预制建筑的多目标优化设计方法,以使用殖民地算法将成本,持续时间和碳排放降至最低
Xizhen Xu1,2,3, Qun Wang4, Xiaoxin Ding5
1School of Construction Engineering, Shenzhen Polytechnic University, Shenzhen, 518055, China. x13935739835@163.com.
Scientific reports
|August 28, 2025
概括
这项研究引入了预制建筑的多目标优化设计,使用殖民地算法来降低成本,持续时间和碳排放. 与传统方法相比,这种方法有效地减少了环境影响和建设时间.
科学领域:
- 土木工程
- 可持续建设
- 优化算法
背景情况:
- 传统的现场造工程面临成本,持续时间和环境影响的挑战.
- 预制建筑具有潜在的好处,但需要优化设计策略.
- 为了实现可持续的建筑发展,平衡成本,时间和碳排放至关重要.
研究的目的:
- 提出预制建筑元件的多目标优化设计方法.
- 降低成本,降低施工时间,同时降低碳排放.
- 使用群算法优化预制建筑.
主要方法:
- 使用预制组件 (柱子,梁,板块,墙壁,楼梯) 的多目标优化设计方法.
- 将成本,持续时间和碳排放定义为客观函数.
- 使用建筑技术 (现场造与预制) 作为变量和预制率作为约束.
- 应用群算法以找到最佳解决方案.
主要成果:
- 与现场造相比,优化的预制建筑设计实现了0.42%的成本降低,19.05%的持续时间和13.49%的碳排放.
- 分目标重量和预制率显著影响最佳组件组合.
- 在不同情景下,成本降低了1.26%,持续时间降低了27.89%,碳排放降低了18.4%.
结论:
- 拟议的基于殖民地算法的方法有效地减少了预制建筑的成本,持续时间和碳排放.
- 这种方法为从现场造到预制建筑的过渡提供了可行的途径.
- 这种方法支持建筑行业的可持续发展.
相关概念视频
Design Example: Sustainability in Concrete Building
225
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...
225
Design Example: Dimensioning of Concrete Masonry Construction
138
For the construction of a storeroom using concrete masonry units, it's essential to align the dimensions of the structure with the actual sizes of the blocks and the intended mortar joints. On the site in question, there's a stockpile of concrete masonry blocks with a nominal size of eight by eight by sixteen inches, which are to be used in the construction of the storeroom.
The site engineer has laid out a plan for the storeroom with external dimensions of twelve feet in length and...
The site engineer has laid out a plan for the storeroom with external dimensions of twelve feet in length and...
138
Internal Loadings in Structural Members: Problem Solving
1.4K
When designing or analyzing a structural member, it is important to consider the internal loadings developed within the member. These internal loadings include normal force, shear force, and bending moment. Engineers can ensure that the structural member can support the applied external forces by calculating these internal loadings.
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal...
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal...
1.4K
Unsymmetric Loading of Thin-Walled Members: Problem Solving
163
The shear center of a channel section with uniform thickness, height, and width, is determined by computing the shear force in the member and calculating the moments of inertia of the sections.
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
163
Design Example: Managing Concrete Workability
121
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.
121
Design of Prismatic Beams for Bending
367
The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and...
367


