This paper gives a complete introduction on the design method of Chinese П type frame structure and its application taking the construction engineering of Paifang Coal Mine as a.

The critical conditions on eliminating fire protection cover for steel portal frames;

Research on sloped beam of steel portal frame about temperature distributing under local fire

Using the finite element analysis software ANSYS,the critical temperatures of steel portal frames in fire affected with varied factors are investigated.

To apply this novel method to design of steel portal frames, the integrated nonlinear analysis, the assessment of frame systems and the practical design formats of steel portal frames with tapered members were studied.

Employing a non linear finite element analysis program, which is designed especially for the calculation of the limit temperature of the steel portal frames with the tapered members against fire, authors carries out research on the influence of a number of parameters on the limit temperature of steel portal frames subjected to fires.