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Analytical seismic performance assessment of hollow reinforced-concrete bridge columns

机译:空心钢筋混凝土桥梁柱的分析抗震性能评估

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The aim of this study is to analytically assess the seismic performance of hollow reinforced-concrete bridge columns using a novel damage index, and to provide data for developing next generation design criteria. Hollow reinforced-concrete bridge columns have been used in the past in place of their solid counterparts in the construction of bridges. These hollow columns have several benefits over solid columns, including the reduction of vertical load applied to the foundation as well as the reduction of seismic mass. Two circular and two rectangular hollow reinforced-concrete bridge columns were tested under a constant axial load and a cyclically reversed horizontal load. A computer program, RCAHEST (Reinforced Concrete Analysis in Higher Evaluation System Technology), is used to analyse reinforced-concrete structures. Novel damage indices aim to provide a means of quantifying numerically the performance level in cast-in-place and precast hollow reinforced-concrete bridge columns sustained under earthquake loading. The proposed numerical method for the seismic performance assessment of hollow reinforced-concrete bridge columns is verified by comparison with the experimental results.
机译:这项研究的目的是使用一种新的损伤指数来分析评估空心钢筋混凝土桥梁柱的抗震性能,并为制定下一代设计标准提供数据。过去,空心钢筋混凝土桥柱已经代替了坚固的桥梁。这些空心柱相对于实心柱具有多个优点,包括减少了施加到基础上的垂直载荷以及减少了地震质量。在恒定的轴向载荷和周期性反向的水平载荷下测试了两个圆形和两个矩形空心钢筋混凝土桥柱。使用计算机程序RCAHEST(高级评估系统技术中的钢筋混凝土分析)来分析钢筋混凝土结构。新颖的破坏指标旨在提供一种在地震荷载下承受数值的量化现浇和预制空心钢筋混凝土桥梁柱性能水平的方法。通过与实验结果的比较,验证了所提出的空心钢筋混凝土桥梁柱抗震性能评估的数值方法。

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