KEY TECHNICAL PROBLEMS AND DISCUSSION IN CONSTRUCTION PROCESS OF LARGE SPAN STEEL STRUCTURES

It is classified and discussed th at some key technical problems met in the construction process of large span ste el structures.These problems are as follows:(1)stability checking of the structur e and component members during the lifting process;(2)pulley-structure analysis under applied loads;(3)temporary supports influence on the structural safety;(4)sa fety problem due to the removal of the temporary supports;(5)tracing analytical c omputation and method for the pre-stress steel structure during the constructio n process;(6)continuous tracing computational approach in structural erection pro cess;(7)computation and forming of flexible structures;8)design and computation o f integral hoisting of the large span structures.