Calculation of Reasonable Cable Buckle Force during Construction Stage of CFST Arch Bridge Based on Modified Influence Matrix Method
In order to calculate the buckle cable forces during the installation stage of the arch ribs of a CFST arch bridge,a top-bearing concrete-filled steel tube arch bridge was used as the basis and the modified influence matrix method was used to analyze the buckle cable forces during the construction stage of the bridge.The results show that:1)During the calculation of the cable force of the uncorrected influence matrix method,it is easy to occur that the accumulated displacement of the tangent assembly can only be adjusted by the last segment,which causes the last cable to be prone to mutation and the cable force value to increase sharply;2)The modified influence matrix method not only meets the accuracy requirements,but also has a fast iteration rate and higher accuracy,which significantly improves the cable force calculation efficiency.This result can provide reference for cable force calculation during construction of CFST arch bridge.
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维普
