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2011•Journal of Highway and Transportation Research and Development (English Edition)Requires access

Wind Tunnel Test of Aerodynamic Optimization Measures for Flutter Stability of Super Long-span Bridge with Truss Girder

Hongtao Xu, Haili Liao, Yong He, Junjun Zou

Open publisher page 5 citations

Abstract

Taken a grand long-span suspension bridge with truss girder for example, the influences of various aerodynamic controlling measures such as central-slotting in bridge deck plate, apron board and pneumatic winglets on the critical flutter wind speed of the girder was discussed through sectional model wind tunnel test. The test results indicate that (1) the flutter stability of bridges with truss girder can be improved by use of central-slotting in bridge deck plate, apron boards and pneumatic winglets, however, any of these measures cannot increase the critical flutter wind speed of the girder at all of angles of attack; (2) the combination of central-slotting in bridge deck plate and pneumatic winglets which is located on stiffening chord is the optima-lest one. This research can provide a reference for the wind resistant design of long-span bridge with truss girder.

About this research paper

What this paper is about

Taken a grand long-span suspension bridge with truss girder for example, the influences of various aerodynamic controlling measures such as central-slotting in bridge deck plate, apron board and pneumatic winglets on the critical flutter wind speed of the girder was discussed through sectional model wind tunnel test. The test results indicate that (1) the flutter stability of bridges with truss girder can be improved by use of central-slotting in bridge deck plate, apron boards and pneumatic winglets, however, any of these measures cannot increase the critical flutter wind speed of the girder at all of angles of attack; (2) the combination of central-slotting in bridge deck plate and pneumatic winglets which is located on stiffening chord is the optima-lest one. This research can provide a reference for the wind resistant design of long-span bridge with truss girder.

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Available abstract

Taken a grand long-span suspension bridge with truss girder for example, the influences of various aerodynamic controlling measures such as central-slotting in bridge deck plate, apron board and pneumatic winglets on the critical flutter wind speed of the girder was discussed through sectional model wind tunnel test. The test results indicate that (1) the flutter stability of bridges with truss girder can be improved by use of central-slotting in bridge deck plate, apron boards and pneumatic winglets, however, any of these measures cannot increase the critical flutter wind speed of the girder at all of angles of attack; (2) the combination of central-slotting in bridge deck plate and pneumatic winglets which is located on stiffening chord is the optima-lest one. This research can provide a reference for the wind resistant design of long-span bridge with truss girder.

Key concepts: Flutter, Structural engineering, Truss bridge, Aerodynamics, Bridge (graph theory), Engineering, Span (engineering), Truss

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Wind Tunnel Test of Aerodynamic Optimization Measures for Flutter Stability of Super Long-span Bridge with Truss Girder — Research Paper | ScholarLens