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首页> 外文会议>SP-230; International Symposium on Fiber-Reinforced Polymer(FRP) Reinforcement for Concrete Structures; 20051106-09; Kansas City,MI(US) >Tension Stiffening Behavior of GFRP-Reinforced Concrete
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Tension Stiffening Behavior of GFRP-Reinforced Concrete

机译：GFRP增强混凝土的抗张刚度

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摘要

This paper presents an experimental study into the structural response of Glass Fiber Reinforced Polymers Reinforced Concrete (GFRP-RC) tension members. The influence of concrete strength, reinforcement ratio and bar diameter on tension stiffening is investigated by testing elements in direct tension. Using bars specially manufactured with internal strain gauges, typical strain patterns occurring between cracks during direct tension tests were measured and bond stresses derived, thereby obtaining the information for modeling tension stiffening behavior of GFRP-RC. An increase in the tension stiffening behavior with decrease in reinforcement ratio and increase in concrete strength was observed. No appreciable change in tension stiffening was recorded with changes in bar diameter at constant reinforcement ratio. This paper also discusses the limitations that may be encountered in modifying current models to represent the tension stiffening effect of GFRP-RC.
机译：本文对玻璃纤维增​​强聚合物钢筋混凝土（GFRP-RC）受拉构件的结构响应进行了实验研究。通过直接拉伸试验元件研究了混凝土强度，钢筋配比和钢筋直径对拉伸刚度的影响。使用专门制造的带有内部应变仪的钢筋，测量直接拉伸试验期间在裂纹之间出现的典型应变模式，并推导粘结应力，从而获得用于建模GFRP-RC的拉伸刚度行为的信息。观察到随着增强比的降低和混凝土强度的增加，抗拉刚度行为增加。在恒定的增强比下，随着钢筋直径的变化，没有发现拉伸强度的明显变化。本文还讨论了在修改当前模型以表示GFRP-RC的拉伸刚度效果时可能遇到的局限性。

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