带约束拉杆薄壁型钢管/胶合竹板组合空芯柱偏心抗压性能

kind of assembling hollow column parallel to the fiber texture was composed of square thin-walled cold-formed steel-tube and bamboo-plywood by the fastening of the transverse binding bars and structural adhesive (SBCCB), and the failure modes, bearing capacity and influence factors of SBCCB subjected to eccentric compression loading were investigated. The results indicate that the compressive failures of specimens are primarily the debonding failure at the column end, the debonding failure of the matrix interfaces in the middle of column between binding bars and the compressive damage of bamboo plywood material. The ultimate bearing capacity of SBCCB generally increases as the net cross-sectional area of gluing bamboo and hollow ratio increases, decreases as the slenderness ratio and the loading eccentricity increase. The binding bars can effectively slow the glue failure of SBCCB, change the ultimate buckling mode and advantageously improve the compressive bearing capacity of specimens. Local buckling decreases as the binding bars spacing decreases.