( 122482010)
() .
: -2 3 . , .
σ = 100
Qi, | F = ∑ Qi, | t, | , | δ, | , | |
σ = 200
|
|
Qi, | F = ∑ Qi, | t, | , | δ, | , | |
σ = 300
|
|
Qi, | F = ∑ Qi, | t, | , | δ, | , | |
. 1.
Fu ( ):
Qi i - ; qi Qi; 10 .
τ , Fu, σ:
A , 40 2.
σ, | Fu, | τ u, | |
|
|
. 2.
: f = tg φ =
φ = arctg () =
=
8