Structural Modelling, Construction and Test of The First 3D-printed Gridshell in Ice Composite

IF 1.1 Q3 ENGINEERING, CIVIL

Journal of the International Association for Shell and Spatial Structures Pub Date : 2020-04-15 DOI:10.20898/j.iass.2020.001

A. Pronk, E. Mergny, Qingpeng Li

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引用次数: 3

Abstract

In the past, record breaking large shell structures with ice composites were successfully realized by spraying cellulose-water mixture on an inflatable mould. This paper presents the application of a new, production technique for ice composites by extrusion instead of spraying. With this additive manufacturing technique, the world's first gridshell in fibre-reinforced ice was designed, constructed, and tested. To increase the stiffness of the gridshell the floorplan of the inflatable mould was designed with an anti-clastic curvature at the supports of the structure. Concerning the pattern of the grid different options were developed and compared and verified in ABAQUS®. The size of the struts were determined by an iterative process. The gridshell was realized in a cold environment by printing multiple layers of cellulose-water mixture on the inflatable mould using piping bags. After the substance has been extruded, the mixture froze at temperatures of minus eight degrees Celsius or lower. The realized structure was tested on-site with a dead load to prove its strength.

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冰复合材料中第一个3D打印网格壳的结构建模、施工和测试

过去，通过在充气模具上喷涂纤维素-水混合物，成功实现了冰复合材料破纪录的大壳结构。本文介绍了一种新的冰复合材料生产技术的应用，即用挤压代替喷射。利用这种增材制造技术，设计、制造和测试了世界上第一个纤维增强冰格栅壳。为了增加格栅壳体的刚度，充气模具的平面布置图在结构的支撑处设计了抗碎屑曲率。关于网格模式，在ABAQUS®中开发、比较和验证了不同的选项。支柱的尺寸通过迭代过程确定。网格壳是在寒冷的环境中通过使用管道袋在充气模具上打印多层纤维素-水混合物来实现的。物质被挤出后，混合物在零下八摄氏度或更低的温度下冻结。对实现的结构进行了现场恒载测试，以证明其强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the International Association for Shell and Spatial Structures ENGINEERING, CIVIL-

CiteScore

1.40

自引率

0.00%

发文量

期刊介绍： The Association publishes an international journal, the Journal of the IASS, four times yearly, in print (ISSN 1028-365X) and on-line (ISSN 1996-9015). The months of publication are March, June, September and December. Occasional extra electronic-only issues are included in the on-line version. From this page you can access one or more issues -- a sample issue if you are not logged into the members-only portion of the site, or the current issue and several back issues if you are logged in as a member. For any issue that you can view, you can download articles as .pdf files.