A mathematical model for a combined cable system of bridges

Dynamic Analysis of Suspension Bridge using Matlab Simulation

“…One limitation is that if a strong wind gust occurs while a heavy vehicle is crossing the bridge, then τ is likely to be abnormally low. If the lateral bridge response is studied, the turbulent component u should be used instead of w. As underlined by Macdonald [3], traffic-induced vibrations affect mainly the high frequency content of the bridge response. It should be possible to detect any nonnegligible traffic-induced response by comparing the low and high frequency part of the power spectral density (PSD) of the vertical bridge acceleration response, written S Az .…”

“…Another method is to consider only samples with a high mean wind speed. Macdonald [3] noted that an appropriate threshold wind speed for the Clifton suspension bridge may be 8 m/s. For the Lysefjord Bridge that limit is likely to be different.…”

“…Hui [1,2] did a detailed analysis of the wind conditions near the Stonecutter Bridge, which is subjected to both a sea and mountain wind, by using a wind mast. Macdonald [3] studied the response to wind and traffic load of the Clifton Bridge, which is a relatively shortspan suspension bridge crossing a narrow gorge. Cai [4] proposed a detailed analytical model to study both wind and traffic induced vibrations of a long span bridge, but no detailed measurement campaign of such phenomenon has been found, apart from Macdonald [3].…”

“…Macdonald [3] studied the response to wind and traffic load of the Clifton Bridge, which is a relatively shortspan suspension bridge crossing a narrow gorge. Cai [4] proposed a detailed analytical model to study both wind and traffic induced vibrations of a long span bridge, but no detailed measurement campaign of such phenomenon has been found, apart from Macdonald [3]. In Norway, the coastal highway E39 project requires a detailed description of the wind conditions and bridge response in complex topography such as fjords.…”

Analysis Strategy and Parametric Study of Cable-Stayed-Suspension Bridges

“…Therefore, special FEM programs needed to be independently developed (Karoumi 1999;Xiao and Xiang 1999b;Zhu 2009). Furthermore, a mathematical model was also proposed to investigate the dynamic behavior of the cable-stayed-suspension bridge (Konstantakopoulos and Michaltsos 2010). However, a convenient method with a normal FEM program for determining the reasonable finished dead load state of the cable-stayedsuspension bridge is not found, and parameters related to the structural performance of this type of bridges have not been studied.…”