Analysis on Contact Stress of Spherical Joint in Continuous Beam Bridge Rotary Construction
With the rapid development of relevant computational theory and industrial technology,the rotary construction method plays an important role in bridge engineering construction.Considering that the spherical joint is in a complex stress state during the rotary construction process,it is particularly important to conduct necessary force analysis on it.Taking the continuous beam bridge of Baotou-Lanzhou Railway as an example,the stress performance of the spherical joint under the rotary construction state was analyzed.The simplified calculation method based on national standards and the non-Hertz contact theory method were used to theoretically calculate the stress of the spherical joint,and the finite element method was used to conduct numerical simulation analysis of the spherical joint under static action.Using the finite element analysis results as accurate values,the error analysis on the two theoretical calculation results was conducted.The results show that the finite element method can effectively simulate the actual force state of the rotary joint,and the theoretical calculation results have relatively large errors,but still have high accuracy in special cases.
continuous beam bridgerotary constructioncontact stresstheoretical calculationfinite element simulationaccuracy comparison
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