APPLICATION OF A NEW DOUBLE-ARCH-SUPPORT STRUCTURE IN A LONG-SPAN SPACE STRUCTURE

摘要

A new kind of structure system named double-archsupport structure is applied in the design of roof structure of a large stadium. The double-arch-support system is combined with the upper tube arch (large diameter) and lower space arch (triangle truss). Behaviors of double-arch-support system considering stiffness of concrete supports are studied in this paper. In order to simulate accurately the effect of concrete structure supporting stiffness on roof steel structure,the model is taken components of concrete structure into consideration. From the result of analysis,it is shown that frequency distributions of the structure supporting system are relatively dense and the double-arch-support roof system has a good performance on supporting vertical load for its deformation and high strength.