Experimental study on LBL beams

• Main Authors: Zhao Chenjie, Xiong Xiaohong, Xiong Zhenhua, Wu Kangwen, Cao Zhen, Shao Miao, Cao Tongwei, Dong Haoran, Ding Jieying, Zhao Chenge, Xie Yuxuan, Jia Xue, Liu Baofeng, Liu Can, Jiang Langkun, Liu Wenfeng, Wei Dongdong, Yuan Conggan, Li Xinjie
• Format: Article
• Language: English
• Published: EDP Sciences 2019-01-01
• Series: MATEC Web of Conferences
• Online Access: https://www.matec-conferences.org/articles/matecconf/pdf/2019/24/matecconf_acem2019_01026.pdf

Six specimens were made and tested to study the mechanical properties of LBL beams. The mean ultimate loading value is 68.39 MPa with a standard deviation of 6.37 MPa, giving a characteristic strength (expected to be exceeded by 95% of specimens) of 57.91 MPa, and the mean ultimate deflection is 53.3 mm with a standard deviation of 5.5 mm, giving the characteristic elastic modulus of 44.3 mm. The mean ultimate bending moment is 20.18 kN.m with a standard deviation of 1.88 kN.m, giving the characteristic elastic modulus of 17.08 kN.m. The mean elastic modulus is 9688 MPa with a standard deviation of 1765 MPa, giving the characteristic elastic modulus of 6785 MPa, and the mean modulus of rupture is 93.3 MPa with a standard deviation of 8.6 MPa, giving the characteristic elastic modulus of 79.2 MPa. The strain across the cross-section for all LBL beams is basically linear throughout the loading process, following standard beam theory.