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Large scale testing and analysis of hybrid concrete/composite tubes for circular beam-column applications

机译：圆形梁柱应用混合混凝土/复合管的大规模测试和分析

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Concrete-filled fiber reinforced polymer (FRP) circular tubes provide an effective structural system for a variety of applications such as piles, columns, overhead sign structures and utility poles. This paper discusses the behavior of concrete-filled Glass-FRP tubes ranging in diameter from 90 to 942 mm, using test results of eight beams, five columns and ten beam-column specimens. The effects of concrete fill, laminate structure of the tube, reinforcement ratio based on the wall thickness, as well as different failure modes are examined. Analytical models have been established and used in a parametric study to examine the effects of fiber orientation within the FRP tubes, thickness of the FRP tube, and the diameter of a central hole, which could be used to reduce the self-weight of the member. The benefits of concrete fill as well as the confinement effects have been demonstrated experimentally and analytically.
机译：填充混凝土的纤维增强聚合物（FRP）圆管为各种应用提供了有效的结构系统，例如桩，柱，高架标牌结构和电线杆。本文使用八根梁，五根柱子和十根梁柱试样的测试结果，讨论了直径在90到942 mm之间的玻璃纤维混凝土填充玻璃管的性能。研究了混凝土填充，管子的层压结构，基于壁厚的增强比以及不同破坏模式的影响。已经建立了分析模型，并将其用于参数研究中，以检查FRP管内的纤维取向，FRP管的厚度以及中心孔的直径的影响，这些可用于减少构件的自重。实验和分析已证明了混凝土填充的好处以及约束作用。

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