Quantitative Evaluation for Reinforcement Effect of Auxiliary Steel Beams Based on Running Safety and Dynamic Response

Table 4

Calculation results of lateral vibration stability of FTTB system before and after the auxiliary steel beams reinforcement.

V (km/h)	(cm/s^2)	(cm/s^2)	Before reinforcement				After reinforcement
			(cm/s^2)	(cm/s^2)		Whether stable	(cm/s^2)	(cm/s^2)		Whether stable
140	302	23	—	—	—	—	380	15	＜0	No
130	279	26	—	—	—	—	365	29	＞0	Yes
120	253	59	310	55	＜0	No	336	66	＞0	Yes
110	194	31	255	36	＞0	Yes	270	33	＞0	Yes
100	163	18	219	19	＞0	Yes	237	25	＞0	Yes
90	145	19	200	23	＞0	Yes	212	22	＞0	Yes
80	126	36.6	177	40	＞0	Yes	190	43	＞0	Yes
70	89.4	20.9	137	24	＞0	Yes	147	22	＞0	Yes
60	68.5	17.0	113	21	＞0	Yes	125	23	＞0	Yes
50	51.5	—	92	—	—	—	102	—	—	—