| Bamboo resources is very rich in China, but the utilization of this resources is low. It isbroad prospects for development that if we can combine steel with bamboo, and apply to thebuilding structure. On the basis of existing research, this paper design a new steel/bamboocomposite column, that is Thin-Walled Steel Tube-Laminated Bamboo Composite HollowColumns(SBCC), and research its axial compression behavior. This paper firstly introducesthe mechanical properties of materials form the SBCC. Considering the influence of severalfactors such as sectional dimension, hollow ratio and slenderness ratio, on the mechanicalperformance,15composite column specimens were designed and manufactured, and the axiscompression test of SBCC was designed. Secondly the axis compression test of SBCC isdiscussed. Based on the axial compression test. the failure modes and deformation behavior ofSBCC were investigated during the process of the test. The influence of various factors on theaxial compression properties of the specimens was analyzed. The practical calculatingformula for the axial compression bearing-capacity of SBCC was derived. The test resultsshow that the compression failure of SBCCs were principally the plywood material damage,the split damage of interface and the global buckling failure. The overall adhesive strengthbetween the matrixes primarily determined the failure mode. The compressionbearing-capacity of SBCC increases with the increasing in the sectional dimension and hollowratio, and decreases with the increasing in the slenderness ratio. The practical calculatingformula for the axial compression bearing-capacity of SBCC was derived through thenonlinear regression analysis of experimental data, and the maximum error between theestimated results of the calculating formula and the experimental results was about20%.Finally, the test was simulated by finite element software ABAQUS. The research show thatthe finite element result is in good agreement with the test result. |
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