科研之友
微信
新浪微博
Facebook
分享链接
摘要
The safety of steel towers strongly influences the reliability of power supply in transmission lines. The dynamic characteristics, non-linear behavior, and ultimate capacity of 345 kV steel transmission towers are mainly studied in this article. The approach in this article is based on the ensemble empirical mode decomposition method, the down-sampling process, and the Hilbert-Huang transform. This study intends to identify vibration characteristics and detect damage from the measured ambient vibration data. Two different types of tower used by Taiwan Power Company (TPC), suspension towers (Type B) and strain towers (Type E), are discussed in this study. According to the specifications of the TPC Standard Code, the applied loads on a tower in the transverse, longitudinal, and vertical directions are determined, and the applied forces are increased gradually until the tower fails. Finally, the ultimate capacity for the tower are found by using the stiffness matrix operation approach dealing with non-linear behavior. The results of this study will be a valuable reference for advanced studies and for improving the design of steel transmission towers in Taiwan.
- 出版日期2013
- 单位中央民族大学
