Research on Non-Braced Photovoltaic Support with Hat-Shaped Inclined Beams and Double Columns. - Wang, Kai; Zeng, Shaopeng; Han, Xiao; Xu, Dong; Yang, Zhipeng; Tong, Xin; Elsemeen, Ahmed Samir; Li, Tao; Wang, Xiaoping (Applied Sciences (2076-3417), 2026)