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基于组件法的栓焊节点高温力学模型

Jianzhu Gangjiegou Jinzhan
钢框架梁柱连接节点的高温力学性能是影响火灾下钢框架结构抗连续倒塌性能的关键因素之一。基于组件法，将栓焊节点分解为翼缘拉压组件、连接板螺栓孔承压组件、螺栓受剪组件、梁腹板螺栓孔承压组件和螺栓滑移组件等基本组件，并分别对各组件的等效弹簧力学模型开展理论推导，最终建立了栓焊节点高温组件模型。基于已开展的栓焊节点抗火试验，构建了节点整体受力分析杆系模型，并通过对比有限元结果和试验结果，验证了组件模型的有效性和准确性。研究结果表明 ...
李永梅, 丁润民, 刘美景, 范圣刚   +3 more
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[Effectiveness of composite loop plate around coracoid process for reconstructing coracoclavicular ligament in treatment of Rockwood type <b>Ⅲ</b> acute acromioclavicular joint dislocations]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
He H, Li N, Liu M, Wang H, Wang Q, Zhang Y.   +5 more
europepmc   +1 more source

[Application progress of customized steel plates in osteotomy and orthopedic treatment of knee osteoarthritis]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Jia J, Ma J, Ma X.
europepmc   +1 more source

[Advances in early repair and reconstruction of severe limb injuries]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Xu Y.
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[Comparative study on effectiveness of clavicular hook plate fixation in treatment of acromioclavicular joint dislocation and distal clavicle fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wu S, Liu J, Wei H, Fang K, Xie Y, Zheng L, Lin J, Lin J.   +7 more
europepmc   +1 more source

薄钢板机械咬合螺栓抗剪连接试验与计算方法

Jianzhu Gangjiegou Jinzhan
为探究薄钢板机械咬合螺栓抗剪连接的受力性能，设计了12个具有不同垫圈形状和预拉力的机械咬合螺栓连接试件和普通螺栓连接试件，并开展了受剪破坏试验。试验结果表明机械咬合螺栓连接试件的薄钢板在咬合部位发生受拉破坏，而普通螺栓连接试件的薄钢板出现孔壁承压破坏，且机械咬合螺栓连接的受剪承载力显著高于普通螺栓连接的受剪承载力。分别建立了机械咬合螺栓连接和普通螺栓连接的精细有限元模型，根据受剪试验结果验证了模型的准确性，进一步探究了垫圈直径、螺栓直径、钢板厚度和咬合深度对机械咬合螺栓连接受剪承载力的影响规律 ...
袁焕鑫, 邱鑫, 杜新喜
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[Analysis of recurrent cervical abscess: a case report]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Wang J, Wang H, Sun M, Zhang E, Zhang Z.
europepmc   +1 more source

[Applications of molecularly imprinted solid-phase microextraction coupled with chromatography/mass spectrometry for determination of drug residues]. [PDF]

Se Pu
Yan J, Huang J, Peng S, Man M, Sun D, Liu P, Chen L, Li J, Fan H.   +8 more
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[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

T形头单向螺栓连接T形件-钢管节点抗拉性能研究

Jianzhu Gangjiegou Jinzhan
新型T形头单向螺栓能够有效解决传统高强螺栓无法直接应用于端板连接钢梁-钢管柱节点的问题，且其施工较为简便。然而，采用此类新型螺栓连接的梁柱节点中各组件承载机理尚不明确，有待进一步研究。传统高强螺栓连接梁柱节点与T形头单向螺栓连接节点的主要不同之处在于端板及钢管柱壁上的螺栓孔形状。为探究此类新型连接节点中钢管组件的力学响应与承载机理，本文基于组件法，通过有限元分析软件ABAQUS对T形件-钢管节点的抗拉性能开展了系统的数值分析。首先建立了精确的节点三维有限元模型，研究了T形头单向螺栓连接T形件 ...
董鹏刚, 孙乐乐, 张晋, 王思琦
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