The Hinged Rocker bearings are used on railway bridge at 20m ~ 32m, in recent years, some bearings appear hazards while using, mainly resulting bearing’s axial endplay or channeling which make parts of the bearing out of work under the transversal force , and leave security risk to the operate of the railway bridge, urgent needed to be reset. In this paper, numerical calculation and experimental study are done. By coupling vehicle-bridge vibration analysis, the maximum of transverse force of the bearing is 160kN, and by finite element analysis, bearing’s axial endplay need the transverse force to be 139kN, and by in-site testing, bearing’s axial reset need the transverse force to be 190kN~210kN，which explain the cause of the hazard occurs, also suggest that the possibility of bearing’s axial reset. According to the results of calculation and experiment, a simple high rigidity axial endplay automatic reset equipment is introduced to eradicate the hazards ,and the equipment can be installed at the time of operation of railway without adverse effect.
Key words
hinged rocker bearing /
axial endplay /
automatic reset equipment
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
［1］ 庄军生．桥梁支座[M]．北京：中国铁道出版社，2008．
［2］ 张勇，侯广伟等.既有铁路桥梁支座病害调查及原因分析[J].铁道建筑，2011 （12）：51-53.
(Zhang yong,Hou Guang-wei. Investigation and Analysis of Diseases of the Railway Bridge Bearings [J], Railway Engineering,2011(12):51-53.in chinese)
［3］ 张常勇,钟铁毅等.铁路连续梁桥横向减隔震支座参数研究[J].中国铁道科学,2011,32(4):19-23.
(Zhang Chang-yong,Zhong Tie-yi. Study on the Parameters of the Transverse Seismic Isolation Bearings of Railway Continuous Beam Bridge[J], China Railway Science,2011,32(4):19-23.in chinese)
［4］ 夏禾，张楠.车辆与结构动力相互作用（第二版）[M].北京：科学出版社，2005.
［5］ 郭薇薇, 夏禾, 李慧乐, 张田. (2012). 铁路新型钢-混凝土组合桁架桥在列车作用下的动力响应分析 [J]. 振动与冲击, 31(4): 128-133.
（Guo Wei-wei, Xia He, Li Hui-le. Dynamic analysis of a new type of railway steel-concrete composite trussed bridge under running trains excitation[J],Journal of vibration and shock,2012,31(4):128-133.in Chinese）
［6］ 郭薇薇, 夏禾, De Roeck Guido. (2013). 意大利铁路Sesia大桥的动力特性及车桥耦合振动分析 [J]. 振动与冲击, 32(15): 82-88.
（Guo Wei-wei, Xia He, De Roeck Guido . Dynamic characteristics and coupling vehicle-bridge vibration analysis of the high speed railway Sesia Bridge in Italy[J],Journal of vibration and shock,2013,32(15):82-88.in Chinese）
［7］ 成大先．机械设计手册（第5版）[M]．北京：化学工业出版社，2008．
{{custom_fnGroup.title_en}}
Footnotes
{{custom_fn.content}}
PDF(1485 KB)
