Stability and strength of slender concrete deep beams - Reinforced Concrete Deep Beams - page 261

(10.17)

and hence the steel stress f si is

(10.18)

where f yi and E si are the yield stress and YoungÓs modulus, respectively, of
the ith layer of steel. Therefore, e si and hence f si are completely defined by

the values assigned to e c and x/h in other words, they are completely defined

by the values assigned to e cu and x/h. Substituting Eqn 10.18 into Eqns

10.13 and 10.14 and rearranging,

e c /

(10.19)

(10.20)

is defined by Eqns 10.12 (or 10.15) and k 2 is defined by Eqn 10.10;
the values of K 1 , K 2 , K 3 , K 4 , MM and NN are defined in Eqn 10.21

where a

(10.21a)

(10.21b)

(10.21c)

(10.21d)

(10.21e)

(10.21f)

where the values of r i , m i and n i are as shown in Table 10.1 .