Experimental seismic response of circular RC column-bent pier subjected to bi-directional cyclic load

机译：双向循环荷载作用下圆形RC柱弯曲墩的试验地震响应

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Reinforced concrete (RC) column-bent piers represent one of the popular piers used in highway bridges of Korea. Seismic performance of RC column-bent piers under bi-directional seismic loadings was experimentally investigated. Six column-bent piers were constructed with two circular supporting columns which were 400 mm diameter and 2,000 mm height. Test parameters are different transverse reinforcement ratio and loading pattern. These pier specimens were tested under lateral load reversals with an axial load of 0.1f′_cA_g. Three specimens were loaded with bi-directional lateral forces which were main cyclic loads in the longitudinal axis and sub-cyclic loads in the transverse axis. Other three specimens were loaded in the opposite way. Test results indicated that lateral strength and ductility of the latter specimens were bigger than those of the former specimens. Plastic hinge was formed with the spall of cover concrete and the fracture of the longitudinal reinforcing steels in the bottom part of two supporting columns for the former three specimens. Similar behavior was observed in the top and bottom parts of two supporting columns for the latter three specimens.

机译：钢筋混凝土（RC）弯曲的墩墩代表了韩国高速公路桥梁中常用的墩墩之一。通过实验研究了钢筋混凝土弯曲弯墩在双向地震荷载作用下的抗震性能。用两个直径为400毫米，高度为2000毫米的圆形支撑柱建造了六个弯曲的墩墩。试验参数是不同的横向配筋率和加载方式。在横向载荷反转的情况下，以0.1f'_cA_g的轴向载荷对这些墩试样进行了测试。三个样本承受双向横向力，这是在纵向轴上的主循环载荷和在横向轴上的副循环载荷。其他三个标本以相反的方式加载。试验结果表明，后一种试样的横向强度和延展性均大于前一种试样。前三个样品的两个支撑柱底部的覆盖混凝土剥落和纵向钢筋断裂导致形成了塑料铰链。对于后三个样本，在两个支撑柱的顶部和底部观察到类似的行为。

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来源
《International Structural Engineering and Construction Conference(ISEC-03); 20050920-23; Shunan(JP)》|2005年|P.195-201|共7页
会议地点 Shunan(JP)
作者
Y.S. Chung; C.K. Park; B.G. Lee; D.H. Lee;
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作者单位

Dept. of Civil Engineering, Chung-Aung University, Korea;

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原文格式 PDF
正文语种 eng
中图分类混凝土结构、钢筋混凝土结构;
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Experimental seismic response of circular RC column-bent pier subjected to bi-directional cyclic load

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