CHAPTER 3
ANALYSIS OF STATICALLY DETERMINATE
STRUCTURE:
THREE HINGED
ARCHES
, CO1-PO1
CO1 :Compute forces and stability in
statically determinate and indeterminate
structures. (C3)
PO1 :Apply knowledge of mathematics,
natural science, engineering fundamentals and
an engineering specialization to wide practical
procedures and practices.
,LEARNING OUTCOMES (LO):
At the end of this topic, students should be
able to:
❑ Determine axial force (thrust), shear force
and bending moment for parabolic and
semi – circular arches.
, INTRODUCTION
➢ A curved structure that are used to reduce the bending
moments in long span structures such as bridges.
➢ An arch acts as an inverted cable where it receives its
load mainly in compression.
➢ The arch carries most of the load axially with bending
moment greatly reduced due to the curvature of the arch.
➢ Advantages
❑ Bending moment in arch rib has been reduced by the
action of the horizontal thrust at the abutments
ANALYSIS OF STATICALLY DETERMINATE
STRUCTURE:
THREE HINGED
ARCHES
, CO1-PO1
CO1 :Compute forces and stability in
statically determinate and indeterminate
structures. (C3)
PO1 :Apply knowledge of mathematics,
natural science, engineering fundamentals and
an engineering specialization to wide practical
procedures and practices.
,LEARNING OUTCOMES (LO):
At the end of this topic, students should be
able to:
❑ Determine axial force (thrust), shear force
and bending moment for parabolic and
semi – circular arches.
, INTRODUCTION
➢ A curved structure that are used to reduce the bending
moments in long span structures such as bridges.
➢ An arch acts as an inverted cable where it receives its
load mainly in compression.
➢ The arch carries most of the load axially with bending
moment greatly reduced due to the curvature of the arch.
➢ Advantages
❑ Bending moment in arch rib has been reduced by the
action of the horizontal thrust at the abutments
