8.1.53 , , , , ( 8.14).
, 8.1.46 - 8.1.52.
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8.14 - ,
8.1.54 , ( 8.15).
0138S10-03623
8.15 - , ( )
, :
(Mx,ult - Mx) × (My,ult - ) - 2xy ³0; (8.100)
Mx,ult ³ Mx;(8.101)
My,ult ³ My; (8.102)
Mxy,ult ³ Mxy, (8.103)
, , - , ;
Mx,ult, My,ult, Mxy,ult - ,
. Mx,ult My,ult , X Y, , X Y, 8.1.1 - 8.1.13.
Mbxy,ult Msxy,ult :
Msxy,ult = 0,1 Rbb2h,(8.104)
b h - ;
Msxy,ult = 0,5 Rs (Asx + Asy) h 0,(8.105)
sx Asy - Y;
h 0 - .
, , .
8.1.57.
8.1.55 :
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(8.106)
Qx Qy - , ;
Qx,ult Qy,ult - , .
:
Qult = Qb + Qsw, (8.107)
Qb Qsw - , :
Qb = 0,5 Rbtbh 0;(8.108)
Qsw = qswh 0, (8.109)
qsw - , (8.59).
8.1.56 , , , , , ( 8.16).
8.1.57 , , .
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8.16 - , ( )
, .
, :
(Nx,ult - Nx)(Ny,ult - Ny) - N 2 xy ³ 0; (8.110)
Nx,ult ³ Nx;(8.111)
Nxy,ult ³ Ny;(8.112)
Nx, Ny Nxy - , ;
Nx,ult, Ny,ult Nxy,ult - , ;
Nx,ult, Ny,ult , X Y, , X Y, 8.1.14 - 8.1.19.
Nbxy.ult Nsxy.ult :
Nbxy.ult = 0,3 RbAb,(8.114)
b - .
Nsxy.ult = 0,5 Rs (Asx + Asy), (8.115)
Asx Asy - X Y .
, .
, , , .
8.1.58 , .
8.1.59 ( ), ( ) 8.2.
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