基于风致位移效应的斜拉桥静力抗风性能评估
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摘要
静风荷载作用下大跨桥梁结构的横向位移响应大小直接关系到桥梁结构在运营期间的安全性能。基于安装在苏通大桥斜拉桥上的结构健康监测系统,对钢箱梁跨中部位的三维风场和GPS位移进行长期监测,通过分析监测结果得到横桥向静风速值和横向静位移值的时变规律,在此基础上利用本文提出的小波包互相关系数分析法,对横桥向静风速值和横向静位移值进行同尺度小波包分解、小波包系数互相关判定和剩余小波包系数重构从而确定其主相关成分,进一步对主相关成分进行二阶傅立叶级数拟合并利用其拟合参数值的时变特征评价苏通大桥斜拉桥的静力抗风性能。研究结果表明,采用给出的小波包互相关系数法可以较好地提取出主相关成分,其拟合参数值的时变特征表明苏通斜拉桥的结构静力抗风性能处于良好状态。
The transversal displacement response for long span bridge structures under static wind loads relates directly to the safety during operation.Based on the structure health monitoring system installed on the Sutong Bridge with cable-stayed structure,three-dimensional wind field and GPS displacement are real-time monitored in the mid-span of steel box girder,then the transverse static wind velocity data and the lateral static displacement data are obtained after analysis of monitored data.On the basis of wavelet packet’s cross correlation coefficient method mentioned in this paper,wavelet packet decomposition with same scales,cross correlation judgment of wavelet packet coefficients and reconstruction of residual wavelet packet coefficients are carried out for the transverse static wind velocity data and the lateral static wind data,and their main correlative components are ascertained and further fitted utilizing second-order Fourier Series.Based on the time-varying characteristics of fitting parameter values,the lateral resistance performance of integral structure for Sutong Bridge is finally evaluated.The results reveal that the main correlative components can be better extracted by means of the wavelet packet’s cross correlation coefficient method mentioned by this paper,and the time-varying characteristics of fitting parameter values show that the static wind-resistance performance of integral structure for Sutong Bridge are in good conditions.
The transversal displacement response for long span bridge structures under static wind loads relates directly to the safety during operation.Based on the structure health monitoring system installed on the Sutong Bridge with cable-stayed structure,three-dimensional wind field and GPS displacement are real-time monitored in the mid-span of steel box girder,then the transverse static wind velocity data and the lateral static displacement data are obtained after analysis of monitored data.On the basis of wavelet packet’s cross correlation coefficient method mentioned in this paper,wavelet packet decomposition with same scales,cross correlation judgment of wavelet packet coefficients and reconstruction of residual wavelet packet coefficients are carried out for the transverse static wind velocity data and the lateral static wind data,and their main correlative components are ascertained and further fitted utilizing second-order Fourier Series.Based on the time-varying characteristics of fitting parameter values,the lateral resistance performance of integral structure for Sutong Bridge is finally evaluated.The results reveal that the main correlative components can be better extracted by means of the wavelet packet’s cross correlation coefficient method mentioned by this paper,and the time-varying characteristics of fitting parameter values show that the static wind-resistance performance of integral structure for Sutong Bridge are in good conditions.
引文
[1]Liu Yang,Yin Xinfeng,Deng Lu,etc.Ride comfort of the bridge-traffic-wind coupled system considering bridge surface deterioration[J].Wind and Structures,2016,23(1):19-43.
[2]Yu Zhiwu,Shan Zhi,Yuan Ju,etc.Performance deterioration of heavy-haul railway bridges under fatigue loading monitored by a multisensor system[J].Journal of sensors,2018.
[3]Li Shunlong,Xu Yang,Zhu Songye,etc.Probabilistic deterioration model of high-strength steel wires and its application to bridge cables[J].Structure and Infrastructure Engineering,2015,11(9):1240-1249.
