Earthquake Response of Buried Insulated Pipes

by Aly Hindy, Engr.; Stone & Webster, Toronto, Canada,
Milos Novak, (M.ASCE), Prof.; Univ. of Western Ontario, Ontario, Canada,

Serial Information: Journal of the Engineering Mechanics Division, 1980, Vol. 106, Issue 6, Pg. 1135-1149

Document Type: Journal Paper


The effect of insulation on axial stresses induced in straight buried pipes due to earthquakes is investigated theoretically. Complex soil reactions are formulated for a viscoelastic medium composed of a softer inner ring and a stiffer outer layer. Seismic response of pipes is analyzed using both distributed and lumped mass models. The excitation is represented by traveling harmonic waves, fully-correlated transient waves, and partially-correlated random ground motion. It is found that insulation always reduces the stresses in straight pipes but this reduction is not as great as might be expected.

Subject Headings: Buried pipes | Earthquakes | Building insulation | Axial forces | Ground motion | Soft soils | Viscoelasticity | Seismic tests

Services: Buy this book/Buy this article


Return to search