Local Compression Analysis

Objective: Check the local compression analysis of the foundation

Task: Verify the correctness of the local compression analysis

References: Guide on designing of concrete and reinforced concrete structures made of heavy-weight or lightweight concrete (no prestressing) (to SNiP 2.03.01-84), 1989, p. 101-102.

Initial data file:

Example 48.SAV
report – Arbat 48.doc.

Compliance with the codes: SNiP 2.03.01-84*. 

Initial data:

b = 0,8  m	Width of the foundation
a1×a2 = 300×200 mm	Sizes of the load application area
Asx = Asy = 7,1 mm2 (1Ø3)	Cross-sectional area of reinforcement
N = 1000 kN	Vertical load
Concrete class Class of reinforcement	В12,5 Вр-І

ARBAT initial data:

Importance factor γ_n = 1

Load arrangement:

Local load applied to a part of length and width of an element Local edge load within a protruding part of a wall or a pier

a = 300 мм b = 800 мм c = 200 мм d = 200 мм Number of load application areas - one

 

Lateral reinforcement by flat meshes:

Class of reinforcement: B500
Arrangement of meshes

Concrete cover a = 20 mm Spacing of meshes b = 100 mm Number of meshes - 2

Meshes:

Meshes Rebars along X      Diameter 3 mm      Spacing ax = 100 mm      Number of rebars - 4 Rebars along Y      Diameter 3 mm      Spacing ay = 100 mm      Number of rebars - 5

 

Concrete:

Concrete type: Heavy-weight
Concrete class: B12,5

Service factor for concrete
γb2	allowance for the sustained loads
	resulting factor without γb2	1

 

Comparison of solutions:

Check	strength condition of local compression
Guide	1000/1182 = 0,846
ARBAT	0,84
Deviation, %	0,7 %