According to the demand of 800m super long-span pedestrian suspension bridge in Mountain Scenic Spot, a hillside-anchored univalent hyperboloid spatial suspension network pedestrian suspension bridge is proposed. The univalent hyperboloid tube-network space cables are dispersed and anchored on the both sides of the hillside, and the bridge tower structure is cancelled to save the cost; The univalent hyperboloid tube-network space cable system provides horizontal component, greatly improves the lateral stiffness and torsional stiffness of pedestrian suspension bridge, and has good space structure stiffness. Combined with a 800m super long-span pedestrian suspension bridge project in Mountain Scenic Spot, the static and dynamic stress characteristics of MIDAS finite element are carried out to verify the rationality of the pedestrian suspension bridge with hillside-anchored spatial cable system and its good wind stability.

Based on the 5000 m super span Qiongzhou Strait suspension bridge with as the engineering background. On the basis of the parallel steel cable suspension bridge, the hyperbolic paraboloid carbon fiber cable net is added to form a new structural system of super long span hyperbolic paraboloid spatial mixed cable suspension bridge. The parallel steel cables bear vertical loads, and the hyperbolic paraboloid carbon fiber spatial cables improve the spatial stiffness of the super long span Strait suspension bridge, and the two groups of cables are mixed to work together.The model of MIDAS finite element analysis is established to analyze the internal force and dynamic modal characteristics of the structure.The results show that: the ratio of torsional frequency to bending frequency and torsional frequency of hyperbolic paraboloid spatial mixed cable suspension bridge are significantly improved, and it has good wind resistance stability. The flutter critical wind speed of parallel steel wire cable suspension bridge is 23.35 m/s, and that of hyperbolic paraboloid spatial mixed cable suspension bridge is 78.34 m/s. In order to resist the super strong typhoon once in a hundred years in Qiongzhou Strait, the technical measures of setting temporary additional anti wind cables are put forward based on the principle of ship anchor cables. The flutter critical wind speed can reach 104.6 m/s. Therefore, the wind stability problem of the 5000 m Qiongzhou Strait super long span suspension bridge is fundamentally solved.