地上設置型太陽光発電システム架台におけるシェル要素解析モデルの評価

抄録

In recent years, the use of renewable energy has been dramatically increased all over the world. Especially the photovoltaics power generation system is attracting wide attention, and the scale of market is expanding. In Japan, the introduction of photovoltaic system is beginning to advance, and the number of large-scale solar power plants has been rapidly increasing because the Feed-in Tariff Law (FIT) for renewable electric energy takes effect from July 1, 2012. However, accidents have frequently occurred under the rapid spread of photovoltaic power generation system. The support structures of the system were deformed or destroyed due to strong wind or heavy snow when the support structure was designed improperly. In the Previous studies, the authors have proposed an analytical model using beam elements and reported its validity for safe design. In this study, we make another analytical model with shell elements and conducted finite element method analysis with this analytical model. In the shell element analysis model, it is possible to reproduce the influence of the rigidity reduction after the cross-sectional shape changes and the deformation due to the contact between the two adjacent elements. The analytical result and experiment result are examined for the validity of this model.