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 concrete (no prestressing) (to SP 52-101-2003), 2005, p. 128-129.

Initial data file:
Example 39.SAV
report – Arbat 39.doc.

Compliance with the codes: SP 52-101-2003, SP 63.13330.2012. 

Initial data:

b = 0,8  m	Width of the foundation
a1×a2 = 300×200 mm	Sizes of the load application area
Asx = Asy = 12,6 mm2 (1Ø4)	Cross-sectional area of reinforcement
N = 1000 kN	Vertical load
Concrete class Class of reinforcement	В10 В500

ARBAT initial data:

Importance factor γ_n = 1

Load arrangement:

Local load near one edge of an element

a = 300 mm b = 800 mm c = 400 mm d = 200 mm

 

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 - 4

Meshes:

Meshes   Rebars along X      Diameter 4 mm      Spacing ax = 100 mm      Number of rebars - 7   Rebars along Y      Diameter 4 mm      Spacing ay = 100 mm      Number of rebars - 8

Concrete:

Concrete type: Heavy-weight
Concrete class: B10

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

 

Comparison of solutions:

Check	strength condition of local compression
Guide	1000/1147,2 = 0,872
ARBAT	0,873
Deviation, %	0,1 %