The development of light weight steel structures in seismic area as Italy requires the upgrading of National Codes. To this end, in the last years a theoretical and experimental study was undertaken at the University of Naples within the Italian research project RELUIS-DPC 2010-2013. The study focused on "all-steel design" solutions and investigated the seismic behaviour of strap-braced stud walls. Three typical wall configurations were defined according to both elastic and dissipative design criteria for three different seismic scenarios. The lateral in-plane inelastic behaviour of these systems was evaluated by twelve tests performed on full-scale Cold-formed strap-braced stud wall specimens with dimensions 2400 x 2700 m subjected to monotonic and reversed cyclic loading protocols. The experimental campaign was completed with seventeen tests on materials, eight shear tests on elementary steel connections and twenty-eight shear tests on strap-framing connection systems. This paper provides the main outcomes of the experimental investigation. Furthermore, the design prescriptions, with particular reference to the behaviour factor and the capacity design rules for these systems, have been proved on the basis of experimental results
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机译:在意大利,地震地区轻钢结构的发展需要对国家法规进行升级。为此,最近几年,那不勒斯大学在意大利研究项目RELUIS-DPC 2010-2013中进行了理论和实验研究。该研究集中在“全钢设计”解决方案上,并研究了带箍双头螺栓墙的抗震性能。根据弹性和耗散设计标准,针对三种不同的地震场景定义了三种典型的墙配置。通过对尺寸为2400 x 2700 m的全尺寸冷弯带状支撑双壁墙样本进行单调和反向循环加载方案进行的十二项测试,评估了这些系统的横向平面内非弹性行为。实验活动完成了十七项材料测试,八项基本钢连接的剪切测试以及二十八条带架连接系统的剪切测试。本文提供了实验研究的主要成果。此外,在实验结果的基础上,证明了设计处方,特别是针对这些系统的行为因素和容量设计规则。
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