Results 91 to 100 of about 1,605 (148)
Research progress of support theory and technology of the roadway surrounding rock based on the plastic zone control [PDF]
With the increasing depth of coal mining, the stability control of surrounding rock in deep roadway has become one of major problems in the mining field, and the effect of surrounding rock control in deep roadway is directly related to the safe ...
Lei FAN +3 more
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Key technologies for exploration and geological evaluation of deep carbon storage spaces [PDF]
Driven by global climate change and the “dual carbon” goals, the efficient development and safe storage of deep carbon storage spaces have emerged as a critical pathway to achieve carbon neutrality.
Bo LIU +19 more
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Jianzhu Gangjiegou Jinzhan, 2015 为考察利用钢板剪力墙耗能的自复位结构的抗震性能,通过理论分析和有限元模拟,研究钢板剪力墙厚度和钢绞线的预拉力对结构的影响。对结构受力性能进行分析,得到结构的理论复位刚度值。采用有限元对模型试件在循环荷载作用下的抗震性能进行模拟,通过对所得滞回曲线、结构耗能性能、骨架曲线、结构水平承载力、抗侧刚度及延性的分析,了解各个影响因素对结构的作用并与理论计算进行对比。结果表明:随着钢板剪力墙厚度的增加,结构在相同循环荷载作用下,每次循环的耗能量增加,承载力显著增大,延性更优,但是结构的复位能力逐渐变差 ...
朱昱, 李启才, 纪瑞
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[Initial exploration of the relationship between homeostatic occlusion and long-term dental implant stability]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiChen J, Wu L.
europepmc +1 more source
Jianzhu Gangjiegou JinzhanU形钢板阻尼器具有耗能能力良好、能够依靠自身变形耗能，以及性能稳定、制作方便、价格低廉等优点，但是也存在初始刚度小和承载能力低的问题。为此，提出一种具有T形截面的U形金属屈服阻尼器（简称阻尼器）。基于虚功原理和卡斯蒂利亚诺第二定理，建立了阻尼器的屈服承载力和初始刚度理论公式。基于非线性混合强化本构模型和三维延性断裂准则，建立了考虑材料延性断裂的阻尼器有限元模型。重点考察了阻尼器的刚度、屈服承载力、耗能能力和破坏模式等。通过参数分析量化了几何尺寸等参数对阻尼器力学性能的影响。研究表明，阻尼器在刚度 ...
邱灿星, 钱慧娟, 王苑佐
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Jianzhu Gangjiegou Jinzhan提出了一种轻钢-钢纤维再生混凝土组合柱，为研究组合柱的轴心受压性能，设计了5组不同构造短柱试件进行轴压试验，包括1组型钢试件和4组组合柱试件。以截面构造、钢纤维掺入量和再生混凝土强度为变化参数，研究不同参数对组合柱破坏特征、荷载-位移曲线、承载力、刚度、延性的影响。结果表明：提出的轻钢-钢纤维再生混凝土组合柱构造可以改善轻钢柱的稳定性能，显著提高轻钢柱的承载能力；轻钢-钢纤维再生混凝土组合柱的承载能力随着钢纤维掺入量的增加而提高，钢纤维可约束再生混凝土裂缝开展，改善试件损伤和刚度退化 ...
边瑾靓 +4 more
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[Numerical analysis research on the impact of tibial tray fixation peg structure on initial fixation stability in total knee arthroplasty]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLing Y +6 more
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[Finite element modeling and simulation study of solid-liquid biphase fiber-reinforced lumbar intervertebral disc]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiGao Y +5 more
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[Finite element analysis of tibial and femoral resection configurations on varus alignment in total knee arthroplasty]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLiang C +8 more
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Jianzhu Gangjiegou Jinzhan为量化端部加劲肋对圆高强钢管超高性能混凝土（ultra-high performance concrete filled high-strength steel tubular， UHPC-HST）柱抗震性能的影响，以加劲肋的高度、宽度、数量为参数，对8个端部带肋圆UHPC-HST柱试件进行了低周反复荷载试验，探究了各参数对试件破坏形态、滞回曲线、骨架曲线和抗震性能指标的影响规律。结果表明：各试件的滞回曲线饱满，具有良好的抗震性能，端部带肋试件的承载能力与耗能能力明显高于无肋试件的承载能力与耗能能力 ...
骆志 +5 more
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