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Assembly buildings, in the context of the low-carbon transformation of the construction industry, achieve superior outcomes in terms of carbon emission reduction, enhancement of building uniformity, and optimization of resource utilization as compared to traditional buildings. However, the supply chain for assembly building is marked by a significant susceptibility to risk and a need for timely fulfillment of requirements. This paper examines the risk of disruption and capacity limitations in the assembly building supply chain resulting from supply disruptions. It establishes a three-tier supply chain for assembly buildings, including primary component suppliers, backup suppliers, assembly manufacturers, and retailers. The study compares the optimal decision-making and coordination strategies of the supply chain members under centralized, decentralized, and joint agreements. The supply chain dual-source procurement decision coordination model is constructed by incorporating capacity constraints and analyzing the effects of supply disruption probability, repurchase coefficient, revenue sharing coefficient, cost, and other parameters on the expected profits of the supply chain members using arithmetic simulation. Research has indicated that when the likelihood of a disturbance occurring rises, the anticipated financial gain for the main provider decreases, while the predicted financial gain for the secondary supplier increases. The implementation of a collaborative agreement between the assembly maker and the parts backup provider would result in much greater anticipated profits compared to the decentralized decision-making approach. The impact of the revenue sharing coefficient on the predicted earnings of retailers and assembly manufacturers is more significant compared to the repurchase coefficient. The selection bias between NA and NB techniques under capacity constraints mostly arises from the assertiveness of the wholesale asking prices of inexpensive component suppliers, leading assembly manufacturers to increasingly prefer the NA option. This paper's research successfully achieves the contractual coordination of the assembly building supply chain, enhances the resilience of the assembly building supply chain, and promotes the long-term sustainable development of the assembly building supply chain.

Aiming at the installation of prefabricated wall panels in today's assembly building, a new type of wall panel vertical machine is designed, which realizes the adjustment of the pitch position and position of the end grabbing device through the arm turnover mechanism, thus realizing the positioning and installation of prefabricated wall panels. The boom turnover mechanism belongs to the hydraulic linkage mechanism. Through the mechanical simulation analysis, it is found that the boom landing mechanism belongs to the main bearing mechanism and the driving cylinder has the largest load. Therefore, a scale optimization model is established for the boom landing mechanism to minimize the maximum load of the driving cylinder as the objective function. Based on the complex method, the optimal scale parameters of the boom turnover mechanism are obtained, and the maximum load of the driving cylinder before and after optimization is reduced by about 36%. Drive cylinder performance is significantly improved. The virtual prototype is built by Creo software and the rigid body dynamics simulation analysis is carried out. The mechanism scale optimization model is validated. Finally, the prototype development and the construction test are carried out, and the working performance of the boom turnover mechanism meets the design requirements.

Prefabricated construction addresses the extensive construction timelines and environmental pollution associated with traditional building methods. However, challenges such as inconsistent design standards and insufficient information exchange persist across various stages. This paper harnesses Building Information Modeling (BIM) technology to mitigate these practical challenges in prefabricated buildings. It adapts the Industry Foundation Classes (IFC) standard framework to BIM technology and proposes an integrated management model for prefabricated building information using BIM. The engineering construction process is segmented into phases, and a combination of structured and unstructured data is employed to construct a hierarchical BIM model that facilitates the scheduling of large-scale data. For optimizing information scheduling, the Dynamo software programmatically divides components of the prefabricated building, and Python is utilized to streamline the development of corresponding nodes. A case study involving a multi-story residential building in Shijiazhuang City, Hebei Province, demonstrates the benefits of this parametric design approach. Optimizations in the production and construction processes led to a reduction in total project duration by one day and an increase in direct economic benefits by 1,590,500 yuan, thereby underscoring significant financial advantages. This research contributes to the rapid implementation of functional requirements in prefabricated buildings, enhances work efficiency, and offers a novel approach to parametric modeling for this sector.

