Ultra high strength concrete under concentrated loading

机译：集中荷载下的超高强度混凝土

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In this report the results of an experimental programme dealing with ultra high strength concrete under concentrated load are presented. In this programme, specimens made of plain as well as reinforced concrete using helical reinforcement were tested, whereby different specimen heights were investigated. In order to apply the stress on the specimens, cylindrical loading stamps with varying diameters were used. The main benefits of the implemented tests were the investigation of the bearing capacity and the failure behaviour of ultra high strength concrete under concentrated load, as well as the verification of an existing design rule and a recommendation of this topic. In this context, 3 different concretes were investigated in order to recognise the influence of concrete strength and composition on the load bearing behaviour as well as capacity under concentrated load.

机译：在此报告中，介绍了处理超高强度混凝土在集中载荷下的实验程序的结果。在该程序中，测试了由普通钢筋以及采用螺旋钢筋的钢筋混凝土制成的试样，从而研究了不同的试样高度。为了将应力施加到样品上，使用了具有不同直径的圆柱状压模。实施试验的主要好处是研究超高强度混凝土在集中载荷下的承载能力和破坏行为，以及对现有设计规则的验证和对此主题的建议。在这种情况下，对3种不同的混凝土进行了研究，以认识到混凝土强度和组成对承重性能以及在集中载荷下的承载能力的影响。

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来源
《International PhD Symposium in Civil Engineering vol.2; 20040616-19; Delft(NL)》|2004年|P.1461-1468|共8页
会议地点 Delft(NL)
作者
Sven Klotz; Klaus Holschemacher; Frank Dehn;
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作者单位

Leipzig University of Applied Sciences (HTWK Leipzig), Germany;

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原文格式 PDF
正文语种 eng
中图分类市政工程;
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机译：非细长超高强度混凝土柱通过普通强度混凝土楼板的轴向荷载传递
2. Strength assessment of curved steel-concrete-steel sandwich shells with bolt connectors under concentrated load [J] . Yan Chen, Wang Yonghui, Zhai Ximei, Engineering Structures . 2020,第Juna1期

机译：浓度锚固螺栓连接器的弯曲钢混凝土钢夹层壳的力量评估
3. Laminated element analysis to predict the shear strength of concrete beams under distributed and concentrated loads [J] . Kim Jong-Chan, Choi Kyoung-Kyu Engineering Structures . 2017,第deca1期

机译：层状单元分析法预测混凝土在集中荷载和集中荷载作用下的抗剪强度
4. Experimental Investigation on Ultra High-Strength Concrete under Concentrated Loading [C] . K. Holschemacher, F. Dehn, S. Klotz, SP-228; International Symposium on Utilization of High-Strength/High-Performance Concrete vol.2; 20050620-24; Washington,DC(US) . 2005

机译：集中荷载下超高强混凝土的试验研究
5. Load transfer from high-strength concrete columns through lower strength concrete slabs. [D] . Kayani, M. Khaliq-ur-Rashid. 1992

机译：从高强度混凝土柱到低强度混凝土板的荷载传递。
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）

Ultra high strength concrete under concentrated loading

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