Skip to content

Reinforced Soil (RS) wall structures have proved their importance in infrastructure development since last few decades in India. Walls reinforced with polymeric strips and segmental concrete panels as fascia are being extensively used due to its flexibility, economy, speed of construction and long term performance. This paper presents a case study of RS wall approaches of flyover structure for the green field access controlled expressway project. Vertical RS wall of height 16m was designed and executed on weak soil stratum. Clayey soil with low to medium plasticity in foundation strata was susceptible for settlement after construction of RS wall. This necessitated ground improvement by soil replacement along with high strength polyester geogrid as basal reinforcement to achieve required bearing capacity. RS wall for the approaches were planned at skew angle of less than 40 degree which added further complexity and challenges. Authority desired construction of RS wall to be completed in short span of three months which was made possible due to use of polymeric strip reinforcement, the perfect overall planning of project and meticulous construction. Structure wall was monitored from beginning to end of construction and till the flyover got opened for highway traffic.