Effect of geosynthetic stiffness and surcharge load on stability of reinforced earth segmental walls

الملخص EN

Geosynthetic-reinforced soil wall with modular blocks have been extensively employed in the construction of highways and railways due to its good performance, convenient construction, and easy quality control.

the service limit-state design requires accurate estimation of the lateral facing displacement at the end of construction as well as after years of creep.

the lateral deformation of reinforced soil zone is largely governed by reinforcement stiffness, and spacing.

on the other hand, the wall surface surcharge, density of the retained soil, also affect the lateral displacement and stability of such segmental wall.

this paper investigated the influence of these factors using 2-D numerical plaxis software, and recommendations proposed for the limitation of each factor were also provided.

the results of this study indicate that, to achieve the stability of the reinforced segmental retaining wall (RSRW) the geogrid stiffness should not be less than 1000 KN / m2, and spacing not more than 0.60 m.

on the other hand, the surcharge load has significant effect on stability of (RSRW).