In order to reduce the impact of the construction process on the completed state of the low tower cable-stayed bridge,taking Shaying River Bridge as the engineering background,an automatic monitoring system for the construction process of the low tower cable-stayed bridge is designed.The system consists of three parts:data acquisition subsystem,data transmission subsystem and integrated monitoring cloud platform,which can realize continuous automatic monitoring of many key parame-ters,such as stress,cable force,girder deflection,tower deflection,etc.It also provides monitoring and early warning func-tions.On the basis of the automatic monitoring system,the adaptive control method is used to monitor and adjust the key pa-rameters in the construction process of the case project.The results show that:the deviation error of the cable tower is con-trolled within 5 mm,and the error of the cable force of the stay cable is controlled within±5％.There are certain errors in the deformation and stress of the main beam,but they are within the controllable range,indicating that the designed automatic mo-nitoring system has played a good auxiliary role in the construction of the low tower cable-stayed bridge.
关键词
矮塔斜拉桥/自动化监测系统/自适应控制法/索塔偏位误差/斜拉索索力
Key words
low tower cable-stayed bridge/automatic monitoring system/adaptive control method/deviation error of cable tow-er/cable force of stay cable
维普
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