Dynamic Axial Stiffness of Typical Restrained and Unrestrained Underground Pipe Joints
Meis, R
University of Nevada, Reno, NV.

Maragakis, M
University of Nevada, Reno, NV.

Siddharthan, R
University of Nevada, Reno, NV.

(Received 30 January 2004; accepted 21 April 2005)

Abstract
This paper presents the results of a testing program designed to determine the dynamic axial stiffness of some typical underground pipe joints, both restrained and unrestrained. Pipelines have been shown to be vulnerable to seismic motions and ground movement, causing joint damage and system failure. Many of these failures have occurred at unrestrained bell-and-spigot type pipe joints due to pull-out and intrusion of the spigot end into the bell end. The results of this research program are joint stiffness values and force capacities that can be used in the analysis and evaluation of failure potential of underground piping systems.

Keywords:
dynamic axial stiffness, pipe joint dynamic behavior, pipe joint dynamic stiffness, pipe joint testing, pipe joint testing methodology, pipe joints

Paper ID: JTE12540
DOI: 10.1520/JTE12540

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Author Meis, R Affiliation University of Nevada, Reno, NV. Author Maragakis, M Affiliation University of Nevada, Reno, NV. Author Siddharthan, R Affiliation University of Nevada, Reno, NV. Author Meis R, Maragakis M, Siddharthan R Title Dynamic Axial Stiffness of Typical Restrained and Unrestrained Underground Pipe Joints Symposium , Committee on