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Seismic upgrading of square and rectangular RC columns using FRP wrapping

机译：使用FRP包装的正方形和矩形RC色谱柱的地震升级

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摘要

This paper presents the results of an experimental study to evaluate the effectiveness of using FRP wrapping for repair and seismic upgrading of square and rectangular RC columns in buildings. The factors affecting the performance of FRP wrapping in rectangular columns under the action of both axial and combined axial and lateral loads are considered in this paper. These factors include the rectangularity ratio of the column cross section, the thickness of the FRP jacket, and the use of carbon verses glass FRP for column jacketing. Techniques to improve the performance of strengthening rectangular columns were also proposed and evaluated in the paper. Such techniques include rounding the sharp edges of the columns, and transferring square into circular columns using mortar. A total of fourteen half-scale reinforced concrete columns, divided into two groups, are tested in this research. The first group of columns consists of three square columns and three rectangular columns which are tested under axial loads. The second group consists of four square columns and four rectangular columns tested under combined axial and lateral loads.
机译：本文介绍了一种实验研究的结果，以评估使用FRP包装的效果，以便在建筑物中的方形和矩形RC柱的维修和地震升级。本文考虑了影响在轴向和组合轴向和横向载荷的作用下矩形柱中FRP包装性能的因素。这些因素包括柱横截面的矩形比，FRP夹套的厚度，以及碳的玻璃FRP用于柱护套。还提出了提高加强矩形柱性能的技术和评估。这些技术包括圆形柱的尖锐边缘，并使用砂浆将正方形转移到圆柱中。在本研究中测试了总共14个半尺度的钢筋混凝土柱，分为两组。第一组柱由三个方柱和三个矩形柱组成，在轴向载荷下测试。第二组由组合轴向和横向载荷测试的四个方柱和四个矩形柱组成。

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