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Seismic behaviour of precast sandwich wall panels of steel fibre reinforced concrete layers and fibre reinforced polymer connectors

机译：钢纤维混凝土层和纤维增强聚合物连接器预制夹层壁板的地震性能

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摘要

In recent past, the authors developed an innovative modular system for low rise building made by structural sandwich panels. This system was conceived with the focus on the rationalization of the construction process and on the thermal efficiency of the building. Thus, the precast panels comprise two outer Steel Fibre Reinforced SelfCompacting Concrete (SFRSCC) layers, a thermal insulation material and Glass Fibre Reinforced Polymer (GFRP) connectors. Studies previously made by the authors have proved the viability of the proposed solution when subjected to flexural loads (out-of-plane loads). However, the in-plane biaxial cyclic behaviour of these type of panels has not yet been assessed. Therefore, to investigate the response of these panels to loading conditions that can occur in a seismic event, an experimental program was carried out. This program was composed of almost real-scale panels (2.0 m by 2.0 m), with and without openings, which were subjected to a constant vertical load representative of the load transferred by the slab to the panel, while horizontal reversed cyclic loading was imposed to the top of the panel. The in-plane cyclic behaviour of the panels was evaluated in terms of strength, stiffness, ductility and energy dissipation. The results have shown that the tested prototypes were able to withstand high values of lateral loads, namely 212 kN and 155 kN in the prototypes without and with opening, respectively.
机译：最近，作者开发了一种创新的模块化系统，用于结构夹层面板的低层建筑。该系统专注于施工过程的合理化和建筑物的热效率。因此，预制面板包括两个外钢纤维增强的自混凝土混凝土（SFRSCC）层，隔热材料和玻璃纤维增​​强聚合物（GFRP）连接器。此前由作者制造的研究已经证明了当经过弯曲载荷（平面外负载）时所提出的解决方案的可行性。然而，尚未评估这些类型的面板的面内胎循环行为。因此，为了研究这些面板对可以在地震事件中发生的装载条件的响应，进行实验程序。该程序由几乎实际的尺度面板（2.0米×2.0米），有和没有开口，其经受由板坯传递到面板的恒定的垂直载荷，而水平反转的循环载荷被施加到面板的顶部。根据强度，刚度，延展性和能量耗散来评估面板的面内循环行为。结果表明，经过测试的原型能够分别承受横向载荷的高值，即212kN和155KN，分别没有和开口。

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