Fatigue Life Analysis of HV Transmission Tower Structure

doi:10.3969/j.issn.1000－7229.2014.01.003

Abstract

Abstract:

The structure of transmission tower is an important lifeline project as the carrier of high load power. Structural fatigue damage has been considered as one of the most vital destructive factors in civil engineering. Based on the Miner’s linear fatigue accumulation rule and S-N curve, the fatigue life analysis method for ZSZH tower in the 500 kV Haining-Qiaosi double circuit transmission line was proposed. In the fatigue analysis problem of transmission towers, this method not only emphasizes on wind loads, but also considers several extraordinary serious load cases during the design reference period, including typhoon, ice load, construction load and so on. The numerical simulation results demonstrate that this method is quite accurate and effective to predict fatigue life of the transmission tower, which lays a foundation for further engineering application in the future.

Key words: transmission tower, fatigue analysis, fatigue damage theory, fatigue life, wind load

ZHANG Zhuoqun, LI Hongnan, LI Dongsheng, REN Liang, SUN Tong. Fatigue Life Analysis of HV Transmission Tower Structure[J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(1): 14-18.

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