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由于对自动化开合的要求,移动式开合屋盖通常需要引入机械系统、运行控制系统,使得整个结构成为一个较为复杂的耦合系统。以贵阳西南国际商贸城一期工程天窗开合屋盖为研究对象,建立该开合屋盖结构1∶10缩尺的物理模型,通过开展不同条件下的物理模型试验来研究该屋盖结构在运行状态下的变形及振动特性。试验结果表明:随着外部荷载的不断增加,结构变形也在不断地增大;但是屋盖结构的变形量值较小,基本处于线弹性范围之内,试验变形与弹性理论计算结果较为吻合。同时屋盖结构的振动加速度随着荷载的增大而增大,并且在屋盖启动、刹车或转向时,结构振动加速度有明显的突变效应。
Due to the requirement of automatic opening and closing, the movable open-close roof usually needs to be introduced into the mechanical system and run the control system so that the whole structure becomes a more complicated coupling system. Taking the sunroof roof of Guiyang Southwest International Trade City Phase I project as the research object, a 1:10 scale physical model of the opening and closing roof structure was established, and the physical model test under different conditions was conducted to study the roof structure Deformation and vibration characteristics under operating conditions. The experimental results show that with the increase of external load, the deformation of the structure is also increasing. However, the deformation of the roof structure is small and is basically within the range of linear elasticity. The experimental deformation is in good agreement with the theoretical calculation of elasticity. At the same time, the vibration acceleration of the roof structure increases with the increase of load, and the structure vibration acceleration has obvious abrupt effect when the roof is started, braked or turned.