Cerucuk kepingan adalah salah satu jenis struktur penahan bumi yang memberikan sokongan terhadap tekanan permukaan bumi. Cerucuk kepingan mempunyai aplikasi yang luas dalam perlindungan cerun dan benteng jalan. Di Malaysia, konkrit pratuang adalah komponen IBS yang paling biasa. Objektif utama kajian ini adalah untuk mengkaji kesan jarak bersih di antara liang dan garis pusat liang pada bahagian web bagi cerucuk kepingan dan membandingkan dengan struktur cerucuk kepingan tanpa berliang. Analisis elemen ini dilakukan dengan menggunakan perisian unsur terhingga ANSYS dan LUSAS. Sejumlah 26 model yang terdiri daripada 5 jenis jarak bersih di antara liang dan 5 jenis diameter untuk liang yang berbeza termasuk model kawalan. Daripada hasil analisis, dapat disimpulkan bahawa semakin besar jumlah luas liang, semakin tinggi pengurangan kapasiti struktur. Jumlah luas liang dikawal oleh dua faktor, iaitu diameter perforasi dan jarak bersih di antara perforasi. Pengurangan maksimum dalam momen lentur pada retak pertama dan pesongan yang sepadan dengan model kawalan masing-masing adalah 52.12% dan 7.702%.
_______________________________________________________________________________________________________
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.
A computional study on influence of circular perforation in web on structural capacity of reinforced concrete sheet piles / Marcdo Jong Min Inn