Cft Capacity
按简化叠加模型估算圆钢管混凝土短柱轴心受压承载力。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Axial capacity | This tool: N = A_s·f_y + 1.2·A_c·f_c (simplified superposition; 1.2 is empirical, not a code value) | Formal design: GB 50936-2014 N = A_sc·f_sc; not implemented here |
| Confinement effect | Steel tube confines core concrete | Cai Shaohui's CFST theory |
适用于高层与桥梁重载柱的轴压承载力快速估算:输入钢管直径、壁厚、钢材与混凝土等级,得组合轴压承载力并对比 RC 柱,辅助截面比选;正式设计仍须按规范公式与构造要求复核。