With its advantages of low construction cost and strong spanning ability,high-pier long-span continuous rigid frame bridges have been widely used in bridge construction under adverse natural conditions such as mountainous valleys.This paper delves into the stability issues of high-pier long-span continuous rigid frame bridges during construction.By selecting four typical sections from the construction process,numerical simulation techniques are applied to analyze the flow field velocity,vortex formation,and pressure distribution characteristics at various positions within the sections,thereby obtaining the three-component force coefficients for each section.Finally,the flutter stability parameter F is used for comprehensive evaluation to determine the flutter stability of the main beam under construction conditions,in order to provide important theoretical basis and technical support for ensuring the safety and durability of bridge construction.
维普
万方数据