Slenderness Ratio Effect on Eccentric Compression Properties of Parallel Bamboo Strand Lumber Columns

The slenderness ratio is one of the main influencing factors for columns. It is interesting to study how this factor influences the mechanical properties of parallel bamboo strand lumber (PBSL) columns. Based on this background, 27 column tests have been carried out and analyzed. Bending failure always occurred for the test specimens regardless of their length, even though two failure models can be classified by crack layers based on the test results for the PBSL columns. The strain values are more scattered for the short specimens. The ultimate strain values for two directions for compression surfaces are always the biggest ones among the four surfaces. Three stages can be identified for the failure process irrespective of column length. The paper proposes equations representing the relationship between the slenderness ratio and mechanical property parameters based on the test results.