INFLUENCE OF SIZE EFFECT ON THE BEARING CAPACITY OF THE AXIALLY COMPRESSED COMPONENTS OF CORN STRAW INTEGRATED MATERIAL AND ITS CALCULATION METHOD

Abstract

Our paper proposed a new type of environmentally friendly biomass material, corn straw integrated material (CSIM). In this paper, the ultimate bearing capacity of the axially compressed components under parallel, vertical and combined texture-integratedmethods are compared and analyzed through the experimental research. The influence of size effect on thebearing capacity of the axially compressed components of the CSIMis determined, and thecalculation method of the bearing capacity of the axially compressed components under vertical texture-integratedmethod is proposed. Results showed that the slenderness ratio of 35 was the dividing point between the strength and instability failures of the CSIM axially compressed component, and the calculated value of the revised bearing capacity calculation method agreed with the test value. The result is very close to the American National design specification for wood construction (ANSI/AF&PA NDS, 2005).