Experimental Analysis of Static and Dynamic Performance for Continuous Warren Truss Steel Railway Bridge in Heavy Haul Railway

Table 6

Stress increment after loading of the 57th span beam.

Cases	Measuring point location		Stress increment value measured (MPa)				Stress increment value calculated (MPa)	Verification coefficient
			Cycle 1	Cycle 2	Cycle 3	Mean
Maximum bending moment of span 57 midspan	Left top chord	61#	-31.01	-31.12	-31.73	-33.99	-38.07	0.89
		62#	-35.44	-34.45	-34.16
		63#	-36.07	-36.05	-36.01
		64#	-33.63	-34.10	-34.19
		65#	-33.87	-33.73	-34.23
	Left bottom chord	66#	35.41	35.93	35.80	30.35	34.78	0.87
		67#	32.12	32.25	32.81
		68#	28.88	29.12	29.51
		69#	28.28	28.02	28.15
		70#	26.55	26.14	26.28
	Right bottom chord	71#	34.41	34.93	34.80	29.28	34.78	0.84
		72#	31.12	31.25	31.81
		73#	25.92	25.92	25.92
		74#	27.92	27.54	27.42
		75#	27.23	26.18	26.89
	Left hip vertical	76#	14.36	15.14	15.02	20.34	26.20	0.78
		77#	13.73	13.86	14.13
		78#	31.50	31.93	32.08
		79#	25.46	26.66	26.79
		80#	14.89	14.89	15.13
	Right hip vertical	81#	26.56	28.73	27.95	20.30	26.20	0.77
		82#	27.47	28.18	28.54
		83#	14.05	13.67	14.18
		84#	12.60	12.85	13.47
		85#	18.41	18.66	19.17
Maximum diagonal stress of span 57	Left diagonal	86#	54.07	54.21	54.24	59.84	65.07	0.92
		87#	57.96	57.82	57.84
		88#	67.24	66.98	66.98
		89#	65.35	65.35	65.25
		90#	61.86	61.86	61.58
	Right diagonal	91#	63.21	62.97	62.99	58.44	65.07	0.90
		92#	65.37	65.28	65.03
		93#	53.12	53.00	52.86
		94#	54.76	54.79	54.95
		95#	56.31	55.89	56.01
Maximum negative bending moment at pier 57 top	Left top chord	96#	47.01	46.45	46.29	45.44	56.17	0.81
		97#	52.58	52.97	53.12
		98#	43.89	43.99	44.12
		99#	43.44	43.70	43.56
		100#	40.42	40.15	39.87