Fatigue Damage Assessment of Tracked Flexible Photovoltaic Support Structure

ZHAO Yue; WANG Kangjie; YU Huafeng; JIA Yuan; LI Wenqian

doi:10.3724/j.gyjzG25060201

Volume 56 Issue 10

Oct. 2026

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ZHAO Yue, WANG Kangjie, YU Huafeng, JIA Yuan, LI Wenqian. Fatigue Damage Assessment of Tracked Flexible Photovoltaic Support Structure[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(10): 155-164. doi: 10.3724/j.gyjzG25060201

Citation:

ZHAO Yue, WANG Kangjie, YU Huafeng, JIA Yuan, LI Wenqian. Fatigue Damage Assessment of Tracked Flexible Photovoltaic Support Structure[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(10): 155-164. doi: 10.3724/j.gyjzG25060201

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Fatigue Damage Assessment of Tracked Flexible Photovoltaic Support Structure

doi: 10.3724/j.gyjzG25060201

1. PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China;
2. School of Civil Engineering, Tianjin University, Tianjin 300072, China;
3. School of Economics and Management, Tianjin Chengjian University, Tianjin 300384, China

Received Date: 2025-06-02
Available Online: 2026-11-06

Abstract

Abstract

The flexible photovoltaic bracket has been exposed to the natural environment for a long time， and the structure is susceptible to the influence of wind vibration and fatigue damage. In order to solve the problem of safe operation of flexible photovoltaic bracket structures under strong wind pressure， a tracking single-span and double-row flexible photovoltaic bracket structure was proposed， and its wind vibration response and structural fatigue damage were studied. Then， the fluctuating wind speed spectrum was used to construct the dynamic load time history， the deformation and force characteristics of the structure were calculated， the key members of the structure were selected， and the stress time history was obtained. Different working conditions were selected for analysis， and the actual number of load cycles was obtained according to the rain flow counting method. The fatigue life of each key node of the structure was accurately evaluated by combining the Palmgren-Miner criterion and the S-N curve method. The results show that the fatigue damage generated by the fluctuating wind under the long-term action of the fluctuating wind meets the requirements of the specification， and the damage value of each characteristic position is greater than that of the horizontal wind under the action of the wind load perpendicular to the photovoltaic panel， and the damage value of the cable-stayed rod is the largest， and the larger the flip angle， the greater the damage value of the structure.
- tracking structure,
- photovoltaic power generation,
- flexible brackets,
- wind vibration response,
- fatigue injury,
- life expectancy

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References(32)

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