首页|Study on eccentric-compressive behavior of self-locking cooperative modular column
Study on eccentric-compressive behavior of self-locking cooperative modular column
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NETL
NSTL
Elsevier
In order to solve the issue of ineffective synergetic force transfer between modular columns in existing modular steel building systems, this paper investigates the mechanical properties of an innovative self-locking cooperative modular columns (SLCMC) through eccentric compression experiment. This study analyzes critical mechanical characteristics, including failure modes, ultimate bearing capacity, and strain distribution. The results indicate that under eccentric loading, the self-locking dovetail inter-column connection (SLDICC) significantly improve the bearing capacity, ductility, and stiffness of the modular columns. Additionally, a finite element model of the self-locking cooperative modular column was developed and validated using experimental results. Using this finite element model, further analysis was conducted to explore factors influencing the mechanical performance of the self-locking cooperative modular columns, such as slenderness ratio and the positioning and quantity of SLDICC. The findings show that when the SLDICC are evenly distributed, their effect is maximized, leading to better performance of the modular columns. For a column group made up of four box-section modular columns, the most significant increase in bearing capacity occurs when SLDICC are introduced. However, once synergetic force transmission is achieved, further increasing the number of SLDICC has a diminishing impact on the bearing capacity. As the slenderness ratio of the columns increases, the role of the SLDICC becomes more pronounced, further enhancing the degree of cooperative load-bearing between the columns.
NETL
NSTL
Elsevier
