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首页> 外文期刊>Composite Structures >Mechanical performances of GFRP-steel specimens bonded with different epoxy adhesives, before and after the aging treatments
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Mechanical performances of GFRP-steel specimens bonded with different epoxy adhesives, before and after the aging treatments

机译：时效处理前后，用不同环氧胶粘剂粘合的GFRP钢试样的力学性能

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摘要

In this paper, the stiffness increase obtained by coupling steel laminates to GFRP pultruded profiles is investigated, three different epoxy adhesives were used and compared. The objective is to verify the applicability of this hybrid system in structural members for curtain walls. Three types of test were used to investigate different properties of the system: shear tests on GFRP-steel single lap joints to verify the compatibility of the bonding system; puncture tests on GFRP-steel squared tubular short profiles to evaluate the response to localized stresses; three-point bending tests on GFRP-steel squared tubular long profiles to study the resistance to flexural loads. The effects of two environmental aging, continuous condensation and UV radiations, were also analyzed. The results demonstrated the compatibility of the bonding system and the stiffness increase of GFRP profiles when the steel reinforcements are applied. The experiments also show a good agreement with analytical models of the tests, confirming the advantageous method of hybridization. With regard to artificial aging, the continuous condensation produces the worst effects on the specimens, while better results were observed after the UV radiations. The results are discussed in details in the paper. (C) 2017 Elsevier Ltd. All rights reserved.
机译：本文研究了通过将钢层压板与GFRP拉挤型材连接而获得的刚度增加，并使用了三种不同的环氧胶粘剂并进行了比较。目的是验证该混合系统在幕墙结构构件中的适用性。三种类型的测试用于研究系统的不同特性：GFRP钢单搭接接头的剪切测试，以验证粘结系统的兼容性； GFRP钢方管短型材的穿刺试验，以评估对局部应力的响应；在GFRP钢方管长型材上进行三点弯曲测试，以研究对弯曲载荷的抵抗力。还分析了两个环境老化，连续冷凝和紫外线辐射的影响。结果表明，当使用钢筋时，粘结体系的相容性和GFRP轮廓的刚度增加。实验还显示出与测试的分析模型良好的一致性，证实了杂交的有利方法。对于人工时效，连续的凝结对样品产生最坏的影响，而在紫外线辐射后观察到更好的结果。本文对结果进行了详细讨论。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Composite Structures》 |2017年第7期|145-157|共13页
  • 作者

    Giampaoli M.; Terlizzi V.; Rossi M.; Chiappini G.; Munafo P.;

  • 作者单位

    Univ Politecn Marche, Dipartimento Ingn Civile Edile & Architettura DIC, Via Brecce Bianche, I-60131 Ancona, Italy;

    Univ Politecn Marche, Dipartimento Ingn Civile Edile & Architettura DIC, Via Brecce Bianche, I-60131 Ancona, Italy;

    Univ Politecn Marche, Dipartimento Ingn Ind & Sci Matemat, Via Brecce Bianche, I-60131 Ancona, Italy;

    Univ Politecn Marche, Dipartimento Ingn Ind & Sci Matemat, Via Brecce Bianche, I-60131 Ancona, Italy;

    Univ Politecn Marche, Dipartimento Ingn Civile Edile & Architettura DIC, Via Brecce Bianche, I-60131 Ancona, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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