Research Article

Experimental Study on Fatigue Performance of Negative Bending Moment of Steel-Concrete Continuous Composite Box Girder

Table 1

Parameters of composite beam specimens.

Specimen no.Section formLayout of upper flange welding nailsNumber of upper flange welding nailsReinforcement ratio of concrete slab (%)Measured compressive strength of concrete (MPa)Loading method

PLG-1Double-layer concreteContinuous arrangement1761.7659.05Repeated loading

PLG-2Double-layer concreteContinuous arrangement1760.8860.18Repeated loading