Annual Meeting 2005, Japan Association for Wind Engineering
Session ID : s7-6
Conference information
Effect of web angle on the aerodynamic characteristics of a pentagonal section
Details
It has been discussed about the construction of a super-long bridgeexceeding the span length of the Akashi-Strait Bridge that is thelongest bridge in the present world. To realize the super-long bridge,the research on the aeroelastic vibration of suspension bridge must be advanced in more detail. Although an additional member of fairing so on is often used as one of suppression methods of aeroelastic vibrations, using the additional members for aeroelastic vibration control is not favorable from point of view of cost performance and maintenance. A pentagon cross-section was proposed as a cross section of girder that satisfied cost performance and aeroelastic stability without using additional members for suppression of aeroelastic vibration. In the present paper, the development of bridge girder cross section is dealt with for the super-long bridge longer than the Akashi-Strait Bridge by changing the slope of web of the pentagon cross section through measuring 3-compornent of aerodynamic forces and aeroelastic responses.
