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首页> 外文期刊>The Indian concrete journal >Parametric study of carbon FRP prestressed concrete box girders
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Parametric study of carbon FRP prestressed concrete box girders

机译：碳纤维布预应力混凝土箱梁的参数研究

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This paper presents a parametric study of flexural response and forces in the post-tensioned tendons of concrete box girders reinforced and prestressed with carbon fiber reinforced polymer (CFRP) tendons. Numerical investigations have been done using a finite element method based software to study the response of the girder by varying different parameters concerning the post-tensioned or the non-prestressed tendons like the degree of prestressing, position and diameter and variation of compression reinforcement ratio. Effect of the use of hybrid FRP bars of Carbon and Glass FRP as non-prestressed bars in the beam as opposed to CFRP bars has also been studied. The primary motive was to study the variation of ductility measured in terms of energy ratio. It is observed that the energy ratio increases by 23.13% for the girder with non-prestressed hybrid FRP bars. Furthermore, there is an increase in energy ratio with increase in the compression reinforcement of the beam.
机译：本文对碳纤维增强聚合物（CFRP）筋加固和预应力的混凝土箱梁的后张筋中的弯曲响应和力进行了参数研究。使用基于有限元方法的软件进行了数值研究，通过改变有关后张或未预应力筋的不同参数（例如预应力的程度，位置和直径以及压缩增强比的变化）来研究梁的响应。还研究了将碳纤维和玻璃纤维混合FRP筋用作梁中与CFRP筋不同的非预应力筋的效果。主要动机是研究以能量比衡量的延展性变化。可以看出，对于非预应力混合FRP筋，梁的能量比提高了23.13％。此外，随着梁的压缩加强的增加，能量比也增加。

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