Study on the calculation method of plum blossom-shaped steel roof pre-set deformation value in construction

摘要

A steel roof structure is plum blossom-shaped and its flower core is a cable dome and five petals is a mixture structure with truss and grid. Its trusses are installed by cantilever construction. This paper analyzes the method to get pre-set deformation value (P.D.V) and makes use of software ANSYS to calculate the trusses P.D.V through backward iteration method to insure construction complete.