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Kinematics of the retractable roofing module constructed from three roof panels
Journal of Building Engineering ( IF 6.7 ) Pub Date : 2021-01-13 , DOI: 10.1016/j.jobe.2021.102169
Anita Pawlak-Jakubowska , Krystyna Romaniak

Retractable roof modules in existing constructions consist of one or two roof panels driven by one drive unit. Usually, the Class II mechanisms used are in the form of a four-bar linkage, whose task is to absorb sudden surges in wind. The pre-set objective sought new solutions that would allow the implementation of roof modules with an increased number of panels, for example, three or more. The movement of the mechanisms is strictly defined; therefore, the focus was on their use as a movable skeleton for roof panels. The research problems involved the realisation in terms of geometry, kinematics, and production technology that would ensure efficient opening and closing of the roof module. The main research methods used were simulation and modelling. A structural analysis was carried out for the research models based on parametric modelling, which allowed for their multiple modifications. Virtual modules were subjected to real-time kinematic analysis. One case was selected for which the lengths of the roof panels, their angular acceleration, and velocities were determined. The design concept for roofing based on European design standards and solutions used in the structures of single-girder top-mounted cranes was presented. Received a roof module consist of two articulated four-bar linkages and it provides 95% of open space. One bogie drive sets three roof panels in motion; two of them have the same length, and the panel connected to the drive is 20% longer. The coverage span of the roof is 2.94 times that of the panel length. The roof module was compared with the existing Wimbledon Centre Court (UK) structure, in which the module consists of two roof panels of equal length. The coverage span under the module is 1.97 of the panel length. The obtained in research solution provides twice the coverage span, which is 3.94 of the panel length.

Research has shown that it is possible to obtain retractable roofs that cover larger spaces by using, for example, a smaller number of driving mechanisms or lattice girders. Consequently, this can lead to lighter constructions and is thus more economical. The structure can be used more widely as a movable wall, protecting against heating the interior of the building or as a frame for a photovoltaic panels that follows the movement of the sun.



中文翻译:

由三个车顶板构成的可伸缩车顶模块的运动学

现有结构中的可伸缩车顶模块由一个驱动单元驱动的一两个车顶面板组成。通常,使用的II类机制是四连杆机构的形式,其任务是吸收突然的风浪。预设目标寻求新的解决方案,该解决方案将允许实施带有增加数量的面板(例如三个或更多)的车顶模块。机制的运动是严格定义的;因此,重点是将它们用作屋顶面板的活动骨架。研究问题涉及在几何形状,运动学和生产技术方面的实现,以确保有效打开和关闭车顶模块。使用的主要研究方法是仿真和建模。基于参数化建模对研究模型进行了结构分析,允许对其进行多种修改。虚拟模块进行了实时运动学分析。选择了一种情况,确定了屋顶的长度,角加速度和速度。提出了基于欧洲设计标准的屋顶设计理念和用于单梁顶置式起重机结构的解决方案。接收的车顶模块由两个铰接的四杆连杆组成,可提供95%的开放空间。一个转向架驱动器使三个顶板运动。其中两个具有相同的长度,并且连接到驱动器的面板长20%。屋顶的覆盖范围是面板长度的2.94倍。将屋顶模块与现有的温布尔登中心法院(英国)结构进行了比较,在该结构中,该模块由两个等长的屋顶板组成。模块下的覆盖范围是面板长度的1.97。研究解决方案中获得的结果提供了两倍的覆盖范围,即面板长度的3.94。

研究表明,可以通过使用例如较少数量的驱动机构或桁架梁来获得覆盖较大空间的可伸缩屋顶。因此,这可以导致结构更轻,因此更经济。该结构可以更广泛地用作活动墙,防止建筑物内部受热,也可以用作跟随太阳运动的光伏面板的框架。

更新日期:2021-01-25
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