Mechanical Performance Investigation of the Effective Longitudinal Torsional Stiffness Ratio in Rectangular Shield Tunnels Under Combined Loadings. - Liu, Jun; Pan, Fanghui; Tan, Qingyan; Zhou, Xiaozhou; Li, Peinan; Yin, Mei; Lin, Xiugui; Li, Zhigang (Buildings (2075-5309), 2026)