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Analysis for long-term response of pipes installed using horizontal directional drilling / A. G. Chehab in Journal of geotechnical and geoenvironmental engineering, Vol. 138 N° 4 (Avril 2012) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 138 N° 4 (Avril 2012) . - pp. 432–440 Titre : Analysis for long-term response of pipes installed using horizontal directional drilling Type de document : texte imprimé Auteurs : A. G. Chehab, Auteur ; I. D. Moore, Auteur Année de publication : 2012 Article en page(s) : pp. 432–440 Note générale : Géologie appliquée Langues : Anglais (eng) Mots-clés : Directional  drilling  Axial  force  Strength  Service  life  Creep  Relaxation  Polyethyle Résumé : Estimation of the pulling forces during installation is an important step in the successful design of a horizontal directional drilling project. Moreover, estimation of the postinstallation loads is important for the prediction of the long-term performance of the installed pipe. An algorithm is developed to calculate the short and long-term response of steel (elastic) and polymeric (viscoelastic and viscoplastic) pipes installed using horizontal directional drilling. The program simulates the movement of the pulling head, calculates the installation loads, and employs nonlinear, time-dependent constitutive models to calculate the polyethylene pipe response. The program is evaluated by comparing its calculations with known solutions, as well as with other commonly used load estimation methods. After evaluation, the analysis is used to analyze a typical horizontal directional drilling installation. It is shown that the pipe experiences cyclic response during installation and a combination of creep and stress relaxation in the long-term. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000608 [article] Analysis for long-term response of pipes installed using horizontal directional drilling [texte imprimé] / A. G. Chehab, Auteur ; I. D. Moore, Auteur . - 2012 . - pp. 432–440. Géologie appliquée Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 138 N° 4 (Avril 2012) . - pp. 432–440 Mots-clés : Directional  drilling  Axial  force  Strength  Service  life  Creep  Relaxation  Polyethyle Résumé : Estimation of the pulling forces during installation is an important step in the successful design of a horizontal directional drilling project. Moreover, estimation of the postinstallation loads is important for the prediction of the long-term performance of the installed pipe. An algorithm is developed to calculate the short and long-term response of steel (elastic) and polymeric (viscoelastic and viscoplastic) pipes installed using horizontal directional drilling. The program simulates the movement of the pulling head, calculates the installation loads, and employs nonlinear, time-dependent constitutive models to calculate the polyethylene pipe response. The program is evaluated by comparing its calculations with known solutions, as well as with other commonly used load estimation methods. After evaluation, the analysis is used to analyze a typical horizontal directional drilling installation. It is shown that the pipe experiences cyclic response during installation and a combination of creep and stress relaxation in the long-term. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000608