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9.2.10 ,

Np =sp - 330) A'sp + σ sp × Asp, (9.17)

A'sp Asp - , ( ) ;

σ 'sp σ sp - γ sp = 1,1 'sp Asp.

9.2.11

Np × ep £ Rb × b × x (h 0 - 0,5 x) + Rsc × A's (h 0 - a'), (9.18)

- Np , ( ), ( ) ( 9.1),

0138S10-03623

, (9.19)

- Np ;

Rb - , ( 6.8) , Rbp;

Rsc - , 330 ;

A's - , .

ξ R, (8.1) es,l = Rs / Es, Rs - As, ε b,ult = 0,003:

) ξ = x / h 0 £ ξ R ( 9.1)

0138S10-03623

(9.20)

) ξ = x / h 0 > ξR ( - . 9.1)

0138S10-03623

(9.21)

0138S10-03623

9.1 - ,

9.2.12 :

) ( 8.2, ), ..

Np £ Rb × b'fh'f - RsAs + RscA's, (9.22)

b'f 9.2.11;

) ( 8.2, ), .. (9.22) ,

Np × ep = Rb × b × (h 0 - 0,5 ) + Rb (b'f - b) × h'f (h 0 - 0,5 h'f) + RscA's (h0 - a'),(9.23)

0138S10-03623

; eop - . 9.2.11;

zs - ( ) .

:

) ξ = x / h 0 £ ξ RR - . 9.2.11)

0138S10-03623

(9.24)

) ξ = x / h 0 > ξ R

0138S10-03623

(9.25)





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