Experimental investigation and mechanical model for Hollow Glued Bamboo Scrimber (HGBS) columns with axial compression

作者：Xian Yu, Gang Yao, Yang Yang, Guo Lin, Jianming Zhou, Ming Zhang · 发表于：Wood Material Science and Engineering · 年份：2025 · DOI：10.1080/17480272.2025.2557525 · 被引用次数：3 · 研究领域：Bamboo properties and applications、Natural Fiber Reinforced Composites、Tree Root and Stability Studies

Hollow glued bamboo scrimber (HGBS) columns enhance stability and load-bearing capacity for structural members without increasing material consumption. Considering the influence of the slenderness ratio on column mechanical performance, this reserach studied an experimental investigation of HGBS axial bearing capacity and failure modes with varying slenderness ratios. Axial compression tests were conducted on seven groups of HGBS columns with varying slenderness ratios. Failure modes, axial stiffness, and ultimate load-bearing capacities were systematically recorded. The results unequivocally demonstrate that the slenderness ratio has a profound impact on the failure mechanism, ultimate capacity, and deformation characteristics of HGBS columns. A finite element model (FEM) accurately simulating test conditions was developed and validated against experimental outcomes. Parametric finite element analysis results were further compared with predictions from Euler theory, the tangent modulus theory, and the calculation formulas specified in the current Chinese industry standards. Finally, based on the observed axial compression damage behaviour, a novel bearing capacity calculation formula was derived for HGBS columns, explicitly incorporating the influence of the slenderness ratio. This study establishes a reliable model for predicting HGBS column capacity and provides significant insights for the practical design of such structures.