The cement pavement panels of rural roads in Fujian Province are mostly in the form of single lanes of 4.5*5 meters.With the increase of traffic volume,it is currently directly widened by 2 meters to a double lane.This article establishes a finite element model,using parameters such as fric-tion coefficient between new and old slabs,different spacing of pull rods,and different soil modulus as variables,to study the changes in stress before and after widening the cement slab.It is found that the difference in modulus between new and old subgrade is the biggest influencing factor on the tensile stress at the bottom of the slab,and the spacing of pull rods has little effect on the stress,but has a significant impact on the deflection difference on both sides of the slab joint.
维普
万方数据