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

Table 3

Test load.

Specimen		PLG-1	PLG-2 (0–1 × 10^6 cycles)	PLG-2 (1 × 10^6–1.5 × 10^6 cycles)	PLG-2 (after 1.5 × 10^6 cycles)
Load (kN)	Upper limit	490	190	300	380
	Lower limit	225	90	90	130
	Amplitude	265	100	210	250