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

Table 5

Stress increment at beam span 56 after loading.

Cases	Measuring point location		Stress increment value measured (MPa)				Stress increment value calculated (MPa)	Verification coefficient
			Cycle 1	Cycle 2	Cycle 3	Mean
Maximum stress in diagonal of the bridge gantry	Diagonal of the left bridge gantry	1#	-27.88	-27.74	-28.45	-31.83	-37.60	0.85
		2#	-30.44	-30.57	-30.68
		3#	-37.71	-35.22	-35.98
		4#	-32.54	-31.94	-32.78
	Diagonal of the right bridge gantry	5#	-38.65	-38.89	-38.65	-33.44	-37.60	0.89
		6#	-27.35	-28.12	-27.99
		7#	-27.94	-28.34	-28.74
		8#	-38.94	-38.80	-38.82
Maximum bending moment of span 56 midspan	Left top chord	9#	-33.62	-32.42	-33.23	-33.26	-39.17	0.85
		10#	-36.20	-34.88	-36.43
		11#	-32.77	-32.30	-32.66
		12#	-36.57	-37.12	-36.30
		13#	-28.49	-27.96	-27.97
	Left bottom chord	14#	27.79	28.47	27.67	33.96	38.95	0.87
		15#	35.38	35.53	35.26
		16#	37.95	37.81	37.09
		17#	28.53	28.93	28.80
		18#	39.60	40.50	40.01
	Right bottom chord	19#	27.30	27.68	27.43	32.98	38.95	0.85
		20#	36.38	36.53	36.26
		21#	29.53	29.93	29.80
		22#	33.36	33.50	33.37
		23#	37.59	37.99	38.00
	Left hip vertical	24#	17.96	18.35	17.23	28.56	32.12	0.89
		25#	19.01	19.01	18.87
		26#	41.93	41.21	40.93
		27#	39.13	38.76	38.86
		28#	26.06	25.65	25.51
	Right hip vertical	29#	38.57	39.34	39.36	29.67	32.12	0.92
		30#	34.71	35.37	34.99
		31#	16.74	17.13	17.39
		32#	17.34	17.09	16.59
		33#	40.10	40.09	40.22
Maximum diagonal stress of span 56	Left diagonal	34#	44.74	44.99	44.99	50.12	55.78	0.90
		35#	48.62	48.33	48.53
		36#	55.94	56.13	56.24
		37#	52.16	52.62	52.50
		38#	48.74	48.61	48.73
	Right diagonal	39#	57.52	56.95	56.80	50.65	55.78	0.91
		40#	53.11	52.57	52.56
		41#	46.52	46.51	46.40
		42#	47.96	47.42	47.52
		43#	49.32	49.33	49.20
Maximum negative bending moment at pier 56 top	Left top chord	44#	40.40	39.99	40.20	38.05	46.00	0.83
		45#	42.39	43.24	41.37
		46#	38.20	35.33	36.18
		47#	36.85	35.69	34.93
		48#	34.66	36.21	35.15
Maximum stress of side stringer	Left stringer	49#	-50.19	-51.07	-50.81	-49.14	-62.90	0.78
		50#	-47.00	-47.72	-48.07
		51#	49.60	48.49	49.16	49.74	62.90	0.79
		52#	50.53	50.13	50.51
	Right stringer	53#	-46.17	-46.99	-46.60	-43.71	-62.90	0.69
		54#	-39.19	-42.71	-40.64
		55#	50.30	49.36	50.15	49.52	62.90	0.79
		56#	49.26	48.74	49.28
Maximum bending moment of span 56 midspan	Side floor beam	57#	-42.23	-42.57	-42.54	-44.30	-48.52	0.91
		58#	-46.32	-46.19	-45.92
		59#	46.25	46.14	46.89	44.91	48.52	0.93
		60#	43.88	43.01	43.27