首页|采用单轮车桥耦合模型的连续梁桥动力响应研究

采用单轮车桥耦合模型的连续梁桥动力响应研究

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以某五跨连续梁桥为工程背景,采用单轮车桥耦合模型,对影响该桥动力响应的相关因素进行研究.基于ANSYS软件建立了该连续梁桥的车桥耦合模型,研究了车辆过桥速度、车辆重量和汽车悬挂弹簧刚度等三个因素对桥梁动力响应的影响.研究表明:当车速为40km/h和100 km/h时,中跨跨中的位移最大值为10.3mm和10.7 mm,说明车速对中跨跨中位移影响不明显.当车速在40 km/h和120 km/h时,中跨跨中加速度分别为0.7m/s2和2.5 m/s2,说明车速对中跨跨中加速度影响更明显;当车身重量为15t和55t时,中跨跨中的最大位移分别为0.91mm和1.07mm,最大加速度分别为0.009m/s2和2.88m/s2,说明随着车身重量的增加,中跨跨中位移和加速度都有明显增加;当汽车悬挂弹簧刚度采用初始值的0.5倍和4倍时,中跨跨中最大位移和最大加速度均为1.06 mm和2.27m/s2,说明汽车弹簧刚度的变化对中跨跨中位移和加速度几乎没有影响.
Research on Dynamic Response of a Continuous Beam Bridge Based on Single Wheel Vehicle Bridge Coupling Model
Based on single wheel vehicle coupling model,relevant factors affecting dynamic re-sponses of a five-span continuous beam bridge was studied.A vehicle bridge coupling model of the con-tinuous beam bridge was established based on ANSYS software,and the influences of three factors,in-cluding vehicle speed,vehicle weight,and suspension spring stiffness,on the dynamic response of the bridge were studied.The results show that when the vehicle speeds are 40 km/h and 100 km/h,the maximum displacements of the mid-span are 10.3 mm and 10.7 mm,indicating that the influence of vehicle speed on the mid-span displacement is not significant.When the vehicle speeds are 40 km/h and 120 km/h,the mid-span accelerations are 0.7 m/s2 and 2.5 m/s2,respectively,indicating that the vehicle speed has a more significant impact on the mid-span acceleration.When the vehicle weights are 15 t and 55 t,the maximum accelerations at the mid-span are 0.91 mm and 1.07 mm,respectively,and the maximum accelerations are 0.009 m/s2 and 2.88 m/s2,indicating that the vehicle weight has a significant effect in mid-span displacement and acceleration.When the stiffness of the vehicle suspen-sion spring are 0.5 times and 4 times of the initial value,the maximum displacement and maximum ac-celeration in the mid-span are both 1.06 mm and 2.27 m/s2,indicating that the change in vehicle spring stiffness has almost no effect on the mid-span displacement and acceleration.

continuous beam bridgesingle wheel modelvehicle bridge couplingdynamic re-sponse

常山、马露、岳鑫鑫、袁玲、孙赑

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安徽科技学院建筑学院,安徽蚌埠 233030

连续梁桥 单轮模型 车桥耦合 动力响应

2024

佳木斯大学学报(自然科学版)
佳木斯大学

佳木斯大学学报(自然科学版)

影响因子:0.159
ISSN:1008-1402
年,卷(期):2024.42(8)