超韧性水泥基复合材料圆管横向压缩吸能特性

发布时间：2018-01-05 14:21

本文关键词：超韧性水泥基复合材料圆管横向压缩吸能特性　出处：《土木建筑与环境工程》2015年S2期 　论文类型：期刊论文

【摘要】：以公路护栏吸能特性为背景,对超韧性水泥基复合材料制成的圆管试件进行抗压吸能试验,研究不同配合比下各试件的抗压强度和荷载与变形能力的关系,研究纤维掺量对试件抗压强度的影响以及变形破坏和吸能特性,选出最适合的纤维掺量与配合比。试验结果表明:合理的配合比和纤维掺量使超韧性水泥基复合材料制成的圆管具有较高的抗压强度和良好的吸能能力。
[Abstract]:Based on the energy absorption characteristics of highway guardrail, the compressive energy absorption tests of round pipe specimens made of super-toughness cement matrix composites were carried out to study the relationship between compressive strength, load and deformation capacity of each specimen under different mix ratio. The effect of fiber content on the compressive strength, deformation, failure and energy absorption of the specimens were studied. The optimum fiber content and blending ratio were selected. The experimental results showed that the high compressive strength and good energy absorption capacity of the pipes made of super toughness cement matrix composites could be obtained by reasonable blending ratio and fiber content.
【作者单位】：国防科学技术大学;
【分类号】：TU528
【正文快照】： 随着中国高速公路飞速发展,公路上发生交通事故也逐年增加,其中1/3的事故是由汽车与护栏碰撞造成。国外公路交通较发达国家在高速公路出现初期对护栏结构进行研究,中国对公路护栏的研究开始于20世纪70年代,至今在研究和实践上取得了巨大进步,但从整体上与国外相比仍有不小差距

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