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首页> 外文会议>6th International conference on advanced composite materials in bridges and structures 2012 >FLEXURAL BEHAVIOUR OF GFRP-REINFORCED CONCRETE CONTINUOUS BEAMS
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FLEXURAL BEHAVIOUR OF GFRP-REINFORCED CONCRETE CONTINUOUS BEAMS

机译：GFRP加固混凝土连续梁的挠曲特性

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The aim of this paper is to investigate the behaviour of concrete continuous beams with domestic GFRP reinforcement. In addition authors focused on the moment redistribution effect in GFRP-reinforced concrete continuous beams. Three beams with different GFRP reinforcement configuration were examined in this paper and compared to the steel-reinforced concrete continuous beam. Concrete continuous beams were 3800 mm long with two uneven spans. One span was 2300 mm long; the other span was 1500 mm long. The cross section of the beams was 130 mm wide and 180 mm high. Point load was applied 1000 mm from the end support of the longer span. Loading was controlled by monotonic deflection increments. Point load, deflection' and all support reactions were monitored during the experimental program. Load-deflection diagrams of the GFRP-reinforced concrete continuous beams were bi-linear as GFRP rebars had no yield point and no plastic plateau. It was verified experimentally that GFRP-reinforced concrete continuous beam with reinforcement ratio 0.24, 0.43 and 0.67 is able to redistribute 32 %, 28 % and 33 % of moments, respectively. Steel-reinforced concrete beam with reinforcement ratio 0.43 was able to redistribute 52 % of moments.
机译：本文的目的是研究采用国产GFRP加固的混凝土连续梁的性能。此外，作者集中研究了GFRP增强混凝土连续梁的弯矩再分布效应。本文研究了三种具有不同GFRP加固配置的梁，并将其与钢筋混凝土连续梁进行了比较。混凝土连续梁长3800毫米，有两个不均匀的跨度。一跨度为2300毫米长；另一个跨度为1500毫米长。横梁的横截面宽130毫米，高180毫米。从较长跨距的端部支撑件1000毫米处施加点载荷。载荷由单调挠度增量控制。在实验程序中监测点载荷，挠度和所有支撑反应。 GFRP钢筋混凝土连续梁的荷载-挠度图是双线性的，因为GFRP钢筋没有屈服点且没有塑性平稳。实验证明，GFRP增强比为0.24、0.43和0.67的混凝土连续梁能够分别重新分配32％，28％和33％的弯矩。钢筋比率为0.43的钢筋混凝土梁能够重新分配52％的弯矩。

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