Open AccessAnalysis of Modal Characteristics of Long-Span Suspension Bridges with Ruled Surface Spatial Cables
Author(s) -
Honglei Zhang,
Xu Wang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/719/3/032058
Subject(s) - suspension (topology) , flutter , span (engineering) , structural engineering , bridge (graph theory) , vibration , modal , bending , hyperboloid , modal analysis , engineering , acoustics , materials science , physics , aerodynamics , mathematics , optics , composite material , finite element method , aerospace engineering , medicine , homotopy , pure mathematics
In this paper, new concepts of single-leaf hyperboloid spatial cable suspension bridges and hyperbolic parabolic spatial cable suspension bridges are proposed. Combined with the 4000 m long-span Messina Strait Bridge, dynamic modal analyses of the spatial cable suspension bridges are carried out. The results show that the spatial suspension bridges have a torsional vibration mode appearing much later, a torsional-bending frequency ratio greatly improved, a critical wind speed for flutter greatly improved, and better wind stability, as compared with the parallel suspension bridge.