Diogonad lersion/frincipal lension C
T C B C
A
D A
Cbngiolera cubical element ABCD ubjected te
all
arcund
Sheor. stress omagnitude T.
As a resuH this, this elemert get
deformee
ensite sttesss developed llel to the
Jhe tensi le stresses diagonal 4C.
8r develobad ts Knoeon a
DIACONAL /PRINCIPAL TENSIoN
+is ual te determine the printipal tenoion duo t
Combined action shear and flexurte.
Beam ith curved Tendo
P
Vertical omponent oP Psinct -
Pa l1) (sina =et]
radions
Shear force due te abblied tood-lv) ()
he net shear fore., V' V- Pa 1P If v'=0
=
0 0V- Pd e-e
+ For straight tendon, d = o V Pd (at midspon)
PVa
Net shear stress, T -
V-Pa T- Tavg
bD
* Jn absence o Ptestreesing force, net shear fbrce = V=v
P=o)
, For rectanqular secthon.
Tmax 2Tavg
Cavg.
IT) Maximum and inimum Prircipa Stress
max Tmax
min 2
where, fx* =
horizotal pre-Shegs =+ey+MY
+y Vertical pre-skess
fy- 0 generally)
Case I f fy=0, then
Max + Principol Compresive Stres
4 min. 4T Primipal/Diogonal lensio
steess
fT, exceeds permissile value
then t is necessary fo frovide shear R/F.
i) f f,< Permiesible value,
then nominal Shear R/F is provideed
CoseI 14f horizantal pre-sBreas, +=0,then,
max Diagonal Nension stress]
T C B C
A
D A
Cbngiolera cubical element ABCD ubjected te
all
arcund
Sheor. stress omagnitude T.
As a resuH this, this elemert get
deformee
ensite sttesss developed llel to the
Jhe tensi le stresses diagonal 4C.
8r develobad ts Knoeon a
DIACONAL /PRINCIPAL TENSIoN
+is ual te determine the printipal tenoion duo t
Combined action shear and flexurte.
Beam ith curved Tendo
P
Vertical omponent oP Psinct -
Pa l1) (sina =et]
radions
Shear force due te abblied tood-lv) ()
he net shear fore., V' V- Pa 1P If v'=0
=
0 0V- Pd e-e
+ For straight tendon, d = o V Pd (at midspon)
PVa
Net shear stress, T -
V-Pa T- Tavg
bD
* Jn absence o Ptestreesing force, net shear fbrce = V=v
P=o)
, For rectanqular secthon.
Tmax 2Tavg
Cavg.
IT) Maximum and inimum Prircipa Stress
max Tmax
min 2
where, fx* =
horizotal pre-Shegs =+ey+MY
+y Vertical pre-skess
fy- 0 generally)
Case I f fy=0, then
Max + Principol Compresive Stres
4 min. 4T Primipal/Diogonal lensio
steess
fT, exceeds permissile value
then t is necessary fo frovide shear R/F.
i) f f,< Permiesible value,
then nominal Shear R/F is provideed
CoseI 14f horizantal pre-sBreas, +=0,then,
max Diagonal Nension stress]