[4]Bush S J W,Henning T F P,Raith A,etc.Development of a bridge deterioration model in a data-constrained environment[J].Journal of Performance of Constructed Facilities,2017,31(5).
[5]Tian Hao,Li Guoping,Chen Airong.Deterioration process assessment of prestressed concrete continuous bridges in lifecycle[J].Journal of Central South University of Technology:English Edition,2012,19(5):1411-1418
[6]Varnavina A V,Sneed L H,Khamzin A K,etc.An attempt to describe a relationship between concrete deterioration quantities and bridge deck condition assessment techniques[J].Journal of Applied Geophysics,2017,142:38-48.
[7]孙莉,刘钊.2000~2008年美国桥梁倒塌案例分析与启示[J].世界桥梁,2009,(3):46-49.
[8]Guo Weiwei,Xia He,Karoumi Raid,etc.Aerodynamic effect of wind barriers and running safety of trains on high-speed railway bridges under cross winds[J].Wind and Structures,2015,20(2):213-236.
[9]夏锦林,曹丰产,葛耀君.双开槽箱梁断面悬索桥的抗风性能及气动措施研究[J].振动与冲击,2017,36(10):69-75.
[10]Nguyen K,Camara A,Rio O,etc.Dynamic Effects of Turbulent Crosswind on the Serviceability State of Vibrations of a Slender Arch Bridge Including WindVehicle-Bridge Interaction[J].Journal of Bridge Engineering,2017,22(11).
[11]Fenerci Akesl,Oiseth,Ole,Ronnquist Anders.Longterm monitoring of wind field characteristics and dynamic response of a long-span suspension bridge in complex terrain[J].Engineering Structures,2017,147:269-284.
[12]Han Y,Chen Z Q,Hua X G,etc.Wind loads and effects on rigid frame bridges with twin-legged high piers at erection stages[J].Advances in Structural Engineering,2017,(10):1586-1598.
[13]Li Yongle,Togbenou Koffi,Xiang Huoyue,etc.Simulation of non-stationary wind velocity field on bridges based on Taylor series[J].Journal of Wind Engineering and Industrial Aerodynamics,2017,169:117-127.
[14]Xia Jinlin,Cao Fengchan,Ge Yaojun.Wind resistance performance of a double-slotting suspension bridge and its aerodynamic control measures[J].Journal of Vibration and Shock,2017,36(10):69-75.
[15]祝志文,黄炎.大跨度桥梁脉动风场模拟的插值算法[J].振动与冲击,2017,36(7):156-163.
[16]程进,肖汝诚,项海帆.大跨径斜拉桥非线性静风稳定性全过程分析[J].中国公路学报,2000,13(3):25-28.
[17]孙雪平,郑冰,胡杰.大跨度钢桁架拱桥二阶静风稳定性分析方法研究[J].公路工程,2017,42(5):337-342.
[18]张旭生.风致静动力稳定性的大跨斜拉桥设计方案比选研究[J].公路,2018,(2):111-115.
[19]王夕伟.大跨径悬索桥非线性静风失稳全过程分析[J].公路交通科技:应用技术版,2017,(4):249-251.
[20]周建,向北平,倪磊,等.基于排列熵的振动信号小波包阈值去噪研究[J].测控技术,2017,36(12):5-9.
[21]Figlus T,Liscak S,Wilk A,Lazarz B.Condition monitoring of engine timing system by using wavelet packet decomposition of a acoustic signal[J].Journal of Mechanical Science and Technology,2014,28(5):1663-1671.
[22]Fei Shengwei.Fault diagnosis of bearing based on wavelet packet transform-phase space reconstructionsingular value decomposition and svm classifier[J].Arabian Journal for Science and Engineering,2017,42(5):1967-1975.
[2]Yu Zhiwu,Shan Zhi,Yuan Ju,etc.Performance deterioration of heavy-haul railway bridges under fatigue loading monitored by a multisensor system[J].Journal of sensors,2018.
