Research on the application of stress free state method for closure of deep water steel truss bridge without pier cap
Special consideration should be given to the construction process and stress system control system for the pile foundation construction of steel truss bridges without abutments in deep water areas.This article relies on the Lanjiawan Extra Large Bridge project in Hanyuan,Sichuan,and analyzes and calculates the construction technology of the steel truss bridge without pile foundation and several mechanical studies on the closure construction based on the stress free state method.The results indicate that by combining the construction of pile piers without abutments in deep water areas with the installation and splicing of steel truss beams using the stress free state method,a good overall stress bearing effect can be achieved.The method can solve the problem of pile foundation construction and overall stress control of super large bridges under deep water flow conditions,and provide technical reference and inspiration for similar projects.
unbounded extra large bridgedeep water areastress free state methodclosureforce system
万方数据
维普
