滨州黄河公路大桥结构健康监测系统 31页

Shandong Binzhou Yellow River Highway Bridge Structural Health Monitoring Shandong Binzhou Yellow River Highway Bridge Three towers, four spans 84+300+300+84m PC structure Rigid and floating support Open to traffic: July 1, 2004 Health Monitoring System 138 optical fiber strain & temperature sensors 2 anemoscopes 39 accelerometers 1+3GPS Wireless communication LabVIEW data acquisition Damage detection-MATLAB Structural analysis- ANSYS 7.2 SQL server 2000 database- Website visitor permitted LabVIEW software platform on-line automatically running & call 1. Sensor sub-system 1 2 14 4 5 6 8 7 9 11 12 13 10 Binzhou 15 16 Tower near the joints Girder 1) Optical fiber sensors Sensor Sensor Locations Initial wave length Initial T 2) Accelerometers C able- 2D and 1D P iezo-electric accelerometers (0.1-50Hz), 2Hz T ower-2D S ervo accelerometers (0-30Hz), 0.17Hz G irder-3D, 2D and 1D C apacitive accelerometers, 0.25Hz No. （ 1 ） （ 2 ） （ 3 ） （ 4 ） （ 5 ） （ 6 ） （ 7 ） （ 8 ） （ 9 ） （ 10 ） Member J10 J12 N26 N24 N22 N20 N18 N16 N14 N12 Parameter (cm) 13.21 15.69 15.69 14.04 14.10 14.16 14.04 14.01 13.46 12.83 Type LC0156TM LC0156TM LC00131M LC0156TM LC0156TM LC0156M LC0156M LC0156M LC0156M LC0156M No of sensor 2782 2786 2859 2788 2789 2792 2868 2871 2872 2873 Length of cable/ m 263(268) 250(250) 225×2(225,227) 210(215) 185(187) 180(183) 165(165) 150(155) 135(136) 110(110) Type of cable single single single single single single single single single single No （ 11 ） （ 12 ） （ 13 ） （ 14 ） （ 15 ） （ 16 ） （ 17 ） （ 18 ） （ 19 ） （ 20 ） member N10 SB0’ SB0 SB5 mid Mid CB13 CB8 CB3 M-Tower Parameter (cm) 12.73 / / / / / / / / / type LC00131M LC0156M LC0156M LC0156M B-one-D B-two-D B-one-D LC0156M LC0156M B-two-D No of sensor 2861 2877 2878 2879 2880 2883 Length of cable/m 105×2(105,105) 390(400) 340(350) 275(276) 225 175×2 130 95(80) 55(55) 125×2 Type of cable single single single single single single single single single single No （ 21 ） （ 22 ） （ 23 ） （ 24 ） （ 25 ） （ 26 ） （ 27 ） （ 28 ） （ 29 ） （ 30 ） Member J10 J12 N26 N24 N22 N20 N18 N16 N14 N12 Parameter /cm 13.21 15.69 15.69 14.04 14.10 14.16 14.04 14.01 13.46 12.83 Type of sensor LC0156TM LC0156TM LC00131M LC0156TM LC0156TM LC0156M LC0156M LC0156M LC0156M LC0156M No of sensor 2885 2886 2862 2887 2888 2891 2892 2893 2894 2896 Length of cable/m 303/313 290/300 265×2(269,272) 250/250 225/228 220/225 205/215 190/195 175/177 150/155 Type of cable single single single single single single single single single single 3) Anemoscopes 3D ultrasonic 81000U (USA) WE550 turboanemoscope 4) 1+3GPS Bank Topcon 2. Communication sub-system 1) Cable communication 2) Wireless communication GPS wireless communication Antenna + network card + network bridge GPS receiver Beam antenna Directional antenna beam antenna Beam antenna Beam antenna Beam antenna beam antenna isotropic antenna Remote control center Local control center 3. Data acquisition sub-system LabVIEW software (NI,USA) NI (USA) and Advantech (Taiwan) PXI bus-mastering and RS-485 bus mastering Data acquisition software 4. Damage detection & safety evaluation sub-system 1) Finite element model 2) Modes & frequencies Mode Tower Transverse Vertical Torsion 1 0.171 0.862 0.220 0.363 2 0.173 0.985 0.490 0.788 3 0.506 0.576 0.941 3) Response 4) Damage detection-global Damaged girder Close location Close location Close location 40 measurable locations 10 measurable locations 4) Damage detection-local Strain, stress, crack, deflection, acceleration > Corresponding limitation? Change rate of above variables Large Too Stress and number Fatigue damage? — 5. Database sub-system Structure Analysis Data Process Data Acquire Data Inquire SQL Server 2000 Data Intranet Database Server center Inquire, print, show Load Measured response Structure and sensor Dynamics Healthmodels Damage models Safety evaluation Database Data Base Inquire 打印 Copy Virus User Diary Data repair Safety means for data Safety 6. Control center （ a ）系统首页界面 （ b ）系统功能区界面 （ c ）数据采集系统界面 Integrated system based-on website THANK YOU!