Collapse Mechanism and Full-Range Analysis of Overturning Failure of Continuous Girder Bridges

Table 3

Reactions at critical states calculated from the models with different transverse constraints (unit: kN).

Model	First bearing disengagement					Ultimate failure
		R		RT				R		RT
		S1	S3	S1	S3			S1	S3	S1	S3
The beam model	1074	1271	8815	−61	61	—	—	—	—	—	—
The original model	1218	1276	8950	−138	138	2722	2.23	1028	9950	−1470	1470
The reference model	1112	1303	8870	−38	38	1224	1.10	1353	8876	1.5	−1.5

Note: The positive vertical reactions (R) were in the upward direction; The positive transverse reactions (R_T) were in the direction from noneccentric loaded side to eccentric loaded side; — indicates the values were not listed because the reactions from the beam model had no sense as discussed above.