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Betonarme Yapılar
Dr. Haluk SesigürI.T.U. Faculty of ArchitectureStructural and Earthquake Engineering WG
Strength of Materials
Internal Force Diagrams
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Strength of MaterialsInternal Force Diagrams
CLASSIFICATION OF BEAMS AND LOADS
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Strength of MaterialsInternal Force Diagrams
CLASSIFICATION OF BEAMS AND LOADS
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Strength of MaterialsInternal Force Diagrams
CLASSIFICATION OF BEAMS AND LOADS
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Strength of MaterialsInternal Force Diagrams
TYPES OF CONNECTIONS
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Strength of MaterialsInternal Force Diagrams
TYPES OF CONNECTIONS
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Strength of MaterialsInternal Force Diagrams
TYPES OF CONNECTIONS
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Strength of MaterialsInternal Force Diagrams
TYPES OF CONNECTIONS
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Strength of MaterialsInternal Force Diagrams
TYPES OF LOADS
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Strength of MaterialsInternal Force Diagrams
TYPES OF LOADS
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Strength of MaterialsInternal Force Diagrams
DEFORMATION OF STRUCTURES
Deformations in beams due to point loadsPoint loaded beams
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Strength of MaterialsInternal Force Diagrams
DEFORMATION OF STRUCTURES
A downward deformation leads TENSION (T)stresses at the bottom of the beam element
T
T
An upward deformation leads TENSION (T)stresses at the top of the beam element
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Strength of MaterialsInternal Force Diagrams
SHEAR FORCE
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Strength of MaterialsInternal Force Diagrams
BENDING MOMENT
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Strength of MaterialsInternal Force Diagrams
DEFORMATION DUE TO BENDING (T:Tension, C:Compression)Negative bending
Positive bending (hogging)
Negative bending (sagging)
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Strength of MaterialsInternal Force Diagrams
+
+
_ ( V )
( M )
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Strength of MaterialsInternal Force Diagrams
+_ ( V )
( M )+
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Strength of MaterialsInternal Force Diagrams
Shear Force Diagram of the point loaded beam - Follow the arrows
+_ ( V )
Note that:Between point forces shear forcediagram shows constant variation
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Strength of MaterialsInternal Force Diagrams
Bending Moment Diagram – Area under shear force diagram
+
+
_ ( V )
( M )
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Strength of MaterialsInternal Force Diagrams
Bending Moment Diagram – Area under shear force diagram
+
+
_ ( V )
( M )
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Strength of MaterialsInternal Force Diagrams
Bending Moment Diagram – Area under shear force diagram
+
_ ( V )
( M )
+
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Strength of MaterialsInternal Force Diagrams
Bending Moment Diagram – Area under shear force diagram
+
_ ( V )
( M )
+
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Strength of MaterialsInternal Force Diagrams
Bending Moment Diagram – Area under shear force diagram
+
( V )
( M )
+_
Total area undershear force diagram
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Strength of MaterialsInternal Force Diagrams
Bending Moment Diagram – Area under shear force diagram
+
( V )
( M )
+_
Total area undershear force diagram
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Strength of MaterialsInternal Force Diagrams
Shear Force and Bending Moment Diagramsarrows
+
+
_ ( V )
( M )
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Strength of MaterialsInternal Force Diagrams
+_
( V )
Shear Force Diagram of the uniform distributed loaded beam
For this load condition shear forces are decreasing linearly between point forces. To beginThe diagram follow the arrow at point A, 12kN than calculate the shear force variation dueTo distributed load. shear forces decreasing linearly (4kN/m x 6m=24kN)from +12kN at point A to (+12-24 = -12kN) -12kN at point G. At the right support close the
Shear force diagram with the force RG=12kN.
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Strength of MaterialsInternal Force Diagrams
TYPES OF CONNECTIONS
+_ ( V )
( M )+
MB=(12+8)x0.5x1=10kNm
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Strength of MaterialsInternal Force Diagrams
TYPES OF CONNECTIONS
_ ( V )
( M )+
+
MC=10+(8+4)x0.5x1=16kNm
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Strength of MaterialsInternal Force Diagrams
TYPES OF CONNECTIONS
_ ( V )
( M )+
+
MD=16+4x1x0.5=18kNm
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Strength of MaterialsInternal Force Diagrams
TYPES OF CONNECTIONS
( V )
( M )+
+ _
MD=18-4x1x0.5=16kNm
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Strength of MaterialsInternal Force Diagrams
TYPES OF CONNECTIONS
( V )
( M )+
+_
ME=16-(4+8)x1x0.5=10kNm
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Strength of MaterialsInternal Force Diagrams
TYPES OF CONNECTIONS
( V )
( M )+
+_
ME=10-(12+8)x1x0.5=0
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Strength of MaterialsInternal Force Diagrams
( V )+
_
VB=29.5-12x3=-6.5kN
VC=-6.5-5=-11.5kN
VD=-11.5-5=-16.5kN
EXAMPLE:
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Strength of MaterialsInternal Force Diagrams
( V )
( M )
_
+
+
MF=29.5x2.46x0.5=36.3kNm
F
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Strength of MaterialsInternal Force Diagrams
( V )
( M )
_
+
+ 0.54m
MB=36.3-6.5x0.54x0.5=34.5kNm
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Strength of MaterialsInternal Force Diagrams
( V )
( M )
_
+
+ 0.54m
MB=34.5-6.5x1=28kNm
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Strength of MaterialsInternal Force Diagrams
( V )
( M )+
+ 0.54m
MB=28-11.5x1=16.5kNm
_
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Strength of MaterialsInternal Force Diagrams
( V )
( M )+
+ 0.54m
MB=16.5-16.5x1=0
_
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Strength of MaterialsInternal Force Diagrams
LETS REMEMBER
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Strength of MaterialsInternal Force Diagrams
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Strength of MaterialsInternal Force Diagrams