Effects of Pile Driving Through a Full-Height Precast Concrete Panel Faced, Geogrid-Reinforced, Mechanically Stabilized Earth (MSE)Wall

摘要

Geogrid-reinforced mechanically stabilized earth (MSE) walls are used for bridge approach/abutment applications. The bridge structure is typically supported on pile foundations constructed through the reinforced mass. The common construction technique is to build the MSE wall after the piles or the pile sleeves are installed. An alternative construction technique is to drive the piles through the constructed reinforced mass. This alternative offers significant construction advantages over the traditional approach. Full-scale demonstration/testing was conducted to investigate the feasibility of this alternative construction technique. The constructability of driving steel H piles through an HDPE geogrid reinforced MSE wall was demonstrated. This paper documents the wall construction and materials, instrumentation, and monitoring results of the full-scale demonstration/testing. The design implications and the advantages of this proposed construction technique are summarized.