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首页> 外文期刊>Journal of Composites for Construction >Seismic Performance Assessment of Damage-Controlled FRP-Retrofitted RC Bridge Columns Using Residual Deformations
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Seismic Performance Assessment of Damage-Controlled FRP-Retrofitted RC Bridge Columns Using Residual Deformations

机译：基于残余变形的受损控制FRP加固RC桥柱的抗震性能评估

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摘要

Despite the improved performance of fiber-reinforced plastic (FRP)-retrofitted bridges, residual deformations in the event of an earthquake are inevitable. Little consideration is currently given to these deformations when assessing seismic performance. Moreover, important structures are currently required not only to have high strength and high ductility but also to be usable and repairable after high intensity earthquakes. This paper presents a definition of an FRP-RC damage-controllable structure. An intensive study of 109 bridge columns, extracted from recent research literature on the inelastic performance of FRP retrofitted columns with lap-splice deficiencies, flexural deficiencies, or shear deficiencies, is used to evaluate the recoverability of such retrofitted columns. The residual deformation, as a seismic performance measure, is used to evaluate the performance of 39 FRP-retrofitted RC columns from the available database. Based on this evaluation, a requirement for the recoverable and irrecoverable states of FRP-RC bridges is specified. Finally, the Seismic Design Specifications of Highway Bridges for RC piers is adapted to predict the residual deformations of FRP-RC columns.
机译：尽管纤维增强塑料（FRP）加固的桥梁的性能有所提高，但在地震中残留变形是不可避免的。在评估抗震性能时，目前很少考虑这些变形。此外，当前不仅要求重要的结构具有高强度和高延展性，而且还要求在高强度地震后其可使用和可修复。本文提出了FRP-RC损伤可控结构的定义。从最近的研究文献中提取的109根桥柱进行了深入研究，该研究涉及具有搭接缺陷，弯曲缺陷或剪切缺陷的FRP加固柱的无弹性性能，用于评估此类加固柱的可恢复性。残余变形作为一项抗震性能指标，用于从可用数据库中评估39根FRP加固的RC柱的性能。基于此评估，对FRP-RC桥梁的可恢复和不可恢复状态提出了要求。最后，RC墩公路桥梁的抗震设计规范适用于预测FRP-RC柱的残余变形。

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