Abstract:
There are many options to consider when it comes to dealing with the challenges associated with slope reinforcement stability and soil anchoring. Utilizing Percussion driven earth anchors (PDEAs) in conjunction with existing soil reinforcement technologies; or to replace traditional soil anchoring technologies can significantly reduce project cost, duration, and complexity. Â
Engineered percussion driven earth anchor systems reduce or eliminates the need for grading while significantly increasing global stability. PDEAs can complement vegetated and non-vegetated soil reinforcement systems. Vegetated systems utilize a rolled erosion control product that facilitates vegetation growth; and offers improved filtration; and allow for cleaner, cooler water discharges. Non-vegetated systems typically utilize articulated concrete blocks, cement impregnated fabrics, or wire-enclosed riprap; and offer superior mechanical and environmental durability. Both systems provide a surficial membrane that can be used with PDEAs to increase global slope stability by intersecting shallow failure planes.
Percussion driven earth anchors are also ideal alternatives for light to medium duty tension anchor applications. PDEAs can provide unmatched performance and simplicity relative to their low cost as opposed to traditional soil anchoring techniques such as soil nails and helical piles. PDEAs are a smaller, lighter, and cheaper anchoring system which allows them to be installed with smaller and simpler equipment. This reduces cost and challenges with site clearance and location.
This presentation will review components typically used in engineered slope reinforcement and stability systems; as well as where and how they can be used to replace traditional soil anchoring technologies. We will discuss the parts of a PDEAs assembly and how the anchor system works. We will discuss soil reinforcement products, their components, performance differences, and proper installation techniques. We will also discuss how to identify scenarios where PDEAs are superior tie-back technology and how they can be incorporated into existing designs.