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        Calculating Method Study and Parameter Analysis of Slender LCFST Columns Under Axial Loading

        Ting Zhou,Ziyang Ren,Baoqi Jiang,Minyang Xu,Zhiyong Lei,Zhi-Hua Chen 한국강구조학회 2019 International Journal of Steel Structures Vol.19 No.5

        L-shaped columns composed of concrete-fi lled steel tubes (LCFST columns) connected by steel plates, which are important component to make sure the mono-column working together, were investigated under axial loading experiment with diff erent width and thickness of connection plates. The relationships between load and longitudinal displacement, lateral displacement, longitudinal strains and transverse strains as well as failure mode are presented. Load carrying capacity of LCFST columns increased with the width and thickness of the connection plates increasing. In addition, the integrity of the specimen was improved with increase of thickness and decrease of width of the connection plates. Failure modes obtained from the fi nite element model were consistent with the phenomenon observed in the test. Besides, the parameters of slenderness ratio, dimensions of connection plate, and transverse stiff ener spacing were analyzed. Finally, the calculating method of yield bearing capacity of axial compression was proposed based on the former analysis.

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