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首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Influence of repairable bolted dissipative beam splices (structural fuses) on reducing the seismic vulnerability of steel-concrete composite frames
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Influence of repairable bolted dissipative beam splices (structural fuses) on reducing the seismic vulnerability of steel-concrete composite frames

机译：可修复的螺栓耗散梁接头（结构熔断器）对减少钢混凝土组合框架抗震性的影响

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摘要

After a strong earthquake, repair work of conventional steel-concrete composite buildings can be very expensive, and very often, impossible due to practical problems. Within the EU-funded research project FUSEIS, a new steel-concrete composite frame type has been developed, as a cost-effective and robust alternative to conventional earthquake resistant structures. In this new frame type, damage concentrates mainly in the bolted dissipative beam splices acting as "structural fuses", which can be easily and inexpensively replaced after strong seismic events. After the replacement, the building can be restored to its original form. This paper studies a benchmark building frame with and without bolted dissipative beam splices. The performance of both innovative and conventional structures has been quantified in terms of energy dissipation, floor displacements and inter-story drifts, as a result of nonlinear transient dynamic analysis. Different than similar studies in the literature, the numerical models explicitly consider the presence of reinforced concrete slab by means of fiber-based distributed plasticity approach. They have been calibrated according to the experiments, both provided in the literature and performed in the FUSEIS research project. The models allowed the quantification of the energy dissipated by each component of a steel-concrete composite frame (structural fuses, steel elements, concrete slab and steel reinforcement), which gave an insight on redistribution of dissipated energy in the case of adopting the structural fuses with respect to the traditional steel-concrete composite buildings. Based on the results of the numerical analysis, the reparability aspect has been discussed.
机译：强烈地震后，传统的钢混混凝土建筑的维修工作可能非常昂贵，并且由于实际问题常常无法进行维修。在由欧盟资助的研究项目FUSEIS中，已经开发出一种新型的钢-混凝土复合框架类型，作为传统抗震结构的一种经济高效且坚固的替代方案。在这种新的框架类型中，损坏主要集中在充当“结构熔断器”的螺栓耗散梁接头上，在发生强烈地震事件后可以轻松，廉价地更换它们。更换后，建筑物可以恢复到其原始形式。本文研究了带有和不带有螺栓耗散梁接头的基准建筑框架。作为非线性瞬态动力分析的结果，创新和传统结构的性能已通过能量耗散，地板位移和层间漂移进行了量化。与文献中的类似研究不同，数值模型通过基于纤维的分布式可塑性方法明确考虑了钢筋混凝土平板的存在。已根据文献中提供的实验以及在FUSEIS研究项目中进行的实验对它们进行了校准。这些模型可以量化钢-混凝土复合框架各组成部分（结构熔断器，钢构件，混凝土板和钢筋）的耗散能量，从而在采用结构性熔断器的情况下提供了耗散能量重新分配的见解。相对于传统的钢混混凝土建筑。基于数值分析的结果，讨论了可修复性方面。

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