Combining with the construction difficulties of precision control,field processing,assembling forming,aloft work,which exist in integral lifting of super-high large-span steel truss beam of Yantai Broadcast and Television Center building,the choice of lifting equipment,assembling face and installation operation platform are analyzed,and four 6×19mm wire ropes are adopted as suspender cable.

In order to thoroughly understand the ultimate state and the effect of various factors on load capacity of the steel frame girder in fire, the finite element analysis of the ultimate load capacity of the I-section steel frame girder in fire subjected to different loads and restrictions, and thermal-structure coupling analysis of plane steel frame are performed.