Table 5 Comparison between experimental and calculated values for circular RCFST columns.

From: Axial compression behavior of rubberized concrete filled steel tube columns after exposure to elevated temperatures

Specimens

\(\begin{gathered} N_{u} \hfill \\ \left( {kN} \right) \hfill \\ \end{gathered}\)

\(\begin{gathered} N_{GB} \hfill \\ \left( {kN} \right) \hfill \\ \end{gathered}\)

\(\begin{gathered} N_{EC4} \hfill \\ \left( {kN} \right) \hfill \\ \end{gathered}\)

\(\begin{gathered} N_{ACI} \hfill \\ \left( {kN} \right) \hfill \\ \end{gathered}\)

\(\begin{gathered} N_{AIJ} \hfill \\ \left( {kN} \right) \hfill \\ \end{gathered}\)

\(\frac{{N_{GB} }}{{N_{u} }}\)

\(\frac{{N_{EC4} }}{{N_{u} }}\)

\(\frac{{N_{ACI} }}{{N_{u} }}\)

\(\frac{{N_{AIJ} }}{{N_{u} }}\frac{{N_{AIJ} }}{{N_{u} }}\)

C-R0T600t180

641.99

573.12

395.94

292.35

482.1

0.89

0.62

0.46

0.75

C-R5T600t180

563.58

532.86

370.03

271.29

449.06

0.95

0.66

0.48

0.80

C-R10T600t180

540.68

512.58

356.36

260.17

431.62

0.95

0.66

0.48

0.80

C-R20T600t180

464.47

487.69

338.37

245.55

408.68

1.05

0.73

0.53

0.88

C-R10T20

644.41

866.48

657.59

481.69

800.97

1.34

1.02

0.75

1.24

C-R10T200t180

566.02

799.58

548.12

402.99

668.34

1.41

0.97

0.71

1.18

C-R10T400t180

552.04

717.87

494.10

361.42

601.03

1.30

0.90

0.65

1.09

C-R10T800t180

421.11

415.82

280.29

200.89

338.62

0.99

0.67

0.48

0.80

C-R10T600t30

547.48

875.27

598.03

438.16

724.08

1.60

1.09

0.80

1.32

C-R10T600t90

535.62

615.68

425.61

312.75

517.47

1.15

0.79

0.58

0.97

Average

-

0.23

0.16

0.12

0.20

Standard deviation

-

0.20

0.20

0.20

0.20

Variable coefficient

-

0.20

0.20

0.20

0.20