一种新型双拱支承体系在大跨度空间结构中的应用

Application of a new double-arch-support structure in a long-span space structure

一种新型的双拱支承体系被运用于某大型体育场的设计中,这种双拱体系由一个上单管拱和下空间桁架拱组成.其中上拱为大直径钢管拱,下空间拱为三角形桁架拱,二者分别承担不同的结构作用.本文针对这种新型的双拱支承体系进行了详细的静力和动力分析,并在分析模型中考虑了下部钢筋混凝土结构的支承刚度对整体结构的影响.分析结果表明,这种新型结构体系的整体受力性能良好,可以满足结构强度、变形和稳定性的要求.

A new kind of structural system named double-arch-support structure is applied in the design of roof structure for a large stadium. The double arch-support system is combined wiih the uppper tube arch and lower triangle truss arch. Behaviors of double-arch-support system considering sliffncss of concrete supports are studied in this paper. From the result of analysis, it is shown that the double-arch-support roof system has a good performance on supporting vertical load for its high strength and stability.