甘艳,周文峰,杜志叶,邹建明,张力.地沉降工况下杆塔应变实时监测与失效预警技术研究*[J].电测与仪表,2019,56(20):9-16. GAN Yan,ZHOU Wenfeng,DU Zhiye,ZOU Jianming,ZHANG Li.Tower strain real-time monitoring and failure warning technology research under land subsidence condition[J].Electrical Measurement & Instrumentation,2019,56(20):9-16.
地沉降工况下杆塔应变实时监测与失效预警技术研究*
Tower strain real-time monitoring and failure warning technology research under land subsidence condition
Factors such as crustal movement and land subsidence will cause changes in the tower foundation, which seriously affect the safety of transmission line operation. Taking a 500kV dangerous tower as an example, this article establishes a precise tower-line system which based on finite element method. By simulating the stress distribution of the tower in actual foundation settlement, it can determine the weak components of the settlement tower, and install the strain monitoring system. Combined with the finite element simulation results in various conditions, the reliability of simulation results is verified, and the range of strain variation of the corresponding measuring point is obtained. Then the failure of the tower can be predicted in real time according to the system monitoring results. Combined with the actual engineering application, it has a certain guiding role in judging the stability of the tower under the foundation settlement condition.
