Experimental Validation and Failure Mechanism Analysis on Hgbs Column Axial Compression Performance with Different Structural Measures

Abstract

The hollow glued bamboo scrimber(HGBS) column represents a sustainable structural component designed to enhance axial load-carrying capacity while maintaining material efficiency. The interlaminar connection configuration of its bamboo-based composite laminates is critical to ensuring structural reliability. To systematically evaluate the effects of three key structural interventions on HGBS column performance, including adhesive type (reactive polyurethane hot melt glue (PUR) and polyurethane glue(101)), nail reinforcement, and rib addition, a total of 20 specimens across 10 experimental groups were fabricated and tested under axial compression. The study characterized failure mechanisms, elastic modulus, yield load, ultimate capacity, ductility index, and strain distribution patterns. Comparative analysis revealed significant influences of adhesive chemistry, and connection detailing on both strength and ductility. A multifactor correction model was developed through parametric analysis of experimental data. This work establishes a comprehensive engineering framework for optimizing HGBS column performance through rational structural design.

Keywords: Hollow glued bamboo scrimber (HGBS), Axial compression performance, Structural measure, Failure mechanism analysis, Multi-factor correction model