Analysis on Optimization Measure for Concrete Spherical Hinge in the Swivel Construction of Large-span Bridge
Based on the theoretical analysis and practical cases,the optimization measures of concrete spherical hinge in the swivel construction of large-span bridges are analyzed in depth.Combined with the analysis of case data,it can be seen that there are some errors between three methods and the actual measurement results.The error of the formula technique method is the largest,about 95%;the error of finite element analysis results is the smallest,with a minimum error value of 0.1%;the contact stress values of non-Hertz algorithm and finite element analysis are close to the actual measured values;the contact stress at different positions varies with the angle of the rotating body,and does not show obvious regularity;when the rotating body rotates 45°,90° and 135°,the contact stress increases to some extent compared with that before rotation,but it is still less than the design stress requirement,and there is still a part of the stress is less than the stress before rotation.
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