基于卵形拱桥塔的空间索网景观斜拉桥设计

本文针对斜拉桥景观性的设计要求，利用卵形曲线的数学方程，提出了一种卵形拱桥塔的空间索面景观斜拉桥。相比传统的抛物线拱形桥塔斜拉桥，其拱脚两腿收拢，减少了基础尺寸，顶部宽阔，分散布置三维空间缆索，斜拉桥的景观效果更佳。结合实际工程，进行工程参数设计，建立Midas有限元分析模型，进行静力分析和模态分析研究，分析表明：卵形拱桥塔的空间索面斜拉桥具有良好的空间结构刚度。

Design of Spatial-plane Landscape Cable-stayed Bridge Based on Egg-shaped Arch Pylon

In this paper, according to the landscape design requirements of cable-stayed bridge, a spatial cable net landscape cable-stayed bridge with egg-shaped arch tower is proposed by using the mathematical equation of egg-shaped curve. Compared with the cable-stayed bridge with traditional parabolic arch tower, its arch legs are closed, reducing the size of the foundation, the top is wide, and three-dimensional space cables are distributed, so the landscape effect of the cable-stayed bridge is better. Combined with the actual project, engineering parameters are designed, Midas finite element analysis model is established, and static analysis and modal analysis are carried out. The analysis shows that the spatial cable plane cable-stayed bridge with egg-shaped arch tower has good spatial structural stiffness.