Page Comparison

Accessories section (calculated - required - existing)

Image Removed

Image Added

At the left support of the beam, upper and lower; in the middle; clearance and mounting; in the right bracket; The sum of the available / required and surplus calculated-required-existing-difference reinforcement areas is given as top and bottom. Just below, the loading combination of the reinforcement calculation and the moment values ​​of that combination are also written.

Left moment0: At ​​the beam left support, the moment zero point is the distance from the left end of the beam. The value can be changed if desired. In the beam details, the break distance of the battery is taken as the value written here.

Right moment0: At ​​the beam right support, the moment zero point is the distance from the right end of the beam. The value can be changed if desired. In the beam details, the break distance of the battery is taken as the value written here.

Structural material

Shows the structural material of the beam.

fck

The characteristic of concrete is its compressive strength.

fcd

The characteristic calculation of concrete is its compressive strength.

fctd

The characteristic calculation of concrete is its tensile strength.

fyk

Reinforcement is the yield strength of rebar.

fyd

It is the calculation strength of rebar steel.

T-Beam width

Beam is the plate value. It is the beam width value in rectangular sections. (b)

In symmetrical sections;
b = bw + 1/5 lp

For unsymmetrical sections,
b = b1 + 1/10 lp
lp = a ln

For a, the following values ​​can be used:
Single span simply supported beams a = 1
Continuous beams (side span) a = 0.8
Continuous beams (center span) a = 0.6 For
cantilever beams a = 1.5

Upper limits
b <= bw + 12 hf (symmetrical section)
b <= £ b1 + 6 hf (asymmetric section)

or
b <= bw + ½ an (symmetrical section)
b <= b1 + ½ an (asymmetric section)

Beam length

Shows the beam length.

Design combination

And the loading that gives its value is the name of the combination.

End

Support for cutting calculation ... (left or right)

ln

It is the net span value of the beam from inside the column to the inside of the column, from the beam edge to the beam edge if the beam is supported to another beam.

Design shear force

It is the design shear force used in stirrup calculation.  

In beams of high ductility level;
Ve = Vdy ± (Mpi + Mpj) / ln
Vd: It is the shear force calculated under the combined effect of the vertical loads and earthquake multiplied by the load coefficients.
Mpi, Mpj: The left and right end are moments of carrying power. In beams of normal ductility level;
Vd value is taken directly as Ve.

Vcr

It is the shear force that creates the oblique crack.
Vcr: 0.65 fctd bw d

Vc

It is the shear force carried by concrete.
And if - Vdy> = 0.5 Vd then Vc = 0 is taken.
Otherwise, Vc = 0.8 Vcr is calculated.
Vd: It is the calculated shear force under the combined effect of vertical loads and earthquake loads multiplied by load factors.

Vr

It is the maximum cutting force value that the section can carry. The design shear force Ve used in stirrup calculation is not allowed to exceed Vr.

The method followed in the calculation of Vr:
Vw: It is the contribution of shear reinforcement to the shear strength.
Vw = (Asw / s) * fywd * d
Vr = Vc + Vw The
contribution of the battery to the shear force is never included in the shear calculation.

Vmax

It is the maximum shear force that the section can carry.
Vmax = 0.22 fcd bw d
Ve <= Vmax or Ve <= Vr otherwise the section is insufficient. The program will then warn of insufficient section for the beam in question.

TS500 vd

Design shear force determined according to TS500.

TS500 vMax

Maximum shear force that the section can carry, determined according to TS500.

asw/s

asw / s

It is the area of ​​1 meter of single arm stirrup found for densification zone as a result of shear force calculation. And it is calculated.

And = Vdy ± (Mpi + Mpj) / ln

If And> Vmax or Ve> Vr, the cross section is insufficient.

And Asw / s is calculated from the formula of = (Asw / s) * fywd * d + 0.8 Vc. S is accepted as 1 meter.

 And if - Vdy> = 0.5 Vd then Vc = 0 is taken.

The asw / s value is never allowed to be less than 0.3 (fctd / fywd) * bw.

Reinforcement

It is the stirrup rebar selected from the Asw / s value. It is shown as the number of stirrups, the diameter of the rebar, the middle and the spacing in the densification region, respectively.

Diagonal reinforcement

Lists the control information in table form of the diagonal rebar design related information in the tie beams. (TBDY Article 7.6.8)

Ln> 2hk and V <= 1.5 bw d fcd checks are made.

Asd = Vd / (2fydsin (y))

ln: Beam clear span
hk: Beam height
Vd: Shear force calculated under the combined effect of vertical loads and earthquake loads multiplied by load factors

d = hk-spacers

fctd: Concrete characteristic calculation tensile strength
Sin (y): Angle of cross reinforcement bundle with horizontal
Asd: Total area of ​​reinforcement in each cross reinforcement bundle
Cross: Number and diameter of  cross reinforcement bundle
Stirrup: Stirrup value of cross reinforcement bundle in terms of diameter and spacing

Schematic drawing

Moment - curvature diagram

Caltrans idealized model

If marked, the Moment-Curvature plot is idealized. It is a moment curvature relationship obtained by drawing a horizontal line that intersects with an inclined line passing over the moment of yield and will equalize the areas between the moment curvature graph.

Stop when a fiber reaches ultimate stress

If checked, the graphic ends when the graphic fiber reaches its highest stress.

Use T-section

If the option is selected, t-section is used.

Extra as in flange

It is the extra reinforcement area to be taken into account in the t-section due to the slab reinforcement. The reinforcement area value written here is added to the existing beam reinforcement area.

DGT

Section cells and rebars are displayed according to the concrete and rebar material model criteria defined in TS500.

SDGT

The section cells and rebars are displayed according to the ŞGDT criteria for the concrete and rebar material model defined in TBDY.

Point count

It is used to determine how many points the moment curvature graph consists of.

Angle

It shows the neutral axis angle from which the moment curvature relationship is obtained. It is indicated with a red arrow in the image above.

Axial force

It shows under which axial force the moment curvature relationship is drawn.

End I

Shows the arrangement of fibers and reabers at the i-end of the beam.

End J

Shows the fiber and rebar arrangement at the j end of the beam.

Compression limit

The determined material model is the largest axial pressure force that the section can take in the moment-normal force interaction.

Tension limit

The determined material model is the largest axial tensile force that the section can take in the moment-normal force interaction.

View stress/strain contours

It shows the stress and strain state in section in color format at each step of the moment curvature relationship.

Generate report

Creates a detailed report of moment-curvature.