II-22-81(1995)
Administrator   
05.08.2008 .
   

( )

4.13.

 II-22-81                                                (17)

Nc - ;

Rc - , . 4.14;

Ac - , ;

d = 1,5 - 0,5 y - , , ;

d = 1 - ;

y - .

y = 1, y = 0,5.

, = 0,75 - , . 1 2 . 21, = 0,5 - , . 3 .

21

 

x1,

 

. 9, , , , ,

. 9, , , ,

1 , 50

2

2

1

1,2

2. , ,

1,5

2

1

1,2

3. . 35.

1,2

1,5

1

1

. , , x1, . 3 .

4.14. R

R = x R;                                                       (18)

 II-22-81                                                   (19)

- , . 4.16;

x - , , . 21.

R (17) : R, (18) , R = Rsk, Rsk - , (27) (28).

4.15. ( , , ..) ( , ) , x1, . 21.

, .

. , , , , .

4.16. :

) , , (. . 9,);

) , , , , . 9, ;

) , (. 9,); , bc h (. 9,.);

 II-22-81

. 9.

- -

) , , , , . 9, ;

) , , . 9,. , , , . 9,, ;

) , , , , . 9,e ;

) , , , () () e0 > 1/6l ( l - , e0 - ). , , , (. 9, );

) , , ( 1 2 . 9, ).

. , . 9, .

4.17. (, ..) , , . , .

, . 4.13 6.5.

: 1. , .

2. , , . 6.40 - 6.43.

 


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