国家速滑馆防雷技术研究

Research on lightning protection technology of National Speed Skating Oval

国家速滑馆为二类防雷建筑。利用提前放电避雷针和金属屋面做接闪装置,通过索网.环桁架和龙型金属龙骨作为引下线,基础桩作为接地装置。由于建筑结构独特,为国内首个全冰面比赛场馆,防雷保护体系极其重要。屋面单元板块加索网结构是国内首次应用的接闪结构形式,工程政治意义重大,防雷系统深化技术复杂、难度大。

The National Speed Skating Oval(NSSO)is class Ⅱ lightning protection building.The electricity is discharged by using the lightning rod and metal roof as the lightning catching device,and the cable net,ring truss,dragon-shaped steel structure are as the down-lead,the foundation piles are as the grounding device.The lightning protection system is extremely important in this unique structure of the building as well as the first all-ice competition venue in China.Roof unit plate and cable net structure are the first application of lightning connection structure in China.Its deepening technology of lightning protection system is complicated and difficult.The project has the great political significance.