Evaluation of stresses due to the group effect of buried pipeline.

Abstract

Buried pipes are widely used in the construction industry. The stresses on these pipes depend on the magnitude and distribution of external and internal loads to which they are subjected, as well as the soil conditions, material, and geometric conditions. The failure of a buried pipe occurs when the applied stresses exceed the structural capacity of the pipe. The use of computational software employing the finiteelement method is becoming increasingly common as it allows for the inclusion of a greater number of boundary conditions compared to approximate equations. This enables a more realistic assessment of the problem. This work evaluates the stresses in pipes obtained from differentmodels of buried pipes that serve as surface drainage in roads using finiteelements. From these models, the influnce of the group effecton the axial force, shear, and bending moment that lead to failures is analyzed. The proposed models are valid for evaluating the group effecton the stresses of buried pipes and thus eliminate uncertainties that arise when using approximate equations.