The Finite Element Analysis of Loading Stress in Cement Concrete Pavement Slab with Void Underneath 

Changjiang HE 

College of Civil Engineering, Chongqing Jiaotong University, Chongqing, 40074, CHINA 

Abstract: Due to the repeated action of vehicle ｌｏａｄ and water seepage, the base course becomes wet and soft, and the strength is gradually reduced in the actual use process of cement concrete pavement. A certain amount of plastic deformation and pumping mud will be produced under the base course of cement concrete pavement. And it will lead that concrete slab no longer keeps continuous contact with the base course in the local scope. So the pavement slab with void underneath will be produced under the slab corners, which leads to slab corner crack in the end. The paper analyzes loading stresses under various sizes of void underneath by Ansys. The paper is hoped to provide reference for the study of theory and lay the foundation of cement concrete constriction control. 

Keywords: Cement concrete pavement; Finite element; Void; Loading stresses