FUTHER INVESTIGATION ON COMPOSITE COLUMNS WITH HIGH STRENGTH STEEL AND ULTRA-HIGH STRENGTH CONCRETE

机译：高强钢超高强混凝土组合柱的进一步研究

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This paper extends the previous experimental work to investigate the behaviour of concentrically and eccentrically loaded steel tubes infilled with ultrahigh strength concrete (UHSC) with compressive strength up to 180 MPa. Both hot-finished S355 hollow tubes and welded steel box sections with S700 plates were used to prepare the long column test specimens. The cross section configurations consist of single-tube and double-tube sections infilled with concrete. Test results obtained include loaddeflection plots, maximum loads and failure modes. The maximum loads from tests were compared with Eurocode 4 predictions by extending its limitations on the material design strengths to include high strength steel S700 and UHSC C180. The paper recommends that Euvocode 4 simplified method can be used to predict the maximum resistance of the CFST columns with high strength materials, and they are feasible for use in high-rise buildings with reduced column size.

机译：本文扩展了先前的实验工作，以研究抗压强度高达180 MPa的超高强度混凝土（UHSC）填充的同心和偏心加载钢管的性能。 S355中空管的热精加工和带S700板的焊接钢制箱形截面均用于制备长柱试样。横截面配置包括填充有混凝土的单管和双管截面。获得的测试结果包括载荷挠度图，最大载荷和破坏模式。通过扩大其对材料设计强度的限制，将测试的最大载荷与欧洲规范4的预测进行了比较，以包括高强度钢S700和UHSC C180。本文建议使用Euvocode 4简化方法来预测具有高强度材料的CFST柱的最大阻力，并且在减小柱尺寸的高层建筑中使用它们是可行的。

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《International conference on advances in steel structures》|2012年|25-34|共10页
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J.Y. Richard Liew; D.X. Xiong; X. Yu;
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中图分类钢结构;
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Composite column; concrete-filled steel tube; Eurocode design; high rise construction; ultra-high strength concrete; high strength steel;

机译：复合柱;钢管混凝土;欧洲规范设计;高层建筑;超高强度混凝土;高强度钢;

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1. Experimental and analytical investigation of composite columns made of high strength steel and high strength concrete [J] . Lai Binglin, Liew J. Y. Richard, Xiong Mingxiang Steel & Composite Structures: An International Journal . 2019,第1期

机译：高强度钢和高强度混凝土复合柱的实验分析研究
2. Axial compressive behavior of FRP-concrete-steel double skin tubular columns with a rib-stiffened Q690 steel tube and ultra-high strength concrete [J] . Zeng Jun-Jie, Zheng Yu-Zhao, Long Yue-Ling Composite Structures . 2021,第Jula期

机译：钢筋混凝土钢双皮柱具有钢筋混凝土钢管Q690钢管的轴向压缩行为及超高强度混凝土
3. Mechanical behaviour of ultra-high strength concrete at elevated temperatures and fire resistance of ultra-high strength concrete filled steel tubes [J] . Xiong Ming-Xiang, Liew J. Y. Richard Materials & design . 2016,第auga15期

机译：超高强度混凝土在高温下的力学性能和超高强度混凝土填充钢管的耐火性
4. FUTHER INVESTIGATION ON COMPOSITE COLUMNS WITH HIGH STRENGTH STEEL AND ULTRA-HIGH STRENGTH CONCRETE [C] . J.Y. Richard Liew, D.X. Xiong, X. Yu International conference on advances in steel structures . 2012

机译：高强度钢和超高强度混凝土复合柱的进一步研究
5. Strengthening damaged reinforced concrete beams and slender columns using ultra-high modulus CFRP plates. [D] . Richardson, Tim. 2013

机译：使用超高模量CFRP板加固受损的钢筋混凝土梁和细长柱。
6. High Strength Concrete Columns under Axial Compression Load: Hybrid Confinement Efficiency of High Strength Transverse Reinforcement and Steel Fibers [O] . Wisena Perceka, Wen-Cheng Liao, Yo-de Wang 2016

机译：轴向压缩载荷下的高强度混凝土柱：高强度横向钢筋与钢纤维的混合约束效率
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. Ultra High-Strength Steel Fibre Reinforced Concrete. Part 1. Basic StrengthProperties of Compresit Matrix (With Review on Properties of Fibre Reinforced and High-Strength Concrete) [R] . Nielsen, C. V. 1995

机译：超高强度钢纤维混凝土。第1部分。压缩基体的基本强度性能（综述了纤维增强和高强混凝土的性能）

FUTHER INVESTIGATION ON COMPOSITE COLUMNS WITH HIGH STRENGTH STEEL AND ULTRA-HIGH STRENGTH CONCRETE

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