Department of Civil Engineering, Faculty of Engineering, Kharazmi University, Tehran, Iran.
Sci Rep. 2022 Dec 20;12(1):21992. doi: 10.1038/s41598-022-25507-5.
On Mars, structural loads and the low tensile strength of in-place Martian binders make existing solutions for Martian structures uneconomical because they are based on the terrestrial sources like inflatable units. Here we address this issue by introducing and analyzing three innovative structural forms in accordance with the structural engineering point of view using symmetric optimum parabolic rotated arch shapes and in-place waterless sulfur-based concrete. These forms minimize the tensile stresses under Martian structural loads. Probable Martian structural loads, including gravity, wind, marsquakes, asteroid and meteoroid impact loads and their effects have been investigated and calculated. The proposed models were analyzed under Martian structural loads using the implicit finite element method and the results were compared to two concrete structural forms from previous studies. The proposed models could tolerate Martian structural loads with complete elastic behavior and would significantly decrease the Martian colonization cost due to using Martian resources and reduce element importing from Earth.
在火星上，结构荷载和原地火星粘结剂的低拉伸强度使得现有的火星结构解决方案不经济，因为它们基于地球资源，如充气单元。在这里，我们通过引入和分析三种创新的结构形式来解决这个问题，这些结构形式符合结构工程的观点，使用对称最优抛物线旋转拱形状和原地无水硫基混凝土。这些形式可以最大限度地减少火星结构荷载下的拉伸应力。对可能的火星结构荷载进行了调查和计算，包括重力、风、火星地震、小行星和流星体撞击荷载及其影响。使用隐式有限元法对所提出的模型进行了火星结构荷载分析，并将结果与之前研究中的两种混凝土结构形式进行了比较。所提出的模型可以承受火星结构荷载，具有完全的弹性行为，并由于使用火星资源和减少从地球进口元件，将显著降低火星殖民化成本。
