DUCTILITY ASSESSMENT OF REINFORCED CONCRETE PILE-TO-PILE CAP CONNECTIONS IN APPLICATION
ABSTRACT: Ground motion
occurred during moderate seismic event
causes pile-to-pile cap connections producing a
large curvature demand and
a plastic hinge
at the pile
head. Severity damage along the
pile is controlled
by limiting the curvature
ductility demand in
the potential plastic
hinge region of
the pile. The strength
and stiffness of
the soil-pile interaction and
the equivalent plastic
hinge length of
the pile directly
quantify the curvature
ductility demand of
fixed pile-to-pile cap connection. A
routine that incorporates the limit
state analysis based
on the kinematic
model and the moment-curvature analysis
was developed to
calculate the displacement
ductility factor to
the local curvature
ductility demand. A fixed-head
pile-to-pile cap connection
embedded in cohesive
and cohesionless soils
was studied. The result shows
that the first
plastic hinges for
both soil conditions
occur at the
interface of fixed-head
pile connection. The ductility assessment demonstrates that curvature
ductility demands for
the fixed-head pile
embedded in cohesive
soil is higher compared to the
pile embedded in cohesionless soil providing a different location of the second
plastic hinges.
Keywords: curvature demand,
ductility demand, plastic hinge, fixed-head, pile-to-pile cap connection
Author: Mochamad Teguh
Journal Code: jptsipilgg090009
