“…In the last decades, the stress distribution, bearing capacity et al mechanical properties of laminated beams has been extensive researched (Gao and Wu, 2007;Sun, 2004;Li, 2002;Liu et al, 2021;Sedighi et al, 2013;Huang, 2015;Li and Liu, 2021). Based on the free-laminated beams, the calculation method of bending moment when each layer beam is compacted was proposed by Jie (Jie, 1995).…”