基于支座反力的桥梁动态称重方法
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摘要
为了解决传统基于应变的桥梁动态称重(BWIM)方法存在的精度不高和车轴探测传感器存在的可适用桥型有限、复杂工况下可靠度低的问题,提出了一种基于支座反力识别移动车辆行驶速度、轴距、轴重和总重的桥梁动态称重新方法。首先介绍了车桥耦合振动系统的建立和求解过程以及基于桥梁支座反力的车轴识别理论,建立了试验室车桥振动缩尺模型,并通过模型试验对提出方法的有效性和精度进行了验证。然后基于数值模拟,研究了路面不平整度、车辆行驶速度、噪声水平等重要因素对该方法识别精度的影响。最后,将此方法与既有基于桥梁弯曲应变的桥梁动态称重方法进行了对比。研究结果表明:该方法能够准确识别车辆的行驶速度、轴距、轴重和总重信息,模型试验和数值模拟结果均显示车辆行驶速度、轴距、轴重的识别误差能控制在5%以内,车辆总重误差能控制在2%以内;该方法的识别精度优于传统基于弯曲应变的动态称重方法,且车速越高时,该方法精度优势越明显;该方法在路面不平整、噪声等因素的干扰下仍然具有良好的稳定性。
引文
[1]吉伯海,傅中秋.近年国内桥梁倒塌事故原因分析[J].土木工程学报,2010(s1).
[2]Bao T,Babanajad S K,Taylor T,et al.Generalized Method and Monitoring Technique for Shear-Strain-Based Bridge Weigh-in-Motion[J].Journal of Bridge Engineering,2016,21(1).
[3]Moses F.Weigh-in-Motion System Using Instrumented Bridges[J].Transportation Engineering Journal,1979,105(3):233-249.
[4]Cantero D,González A.Bridge Damage Detection Using Weigh-in-Motion Technology[J].Journal of Bridge Engineering,2015,20(5).
[5]李小年,陈艾荣,马如进.桥梁动态称重研究综述[J].土木工程学报,2013(3).
[6]Zhao Z,Uddin N,O’brien E J.Bridge Weigh-in-Motion Algorithms Based on the Field Calibrated Simulation Model[J].Journal of Infrastructure Systems,2017,23(1).
[7]Deng L,Cai C S.Bridge Model Updating Using Response Surface Method and Genetic Algorithm[J].Journal of Bridge Engineering,2009,15(5):553-564.
[8]王宁波,任伟新,万华平.基于动应变的桥梁动态称重及其优化算法[J].振动与冲击,2013(4).
[9]任伟新,左小晗,王宁波,等.非路面式桥梁动态称重研究综述[J].中国公路学报,2014(7).
[10]Zolghadri N,Halling M W,Johnson N,et al.Field Verification of Simplified Bridge Weigh-in-Motion Techniques[J].Journal of Bridge Engineering,2016,21(10):04016063.
[11]赵华,谭承君,张龙威,等.基于小波变换的桥梁动态称重系统车轴高精度识别研究[J].湖南大学学报:自然科学版,2016(7).
[12]邓露,何维,王芳.不同截面类型简支梁桥动力冲击系数研究[J].振动与冲击,2015(14).
[13]Deng L,Wang F.Impact Factors of Simply Supported Prestressed Concrete Girder Bridges due to Vehicle Braking[J].Journal of Bridge Engineering,2015,20(11).
[14]庄一舟,傅公康.桥梁健康的智能测力支座.CN202492796U[P],2012.
[15]He W,Deng L,Shi H,et al.Novel Virtual Simply Supported Beam Method for Detecting the Speed and Axles of Moving Vehicles on Bridges[J].Journal of Bridge Engineering,2016,22(4).
[2]Bao T,Babanajad S K,Taylor T,et al.Generalized Method and Monitoring Technique for Shear-Strain-Based Bridge Weigh-in-Motion[J].Journal of Bridge Engineering,2016,21(1).
[3]Moses F.Weigh-in-Motion System Using Instrumented Bridges[J].Transportation Engineering Journal,1979,105(3):233-249.
[4]Cantero D,González A.Bridge Damage Detection Using Weigh-in-Motion Technology[J].Journal of Bridge Engineering,2015,20(5).
[5]李小年,陈艾荣,马如进.桥梁动态称重研究综述[J].土木工程学报,2013(3).
[6]Zhao Z,Uddin N,O’brien E J.Bridge Weigh-in-Motion Algorithms Based on the Field Calibrated Simulation Model[J].Journal of Infrastructure Systems,2017,23(1).
[7]Deng L,Cai C S.Bridge Model Updating Using Response Surface Method and Genetic Algorithm[J].Journal of Bridge Engineering,2009,15(5):553-564.
[8]王宁波,任伟新,万华平.基于动应变的桥梁动态称重及其优化算法[J].振动与冲击,2013(4).
[9]任伟新,左小晗,王宁波,等.非路面式桥梁动态称重研究综述[J].中国公路学报,2014(7).
[10]Zolghadri N,Halling M W,Johnson N,et al.Field Verification of Simplified Bridge Weigh-in-Motion Techniques[J].Journal of Bridge Engineering,2016,21(10):04016063.
[11]赵华,谭承君,张龙威,等.基于小波变换的桥梁动态称重系统车轴高精度识别研究[J].湖南大学学报:自然科学版,2016(7).
[12]邓露,何维,王芳.不同截面类型简支梁桥动力冲击系数研究[J].振动与冲击,2015(14).
[13]Deng L,Wang F.Impact Factors of Simply Supported Prestressed Concrete Girder Bridges due to Vehicle Braking[J].Journal of Bridge Engineering,2015,20(11).
[14]庄一舟,傅公康.桥梁健康的智能测力支座.CN202492796U[P],2012.
[15]He W,Deng L,Shi H,et al.Novel Virtual Simply Supported Beam Method for Detecting the Speed and Axles of Moving Vehicles on Bridges[J].Journal of Bridge Engineering,2016,22(4).