（1 河北工业大学, 天津 300401；  2 河北省土木工程技术研究中心， 天津 300401；3 北方工程设计研究院有限公司， 石家庄 050011）

［摘要］提出在传统销轴支座的上下耳板间距中加入叠层橡胶垫的新型销轴支座。由于传统销轴连接的研究成果不能充分适用于新型销轴支座，并且目前仍缺乏对销轴支座极限承载力的研究，主要运用试验与有限元模拟的手段研究新型销轴支座在竖向受压时的极限承载力。通过比较试验与有限元模拟得到的荷载

\|位移曲线及部分应变片的测量结果，验证了模拟过程中参数选择的合理性，表明有限元法可以较好地再现支座竖向受压的全过程反应。进一步运用有限元模拟结果分析新型销轴支座的屈服机制与失效机制，总结支座的内力分布规律与荷载传递规律；并运用有限元模拟对比新型销轴支座与传统支座在竖向压力作用下的反应。结果表明，新型销轴支座具有足够的承载能力及安全储备，到达极限状态时塑性变形明显，支座在竖向压力作用下呈现延性破坏的特征。

［关键词］销轴支座； 极限承载力； 试验； 有限元

中图分类号：TU317+.2    文献标识码：A    文章编号：1002-848X(2015)03-0068-05

Study on vertical ultimate bearing capacity  of a new pin bearing

Tian Wenling1,2, Zhang Yao1, Xing Chao3， Kong Dandan1,2, Qing Longbang1,2

 (1 Hebei University of Technology, Tianjin 300401, China; 2 Civil Engineering Technology Research Center of Hebei Province, Tianjin 300401, China; 3 Norendar International Ltd., Shijiazhuang 050011, China)

Abstract:A new pin bearing was put forward with adding laminated rubber pad in spacing of ear plates of the traditional pin bearing. The research achievements of the traditional pin connection could not be fully applied to the new pin bearing, and research on the ultimate bearing capacity of the pin bearing was lack.  The ultimate bearing capacity of the new pin bearing under the vertical compression was studied through the test and finite element simulation. The loaddisplacement curve and measurement results of parts of strain gauges obtained by the test and finite element simulation were compared to verify the rationality of selection of parameters in the simulation process and indicate that finite element method can well reproduce the whole process reaction of the bearing under vertical compression. The yield mechanism and failure mechanism of the bearing were analyzed by using finite element simulation results to summarize the internal force distribution law and load transfer law. Reactions of the new and traditional bearings under vertical compression were compared using finite element simulation method. Results show that the new bearing has enough bearing capacity and safety reserve. The plastic deformation of the bearing is obvious to reach the ultimate state. The bearing features the ductile failure characteristics under vertical compression.

Keywords:pin bearing; ultimate bearing capacity; experiment; finite element

*国家自然科学基金（51309073）。

通讯作者:张瑶，硕士, Email:18822306283@163.com。

参考文献

［1］DAVID DUERR. Pinned connection strength and behavior［J］. Journal of Structural Engineering, 2006, 132(2):182194.

［3］苏善根,许宏亮. 斜拉桥销铰连接锚固形式初探［J］.中国铁道科学, 2003,24(1):9498.

［4］王帅,赵宪忠,陈以一. 销轴受力性能分析与设计［J］. 建筑结构, 2009,39(6)：7781.

［5］李举鹏,王永新.机械销轴强度计算［J］. 机械工程师，2013(2):170172.

［6］朱浩.大型钢结构节点销轴连接接触力分布研究［D］.武汉： 武汉理工大学，2011.

［7］颜东煌,刘雪锋,田仲初,等. 销轴连接结构的接触应力分析［J］. 工程力学,2008,25(1):229240.

［8］JTJ 025—86 公路桥涵钢结构及木结构设计规范［S］.北京：人民交通出版社，1988.

［9］刘鸿文. 材料力学［M］.北京：高等教育出版社，1992.

［10］DAVID DUERR. ASME BTH1 pinned connection design provisions［J］. Journal of Structural Engineering,2008，134（2）：5358.

［11］CLINTON O REX, SAMUEL EASTERLING W. Behavior and modeling of a bolt bearing on a single plate［J］.Journal of Structural Engineering, 2003,129(6):792800.

［12］李春胜. 钢铁材料手册［M］.南昌：江西科学技术出版社，2004.

［13］余同希,章亮炽.塑性弯曲理论及其应用［M］. 北京：科学出版社，1992.