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

Table 7

Stress increment after loading of the 58th span beam.

Case	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 58 midspan	Left top chord	101#	-37.41	-37.41	-37.64	-32.70	-34.81	0.94
		102#	-26.57	-26.43	-26.04
		103#	-26.07	-26.18	-25.66
		104#	-42.55	-42.01	-41.86
		105#	-31.63	-31.49	-31.50
	Left bottom chord	106#	30.51	30.40	30.14	28.21	28.22	0.98
		107#	25.50	25.91	25.65
		108#	30.08	30.37	30.25
		109#	24.55	24.41	24.27
		110#	30.40	30.56	30.19
	Right bottom chord	111#	26.51	26.40	26.14	27.09	28.22	0.94
		112#	25.50	25.91	25.65
		113#	25.08	25.37	25.25
		114#	24.45	24.99	24.58
		115#	33.62	33.53	33.29
	Left hip vertical	116#	12.63	13.27	13.15	18.31	24.52	0.75
		117#	12.28	12.41	12.78
		118#	26.74	27.15	27.02
		119#	24.50	24.65	24.52
		120#	14.65	14.39	14.53
	Right hip vertical	121#	23.23	23.76	23.64	19.29	24.52	0.79
		122#	25.43	26.01	25.73
		123#	13.43	12.60	13.86
		124#	12.96	13.74	13.75
		125#	20.42	20.69	20.16
Maximum diagonal stress of span 58	Left diagonal	126#	41.40	41.68	41.85	51.40	64.43	0.80
		127#	55.59	55.96	55.75
		128#	48.70	49.34	49.51
		129#	56.27	56.40	56.46
		130#	54.17	53.90	54.04
	Right diagonal	131#	61.68	61.56	61.60	57.54	64.43	0.89
		132#	63.00	63.16	63.05
		133#	56.42	56.56	56.46
		134#	54.32	54.61	54.51
		135#	52.22	51.95	51.95
Maximum negative bending moment at pier 57 top	Left top chord	136#	45.93	46.57	45.89	44.14	54.74	0.81
		137#	43.25	43.24	43.52
		138#	41.30	41.57	41.99
		139#	41.98	42.35	42.75
		140#	46.93	47.36	47.52