某空间螺旋塔斜拉桥合理结构体系研究

某斜拉桥方案采用反对称螺旋形桥塔，空间四索面，造型较为新颖。由于桥梁结构较为复杂，为选用适宜的结构体系，基于桥梁结构的受力形态，在综合比较了漂浮体系、半漂浮体系、半固结体系的优劣后，确定半漂浮体系为最佳方案，并进一步讨论了地震作用下该桥合理的约束体系。这一流程对解决类似复杂结构桥梁合理结构体系的问题有一定参考价值。

Research on Reasonable Structure System of Cable-stayed Bridge with Spatial Spiral Pylon

The anti-symmetric spiral pylon is used in a cable-stayed bridge scheme with the spatial, four-plane and relatively new shape. Due to the complex bridge structure, in order to select the suitable structural system, based on the stress form of bridge structure, after the comprehensive comparison of the advantages and disadvantages of floating system, semi-floating system and semi-consolidating system, the semi-floating system is determined as the preferred scheme. The reasonable constraint system of this bridge is further discussed under the earthquake action. The procedure has a certain referring value for solving the problems of reasonable structural system of similar complex structural bridges.