Cantilevered signal, sign, and light support structures are used nationwide on major Interstate highways, national highways, local highways, and at local intersections for traffic control. Recently, a number of failures of these structures have been characterized as wind-induced fatigue failures. It is widely accepted that there is considerable lack of accuracy in the calculation of wind-induced loads on high mast light poles (HMLPs) in both the AASHTO and the Canadian Highway Bridge Design Code provisions. A coupled model for predicting buffeting- and vortex shedding–induced response for slender support structures was developed. To accomplish this, monitoring of long-term response behavior of an HMLP subjected to wind-induced vibration and wind tunnel experiments was used to study global behavior and to extract important parameters. From the long-term field monitoring and wind tunnel experiments, the two critical types of wind vibration (natural wind gusts or buffeting and vortex shedding) were individually identified for in-depth analysis. Finally, a coupled dynamic model in time domain was developed for predicting the wind-excited response and was validated by comparing the simulation results with the field-collected data. The fatigue life of a specific HMLP was also estimated with the stress amplitudes predicted by the time-domain model and was validated with statistical extrapolation of the field data.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Development of a Procedure for Fatigue Design of Slender Support Structures Subjected to Wind-Induced Vibration


    Additional title:

    Transportation Research Record


    Contributors:


    Publication date :

    2009-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    A Modell for Ice Induced Vibration of Slender Offshore Structures

    Riska, K. / Baarman, L. | British Library Conference Proceedings | 1993


    Design Fatigue Load of Sign Support Structures Due to Truck-Induced Wind Gust

    Hosch, Ian E. / Fouad, Fouad H. | Transportation Research Record | 2010



    FATIGUE OF SLENDER OFFSHORE STRUCTURES: MOORINGS, RISERS, AND UMBILICALS

    Wu, Y. / Wang, T. / Vijayaraghavan, V. | British Library Conference Proceedings | 2020