Abstract: Deep excavation supporting projects with the constraint of rightofway are frequently encountered during the construction. The conventional supporting methods under this situation are: internal support; rakes; partial internal supports, doublerow piles and topdown construction. All above mentioned supporting methods are complicated and time consuming. An innovative excavation supporting system is introduced with a project case history. The new supporting system is the combination of conventional doublerow pile and vertical ground anchors. The horizontal anchors in the conventional supporting system are switched to the vertical direction. Since the doublerow piles and groundwater anchors are conventional construction technique, the construction of the new supporting system can be simplified.

Key words: DoubleRow Piles；Vertical Ground Anchor, New Deep Excavation Supporting System