Deformation and Strength of an Underground Pipe : 2nd Report, Unsymmetrical Loading in Circumferential Direction

抄録

In this investigation, we are concerned with the deformation and strength of an underground pipe subjected to the soil pressure unsymmetrically distributed in circumferential direction, by using the fundamental differential equation of a cylindrical shell introduced by one of the authors. The ground is treated as a semi-infinite elastic solid. Boussinesq formulas or modified equations by Frohlich are used for the analytical calculation of soil pressure on a buried pipe. In addition, the modulus of the soil foundation is introduced. The results for the case of two traveling concentrated loads maintaining a constant distance on the soil surface are easily obtained by super-position of the solutions. Numerical calculations are reported and demonstrated for various combinations of the positions and distances of point of application of loads.