Application Of Pile-Anchor Support System In Deep Pits

At present, the excavation pit becomes deeper and deeper, and the row-pile can not satisfy the need. With the deepening of the pit, the support effect with row-pile is not good especially for the bad soil condition, and the large displacement easily occurs at the top of the piles, which often leads to the failure of the whole support system.To the above mentioned problem, the anchor technique was applied in deep pit support in the paper. In this technique, the row-pile combined with anchor forms the new supporting system. Based on the detail discussions about the basic principle of the system and stability analysis, it is concluded that the system is suitable to the supporting engineering of deep foundation pit.With layer-by-layer excavation method to calculate the engineering case, and to compare with other methods, the conclusion was given that this method was adaptation to the structure design and calculation of line-pine and anchor-pile. In the last part of this paper, the shoring of trench optimization by constructing mathematical model was discussed simply, and the best computation way was provided by verification of real example.