Xu Xizhen, Wang Qun, Ding Xiaoxin, Chen Tiebing, Deng Ronghui
School of construction engineering, Shenzhen Polytechnic University, Shenzhen, China.
School of Economics and Management, Beijing Jiaotong University, Beijing, China.
PLoS One. 2025 May 7;20(5):e0322236. doi: 10.1371/journal.pone.0322236. eCollection 2025.
Prefabricated buildings face greater and different prefabricated components throughout their entire lifecycle, leading to a significant increase in management difficulty. This article proposes an evaluation method based on a multi-layer complex network model combined with an improved topsis. Firstly, by combining relevant regulations, literature, and engineering experience, the factors affecting the connection of components in prefabricated building are identified and the relationships between these factors are clarified to construct a multi-layered complex network model. Secondly, complex network theory is applied to calculate and analyze the importance evaluation indicators of the model nodes. Finally, the nodes are evaluated using the entropy weight optimization topsis method, and key nodes are selected based on the comprehensive importance evaluation value, and simulation verification is carried out by attacking the nodes. A specific model is constructed and analyzed using a building in Shenzhen, Guangdong Province as an example. The study shows that:(1) By analyzing key importance evaluation metrics such as node degree, betweenness centrality, and closeness centrality, the critical nodes identified for the project are "G2," "G1," "S24," and "Q1"; (2) According to the comprehensive evaluation results using the improved topsis method, quality issues are the core cause of connection problems in prefabricated components, with the construction phase being the peak period for such issues; (3) The critical nodes play a significant role in maintaining the coordination and robustness of multi-layer complex networks, and the failure of these critical nodes undermines the network's cohesion and synergy. This study provides new insights and methods for the evaluation and management of prefabricated construction.
装配式建筑在其整个生命周期中面临着更多且不同的预制构件，导致管理难度显著增加。本文提出一种基于多层复杂网络模型并结合改进的理想解法（TOPSIS）的评估方法。首先，通过结合相关规范、文献和工程经验，识别影响装配式建筑构件连接的因素，并厘清这些因素之间的关系，构建多层复杂网络模型。其次，应用复杂网络理论计算并分析模型节点的重要性评估指标。最后，采用熵权优化TOPSIS方法对节点进行评估，基于综合重要性评估值选择关键节点，并通过对节点进行攻击来进行仿真验证。以广东省深圳市的一栋建筑为例构建并分析了一个具体模型。研究表明：（1）通过分析节点度、中介中心性和接近中心性等关键重要性评估指标，确定该项目的关键节点为“G2”“G1”“S24”和“Q1”；（2）根据改进的TOPSIS方法的综合评估结果，质量问题是预制构件连接问题的核心原因，施工阶段是此类问题的高峰期；（3）关键节点在维持多层复杂网络的协调性和鲁棒性方面发挥着重要作用，这些关键节点的失效会破坏网络的凝聚力和协同作用。本研究为装配式建筑的评估与管理提供了新的见解和方法。
