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  γ_n = 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 h = 700 mm a1 = 70 mm a2 = 30 mm	Areas of reinforcement AS1 = 48.258 cm2 AS2 = 3.393 cm2

 

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 %