[3]Li Shunlong,Xu Yang,Zhu Songye,etc.Probabilistic deterioration model of high-strength steel wires and its application to bridge cables[J].Structure and Infrastructure Engineering,2015,11(9):1240-1249.
[4]Bush S J W,Henning T F P,Raith A,etc.Development of a bridge deterioration model in a data-constrained environment[J].Journal of Performance of Constructed Facilities,2017,31(5).
[5]Tian Hao,Li Guoping,Chen Airong.Deterioration process assessment of prestressed concrete continuous bridges in lifecycle[J].Journal of Central South University of Technology:English Edition,2012,19(5):1411-1418
[6]Varnavina A V,Sneed L H,Khamzin A K,etc.An attempt to describe a relationship between concrete deterioration quantities and bridge deck condition assessment techniques[J].Journal of Applied Geophysics,2017,142:38-48.
[7]孙莉,刘钊.2000~2008年美国桥梁倒塌案例分析与启示[J].世界桥梁,2009,(3):46-49.
[8]Guo Weiwei,Xia He,Karoumi Raid,etc.Aerodynamic effect of wind barriers and running safety of trains on high-speed railway bridges under cross winds[J].Wind and Structures,2015,20(2):213-236.
[9]夏锦林,曹丰产,葛耀君.双开槽箱梁断面悬索桥的抗风性能及气动措施研究[J].振动与冲击,2017,36(10):69-75.
[10]Nguyen K,Camara A,Rio O,etc.Dynamic Effects of Turbulent Crosswind on the Serviceability State of Vibrations of a Slender Arch Bridge Including WindVehicle-Bridge Interaction[J].Journal of Bridge Engineering,2017,22(11).
[11]Fenerci Akesl,Oiseth,Ole,Ronnquist Anders.Longterm monitoring of wind field characteristics and dynamic response of a long-span suspension bridge in complex terrain[J].Engineering Structures,2017,147:269-284.
[12]Han Y,Chen Z Q,Hua X G,etc.Wind loads and effects on rigid frame bridges with twin-legged high piers at erection stages[J].Advances in Structural Engineering,2017,(10):1586-1598.
[13]Li Yongle,Togbenou Koffi,Xiang Huoyue,etc.Simulation of non-stationary wind velocity field on bridges based on Taylor series[J].Journal of Wind Engineering and Industrial Aerodynamics,2017,169:117-127.
[14]Xia Jinlin,Cao Fengchan,Ge Yaojun.Wind resistance performance of a double-slotting suspension bridge and its aerodynamic control measures[J].Journal of Vibration and Shock,2017,36(10):69-75.
[15]祝志文,黄炎.大跨度桥梁脉动风场模拟的插值算法[J].振动与冲击,2017,36(7):156-163.
[16]程进,肖汝诚,项海帆.大跨径斜拉桥非线性静风稳定性全过程分析[J].中国公路学报,2000,13(3):25-28.
[17]孙雪平,郑冰,胡杰.大跨度钢桁架拱桥二阶静风稳定性分析方法研究[J].公路工程,2017,42(5):337-342.
[18]张旭生.风致静动力稳定性的大跨斜拉桥设计方案比选研究[J].公路,2018,(2):111-115.
[19]王夕伟.大跨径悬索桥非线性静风失稳全过程分析[J].公路交通科技:应用技术版,2017,(4):249-251.
[20]周建,向北平,倪磊,等.基于排列熵的振动信号小波包阈值去噪研究[J].测控技术,2017,36(12):5-9.
[21]Figlus T,Liscak S,Wilk A,Lazarz B.Condition monitoring of engine timing system by using wavelet packet decomposition of a acoustic signal[J].Journal of Mechanical Science and Technology,2014,28(5):1663-1671.
[22]Fei Shengwei.Fault diagnosis of bearing based on wavelet packet transform-phase space reconstructionsingular value decomposition and svm classifier[J].Arabian Journal for Science and Engineering,2017,42(5):1967-1975.