国家速滑馆动态高精度施工测量关键技术及应用

国家速滑馆建筑结构在空间上的不规则性、多样性、复杂性及超大规模给施工测量带来较大的难度，因此，加强对动态高精度测量技术的研究和应用，是实现施工过程各专业、各环节高精度搭接的重要基础。国家速滑馆动态高精度施工测量关键技术解决了不均匀作用力下大跨度马鞍形索网同步张拉困难的技术难题；突破了特大异形柔性结构屋顶预制、安装和调控精密测量关键技术，实现了精密工程测量从静态到动态、离散到连续的转变；形成了模型驱动的一测多用高密度网状排管表观形态高效测量新方法；解决了受阻或封闭环境长距离连续面超高精度地坪标高测量难题，有效指导了施工作业，为2022年冬奥会速滑项目的开展提供了保障。

Key technology of dynamic high-precision construction measurement in National Speed Skating Oval and its application

The irregularity, diversity, complexity and large scale of the building structure of the National Speed Skating Oval bring great difficulty to the construction measurement. The research and application of dynamic high-precision measurement technology is an important foundation to realize the high-precision lap of various professions and links in the construction process. The key technology of dynamic and high-precision construction measurement in National Speed Skating Oval has solved the technical problem of the difficulty of synchronous tensioning of large-span saddle-shaped cable net under the non-uniform force. It makes a breakthrough in the key technology of precast, installation and control precision measurement of extra-large special-shaped flexible structure roof, and realizes the transformation of precision engineering measurement from “static to dynamic” and “discrete to continuous”. A new model driven method for measuring the apparent morphology of a multi-purpose high-density netted tube is developed. It solves the problem of long distance continuous floor elevation measurement with ultra-high precision in blocked or closed environment. It effectively guides the construction operation and provided a guarantee for the development of the 2022 Winter Olympic Games speed skating project.