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342篇 您的检索式:作者名="J Deeks"
    题名 作者 年代 出处 被引量
1保护层厚度对受拉与受压粘结强度的影响显示文摘针对不同混凝土保护层厚度,分别进行了12个拔出试验和18个推出试验,并对试验结果进行了对比与分析.结果表明:当保护层厚度较小时,无论是拔出试件还是推出试件,均发生劈裂破坏;当保护层厚度较大时,推出试件钢筋被缓缓推出,混凝土没有开裂;增加混凝土保护层厚度既可以提高钢筋的受拉粘结强度,也可以提高钢筋的受压粘结强度;混凝土保护层厚度在一定限值范围内对钢筋受拉粘结强度影响较大.李海涛 Andrew J Deeks 苏小卒 黄东升 2012华中科技大学学报(自然科学版)2012,40,5:6
2中欧美拉伸锚固长度比较研究显示文摘对中欧美规范中拉伸锚固长度的定义和计算公式进行了比较,并选取不同工况,重点考虑了钢筋间距和直径、混凝土强度和保护层厚度的影响,用规范公式对梁和板中的锚固长度进行了计算分析。通过对比发现,在几种主要因素影响下,Eurocode 2锚固长度曲线变化趋势和极限锚固长度曲线变化趋势整体上比较接近。当考虑钢筋间距和直径的影响时,在梁中和板中,GB 50010—2002的变化趋势和Eurocode 2比较相似,值也比较接近。在考虑混凝土强度和保护层厚度时,GB 50010—2002精细方法计算值在影响因素取值较大时,对于板来说偏保守,建议取个适当的折减系数。ACI318-05多数因素影响下均偏保守,建议考虑相应因素的影响时取合适的折减系数。李海涛 苏小卒 Andrew J DEEKS 2010结构工程师2010,26,3:6
3Numerical Simulations of the Performance of Steel Guardrails Under Vehicle Impact显示文摘Road side barriers are constructed to protect passengers and contain vehicles when a vehicle crashes into a barrier. In general, full-scale crash testing needs to be carried out if a geometrically and structurally equivalent barrier has not previously been proven to meet the requirements of containing the vehicle and dissipating sufficient impact energy for passenger protection. As full-scale crash testing is very expensive, the number of data that can be measured in a test is usually limited, and it may not always be possible to obtain good quality measurements in such a test, a reliable and efficient numerical simulation of crash testing is therefore very useful. This paper presents finite element simulations of a 3-rail steel road traffic barrier under vehicle impact. The performance levels defined in Australian Standards AS5100 Clause 10.5 for these barriers are checked. The numerical simulations show that the barrier is able to meet low performance levels. However, the maximum deceleration is higher than the acceptable limit for passenger protection. If present, a kerb launches the vehicles into the barrier, allowing for the possibility of overriding the barrier under certain circumstances, but it redirects the vehicle and reduces the incident angle, which reduces impact force on the barrier. Further investigation into all common kerb profiles on roads should be carried out, as only one kerb profile is investigated in this study.HAO Hong DEEKS J Andrew WU Chengqing 2008Transactions of Tianjin University2008,14,5:4
4Analytical modeling of hammer impact for pile driving显示文摘Deeks A J Randolph M F 1993International Journal for Numerical and Analytical Methods in Geomechanics1993,17,5:2
5Axisymmetric time-domain transmitting boundaries显示文摘Deeks A J Randolph M F 1994Journal of Engineering Mechanics1994,120,1:1
6Axisymmetric Time-domain Transmitting Boundaries 显示文摘Deeks A J RandolPh M F 1994Journal of Engineering Mechanics ASCE1994,120,1:1
7A systematic review of rapid di- agnostic tests for the detection of tuberculosis infection 显示文摘Dinnes J Deeks J Kunst H 2007Health Technol Asses2007,11,3:1
8A systematic review of rapid diagnostic tests for the detection of tuberculosis infection 显示文摘J Dinnes J Deeks H Kunst 2007Heahh Technology Assessment2007,11,3:1
9Statistical heterogenei- ty in systematic reviews of clinical trials: a critical appraisal of guidelines and practice显示文摘H iggins J Thompson S Deeks J 2002J Health Serv Res Policy2002,7,:1
10Axisymmetric time-domain transmitting boundaries显示文摘Deeks A J Randolph M F 1994Journal of Engineering Mechanics1994,120,1:1
11Measuring inconsistency in meta-analyses 显示文摘Higgins JP Thompson SG Deeks J J 2003BMJ2003,327,:1
12A scaled boundary finite element method for cyclically sym- metric two-dimensional elastic analysis显示文摘He Y Q Yang H T Xu M Deeks A J 2013Computers Structures2013,120,:1
13Measuring inconsistency in meta-analyses 显示文摘Higgins J P Thompson S G Deeks J J 2003British Medical Journal2003,32,7:1
14Eradication of helieobaeter pylori for non-ulcer dyspepsia 显示文摘MOAYYEDI P SOO S DEEKS J 2005Coehrane Database Syst Rev2005,19,02:1
15Measuring incon sistency in Meta analyses显示文摘Higgins J P Thompson S G Deeks J J 2003BMJ2003,327,7414:1
16Potential flow around obstacles using the scaled boundary finite element method显示文摘Deeks A J Cheng L 2003Int J Numer Mech Fluids2003,41,:1
17Analytical modeling of hammer impact for pileriving显示文摘Deeks A J Randolph M F 1993International Journal for Numerical and Analytical Methods in Geomechanics1993,17,2:1
18Beds,mattresses and cushions for pressure sore prevention and treatment显示文摘 Deeks J sheldon T A 2000Cochrane Database Syst Rev2000,2,00:1
19Axisymmetric Time-domain Transmitting Boundaries 显示文摘Deeks A J Randolph M F 1994Journal of Engineering Mechanics1994,120,1:1
20Axisymmetric time-domain transmitting boundaries显示文摘Deeks A J Randolph M F 1994Journal of Engineering Mechanics1994,120,1:1
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