Results 71 to 80 of about 726 (136)

攻丝钢板高强度螺栓连接的装配式钢框架斜支撑节点受力性能分析

Jianzhu Gangjiegou Jinzhan, 2019
以攻丝钢板高强度螺栓连接的装配式钢框架斜支撑节点静力试验为基础,采用有限元分析方法,对试验过程进行非线性数值模拟与分析。研究了此节点的受力变形机理,探讨了钢材牌号、攻丝钢板厚度、斜支撑钢板厚度、螺栓孔边距、螺栓孔端距、螺栓孔中距等因素对节点受力性能的影响。分析结果表明:随着钢材牌号的增大,节点的抗滑移能力及极限承载力有明显提升,钢材牌号宜选用Q345钢及以上;当攻丝钢板厚度超过20 mm时,其极限承载力不再明显提高,因此攻丝钢板厚度建议取0.7d0～1.0d0。研究分析的结果可为工程设计提供参考依据。
许振华, 刘忠, 舒兴平, 卢倍嵘
doaj  

轴力-弯矩作用下波纹钢搭接接头力学行为数值分析

Jianzhu Gangjiegou Jinzhan
波纹钢搭接接头作为装配式波纹钢地下工程结构的薄弱环节，在轴力-弯矩作用下的力学行为亟待研究。依托前期足尺试验，结合数值模拟方法，分析了螺栓数量及波纹钢板厚度对搭接接头破坏模式和抗弯承载能力的影响机理，探讨了搭接接头的优化设计方案，建立了极限弯矩经验公式。研究结果表明：我国规范的螺栓设计安全冗余较高，接头破坏模式主要表现为受压侧波纹钢板屈曲。单波螺栓数量越多、波纹钢板越厚、轴力越小，波纹钢搭接接头的抗弯承载能力越强；单波螺栓数量每增加2个，接头极限弯矩平均增长5.9%；波纹钢板厚度每增加2 mm ...
赵国庆, 宋仁宇, 何本国, 刘金桐   +3 more
doaj   +2 more sources

《高层民用建筑钢结构技术规程》修订纪要

Jianzhu Gangjiegou Jinzhan, 2012
我国《高层民用建筑钢结构技术规程》执行的是国家抗震规范的规定,按小震弹性设计选择截面。抗震框架设计均考虑强柱弱梁要求,支撑框架柱计算长度取1.0但控制支撑保持较低应力比,抗强震时对梁柱连接加强或采用RBS连接,柱连接板焊缝端部围焊,梁腹板用螺栓连接。上、下翼缘过焊孔取相同高度。梁柱连接的计算,将梁腹板连接划分为受弯区和受剪区。高强螺栓连接计算考虑多种破坏模式。构件连接系数对不同情况区别对待。对支撑框架和钢框架-混凝土核心筒的抗震设计,分别规定了不同的框架部分的剪力分担率 ...
蔡益燕
doaj  

[Current status and future directions of stability reconstruction following spinal tumor resection]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhou J, Dong J.
europepmc   +1 more source

[Biomechanical analysis of a novel bridging plate for treating Rockwood III acromioclavicular joint dislocation]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Chen Y, Zhang G, Li S, Luo N, Zhang Y.
europepmc   +1 more source

Experimental Research on Structural Behavior of High-Strength Bolted Grouted Sleeve Flush Endplate Connections

, 2017
唐立思, 蒋首超
semanticscholar   +1 more source

[Treatment of inferior pole patellar fractures with suture anchors and headless compression screws]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wang J, Zhang W, Tian Z, Jiang Y, Yao Q.
europepmc   +1 more source

[Application of minimally invasive techniques in clinical treatment of tibial plateau fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wang Z, Zheng Z, Zhang Y.
europepmc   +1 more source

[Effect of different bone grafting methods and internal fixation on mechanical stability of Schatzker type <b>Ⅱ</b> tibial plateau fracture]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wang Z, Wang Y, Tian S, Wang Z, Zhang R, Lian X, Zheng Z, Zhang Y.   +7 more
europepmc   +1 more source

[TiRobot-assisted minimally invasive treatment of geriatric fragility fractures of the pelvis]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li C, Dai Y, Cai W, Situ X, Zeng Y, Du X, Hong S.   +6 more
europepmc   +1 more source