Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Tip
  • Automatic calculation is made as D alt = 1.5 and (R alt / I) = 2.5 in accordance with 4.8.5.2 in buildings with basement in accordance with Article 4.3.6.2 (b) .

...

Symbols

D

 Strength Excess Coefficient

D alt

 Strength Excess Coefficient applied to the lower part of the building

D üsy

 Strength Excess Coefficient applied to the lower part of the building

R

 Carrier System Behavior Coefficient

R alt

 Structural System Behavior Coefficient applied to the lower part of the building

(R a ) alt

 Earthquake Load Reduction Coefficient applied to the lower part of the building

(R a ) n, alt

Earthquake Load Reduction Coefficient  applied to the lower part of the building in nth vibration mode

R üst

 Structural System Behavior Coefficient applied to the lower part of the building

( R a ) üst

 Earthquake Load Reduction Coefficient applied to the upper part of the building

(R a ) n, üst

Earthquake Load Reduction Coefficient  applied to the upper part of the building in the nth vibration mode

T

 Natural vibration period

Tn

 Natural vibration period of the nth mode

Tp(X)

 (X) the dominant natural vibration period of the building in the direction of the earthquake

νn(X)

 The coefficient used in the calculation of the equivalent earthquake load reduction coefficient applied in the nth mode for the lower part of the building

ν alt (X)

 Coefficient used to calculate the reduced internal forces caused by the vibration of the lower part of the building itself

ν n, alt(X)

 Coefficient used to calculate the reduced internal forces from the vibration of the lower part of the building itself in the nth mode

νüst(X)

 Coefficient used to calculate the internal forces transferred from the upper to the lower part of the building

ν n, üst(X)

 Coefficient used to calculate the internal forces transferred from the upper to the lower part of the building in the nth mode

...

In buildings with basements where different R and D coefficients are used in the upper and lower sections, the earthquake calculation is made by considering the Modal Calculation Methods as mentioned in 4.3.6.2 . For each nth vibration mode and taking the relevant natural vibration period T n into consideration , the procedures in Equation (4.4) , Equation (4.5) and Equation (4.6) are applied.

...

The "Calculation method with single loading status" option is selected from the "Analysis Settings" command as shown in the picture below.

...

Modal Response Spectrum Analysis of Structures with Basement Buildings with Modal Analysis Located under the heading.

...