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

Table 4

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	7107.28	26.26	201.04	245.23	179.34
	1/4L	6230.75	23.13	40.63	174.04	69.03
	1/2L	5762.37	14.84	56.11	172.72	56.27
	3/4L	6156.28	22.56	39.26	101.58	70.89
	Active side	6999.42	26.46	189.54	177.13	177.22
2	Fixed end	7040.11	33.53	191.18	202.00	391.85
	1/4L	6142.36	63.16	38.98	144.75	191.30
	1/2L	5711.40	26.16	52.55	168.48	57.83
	3/4L	6120.52	62.12	38.63	94.61	199.75
	Active side	7000.37	33.66	185.68	177.34	391.51
3	Fixed end	7101.63	26.96	192.03	206.22	181.07
	1/4L	6255.10	23.28	39.90	148.91	68.53
	1/2L	5835.26	15.86	53.91	175.35	60.52
	3/4L	6232.60	22.85	39.49	97.73	70.53
	Active side	7067.71	27.08	187.15	181.86	180.56