TY - JOUR
T1 - Parametric study on high strength ECC-CES composite columns under axial compression
AU - Khan, M. K. I.
AU - Lee, C. K.
AU - Zhang, Y. X.
PY - 2021
Y1 - 2021
N2 - This paper presents the results of a comprehensive numerical parametric study on axial compressive behaviours of recently introduced Engineered Cementitious Composites (ECC) confined concrete encased steel composite columns (ECC-CES). For that purpose, a criterion to calculate the effective material stresses for non-linear finite element (FE) modelling of ECC-CES columns is first established. The results of criteria-based FE analysis are validated against the experimental results in terms of failure mode, column strength and load-deformation response, and a good agreement is demonstrated. The validated FE model is then employed to conduct a detailed parametric study. The effects of extended range of material strengths, geometric dimensions and column scaling on the axial compressive performance of ECC-CES columns are investigated. Based on the finite element analysis (FEA) results, some important implication for practical design of ECC-CES columns are recommended. In addition, the applicability of a simple squash load formula to predict the ultimate capacity of ECC-CES columns is also evaluated and discussed against the results of comprehensive parametric study.
AB - This paper presents the results of a comprehensive numerical parametric study on axial compressive behaviours of recently introduced Engineered Cementitious Composites (ECC) confined concrete encased steel composite columns (ECC-CES). For that purpose, a criterion to calculate the effective material stresses for non-linear finite element (FE) modelling of ECC-CES columns is first established. The results of criteria-based FE analysis are validated against the experimental results in terms of failure mode, column strength and load-deformation response, and a good agreement is demonstrated. The validated FE model is then employed to conduct a detailed parametric study. The effects of extended range of material strengths, geometric dimensions and column scaling on the axial compressive performance of ECC-CES columns are investigated. Based on the finite element analysis (FEA) results, some important implication for practical design of ECC-CES columns are recommended. In addition, the applicability of a simple squash load formula to predict the ultimate capacity of ECC-CES columns is also evaluated and discussed against the results of comprehensive parametric study.
UR - https://hdl.handle.net/1959.7/uws:61789
U2 - 10.1016/j.jobe.2021.102883
DO - 10.1016/j.jobe.2021.102883
M3 - Article
SN - 2352-7102
VL - 44
JO - Journal of Building Engineering
JF - Journal of Building Engineering
M1 - 102883
ER -