Shear Strengthening of Reinforced Concrete Beams Using Externally Applied Composite Fabrics
Shear Strengthening of Reinforced Concrete Beams Using Externally Applied Composite Fabrics
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DOI：
10.14359/1130
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发表时间：
1995-05
影响因子：
1.8
通讯作者：
M. Chajes;Ted F. Januszka;D. Mertz;T. A. Thomson;W. Finch
中科院分区：
文献类型：
--
作者：
M. Chajes;Ted F. Januszka;D. Mertz;T. A. Thomson;W. Finch
本文描述了一项对12根低配筋混凝土T形梁的研究，对这些梁进行试验是为了确定使用外贴复合织物作为提高梁抗剪能力的一种方法的有效性。由芳纶、无碱玻璃和石墨纤维制成的编织复合织物使用双组分环氧树脂粘贴在T形梁的腹板上。选择这三种不同的织物是为了能够对各种织物的刚度和强度进行研究。这些梁进行了受弯试验，并且将8根带有外部抗剪加固的梁的性能与4根没有外部加固的对照梁的结果进行了比较。所有的梁都因剪切破坏，并且那些带有复合加固的梁表现出了优异的粘结特性。对于带有外部加固的梁，其极限强度提高了60%到150%。
This paper describes a study of 12 under-reinforced concrete T-beams that were tested to determine the effectiveness of using externally applied composite fabrics as a method of increasing a beams's shear capacity. Woven composite fabrics made of aramid, E-glass, and graphite fibers were bonded to the web of the T-beams using a two-component epoxy. The three different fabrics were chosen to allow various fabric stiffnesses and strengths to be studied. The beams were tested in flexure, and the performance of eight beams with external shear reinforcement was compared to results of four control beams with no external reinforcement. All the beams failed in shear and those with composite reinforcement displayed excellent bond characteristics. For the beams with external reinforcement, increases in ultimate strength of 60 to 150 percent were achieved.