Open Access
表2
ABAQUS软件中混凝土的骨架曲线参数取值
| 参数 | y | x | A | B | α |
|---|---|---|---|---|---|
| 注: 大部分参数可由立方体抗压强度fcu直接算出; 钢管约束混凝土柱为三轴受压, 普通混凝土柱为单轴受压。 | |||||
| 受压取值 | y=σ/fc, σ为应力, fc为轴心抗压强度, fc=0.4fcu7/6 | x=ε/εc, ε为应变, εc为受压峰值应变, εc=383fcu7/18×10-6 | 9.1fcu-4/9 | 1.6(A-1)2 | 钢管约束混凝土柱取0.15, 普通混凝土柱取2.5fcu3×10-5 |
| 受拉取值 | y=σ/ft, ft为轴心抗拉强度, ft=0.24fcu2/3 | x=ε/εt, εt为受拉峰值应变, εt=33fcu1/3×106 | 1.306 | 0.15 | 0.8 |
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