Ductile design of CBF steel structures

机译：CBF钢结构的延性设计

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The use of concentric braced frames (CBF) in seismic areas has been dissuaded by the past codes because of non-ductile behavior of this structural typology during large cyclic deformations in the post-buckling range. Only in the last twenty years this typology has been included in the class of 'ductile structures' by major codes, and the relevant code design provisions have been subjected to significant changes. In this paper the design procedure and the governing design parameters for CBF are examined with reference to European and Italian seismic codes; some case studies (3 and 6 storey CBF buildings) are designed, both in high and low seismic zone, and the effect of some design choices (i.e. number of CBF bays) is discussed and evaluated in terms of structural weight and design overstrength.

机译：由于在后屈曲范围内较大的周期性变形过程中这种结构类型的非延性行为，因此过去的规范不鼓励在地震区域中使用同心支撑框架（CBF）。仅在最近的二十年中，这种类型才被主要法规纳入“延性结构”类别，并且相关法规的设计规定也发生了重大变化。本文参照欧洲和意大利的地震法规，研究了CBF的设计程序和控制设计参数。在高地震带和低地震带都设计了一些案例研究（3层和6层CBF建筑物），并从结构重量和设计超强度方面讨论和评估了某些设计选择（即CBF湾的数量）的影响。

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来源
《EUR 21431; Final Conference of Cost Action C12; 20050120-22; Innsbruck(AT)》|2005年|P.629-637|共9页
会议地点 Innsbruck(AT)
作者
A. De Luca; E. Mele; E. Grande;
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Dep. of Structural Analysis and Design, University of Naples Federico II;

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正文语种 eng
中图分类建筑结构;
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Ductile design of CBF steel structures

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