Distortional Buckling Analysis of Steel-Concrete Composite Girders in Negative Moment Area

Table 6

Critical distortional buckling moment of composite box girder under negative moment.

Example number	Distortional buckling critical moment /kN·m
	Uniform negative bending moment		Triangle negative bending moment		Uniform load
	ANSYS		ANSYS		ANSYS
1	726.05	722.14	792.36	817.41	792.82	786.74
2	727.14	722.14	764.67	780.46	761.22	755.31
3	727.97	722.14	754.92	766.16	751.46	742.62
4	905.93	907.22	978.11	1012.5	975.47	974.36
5	908.24	906.50	948.67	971.43	943.90	939.16
6	909.57	906.10	938.64	956.00	934.34	927.85
7	537.51	535.75	586.54	603.16	582.84	580.39
8	538.52	534.07	566.22	576.36	559.78	556.42
9	539.17	534.11	559.06	566.01	552.67	548.75
10	742.21	736.10	810.13	833.22	808.61	801.95
11	743.33	736.10	781.78	795.55	776.85	767.88
12	744.17	736.10	771.81	780.97	767.02	756.98
13	1253.6	1247.9	1367.6	1412.5	1365.9	1359.5
14	1255.6	1247.9	1320.1	1348.6	1311.4	1301.7
15	1260.7	1247.9	1303.5	1323.9	1294.7	1283.3