Abstract
This paper firstly presents the field tests of a straight and a curved composite continuous box girder bridges. Elaborate FE model and beam FE model are then built on the basis of achievements of the companion paper. According to the comparison of results among elaborate FE model, beam FE model and field test, testing coefficient of mid-span deflection is 0.5∼0.8, and that of stress is 0.6~0.9 for the elaborate FE model. Also good correlation of the calculation results between elaborate FE model and beam FE model can be observed with the relative errors within the range of ±10%. This and the companion paper propose the beam-truss model of composite box-girder bridges, then accuracy and adaptability are fully verified by amounts of numerical analysis. Conclusions drawn in these papers are helpful for design analysis of steel-concrete composite box-girder bridge.
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