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

Table 2

Vertical reactions in the first two steps from two beam models and the solid model (unit: kN).

Model	Step 1				Step 2
	S1	S2	S3	Sum	S1	S2	S3	Sum
The beam model (using the unified stiffness)	577	577	8437	9591	768	768	8055	9591
The beam model (using the actual stiffness)	571	571	8449	9591	762	762	8067	9591
The solid model	571	583	8464	9618	760	780	8078	9618

Note: the positive vertical reactions were in the upward direction.