开合屋盖结构体系在游泳馆建筑中的应用与关键问题分析

Analysis of application and key design issues for natatorium architecture with retractable roof structure

为总结此类开合屋盖结构设计分析要点以供相关工程设计参考,结合已建成或设计完成的游泳馆类开合屋盖项目,分析游泳馆类开合屋盖结构的特点与设计关键问题。与常规开合屋盖结构相比,游泳馆类开合屋盖在使用期限内开启频率高,场内外温差大,气密性和水密性要求更为严格。游泳馆类开合屋盖结构常采用沿泳池长边方向平行移动的方式开启,较为经济合理;活动屋盖部分的结构布置需要综合考虑建筑造型、固定屋盖结构形式以及驱动设备系统的适应性;当活动屋盖的运行轨道支承于固定屋盖钢结构上时,固定屋盖结构的竖向刚度对于开合屋盖的正常运行有非常大的影响,在保证开合屋盖结构具有合理刚度的同时还需要保证室内结构布置的简洁;游泳馆类开合屋盖结构优先选用轮式自驱动力系统,台车运行的同步精度要求较高时,可以选用齿轮齿条驱动系统。

In this paper,the application and key design issues of natatorium structure with retractable roof were analyzed based on the completed or designed natatorium structure with retractable roof.Compared with the conventional retractable roof structure,retractable roof structures used in natatorium have a higher use frequency,a larger temperature difference inside and outside the field,and more stringent requirements for air tightness and water tightness.The retractable roof structure used in natatoriums usually adopts the way of parallel movement along the long side of swimming pool,which is more economical and reasonable.The structural layout of the movable roof needs to consider the adaptability with the architecture shape,fixed roof structure layout and driving equipment system.When the rail of the movable roof is supported on the fixed roof structure,the overall rigidity of the fixed roof has a great influence on the regular operation of the retractable roof.The self-running wheel driving system is preferred for the retractable roof structure used in natatoriums.When the synchronous accuracy control of the trolley operation is high,the rack and pinion driving system can be used.