MATEC Web of Conferences (Jan 2019)

Experimental study on LBL beams

  • 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

DOI
https://doi.org/10.1051/matecconf/201927501026
Journal volume & issue
Vol. 275
p. 01026

Abstract

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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.