Axial Load & Moment Interaction Diagram for RCFT & SCFT

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RECTANGULAR (d/b = 0.5, E25 Chart No:1 Compressi c ck s b p p A Ratio Steel = λ concrete of Width concrete of Depth sec se R CONCRETE FILLED STEEL TUBE 50 GRADE STEEL (f y = 250MPa) & M25 GRADE CONC ion with Minor Axis Bending for Depth to Wi c y d p 5 . 1 & 1 . 1 ck ck y y f p f p = = t b b tion t d d tion c c 2 c 2 ec - = - = 1 E SECTION CRETE) idth Ratio of 0.5

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Axial Load & Moment Interaction Diagram for Rectangular & Square Concrete Filled Steel Tube section

Transcript of Axial Load & Moment Interaction Diagram for RCFT & SCFT

RECTANGULAR CONCRETE FILLED STEEL TUBE SECTION(d/b = 0.5, E250 GRADE STEEL (fy = 250MPa) & M25 GRADE CONCRETE)

Steel Ratio =

As p y pck bc d c

py =

fy 1 .1

& pck =

f ck 1 .5

Depth of concrete sec tion d c = d 2t Width of concrete sec tion bc = b 2t

Chart No:1 Compression with M Minor or Axis Bending for Depth to Width Ratio of 0.5 1

SQUARE CONCRETE FILLED STEEL TUBE SECTION(d/b = 1.0, E250 GRADE STEEL (fy = 250MPa) & M25 GRADE CONCRETE)

Steel Ratio =

As p y pck bc d c

py =

fy 1 .1

& pck =

f ck 1 .5

Depth of concrete sec tion d c = d 2t Width of concrete sec tion bc = b 2t

Chart No: 2 Compression with Uniaxial Bending for Depth to Width Ratio of 1

2

RECTANGULAR CONCRETE FILLED STEEL TUBE SECTION(d/b = 2, E250 GRADE STEEL (fy = 250MPa) & M25 GRADE CONCRETE)

Steel Ratio =

As p y pck bc d c

py =

fy 1 .1

& pck =

f ck 1 .5

Depth of concrete sec tion d c = d 2t Width of concrete sec tion bc = b 2t

Chart No: 3 Compression with Major Axis Bending for Depth to Width Ratio of 2 3