Evaluation of the flexural behavior of composite beam with inverted-T steel girder and steel fiber reinforced ultra high performance concrete slab

Yoo Sung-Won; Choo Jinkyo F.

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Evaluation of the flexural behavior of composite beam with inverted-T steel girder and steel fiber reinforced ultra high performance concrete slab

机译：倒T型钢梁与钢纤维增强超高性能混凝土板组合梁的受弯性能评估

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Huge efforts have been made to develop ultra high performance concrete (UHPC) and exploit its remarkable properties. Among the achievements, various solutions were proposed to achieve optimal composite beams using steel fiber reinforced UHPC. In order to increase the economy in material, a composite beam combining a slab made of UHPC and a steel girder without top flange is proposed. In this composite beam, the inverted-T steel girder requires the studs be arranged on the web for the composition with the UHPC slab. Considering the absence of studies evaluating the flexural behavior of this new type of composite beam, this study examines experimentally the flexural behavior with respect to the stud spacing and slab thickness. To that goal, eight composite beams with varying stud spacing and UHPC slab thickness were fabricated together with two additional composite beams using slabs made of normal concrete without steel fiber reinforcement for comparison. In addition, an analysis method considering the tension softening behavior of steel fiber reinforced UHPC in the material model and the corresponding strain compatibility conditions of the beam member is proposed. The comparison of the analytic and experimental results reveals the good accuracy of the predictions indicating that the empirical tension softening curve reflects reasonably the actual behavior of steel reinforced UHPC composite member. (C) 2016 Elsevier Ltd. All rights reserved.

机译：在开发超高性能混凝土（UHPC）和开发其卓越性能方面已经做出了巨大的努力。在这些成就中，提出了各种解决方案以使用钢纤维增强UHPC来获得最佳的组合梁。为了增加材料的经济性，提出了一种组合梁，该组合梁由UHPC制成的平板和不具有顶部凸缘的钢梁组合而成。在这种复合梁中，倒T型钢梁要求将钉子布置在腹板上，以便与UHPC平板组成。考虑到缺乏评估这种新型复合梁弯曲性能的研究，本研究通过实验研究了相对于螺柱间距和板厚的弯曲性能。为了达到这个目标，使用由普通混凝土制成的无钢纤维增强的平板，制造了八种具有不同螺柱间距和UHPC平板厚度的复合梁，以及两个附加的复合梁，以进行比较。此外，提出了一种在材料模型中考虑钢纤维增强UHPC的拉伸软化行为以及梁构件相应的应变相容条件的分析方法。分析和实验结果的比较表明，预测的准确性很高，表明经验张力软化曲线合理地反映了钢增强UHPC复合构件的实际行为。（C）2016 Elsevier Ltd.保留所有权利。

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来源
《Engineering Structures》 |2016年第1期|1-15|共15页
作者
Yoo Sung-Won; Choo Jinkyo F.;
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作者单位

Woosuk Univ, Dept Civil & Environm Engn, Jinchon 355803, South Korea;

Konkuk Univ, Dept Civil Engn, 120 Neungdong Ro, Seoul 143701, South Korea;

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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
中图分类
关键词
Composite beam; UHPC deck; Inverted-T steel girder; Flexural behavior; Stud spacing; Slab thickness; Tension softening;

机译：组合梁;UHPC桥面;倒T型钢梁;抗弯性能;螺柱间距;板厚;抗拉软化;

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1. Flexural Design and Analysis of Composite Beams with Inverted-T Steel Girder with Ultrahigh Performance Concrete Slab [J] . Wonchang Choi, Youngcheol Choi, Sung-Won Yoo Advances in civil engineering . 2018,第1期

机译：超高性能混凝土板倒T型钢梁组合梁的抗弯设计与分析
2. Flexural Design and Analysis of Composite Beams with Inverted-T Steel Girder with Ultrahigh Performance Concrete Slab [J] . Choi Wonchang, Choi Youngcheol, Yoo Sung-Won Advances in civil engineering . 2018,第PTa4期

机译：超高性能混凝土板倒T型钢梁组合梁的抗弯设计与分析
3. Flexural behavior of ultra-high-performance fiber-reinforced concrete beams reinforced with GFRP and steel rebars [J] . Yoo Doo-Yeol, Banthia Nemkumar, Yoon Young-Soo Engineering Structures . 2016,第Mara15期

机译：GFRP和钢筋的超高性能纤维增强混凝土梁的抗弯性能
4. Experimental Study on Flexural Behavior of Pre-stressed Ultra-high Performance Steel Fiber Reinforced Concrete Slab for Bridge Deck [C] . Zijian LIU, Bo DIAO, Chenguang LI, COTA international conference of transportation professionals . 2012

机译：桥面板预应力超高性能钢纤维混凝土板抗弯性能的试验研究
5. Flexural behavior of steel fiber reinforced prestressed concrete beams and double Punch Test for fiber reinforced concrete. [D] . Karki, Netra Bahadur. 2011

机译：钢纤维增强预应力混凝土梁的抗弯性能和纤维增强混凝土的双冲孔试验。
6. Analysis of Residual Flexural Stiffness of Steel Fiber-Reinforced Concrete Beams with Steel Reinforcement [O] . Violetta K. Kytinou, Constantin E. Chalioris, Chris G. Karayannis 2020

机译：钢纤维加固的钢纤维混凝土梁的残余抗弯刚度分析
7. Mechanical properties of various concrete after high temperature exposure Mechanical property of various types of concrete after high temperature exposure is investigated. Considering compressive strength requirement for a vertical element in high rise building, concrete specimens with various design strengths of 35, 80, 100, and 150 MPa were tested. Particularly, the influence of incorporated steel fiber on fire resistance is of interest in this study. Experimental results show that the fire resistance depends on the design strength and steel fiber content. Normal strength concrete (NSC) of a design strength of 35 MPa or high performance concrete (HPC) of 80-100 MPa does not spall when exposed to 100-400 °C of temperature. However, an explosive spalling occurs at 300 °C when the HPCs contain 1 vol. of steel fiber. Ultra-high performance concrete (UHPC) of a design strength of 150 MPa and 1.5 vol. of steel fiber also shows dramatic spalling at 300 °C. The experimental results found in this study can contribute to a better understanding of the behaviors of HPC and UHPC under fire and the role of steel fiber on the fire resistance. [O] . 2017

机译：研究了高温暴露后各种混凝土高温曝光机械性能各种混凝土的机械性能。考虑到高层建筑中垂直元件的抗压强度要求，测试了35,80,100和150MPa各种设计强度的混凝土试样。特别是，在这项研究中，掺入钢纤维对耐火性的影响。实验结果表明，耐火性取决于设计强度和钢纤维含量。在暴露于100-400°C的温度时，80-100MPa的设计强度为35MPa或高性能混凝土（HPC）的正常强度混凝土（NSC）不会击落。然而，当HPC含有1体积的钢纤维的百分比时，爆炸性剥落发生在300℃。超高性能混凝土（UHPC）的设计强度为150 MPa和1.5 Vol。钢纤维的百分比也显示出300℃的剧烈剥落。本研究中发现的实验结果可以有助于更好地了解在火灾中的HPC和UHPC的行为以及钢纤维对耐火性的作用。

Evaluation of the flexural behavior of composite beam with inverted-T steel girder and steel fiber reinforced ultra high performance concrete slab

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