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12篇 您的检索式:作者名="Andrew 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
2Numerical Modeling of Response and Damage of Masonry Walls to Blast Loading显示文摘To model the damage process of masonry walls under blast loading, a dynamic continuum damage material model is constructed for brick and mortar separately. The degradation of both the stiffness and strength are governed by a damage variable. By using the proposed material model, damage and fragmentation of a typical masonry wall under blast loading at different scaled distances is calculated. The hazard level of the masonry wall to blast loading is evaluated by analyzing the numerical results.DEEKS Andrew 2006Transactions of Tianjin University2006,12,B09:6
3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
4Numerical 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
5Moment transfer factors for column-supported cast-in-situ hollow core slabs显示文摘Hollow core slabs are becoming of increasing interest as the construction industry attempts to minimise the impact of its activities on the environment. By forming voids in the interior of a concrete slab, the amount of concrete used can be reduced without significantly altering the capacity of the structure. In this study, we examined the inner force transfer mechanism of a column-supported cast-in-situ hollow core slab using finite element analysis. Both a hollow core slab and the corresponding solid slab were analysed using ANSYS and the results were compared. The orientation of the tube fillers causes the stiffness of the hollow slab to be orthotropic, potentially changing the distribution of load carried in the two orthogonal directions. Both the cross-section’s moments in the column strip and near the columns in the hollow core slab become larger than that in the solid floor. As well, the cross-section’s stiffness along the tube arrangement direction is larger than that of the radial cross-section, which causes the direction along the hole of the hollow core slab to carry more moment than the radial direction. The conversion factors of the two directions are proposed from the comparison for four typical areas of the hollow core slab, as are the moment distribution coefficients.Hai-tao LI Andrew John DEEKS Li-xin LIU Dong—shengHUANG Xiao-zu SU 2012Journal of Zhejiang University-Science A(Applied Physics & Engineering)2012,13,3:4
6Long term vibration monitoring of an RC slab : Temperature and humidity effect显示文摘Yong Xia Hong Hao Giovanna Zanardo Andrew Deeks 2006Engineering Structures2006,,28:1
7Long term vibration monitoring of an RC slab: Temperature and humidity effect显示文摘Yong Xia Hong Hao Giovanna Zanardo Andrew Deeks 2005Engineering Structures2005,,3:1
8Compressive performance of laminated bamboo显示文摘Hai-tao Li Qi-sheng Zhang Dong-sheng Huang Andrew John Deeks 2013Composites Part B2013,,:1
9Substructuring Technique for Damage Detection Using Statistical Multi-Stage Artificial Neural Network显示文摘Norhisham Bakhary Hong Hao Andrew J. Deeks 2010Advances in Structural Engineering2010,,4:1
10Influence of concrete covers on tensile and compressive bond strength显示文摘Li Haitao Andrew J Deeks Su Xiaozu 2012J Huazhong Univ of Sci & Tech:Natural Science Edition2012,40,5:1
11Damage detection using artificial neural network with consideration of uncertainties显示文摘Norhisham Bakhary Hong Hao Andrew J Deeks 2007Eng Struct2007,29,1:1
12澳洲500N钢筋与混凝土受拉黏结滑移模型研究显示文摘为了研究澳洲500N钢筋与混凝土的受拉黏结滑移关系,采用分辨率较高的激光位移传感器,对一批短锚长试件进行了系列拔出试验研究,得到精确度较高的黏结滑移值及完整的试验黏结滑移关系曲线,详细描述了澳洲500N钢筋在混凝土中的受拉黏结滑移破坏全过程:弹性阶段、局部滑移阶段、滑移上升段、滑移下降段和残余段.在对试验得到的较短锚长构件拔出试验结果分析的基础之上,经统计回归和分析,提出了澳洲500N钢筋与混凝土的受拉黏结滑移连续型曲线模型,并和试验结果做了对比.李海涛 Andrew John DEEKS 苏小卒 2012建筑材料学报2012,15,3:0
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