Table. 3: Comparisons between calculations and experiment for the composite CFST columns (Section b).

No. B×t1+D×t2

mm
fy1+fy2

MPa
fc1+fc2

MPa


kN


kN




kN




kN


References
1     180×3.62+89×2.60     348+314     105.7+87.5     3643     ―     ―     3962     1.09     3742     1.03      [14]
2     180×3.62+89×3.32     348+324     105.7+87.5     3583     3876     1.08     3736     1.04     3820     1.07
3     180×5.40+89×2.60     338+314     105.7+87.5     3865     4142     1.07     3966     1.03     4053     1.05
4     180×5.40+89×3.32     338+324     105.7+87.5     3947     4212     1.07     3979     1.01     4161     1.05
5     180×3.62+89×2.60     348+314     87.5+105.7     3355     3481     1.04     3255     0.97     3447     1.03
6     180×5.40+89×2.60     338+314     87.5+105.7     3814     3818     1.00     3565     0.93     3759     0.99
7     180×5.40+89×3.32     338+324     87.5+105.7     3855     3746     0.97     3655     0.95     3867     1.00
8     180×3.62+89×2.60     348+314     87.5+87.5     3198     ―     ―     3435     1.07     3357     1.05
9     180×5.40+89×2.60     338+314     87.5+87.5     4021     ―     ―     3449     0.86     3669     0.91
10     180×5.40+89×3.32     338+324     87.5+87.5     3900     3806     0.98     3543     0.91     3778     0.97
11     120×2.60+58.5×1.4     407.5+352.5     35.2+35.2     980     1031     1.05     932     0.95     965     0.98      [5]
12     120×2.60+74×0.9     407.5+680     35.2+35.2     1040     1112     1.07     1032     0.99     989     0.95
13     120×2.60+83×1.4     407.5+597     35.2+35.2     1080     1113     1.03     1027     0.95     1001     0.93
Notes:
  1. fcu represents the compressive strength of the cubic concrete specimen. Considering the different conversion relationship between fcu and fc in reference [14]and [5],the calculations of fc should refer to the corresponding reference.
  2. When formula (7) is used to the calculate the specimens that filled with different strength of concrete, the calculation formula of fccan be expressed as: fc=(Ac1fc1+Ac2fc2) / (Ac1+Ac2).
  3. , , respectively represents the value of the ultimate bearing capacity obtained by experiment, the value of the ultimate bearing capacity calculated by formulas, the ration of and . The rest parameters are the same as the preceding part of the text.

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