Dynamic Behavior of Externally Prestressed Continuous Beam considering Second-Order Effect

Table 4

The 1^st∼4^th natural frequency calculation results of externally prestressed continuous beam.

Beam code	M① (rad/s)				M② (rad/s)				M③ (rad/s)
	ω1	ω2	ω3	ω4	ω1	ω2	ω3	ω4	ω1	ω2	ω3	ω4
AS1	26.65	44.31	106.54	134.88	25.58	40.87	105.67	134.18	26.64	44.26	106.5	134.8
AS2	26.61	46.77	106.31	134.64	24.37	40	104.51	133.93	26.6	46.6	106.28	134.57
AL1	26.66	51.07	106.6	134.95	25.89	41.11	105.97	134.44	26.67	50.92	106.56	134.88
AL2	26.63	58.97	106.43	134.8	24.78	40.29	104.9	133.52	26.64	58.49	106.4	134.74
BS1	26.63	44.28	106.55	134.87	25.58	40.87	105.66	134.18	26.64	44.22	106.51	134.79
BS2	26.58	46.7	106.34	134.62	24.37	40	104.51	133.19	26.57	46.55	106.32	134.55
BL1	26.62	50.71	106.58	134.88	25.89	41.1	105.96	134.44	26.61	50.56	106.55	134.8
BL2	26.56	58.34	106.4	134.65	24.77	40.29	104.89	133.52	26.57	58.19	106.37	134.57

Note: M①, M②, and M③ represent the methods of this paper, Shi et al. [19], and FEM.