1. ,
2. ,
3. ,
4. ,
5. , ,
6. .
, , . ., . Rbp, , , .
,
1.
2. ,
3. ,
4. -.
- , σloc.
:
1. σloc1,
2. σloc2.
σloc1 .
σloc1 ( ).
σloc1
Δσsp1,
Δσsp2
Δσsp3,
(Δσsp4)
Δσsp2
Δσsp2 ∆t .
∆t .
∆t 65º.
Δσsp2= 1,25∆t (),
Δσsp4
Δσsp4 , , . .
Δσsp4 = ∆λEs/ l,
l ,
∆λ , ∆λ = 2.
Δσsp4 = 0,
.
σloc2
.
Δσsp5 ,
Δσsp6 .
, 12 .
Δσsp5
Δσsp5 =εb,shEs.
εb,shEs= 0,002 - 35 ,
Δσsp5= 40 ,
εb,shEs= 0,0025 - 40,
|
|
Δσsp5= 50 ,
εb,shEs= 0,003 - 45 ,
Δσsp5= 60 ,
Δσsp6
φ b,cr- ,
μsp . μsp = Asp/A.
α α = Es/Eb.
σbp- , .
σloc
σloc= σloc1 + σloc2
σloc ≥ 100.
1. ?
2. ?
3. ?
4. ?