0
  • DE
  • EN
  • FR
  • Base de données et galerie internationale d'ouvrages d'art et du génie civil

Publicité

Study of tension in mooring cables under parametric excitation for submerged floating tunnels

 Study of tension in mooring cables under parametric excitation for submerged floating tunnels
Auteur(s): , ,
Présenté pendant IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016, publié dans , pp. 1927-1934
DOI: 10.2749/stockholm.2016.1880
Prix: € 25,00 incl. TVA pour document PDF  
AJOUTER AU PANIER
Télécharger l'aperçu (fichier PDF) 0.19 MB

The coastal highway E39 project in Norway is considering the construction a Submerged Floating Tunnel (SFT). Some of the preliminary designs use a mooring system to maintain the structure in the pr...
Lire plus

Détails bibliographiques

Auteur(s): (Norwegian University of Science and Technology, Trondheim, Norway)
(Norwegian University of Science and Technology, Trondheim, Norway)
(Norwegian University of Science and Technology, Trondheim, Norway)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016
Publié dans:
Page(s): 1927-1934 Nombre total de pages (du PDF): 8
Page(s): 1927-1934
Nombre total de pages (du PDF): 8
Année: 2016
DOI: 10.2749/stockholm.2016.1880
Abstrait:

The coastal highway E39 project in Norway is considering the construction a Submerged Floating Tunnel (SFT). Some of the preliminary designs use a mooring system to maintain the structure in the prescribed position. The main environmental load in such a system will be long period swell waves. This low frequency excitation produces a parametrically excited system. Certain situations might lead to parametric resonance or dynamic instability that causes excessive vibrations of the cable and the SFT. However, it is unclear how parametric excitation affects the cable tension of a mooring system. Correct design should avoid excessive forces that might break the line or very small forces that lead to momentarily slack cables. The aim of this paper is to assess the validity of using the stability charts for the design of mooring lines with respect to safe levels of cable forces. This is achieved through the numerical analysis of a cable model using Abaqus. Cable vibrations and cable forces are analysed and compared for a range of amplitudes and frequencies of the support motions. Also the dry and submerged cases are compared, clearly exposing the repercussion of the hydrodynamic effects.

Mots-clé:
câble

Types d'ouvrages