.1 , , :
)
(.1) |
Astb,shr, Istb,shr - Eef,shr, 9.9;
Ast - , ;
Sshr = AstZst,stb,
Zst,stb - Astb,shr Ast;
Z - Astb,shr , σshr ( Z );
vsbr = 0, vshr = 1 - ;
- :
ef,shr;
- Esl;
- Ers;
- ;
εshr - , 9.9;
)
(.2) |
α = 110-5 -1 - ;
t max = γ ftn,max
γ f - 6.14;
tn,max - 9.10;
- Eb, Est Ers, Erp , , ;
Astb , t, Istb,t - ;
Z - stb,r , σ.
(.2) :
At = 0,8 Awt + 0,3 As 1, t ; | (.3) |
S 1 = (0,4 hw 0,8 Zb 1, stb ) Awt + 0,3 As 1, t Zs 1, stb ; | (.4) |
v = vti,
Awt - (, , );
As 1, t - .
(.2)
:
(.5) | |
(.6) |
v = v'ti,
bsl, tsl, , 9.15.
vti v'ti i - , , 9.10.
, (.3) - (.6), 9.5 9.1.
.2 .1.
()
.1 SeN (. .1).
.1 -
:
|
|
(.1) | |
(.2) |
s'N, s 1 n - .1;
SeN, ae - 9.28 9.29.
.2 Spq , . ( 10.1);
(.3) |
.3 ( , ..) SeN 2 ( .1).
.4 ( .1):
I = 0,18 (H + bsl);
II = 0,36 (H + bsl) - , , ;
II III ≤ 0,8 (H + bsl); IV < 1,6 (H + bsl) - .
()