Results 81 to 90 of about 1,466,665 (125)

钢塔-组合塔混合结构结合部承载性能试验研究

Jianzhu Gangjiegou Jinzhan
针对新型钢塔-组合塔混合结构结合部构造，开展了局部缩尺模型轴压试验，并建立了非线性有限元模型与试验结果进行比较。研究了钢塔-组合塔结合部的极限承载力以及破坏形式，探究了钢板应变分布规律和焊钉受力分布规律，并对传力路径和荷载分担比例进行了变参数分析。研究结果表明：新型钢塔-组合塔混合结构结合部的承载力符合设计要求；结合部的破坏形式表现为承压板下方钢壁板达到屈服并发生鼓曲变形；承压板为结合部的核心传力构件，增大板厚可以提高结合部承载力以及承压板所传递的荷载，其厚度宜与外壁钢板厚度相近 ...
高晓沛, 张伟, 康福军, 朱尧于, 刘玉擎   +4 more
doaj  

[Changes in knee kinematic parameters and plasma inflammatory factors at different stages after anterior cruciate ligament injury]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wei X, Zhang Y, Xue S, Sun Y, Qi C, Fu H.   +5 more
europepmc   +1 more source

7075-T6高强铝合金方管轴心受压承载能力研究

Jianzhu Gangjiegou Jinzhan
为了研究7075-T6高强铝合金方管的轴心受压承载力，制作了9个试件进行轴心受压试验，得到了试件的极限承载力、破坏模式和荷载-轴向位移曲线。进行了试件的有限元数值分析，并将数值分析结果与试验结果对比，验证了有限元数值分析的准确性。采用有限元数值分析进行参数分析，获得了适用于7075-T6高强铝合金方管构件的整体稳定系数-相对长细比曲线，讨论了当相对长细比变化时局部屈曲对承载力的影响。结果表明，7075-T6高强铝合金方管具有一定的延性；建立的有限元模型可以精确模拟试件加载的全过程以及极限承载力 ...
刘均利, 黎海霖, 安永昌, 杜熙, 吕涛, 项光韬   +5 more
doaj  

[Anterior cruciate ligament reconstruction with double-bundle artificial ligament based on four-dimensional impingement free mechanism: a comparative study with single-bundle reconstruction]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li S, Yang K, Zhuang W, Lu W.
europepmc   +1 more source

冷弯薄壁型钢部分包裹轻骨料混凝土L形角柱受压性能研究

Jianzhu Gangjiegou Jinzhan
本文针对冷弯薄壁型钢构件局部易屈曲和轻骨料混凝土易开裂等技术难题，创新性地提出一种可预制装配的冷弯薄壁型钢部分包裹轻骨料混凝土L形角柱（简称L形PEC柱）。设计了2根L型钢柱和4根L形PEC柱试件，系统探究了填充轻骨料混凝土与缀条间距对构件力学性能的影响机制。结果表明：填充轻骨料混凝土可显著抑制型钢屈曲变形，使屈曲承载力提升737.08%；缀条间距对轴压/偏压试件峰值荷载及初始刚度影响不明显，但能一定程度上延缓试件变形。结合试验结果验证了ABAQUS有限元模型的准确性与可靠性 ...
陈明, 崔琦, 吴若一, 胡方琪, 贺国强, 李补拴   +5 more
doaj  

[Application of transverse tibial axis reference method in rotational positioning of femoral prosthesis in total knee arthroplasty]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wei X, Wei Q, Yang H, Hao L, Zhang H, Yin Z, Li Y.   +6 more
europepmc   +1 more source

[Effectiveness comparison of one-hole split endoscopy and unilateral biportal endoscopy discectomy via the superior articular process approach for L ₅, S ₁ far lateral lumbar disc herniation]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li X, Sun N, Sun Z, Li S, Qi G.
europepmc   +1 more source

[Effect of posteromedial tibial plateau osteophytes on joint gap balance during robot-assisted total knee arthroplasty]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Ma P, Liu Y, Liu Y, Lü J, Liu F.
europepmc   +1 more source

[Expert consensus on clinical pathway for high-conformity total knee arthroplasty through a minimally invasive surgical approach]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Expert Consensus Development Group On Clinical Pathways For High-Conformity Total Knee Arthroplasty Through A Minimally Invasive Surgical Approach, Project Team Of The Application Demonstration Of Laser Additive Manufacturing For High-Conformity Total Knee Arthroplasty A Key Project Under The National Key Research And Development Program Of China For Additive Manufacturing And Laser Manufacturing Fis.   +1 more
europepmc   +1 more source

[Comparative observation of analgesic efficacy between liposomal bupivacaine and "cocktail" therapy following artificial intelligence-assisted direct anterior approach total hip arthroplasty: A prospective randomized controlled study]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhai Y, Cao X, Zheng S, Chen Z, Hou X, Zhang T, Zhang C, Xia T, Shen J.   +8 more
europepmc   +1 more source