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changes.mady.by.user oğuzcan hadim

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Tip

  • Shear force, V e , which will be taken as basis for the transverse reinforcement calculation in beams , is calculated automatically with Equation (7.9) in a way to give unfavorable results separately for earthquakes from left to right or from right to left .

Tip

  • If the sum of D and increased shear force calculated from the earthquake together with the vertical loads is less than V e calculated by Equation (7.9) , the condition of using this shear force instead of V e is automatically applied.

Tip

  • It is automatically checked whether the calculated design shear force, V e , meets the conditions given in Equation (7.10) .

Tip

  • In the calculation of beam transverse reinforcement, the contribution of concrete to shear strength, V c , is determined automatically according to TS500 .

Tip

  • In the calculation of the transverse reinforcement in the beam confinement regions, if the shear force consisting of only seismic loads is greater than half of the total shear force in earthquake condition, the condition that the contribution of the concrete to the shear strength is taken as V c = 0 .

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ICONS

A c = Element full cross-section concrete area
A sw = Shear reinforcement total cross-sectional area
b w = Body width of beam
D = Extra Strength Coefficient
d = Useful height of beam
f ck = Characteristic cylinder compressive strength of concrete
f cd = Design compressive strength of concrete
f yk = Characteristic yield strength of longitudinal reinforcement
f yd = Design yield strength of longitudinal reinforcement
f ywd = Transverse reinforcement design yield strength
l n = free height between the columns of beams, the free span between the beam column or wall faces
M pi = beam left end i wherein the column face f ck f yk and calculated taking into account the increase in strength of steel positive or negative moment capacity
M pj = positive or negative moment capacity calculated by taking into account f ck , f yk and the strength increase of the steel on the column face at the right end j of the beam
M ri =The moment of positive or negative bearing capacity calculated according to f cd and f yd on the column or wall face at the left end of the beam
M rj = The right end of the beam is negative or positive calculated according to f cd and f yd on the column or wall face at j. bearing strength moment
N d = Axial force calculated under the combined effect of vertical loads and earthquake loads multiplied by the load factors
V c = Contribution of concrete to shear strength
V cr = Shear strength of the section
V d = Shear force calculated under the combined effect of vertical loads and earthquake loads multiplied by the load coefficients
V dy = Simple beam shear force resulting from vertical loads not multiplied by the load coefficients in any section of the beam
V e = Shear force taken as basis in the beam transverse reinforcement calculation
V r = Beam shear strength of cross section
V w = shear reinforcement contribution to shear strength

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The control in TBDY Equation 7.10 is made for all loading combinations that include earthquake load . However, TS500 Equation 8.7 is used as the upper limit of the shear force, which does not contain earthquake load and to prevent brittle failure . 

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