Method of suspending bridge-girder of suspension bridge
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United States of America Patent
Stats
-
Dec 22, 1998
Grant Date -
N/A
app pub date -
Feb 18, 1997
filing date -
Apr 5, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of suspending a bridge-girder of a suspension bridge is provided. The method is characterized in that where the bridge-girder is suspended by main cables supported by main towers through hanger ropes, the central portion of each of a plurality of horizontal beams mounted on each of the main towers in spaced part relationships with one another vertically are connected to the lateral sides of the bridge-girder by means of obliquely extending auxiliary cables 7. According to this suspension method, the torsional natural frequency of the bridge-girder increases so that the flutters and vortex induced oscillation harmful to the bridge-girder are controlled.
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