Axial compression properties of bamboo/wood composite column constrained with sliced bamboo veneer

The purpose of this study was to investigate the enhancement effect of composite column on axial compression. Four full-scale composite columns and one Chinese fir (Cunninghamia lanceolata) column were fabricated and tested under axial compression load to study the enhancement effect of composite column. The compressive, bending properties of bamboo (Phyllostachys edulis) rod and Chinese fir were tested respectively. The ultimate axial load capacity, midpoint lateral displacement, failure mode of composite column and Chinese fir column were also investigated. The test results indicated that the harmonious coordination between bamboo rods and Chinese fir was shown under the axial load process, and the axial compressive strength 26.21 MPa and compressive modulus of elasticity 9.46 GPa of the composite column were increased significantly meanwhile the lateral displacement at the midpoint of composite columns was reduced by 9.61 mm compared with that of Chinese fir column, and the failure patterns of two types of columns were different. The results will provide a theoretical basis for the popularization and application of bamboo and Chinese fir composite columns.