Interlocking cast glass components, Exploring a demountable dry-assembly structural glass system
Interlocking cast glass components, Exploring a demountable dry-assembly structural glass system
复制标题
联锁铸造玻璃组件，探索可拆卸的干式装配结构玻璃系统
DOI：
--
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
R. Nijsse
中科院分区：
文献类型：
--
作者：
F. Oikonomopoulou;T. Bristogianni;L. Barou;E.A.M. Jacobs;Giulia Frigo;F. Veer;R. Nijsse
本文探索了一种新的、可逆的全玻璃系统的潜力，该系统由干燥组装、互锁铸造玻璃组件组成。由于其联锁的几何形状，所提出的系统可以在最少的金属框架(如果有的话)的帮助下获得所需的刚度。通过采用干燥、无色的中间层作为玻璃组件之间的中间介质，在系统中避免了粘合剂的使用。中间层可以通过变形表面粗糙度来容纳；此外，它允许均匀的应力分布，并允许最终拆卸和重复使用部件。为了验证这一概念，开发了各种部件几何形状和联锁机构。联锁形式是以1：2的比例窑铸而成，并在机械联锁能力、质量分布、残余应力产生和制造简易性方面进行了比较评估。同时，对干燥、透明夹层的不同材料进行了研究。从所开发的设计中，骨形块被选为最有前途的概念，并通过数值模拟进一步评估，以考察联锁几何形状对整体结构性能的影响。数值模型的结果表明，较低的砖更容易弯曲，而对于较高的砖，剪切锁定破坏更严重。为了进一步验证这一概念，对两个由骨形块和不同夹层组成的堆叠玻璃柱的试件进行了压缩测试，直到破坏。试件的破坏模式表明，与整体变体相比，所提出的系统具有更高的断裂韧性，防止裂缝从一块砖扩展到另一块砖，并具有固有的坚固性。实验还表明，建议在中间层增加剪切强度，以防止在压缩下撕裂，从而避免玻璃与玻璃的直接接触。
This paper explores the potential of a novel, reversible all-glass system consisting of dryassembly, interlocking cast glass components. Owing to its interlocking geometry, the proposed system can attain the desired stiffness with the aid of minimal, if any, metal framing. The use of adhesives is circumvented in the system by employing a dry, colourless interlayer as an intermediate medium between the glass components. The interlayer can accommodate by deformation surface asperities; furthermore, it allows for an even stress distribution and for the eventual disassembly and reuse of the components. To validate the concept, various component geometries and interlocking mechanisms are developed. The interlocking forms are kiln cast in 1 : 2 scale and are comparatively assessed in terms of mechanical interlocking capacity, mass distribution, residual stress generation and ease of fabrication. In parallel, research is conducted on different materials for the dry, transparent interlayer. From the developed designs, osteomorphic blocks are selected as the most promising concept and are further assessed by numerical modelling to investigate the influence of the interlocking geometry to the overall structural performance. The results of the numerical model indicate that lower bricks are more susceptible to bending, whereas for higher brick variants the shear lock failure is more critical. To further validate the concept, two specimens of stacked glass columns comprising osteomorphic blocks and different interlayers are tested in compression until failure. The failure mode of the specimens suggests an increased fracture toughness of the proposed system compared to a monolithic variant, preventing cracks propagating from one brick to another and an inherent robustness The experiments also suggest that an interlayer of increased shear strength is recommended to prevent tearing under compression and thus avoiding direct glass-to-glass contact.