Non linear analysis by finite element method of rigid slab pavements in local airports

الملخص EN

In this research, the main factors influencing slabs analysis of local airport pavements were studies.

The finite element method is used for the analysis of single slab in pavement system.

The type of element that adopted herein is the 8-noded (serendipity) element, with consider thick flat shell element has been considered.

In other word, the membrane element is combination with bending element for result a shell element.

The (ABAS-PROGRAM) is modified for have been ability for analysis the arbitrary quadrilateral shape with various boundary conditions.

This program is used as nonlinear elastic on normal (linear and nonlinear) and tangential foundation.

Additional, the layer approach is applied to complete the integration in z-direction after transferring it to isoparametric coordinate ξ in finding global stiffness matrix.

The Cauchy elastic model is adopted for study the slab concrete pavement behavior.

The results presented within several applications.

At start this application, the thickness slab pavement is taken in calculate the bending stresses and deflections under center of slab pavement.

The subgrade reaction value is taken here for comparison the amount of deflection and bending stress for three moving type free, pin and fix boundary condition.

Addition, the dimensions of single slab pavement are effect widely for free in side with pin and fix condition in other side about 28.57 % for bending stresses and very large percent for deflection state.