玻璃纤维增强聚合物筋压缩和剪切性能试验研究

EXPERIMENTAL RESEARCH ON BASIC MECHANICAL PROPERTIES OF GFRP BARS

本文制备了不同直径、不同肋间距以及不同表面形式的玻璃纤维增强聚合物(GFRP)筋。在此基础上,通过玻璃纤维增强聚合物筋的压缩性能和剪切性能试验,研究GFRP筋的破坏形态和机理,分析GFRP筋直径、肋间距、表面形式以及长细比对其抗压强度和剪切强度的影响。试验结果表明,直径的变化对GFRP筋的抗压强度和剪切强度均有一定影响,肋间距和长细比的影响则不明显。

Glass fiber reinforced polymer bars with different diameters, pitches and surface forms were prepared in this paper. Through the compressive test and shear test on GFRP bars, the failure mode and mechanism of GFRP bars were researched ; the effect of diameter, pitch, surface form and slenderness ratio on compressive strength and shear strength was also analyzed. It is found that changes in diameter have a certain influence on compressive strength and shear strength of GFRP bars. Pitch and slenderness ratio have no distinct effect on mechanical properties of GFRP bars.