Horizontal Directional Drilling: A Parametric Study of Stress Changes in Soil and a Footing Using Finite Element Analysis Softwar
Horizontal directional drilling (HDD) is a trenchless tunneling technology that is becoming increasingly popular especially for installing utility. However, this technology was developed somewhat recently in the 1970s, and it still makes up a relatively small percentage of pipe installations. Because of this, we may still be able to make significant improvements on the various standards and guidelines associated with HDD. This research examines the change in stress in the soil and a footing above an HDD installation depending on the the clearance, diameter, and if the pipe material is PVC, HDPE, steel, or DIP. The goal of this research is to better understand these stress patterns, allowing for more precise codes andguidelines,andthus more efficient and competitive designs and bids.