Strength Analysis of a Section
Objective: Check of the strength analysis of the section
Task: Verify the correctness of the strength analysis of the section
References: Guide on designing of concrete and reinforced concrete structures made of heavy-weight concrete (no prestressing) (to SP 52-101-2003), 2005, p. 28.
Initial data file:
Example 6 Guide to SP.SAV
report – Arbat 6 SP.doc.
Compliance with the codes: SP 52-101-2003.
Initial data:
b×h = 300×700 mm | Section sizes |
а = 70 mm | Distance to the c.o.g. of tensile reinforcement |
а/= 30 mm | Distance to the c.o.g. of compressed reinforcement |
As = 4826 mm2 (6Ø32) | Cross-sectional area of tensile reinforcement |
A/s = 339 mm2 (3Ø12) | Cross-sectional area of compressed reinforcement |
М = 630 kNm | Bending moment |
Concrete class | В20 |
Class of reinforcement |
А400 |
ARBAT initial data:
Importance factor γn = 1
Importance factor (serviceability limit state) = 1
Member length 3 m
Effective length factor in the XoY plane 1
Effective length factor in the XoZ plane 1
Random eccentricity along Z according to SNiP 52-01-2003 (Russia)
Random eccentricity along Y according to SNiP 52-01-2003 (Russia)
Structure is statically determinate
Limit slenderness - 200
Plane of loading
Section:
b = 300 mm
|
|
Reinforcement |
Class |
Service factor |
Longitudinal |
A400 |
1 |
Transverse |
A240 |
1 |
Concrete:
Concrete type: Heavy-weight
Concrete class: B20
Service factor for concrete |
||
---|---|---|
γb1 |
allowance for the sustained loads |
1 |
γb2 |
allowance for the failure behavior |
1 |
γb3 |
allowance for the vertical position during concreting |
1 |
γb4 |
allowance for the freezing/thawing and negative temperatures |
1 |
Humidity of environmental air - 40-75%
Comparison of solutions:
Check |
Strength of the section |
Guide |
630/606,2 = 1,039 |
ARBAT |
1,039 |
Deviation, % |
0 % |