Pin-Pile Wall Evaluation

摘要

A pin-pile wall was constructed for correcting a landslide along PA Route 66 northeast of Pittsburgh, PA. The wall was 310 feet long and varied in height from 16 to 28 feet. The wall consisted of a 6 ft-wide 3 inch-deep reinforced concrete cap-beam through which 375, 5-inch diameter cast-in-place reinforced concrete piles (pin-piles) were installed at different angles to both horizontal and vertical direction. The wall was instrumented and tested. The results lead to the following conclusions: The pin-pile system provides a positive solution for correction of smaller landslides; The system has the advantage over conventional methods by requiring no excavation and providing rapid construction and an economical alternate; and The present design method appears to work, but needs additional study for developing a more rational method.