Dynamic performance of angle-steel concrete columns
under low cyclic loading-II: parametric study
Zheng Wenzhong and Ji Jing
School of Civil Engineering, Harbin Institute of Technology, No.204 Haihe Road, Harbin 150090, China
Abstract: Tests of nine angle-steel concrete column (ASCC) specimens under low cyclic loading are described in a companion paper (Zheng and Ji, 2008). In this paper, the skeleton curves from the numerical simulation are presented, and show good agreement with the test results. Furthermore, parametric studies are conducted to explore the influence of factors such as the axial compression ratio, shear steel plate ratio, steel ratio, prismatic concrete compression strength, yield strength of angle steel and shear span ratio, etc., on the monotonic load-displacement curves of the ASCCs. Based on a statistical analysis of the calculated results, hysteretic models for load-displacement and moment-curvature are proposed, which agree well with the test results. Finally, some suggestions concerning the conformation of ASCCs are proposed, which could be useful in engineering practice.
Keywords: low cyclic loading; angle-steel concrete column; shear-span ratio; steel plate stirrup; hysteretic model