The design of the foundation of portal frame structure under special foundation condition;

This paper discusses modeling method of finite element about large span portal frame structure in a certain workshop,and performs the non-linear static analysis of this structure by using ANSYS.

In China, with the fast economic development rising, portal frame structures with profiled steel sheets as maintenance system and H type steel members as main frame demostrates great market interests in the field of industrial and civil constructions.

The application of gabled frame is very widely in China.

Issues mentioned above restrict the application of gabled frame structures in high-seismic fortification intensity district in our country.

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.

In the light of that the portal strut light building structure,which has developed rapidly,possesses many quality problems,from the angles of the design and the construction,this paper probes into problems needing attention in the application of the portal strut light building structure,and puts forward some measures for solving these problems.

The author introduces the monolayer light portal frame structure and its characteristic,discusses the design of the portal frame light structure from the structure form,the structural arrangement,the frame design and the component design of the accessory structure,puts forward the principles followed in the design of the light portal frame structure to perfect the design of the structure.