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Objectives. This article discusses options for additional restraints for support structures made from polymer dowels. The issue of increasing the stability of polymer sheet piles plays a key role in the design and construction of facilities using this type of material. The article compares two variants of the restraining devices and compares them with the non-reinforced version using the example of a notch of the same depth. Methods.The calculations are carried out by the CoulombMohr methods implemented in the GEO5 software package module “Pit Fencing Analysis. Result.The obtained calculations showed the possibility of using both types of restraints in retaining structures made of polymer dowels. Conclusion.Calculations have shown the effectiveness of both methods in their use as additional restraints for supporting structures using PVC dowels.The variant with the installation of the support pipe allows to slightly reduce the deformation of the sheet pile structure, but it does not have the ability to adjust the vertical position of the wall, which is present in the variant with the anchor system by welding the threaded rods to the ends of the metal braces or using talreeps.

ASSESSMENT OF THE EFFICIENCY OF THE USE OF ADDITIONAL HOLDING DEVICES TO IMPROVE THE STABILITY OF SHEET PILES MADE OF POLYVINYLCHLORIDE