Design oriented linear-equivalent approach for evaluating the effect of tunneling on pipelines

Klar, Assaf; Elkayam, Itai; Marshall, Alec

Abstract

The process of tunneling is associated with ground movements which may lead to stressing of nearby existing buried infrastructure, and potentially poses a risk of damage. The need for an effective evaluation method of the potential risk increases with the ongoing expansion of underground space utilization. This paper presents a new approach for evaluating the interaction between an assumed input of greenfield tunneling displacements and an existing buried pipeline. The approach integrates new developments with previous research findings to establish a practical interaction analysis methodology that can be used in design. It involves the use of an elastic-continuum analysis to solve the soil-pipeline interaction together with an iterative calculation of the equivalent stiffness in order to consider soil nonlinearity. A set of simplified closed-form expressions, which can be used to evaluate maximum pipeline bending moments within the suggested framework, are presented in the paper. A comparison of the new method results against centrifuge test data and advanced discrete element-method simulations is presented in the paper. The obtained agreement provides validation of the new method over a wide range of tunneling-induced volume losses and pipeline parameters.

Citation

Klar, A., Elkayam, I., & Marshall, A. (2016). Design oriented linear-equivalent approach for evaluating the effect of tunneling on pipelines. Journal of Geotechnical and Geoenvironmental Engineering, 142(1), Article 04015062. https://doi.org/10.1061/%28ASCE%29GT.1943-5606.0001376

• Journal Article Type: Article
• Acceptance Date: May 28, 2015
• Online Publication Date: Jul 15, 2015
• Publication Date: Jan 1, 2016
• Deposit Date: Aug 2, 2018
• Journal: Journal of Geotechnical and Geoenvironmental Engineering
• Print ISSN: 1090-0241
• Electronic ISSN: 1943-5606
• Publisher: American Society of Civil Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 142
• Issue: 1
• Article Number: 04015062
• DOI: https://doi.org/10.1061/%28ASCE%29GT.1943-5606.0001376
• Public URL: https://nottingham-repository.worktribe.com/output/1105530
• Publisher URL: https://ascelibrary.org/doi/10.1061/%28ASCE%29GT.1943-5606.0001376
• Additional Information: ©2015 American Society of Civil Engineers