中报告的程序和欧洲地震代码的程序设计的同心支撑结构的地震反应。然后，提出了一种新的设计程序，其中创新方面主要与柱子中弯曲时刻的估计以及对支撑梁和柱的刚度的规定的估计有关。提出的程序对结构成本的影响是在不同占用类型和几何特性的大量建筑物上计算的。通过增量非线性动态分析评估这些结构的地震性能，并在实现显着损害和近乎折叠限度状态下讨论。

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