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中南大学学报(自然科学版)

Journal of Central South University

第41卷    第4期    总第194期    2010年8月

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文章编号:1672-7207(2010)04-1506-08
高性能CFRP筋混凝土柱的抗震性能
龚永智1,张继文2,蒋丽忠1,涂永明2

(1. 中南大学 土木建筑学院,湖南 长沙,410075;
2. 东南大学 土木工程学院,江苏 南京,210096
)

摘 要: 对4根CFRP筋混凝土柱进行低周反复拟静力试验,研究CFRP筋混凝土柱及其经模拟地震损伤修复后的抗震性能,分析试件的柱顶水平荷载与相应位移的滞回曲线、变形性能、耗能性能和刚度退化等特征,给出综合性能评价指标和恢复力模型及其计算方法。研究结果表明:试件具有较强的变形能力和承载能力,轴压比和体积配箍率是影响CFRP筋混凝土柱抗震性能的重要因素;传统的延性系数不能全面反映CFRP筋混凝土柱的抗震性能,综合性能指标能较好地反映轴压比和体积配箍率对CFRP筋混凝土柱抗震性能的影响。

 

关键字: CFRP筋;混凝土柱;抗震性能;综合性能指标

Aseismic behavior of concrete columns reinforced with CFRP
GONG Yong-zhi1, ZHANG Ji-wen2, JIANG Li-zhong1, TU Yong-ming2

1. School of Civil and Architectural Engineering, Central South University, Changsha 410075, China;
2. College of Civil Engineering, Southeast University, Nanjing 210096, China

Abstract:For researching the seismic resistance capability of the concrete columns reinforced with CFRP (carbon fiber reinforced polymer) tendons and those affected by the earthquake, the four concrete columns reinforced with CFRP tendons were tested under the simulated seismic loading and the hysteretic loading-drift relationships, the behavior of deformation and dissipation of energy and the degeneration of the stiffness were analyzed, and the propositional modes of restoring force and the calculation methods about the skeleton curves were proposed. The experimental results show that the influence of the level of axial compression and the volumetric ratio of hoop on the behavior of seismic resistance of the concrete columns reinforced with CFRP tendons are significant, and the specimens have good deformation and bearing capacity; the traditional ductility coefficient can not overall reflect the seismic resistance capability of the concrete columns reinforced with CFRP tendons, but the integrated performance index can reflect the influence of the level of axial compression and the volumetric ratio of hoop on the behavior of seismic resistance.

 

Key words: CFRP tendon; concrete column; seismic behavior; integrated performance index

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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