波形钢腹板箱梁桥车桥耦合振动冲击系数研究

Study on impact coefficient of coupling vibration of vehicle bridge girder bridge with corrugated steel web box

以实际工程背景泼和大桥为实例,分析了车速、路面不平顺、桥梁结构阻尼对连续梁桥冲击系数值的影响,分析结果表明,随着车速的增加,桥梁动挠度及冲击系数值有增大趋势;路面不平顺是影响车桥耦合振动值的主要因素之一,随着路面状况的恶化,桥梁动挠度值明显增大;桥梁结构阻尼能在一定程度上减小桥梁冲击系数值。

Based on the actual engineering background river bridge as an example, analyzed the speed, the road is not smooth, bmdge structure damping on the impact coefficient value of continuous girder bridge. Calculation results show that with the increase of speed, bridge dynamic de- flection, impact coefficient values are increasing trend. Road surface irregularity is one of the main factors influencing vehicle bridge coupling vi- bration is worth, with deterioration of road, bridge dynamic deflection value increased obviously. Bridge structure damping can be reduced to a certain extent impact coefficient values.