Experimental and numerical investigation of the seismic performance of hollow rectangular bridge piers constructed with and without steel fiber reinforced concrete
Experimental and numerical investigation of the seismic performance of hollow rectangular bridge piers constructed with and without steel fiber reinforced concrete
复制标题
钢纤维混凝土空心矩形桥墩抗震性能试验与数值研究
DOI：
10.1016/j.engstruct.2012.09.040
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发表时间：
2013-03-01
影响因子：
5.5
通讯作者：
Yuan, Wan-cheng
中科院分区：
文献类型：
--
作者：
Zhang, Yu-ye;Harries, Kent A.;Yuan, Wan-cheng
通过模型试验和数值模拟，对钢筋混凝土和钢纤维混凝土矩形空心墩的抗震性能进行了评价。两个大型桥墩试件，少量的横向钢筋，模拟和测试下的组合反向循环横向荷载和恒定的轴向荷载。一个试样由常规钢筋混凝土制成，而另一个由钢纤维混凝土制成-钢纤维体积分数为1.0%。研究了试件的破坏形态、滞回特性、延性、刚度退化和耗能能力等抗震性能。使用OpenSees进行了相应的有限元模拟，并将结果与实验结果进行了比较。此外，基于OpenSees分析平台，对不同钢纤维含量和横向配筋率的空心墩抗震性能进行了参数分析。有限元分析结果与实验数据吻合较好。结果表明，钢纤维的掺入改善了空心墩的滞回特性、延性和耗能能力，钢纤维可替代部分空心墩横向钢筋用于抗震设计。(C)2012爱思唯尔有限公司保留所有权利。
The seismic performance of reinforced concrete and steel fiber reinforced concrete rectangular hollow piers is evaluated through model tests and numerical simulations. Two large-scale pier specimens, with small amounts of transverse reinforcement, were modeled and tested under a combination of reversed cyclic lateral loading and constant axial loading. One specimen was made of conventional reinforced concrete, while the other was made of steel fiber reinforced concrete - with steel fiber volume fraction of 1.0%. Seismic behavior of the test specimens, including the failure mode, hysteretic characteristics, ductility, stiffness degradation and energy dissipation capacity were investigated. The corresponding finite element simulations, using OpenSees, were carried out and the results are compared with the experimental results. In addition, the parametric analyses of the seismic performance of hollow piers, varying the steel fiber content and transverse reinforcing ratio, were conducted based on the OpenSees analysis platform. The finite element analysis results agree well with the experimental data. The results indicate that the hysteretic characteristics, ductility and energy dissipation capacity of hollow concrete piers are improved by the addition of steel fibers, and that the steel fibers can substitute part of the transverse reinforcement in hollow piers for seismic design. (C) 2012 Elsevier Ltd. All rights reserved.