RESEARCH AND APPLICATION OF SHEAR RESISTANCE OF FRICTION CONNECTION WITH HIGH STRENGTH BOLTS
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摘要: 通过有限元软件ABAQUS建立高强螺栓摩擦型连接的非线性有限元模型,并通过试验验证建立的有限元模型的准确性和适用性,最终建立高强螺栓摩擦型连接在摩擦阶段和滑移阶段的力-位移曲线简化模型。其意义在于:1)为结构分析人员提供较为准确的节点简化处理方法,在保证准确性的前提下,提高分析效率;2)将简化模型应用于吊车梁制动板与排架柱连接螺栓的受力分析,明确螺栓的实际受力情况,有效解决螺栓松动问题。
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关键词:
- :高强螺栓摩擦型连接 /
- 力-位移曲线 /
- 简化模型 /
- 吊车梁
Abstract: The non-linear finite element model of high-strength bolts friction type connection is established by finite element software ABAQUS, and the accuracy and applicability of the finite element model are verified by experiments. Finally, the force-displacement curve simplified model of high strength bolt friction connection in friction and sliding stages is established. Its significance lies in:1)Providing structural analysis with more accurate simplified treatment method of joints, improving analysis efficiency on the premise of ensuring accuracy; 2)Applying simplified model to stress analysis of bolts connecting brake plate and bent column of crane girder, clarifying the actual stress situation of bolts and effectively solving bolt loosening problem. -
中华人民共和国住房和城乡建设部. 钢结构设计标准:GB 50017-2017[S].北京:中国建筑工业出版社,2018. a-摩擦阶段;b-滑移阶段。图12不同螺栓直径和预紧力对应的滑移阶段最大位移(10.9级M20螺栓、芯板厚16 mm、盖板厚8 mm) Fig.12 Maximum displacement in slipping stage corresponding to different bolt diameters and pre-tightening forces Grade 10.9 M20 bolt, The thickness of core plate is 16 mm,The thickness of cover plate is 8 mm注:Nu=nμP,n为摩擦面数量;μ为抗滑移系数;P为预紧力。图13高强螺栓摩擦型连接的抗剪简化模型Fig.13 Simplified shear model for friction-type connections with high strength bolts 徐娟,时旭东. 摩擦型高强螺栓抗剪连接的螺栓单排数量和间距因素分析[J].施工技术,2006,35(5):74-76. 中华人民共和国建设部. 钢结构高强度螺栓连接的设计施工及验收规程:JGJ 82-1991[S].北京:中国建筑工业出版社,1992. 中华人民共和国建设部. 钢结构工程质量检验评定标准:GB 50221-95[S].北京:中国建筑工业出版社,1995. 田岛二郎.高强度螺栓摩擦连接概论[M].铁道部基建局编译组,译.北京:人民铁道出版社, 1978. 王萌,石永久,王元清. 高强度螺栓连接抗剪性能研究[J].建筑结构学报,2011,32(3):27-34.
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