3-D NUMERICAL MODELLING OF CAKAR AYAM SYSTEM TO MAXIMIZE IT’S STABILITY PERFORMANCE

Agus Sulaeman, Sajiharjo Marto Suro, Salihin bin Jalali

Abstract


This paper presents an analysis of Cakar Ayam system using the finite element method. The basic concept of the Cakar Ayam system considers the passive-soil pressure creating a stiff condition of slab-pipe system. This means that the thin concrete slab floats on the supporting soil and the pipes serve as stiffeners slab concrete, stay vertical due to the passive-soil pressure. In this study, the simulation was done to the stiffness ratio of 0.02 to 1.2 under soil friction angle 20o, bearing capacity and displacement were recorded for each pairs then plotted in the graph.The study was intended to illustrate the basic mechanism of the Cakar Ayam system. Two cases have been considered for the parametric studies. The parameters investigated are thickness of slab and diameter of pipes. It is shown that such a Cakar Ayam system improves the behaviour of the raft foundation. It is also found that all the parameters used in the parametric studies influence the behaviour of the Cakar Ayam system.


Keywords


Cakar Ayam system;finite element;bearing capacity;displacement

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References


Daud, S., Junica, M.I., Sunaryo, M.E., Pertiwi, D. Kajian Dan Monitoring Hasil Uji Coba Sakala Penuh Teknologi Cakar Ayam Modifikasi. Kolokium Puslitbang Jalan dan Jembatan TA 2009, (2009).

Hardiyatmo, H. C. Analisis dan Perancangan Fondasi II. Edisi Kedua, Gadjah Mada University Press, (2011).

Tandjiria, V. Numerical Modelling of Chicken-Foot Foundation. Dimensi Teknik Sipil Volume 1, no. 1 Maret, (1999).

Badie, S. S. and Silva, P. Optimum Beam-To-Column Stiffness Ratio for Portal Frames. Sturcture Magazine, March, (2008).

Das, B.M. Principles of Foundation Engineering. Seventh Edition, Cengage Learning, (2007).


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