公开(公告)号：EP0057052B1

公开(公告)日：1985-04-17

申请号：EP82300078.1

申请日：1982-01-07

申请人： NMI Limited

发明人： Richardson, John Roy

IPC分类号： E01D1/00 ,  E01D11/00

CPC分类号： E01D11/02

公开(公告)号：EP0057052A1

公开(公告)日：1982-08-04

申请号：EP82300078.1

申请日：1982-01-07

申请人： NMI Limited

发明人： Richardson, John Roy

IPC分类号： E01D1/00 ,  E01D11/00

CPC分类号： E01D11/02

摘要： A suspension bridge has a first deck 10 supported from a pair of suspension cables 14 and 15 by hangers 12 and 13 and a second deck 11 independently supported from a pair of suspension cables 18 and 19 by hangers 20 and 21. The two parallel decks are separated by a gap whose width is not less than that of either of the decks and is preferably three or more times the width of a deck. The decks are joined at intervals diagonal shear braces so that the two decks behave essentially as a single rigid body in regard to rotation in the plane of Figure 2. This results in very high aerodynamic damping of both torsional and bending modes of oscillation.