可持续的火星殖民利用形状优化的结构和现场混凝土
Omid Karimzade Soureshjani1, Ali Massumi2, Gholamreza Nouri1
1Department of Civil Engineering, Faculty of Engineering, Kharazmi University, Tehran, Iran.
Scientific reports
|September 22, 2023
概括
降低火星殖民成本是关键. 使用现场资源的新型形状优化结构将材料,能源和建筑费用降低了50%以上,为可负担的火星息地铺平了道路.
科学领域:
- 结构工程 结构工程
- 航空航天工程 航空航天工程
- 材料科学 材料科学 材料科学
背景情况:
- 火星殖民面临着巨大的成本障碍,主要是由于材料进口和能源密集型建筑方法.
- 目前关于火星息地的建议,如充气式或地下结构,被认为过于昂贵.
- 利用现场资源和最大限度地减少能源消耗对于可持续的外星建筑至关重要.
研究的目的:
- 为火星息地提出新的,具有成本效益的结构设计.
- 为了最大限度地减少在火星上施工所需的材料和能源.
- 为了使在火星建筑中使用现场混凝土.
主要方法:
- 开发了三种类型的简单,穿孔和算法形状优化的结构.
- 专注于最大限度地提高压力和最大限度地减少拉力应力,以提高材料效率.
- 对火星环境标准和局限性进行结构性能的评估.
- 3D打印一个 1:200 尺度模型的最佳设计的几何评估.
主要成果:
- 拟议的结构大大减少了建筑的材料和能源需求.
- 与之前的研究相比,已证明可以减少50%以上的建筑成本.
- 设计被优化为现场混凝土利用和增强结构完整性.
- 确定了最大化压力强度的结构形式,适合火星条件.
结论:
- 形状优化的结构为可负担的火星建筑提供了可行的解决方案.
- 拟议的设计代表了可持续的外星建筑的重大进步.
- 使用现场资源和创新的工程技术,可以最大限度地降低建筑能源和材料成本.
相关概念视频
Design Example: Sustainability in Concrete Building
183
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
183
Concrete
374
Concrete is a vital construction material extensively used worldwide, primarily valued for its strength, durability, and versatility, which it provides for various structural designs. Concrete generally comprises ingredients like Portland cement, coarse gravel, fine sand, and water. Concrete can be mixed by simple hand methods or industrially at computer-controlled plants. The mixture consists of aggregates and a paste made from water and Portland cement. This paste coats the aggregates and,...
374
Placing Concrete
125
The concrete is placed as close as possible to its final position to avoid segregation. The placed concrete is then fully compacted to expel the entrapped air, and the next layer of concrete is laid while the underlying layer is still in the plastic state. The rate at which concrete is placed and compacted is kept equal.
While placing concrete, care is taken to ensure that the concrete is laid in uniform layers, and hand shoveling and moving concrete using poker vibrators is avoided. Also,...
While placing concrete, care is taken to ensure that the concrete is laid in uniform layers, and hand shoveling and moving concrete using poker vibrators is avoided. Also,...
125
Shrinkage in Concrete
123
Shrinkage in concrete is primarily due to water loss from evaporation, hydration of cement, or carbonation, leading to a reduction in volume. The volumetric contraction results in volumetric strain in concrete. However, in practice, shrinkage is measured as linear strain, which is one-third of the volumetric strain.
When concrete is still in its plastic state, it can undergo a decrease in volume by about 1% of its absolute volume. This decrease is known as plastic shrinkage. It arises either...
When concrete is still in its plastic state, it can undergo a decrease in volume by about 1% of its absolute volume. This decrease is known as plastic shrinkage. It arises either...
123
Design Example: Managing Concrete Workability
95
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
95
Workability of Concrete
118
The workability of concrete is a crucial property that affects its handling, placing, and finishing during construction. It describes the ease with which concrete can be mixed, placed, compacted, and finished. Workability is primarily concerned with the concrete's movement and its ability to resist internal friction and external resistance from molds and reinforcements during the application process.
Concrete's workability is determined by its resistance to internal forces that arise...
Concrete's workability is determined by its resistance to internal forces that arise...
118


