POST BUCKLING STRENGTH OF STEEL FIBER REINFORCED CONCRETE IN-FILLED LIGHT GAUGE STEEL BOX SECTIONS -AN EXPERIMENTAL STUDY

机译：钢纤维填充轻薄钢管箱截面的屈曲后强度试验研究

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Composite columns are used extensively in modern buildings. Concrete in-filled steel tubular columns have become more popular in recent years throughout the world as they offer a number of advantages and have been used in a variety of applications. This paper presents, the state of art of post buckling strength of composite columns and the results obtained from a few experimental investigations carried out. The effect of eccentricity ratio on the ultimate strength of in filled steel box columns and the strength of the in-fills on the behavior of these sections were studied. The post buckling strength of composite columns depends on the slenderness ratio of the column, end conditions of the column, thickness of the steel box sections and the materials used as in-fills. An effort has been made to study the post buckling behavior of steel fiber reinforced concrete (SFRC) in-filled composite columns with specific grade of concrete and specific type and amount of steel fibers and the results obtained are compared with columns without infill and columns with plain concrete in-fill, under axial and uni-axial eccentric compiessive loadings. The results obtained are presented.rnThese test results demonstrate the influence of fibers on the strength and behavior of concrete in-filled composite steel box columns.

机译：复合柱广泛用于现代建筑中。近年来，填充混凝土的钢管柱由于具有许多优点并且已在多种应用中使用，因此在世界范围内变得越来越流行。本文介绍了复合柱的后屈曲强度技术现状，以及通过一些实验研究获得的结果。研究了偏心率对填充钢管箱柱极限强度和填充强度对这些截面性能的影响。复合柱的后屈曲强度取决于柱的长细比，柱的端部条件，钢箱截面的厚度以及用作填充物的材料。已努力研究具有特定等级的混凝土，特定类型和数量的钢纤维的钢纤维增强混凝土（SFRC）填充复合柱的后屈曲性能，并将所得结果与无填充柱和具有填充柱的柱进行了比较。轴向和单轴偏心组合载荷下的普通混凝土填充物。这些测试结果证明了纤维对混凝土填充的组合钢箱形柱强度和性能的影响。

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《Structural Stability Research Council 2005 Annual Stability Conference; 20050406-09; Montreal(CA)》|2005年|389-407|共19页
会议地点 Montreal(CA)
作者
S.SENTHIL SELVAN; E.CHANDRASEKARAN; R.SRINIVASARA GHA VAN; K.NA GAMANI;
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Anna University;

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正文语种 eng
中图分类结构力学;
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专利

1. Experimental study on steel tubular columns in-filled with plain and steel fiber reinforced concrete [J] . Serkan Tokgoz, Cengiz Dundar Thin-Walled Structures . 2010,第6期

机译：钢管和钢纤维混凝土填充钢管柱的试验研究
2. Experimental and Numerical Study on the Compression Behavior of Square Concrete-Filled Steel Tube Stub Columns with Steel Fiber-Reinforced High-Strength Concrete [J] . Hyung-Suk Jung, Baek-Il Bae, Hyun-Ki Choi, International Journal of Polymer Science . 2018,第1期

机译：钢纤维高强混凝土方钢管混凝土短柱受压性能试验与数值研究
3. Experimental and Numerical Study on the Compression Behavior of Square Concrete-Filled Steel Tube Stub Columns with Steel Fiber-Reinforced High-Strength Concrete [J] . Jung Hyung-Suk, Bae Baek-Il, Choi Hyun-Ki, International Journal of Polymer Science . 2018,第1期

机译：钢纤维增强高强度混凝土方形混凝土钢管柱压缩行为的实验与数值研究
4. POST BUCKLING STRENGTH OF STEEL FIBER REINFORCED CONCRETE IN-FILLED LIGHT GAUGE STEEL BOX SECTIONS -AN EXPERIMENTAL STUDY [C] . S.SENTHIL SELVAN, E.CHANDRASEKARAN, R.SRINIVASARA GHA VAN, . 2005

机译：钢纤维填充轻薄钢管箱截面的屈曲后强度试验研究
5. Experimental and numerical study of reinforced concrete columns strengthened with steel angles and strips subjected to axial loads. [D] . Gimenez Carbo, Ester. 2007

机译：角钢和带钢加强钢筋混凝土柱的轴向试验与数值研究。
6. Experimental Study on Shear Behavior of Steel Fiber Reinforced Concrete Beams with High-Strength Reinforcement [O] . Jun Zhao, Jingchao Liang, Liusheng Chu, 2018

机译：高强度钢筋钢纤维混凝土梁抗剪性能的试验研究
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。
8. Strength, and Behavior of Steel Fiber-Reinforced Concrete and Soil Structures Interaction Studies [R] . Ko, H. H. 1987

机译：钢纤维混凝土的强度，性能与土体结构相互作用研究

POST BUCKLING STRENGTH OF STEEL FIBER REINFORCED CONCRETE IN-FILLED LIGHT GAUGE STEEL BOX SECTIONS -AN EXPERIMENTAL STUDY

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