A computional study on influence of circular perforation in web on structural capacity of reinforced concrete sheet piles Marcdo
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Date
2019-06
Authors
Jong Min Inn
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Abstract
Sheet piles are one type of earth retaining structures which provide support
against lateral earth pressure. Sheet piles have wide application in slope protection and
road embankments. In Malaysia, precast concrete is the most common IBS component.
Precast reinforced concrete sheet piles are manufactured with corrugated cross section
and a pile head for easy installation using vibro hammer. The main objectives of this
study are to study the effect of clear spacing between perforations and diameter of the
perforation on the web section of sheet piles and compare the structural capacity of sheet
pile with perforated web and without perforated web. Finite element analysis was carried
out using finite element software ANSYS and LUSAS. A total of 26 models consisting
5 different clear spacing between perforation and 5 different diameters of perforation
together with a controlled model have been considered. From the analysis, it can be
concluded that that the larger the total area of perforation at the web section, the higher
the reduction of structural capacity of the concrete. The total area of perforation is
governed by two factors, which are diameter of perforation and clear spacing between
perforation. The maximum reduction in bending moment at first crack and the
corresponding deflection relative to the control model are 52.12 % and 7.702%
respectively.