白浪河大桥摩天轮稳定索关键施工技术与张拉过程模拟分析

Key Construction Technology and Simulation Analysis for Stable Cable of Bailanghe Bridge Giant Wheel

潍坊市白浪河大桥摩天轮采用创新的固定立体环状结构形式,是目前世界上直径最大的无轴式摩天轮结构。该工程采用体外预应力技术进行辅助支撑,基于工程实践,主要介绍稳定索的关键施工技术及张拉施工过程仿真分析。结果表明:拉索的施工工艺对主体结构受力与变形影响较小,张拉层级较少,操作简便,提高了张拉效率,具有良好的经济效益和社会效益。

The novel vertical ring-shaped structure was adopted in Bailanghe Bridge Giant Wheel, which diameter is currently the largest among the non-spoke-type Ferris Wheels in the world. Based on engineering practice, key construction technologies and construction process simulation analysis was introduced for the cable, which adopts the external pretension method to offer minor support. Results show that the stress and deformation could be guaranteed in construction process of cable, times of pretension operation is simplified effectively, which means easy and convenient operation as well as lower cost, with good social and economic benefits.