Vehicle carrying safety assessment for highway grillage narrow bridge considering lumped plasticity

• 作 者: Y.Zhang[1]Z.Sun[2]dddd[3]
• 机 构: Department of Bridge Engineering,Tongji University,Shanghai,China & Henan Provincial Communications
• 出 处: The 7th International Conference on Bridge Maintenance, Safe
• 发表日期: 2014年期

　　This paper proposes to assess the vehicle carrying safety of in-service highway grillage girder bridge considering structure redtmdancy and lumped plasticity of components under bending.The highway bridge considered is a two-lane simply-supported RC bridge composed of 5 main girders and 5 diaphragms.The structure is modeled as a grillage girder system and all of its main girders and diaphragms are modeled as 6DOF grid elements.The vehicle load on each lane is modeled to be the summation of a uniform distributed force and a concentrated force.