EXPERIMENTAL INVESTIGATION INTO THE EFFECTS OF REDUCED VERTICAL CENTRE OF GRAVITY OF AN ARTICULATED CONCRETE MATTRESS IN CURRENT FLOW

A Neville; R McLaren; J Weber; C Chin; J Binns; A Taylor

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EXPERIMENTAL INVESTIGATION INTO THE EFFECTS OF REDUCED VERTICAL CENTRE OF GRAVITY OF AN ARTICULATED CONCRETE MATTRESS IN CURRENT FLOW

机译：铰接式混凝土床垫减少垂直重心效果的实验研究

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An articulated concrete mattress model has been utilised to investigate the effects of reduced vertical centre of gravity on the stability of a 400 series block. Experimental testing was conducted at the AMC CWC, Beauty Point. To determine the effects that a reduced centre of gravity has on stability, the 3 by 3 articulated concrete mattress model was subject to pure uniform current flow. The subsequent forces were analysed with a six degree of freedom underwater force sensor. In order to gain a range of real world scenarios, the experimental model was tested at six flow angles ranging from -15 degrees through to 60 degrees, at 15 degree increments. Additionally, five fluid velocities starting at 0.6 m/s through to 1.4 m/s, at 0.2 m/s increments were investigated. These results explain how the inversion of a 400 series block increases its hydrodynamic coefficients and subsequently decreases its stability performance in current flow. Ultimately, this study provides experimental information for the installation of 400 series articulated concrete mattresses in the inverted orientation.

机译：已经利用铰接式混凝土床垫模型来研究降低垂直重心对400系列块稳定性的影响。实验测试在AMC CWC，美容点进行。为了确定减少重心对稳定性的影响，3次铰接式混凝土床垫模型较纯均匀电流。用六度自由水下力传感器分析随后的力。为了获得一系列现实世界场景，实验模型以15度的增量在-15度到60度范围内的六个流动角度测试。另外，研究了从0.6米/秒开始的五个流体速度，以0.2m / s的增量为0.2米/秒。这些结果解释了400系列块的反转如何增加其流体动力系数，随后在电流中降低其稳定性性能。最终，本研究提供了在倒置方向上安装400系列铰接式混凝土床垫的实验信息。

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《The Transactions of the Royal Institution of Naval Architects,Part A:International journal of maritime engineering》 |2017年第3期|A301-A309|共9页
作者
A Neville; R McLaren; J Weber; C Chin; J Binns; A Taylor;
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Australian Maritime College Australia;

Australian Maritime College Australia;

Australian Maritime College Australia;

Australian Maritime College Australia;

Australian Maritime College Australia;

Australian Maritime College Australia;

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1. EXPERIMENTAL INVESTIGATION INTO THE EFFECTS OF REDUCED VERTICAL CENTRE OF GRAVITY OF AN ARTICULATED CONCRETE MATTRESS IN CURRENT FLOW [J] . A. Neville, R. McLaren, J. Weber, Transactions of the Royal Institution of Naval Architects . 2017,第期

机译：铰接式混凝土床垫减少垂直重心效果的实验研究
2. Experimental investigation of parameters affecting the stability of articulated concrete block mattress under wave attack [J] . Yamini O. Aminoroayaie, Kavianpour M. R., Mousavi S. Hooman Applied Ocean Research . 2017,第期

机译：波浪攻击下铰接式混凝土砌块床垫稳定性的参数的实验研究
3. Experimental investigation of gravity and channel size effects on flow boiling heat transfer under hypergravity [J] . Fang Xiande, Tang Da, Zheng Ling, Aerospace science and technology . 2019,第Nova期

机译：超重力作用下重力和通道尺寸对流沸腾换热影响的实验研究
4. Articulated Concrete Mattress block size stability comparison in omni-directional current [C] . R W G McLaren, C Chin, J Weber, OCEANS 2016 MTS/IEEE Monterey . 2016

机译：铰接式混凝土床垫块在全向电流下的尺寸稳定性比较
5. Experimental results on gravity driven fully condensing flows in vertical tubes, their agreement with theory, and their differences with shear driven flows' boundary-condition sensitivities. [D] . Kurita, Jorge H. 2011

机译：垂直管中重力驱动的全凝结流的实验结果，与理论的吻合以及与剪切驱动的流的边界条件敏感性的差异。
6. Experimental investigation of frequency and amplitude of density wave oscillations in vertical upflow boiling [O] . Lucas E. O’Neill, Issam Mudawar, Mohammad M. Hasan, -1

机译：垂直向上沸腾中密度波振荡频率和振幅的实验研究
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. Effects of Surface Texture of Articulated Concrete Mattress Blocks on TheirHabitat Value. Lower Mississippi River Environmental Program Report 19 [R] . Way, C. M., Miller, A. C., Bingham, C. R., 1992

机译：铰接混凝土床垫块表面纹理对其居住价值的影响。密西西比河下游环境计划报告19

EXPERIMENTAL INVESTIGATION INTO THE EFFECTS OF REDUCED VERTICAL CENTRE OF GRAVITY OF AN ARTICULATED CONCRETE MATTRESS IN CURRENT FLOW

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