Computation of Impact Effect of Multi-span Beam Bridge under Light-Rail Vehicle
In this paper,the bending moment impact effect of a 7-span beam bridges under the single-carriage light-rail vehicle at different speeds is investigated.The 7-span composite box girder bridge is modelled using the shell element.The light-rail vehicle is modeled using the rigid beam and the spring-damper elements with 31 degrees-of-freedom.The vehicle-bridge interaction is modeled using the displacement contact method.The computed bending moment envelopes show that for the studied bridges under the concerned light-rail vehicle at the moving speeds from 80 km/h to 120 km/h,the impact effect on the positive bending moment of the first and the sixth span are the most notable: the impact factor will reach 1.742 for the first span and 1.508 for the sixth span.
Continuous beam Vehicle-bridge interaction Impact factor Bending moment envelope
Feng-zong GONG Zhi SUN
Department of Bridge Engineering,Tongji University,Shanghai,China State Key Laboratory on Disaster Reduction in Civil Engineering,Shanghai,China
国际会议
长沙
英文
7-11
2019-08-30（万方平台首次上网日期，不代表论文的发表时间）