Reaction Spectrum Comparative Analysis of Seismic Performance of 62 m CFST Bridge with Curved-String Truss before and after Reinforcement

Table 6

The peak values of the internal force of the bridge.

Working conditions	Typical section	Axial force (kN)	Transverse shear (kN)	Vertical shear (kN)	In-plane bending moment (kN·m)	Out-of-plane bending moment (kN·m)
1	Fixed end	4977.01	20.31	398.83	778.69	300.28
	1/4L	4329.28	26.18	109.92	433.59	82.61
	1/2L	4037.94	7.77	216.20	406.37	31.00
	3/4L	4331.43	25.85	76.89	398.83	86.92
	Active side	4912.23	20.96	370.48	589.34	303.32
2	Fixed end	4905.89	47.11	378.36	727.27	924.61
	1/4L	4241.07	83.52	113.45	443.74	264.87
	1/2L	3938.51	20.32	223.20	406.23	84.68
	3/4L	4278.33	82.39	77.81	397.34	275.99
	Active side	4882.07	46.91	359.78	587.90	923.19
3	Fixed end	4960.34	20.75	412.73	761.11	301.82
	1/4L	4356.17	25.55	120.27	467.74	81.28
	1/2L	4070.56	7.60	210.64	399.45	30.90
	3/4L	4393.67	25.28	76.97	416.18	84.45
	Active side	4951.64	20.59	385.77	628.42	301.00