| Popis: |
Construction of denitrification system is an important environmental engineering in power industry now. Denitrification system is always set over the blower bracket, frame for denitrification needs to pass through existing structure if blower bracket works together with boiler frame. Based on the denitrification project of a power plant in north China, this paper puts forward reasonable structural arrangement of steel frame through existing structure, which is that frame for denitrification works alone and the column affected by existing structure selects solid-web column with openings. The beam supporting SCR reactor could be simplified as a beam under dead load only. Optimal design of its section in simplified model can improve design efficiency and economize the cost. The critical load of special column with bracings can be obtained by the linear elastic buckling analysis and effective-length factor can be calculated according to Euler Formula. |