In recent years, the informatization technology of BIM and digital twin has been applied to the field of assembled buildings, especially the advantages of BIM technology applied in the construction industry are gradually emerging. Therefore, this paper takes assembly building as the object and cost control as the purpose of conducting research. Firstly, it introduces the application of BIM technology in assembly building, and secondly, the collision process in BIM technology is optimized by the MLS-MPM algorithm. Economic benefit analysis is carried out on the informative modeling of BIM technology in assembly building, and finally, the constructed model is applied to the basement design stage, the construction production and transportation stage, and the construction stage to evaluate its project benefits. The results show that on the basis of Revit software modeling, the Revit model was imported into Navisworks, and a total of 619 collision points were found in the basement. It is found that the collision results of pipe diameters below DN50 have little impact on the actual construction; pipe diameters above DN50 have a great impact on the elevation in the actual construction, which requires collision detection and drawing modification. The analysis of the economic benefits of information technology modeling in assembly buildings found that it can create benefits of up to 50,200 yuan during the design phase. The build production and transportation phase results in the creation of 58,800,000yuan in benefits. Optimizing schedule and cost control leads to 36,000 yuan and 13,500yuan benefits in the construction phase, respectively. This study is very important to provide a reference for the application of information technology in assembly buildings for future trends.

With the rapid development of science and technology, the traditional construction industry is facing the urgent need for transformation and upgrading, and how to achieve the performance optimization of the assembly building frame has become an urgent problem to be solved. The research constructs the antique assembly building frame using BIM technology and uses a Matlab genetic algorithm to optimize the model of the building frame. The efficacy of the optimized assembly building is analyzed, and the safety performance of the BIM-Matlab frame building proposed in this paper is compared with that of the traditional frame building and the anti-buckling frame building to explore the effectiveness of the performance optimization of the BIM-Matlab frame building. The values of the structural non-lateral stiffness ratio of the BIM-Matlab assembly building are all greater than or equal to 1, and the seismic shear weight ratio meets the requirements. The displacement ratio and inter-story displacement ratio meet the code requirements under all working conditions. The building foundation’s zero stress zone is 0.00%, and the minimum stiffness-to-weight ratio value of 38.69 is enough to pass the overturning resistance and stability test. The BIM-Matlab framed building can endure earthquakes with greater intensity and safety reserves than conventional framed buildings and anti-flexural framed buildings, which are more secure in earthquakes.

At present, in the assembly building construction practice, the relevant subjects lack the concept of building quality management and awareness of responsibility, and the rights and duties of the subjects of each link are not clear in the division of responsibility for building quality. In this paper, based on the deep confidence network, for the problem that the accuracy of the traditional DBN model will gradually decrease, a genetic algorithm is introduced to optimize the conventional restricted Morzmann machine, and the number of nodes in the hidden layer of the genetic algorithm optimization DBN node number process is obtained after the improvement. The optimal method for planning building quality assessment is selected based on the comparison results of the established DBN algorithm function. Then, the optimal building quality assessment model is constructed. Then design the evaluation index system for quality influencing factors and verify it with structural equations. Finally, the model is used to quantify the degree of influence of assembly building quality. The study concludes that all path coefficients affecting the quality of assembled buildings are greater than 0.5, the P-value is less than 0.001, and the five proposed hypotheses are all valid. In the assessment of the quality of residential projects, the final results of excellent, good, moderate, and qualified accounted for 0.1952, 0.2299, 0.3086, and 0.2663, respectively, and the quality of the project’s construction was evaluated as a good grade. This study provides a new method for improving the awareness of quality responsibility among relevant subjects in the construction industry and guaranteeing the level of building quality.

This paper explores the application of BIM technology in the whole life cycle management of assembled buildings and investigates its role in improving construction efficiency, reducing costs and optimizing project management. The application of BIM technology in each stage is analyzed using principal component analysis and structural equation modeling methods. It was found that introducing BIM technology can significantly improve the efficiency of the design, production, construction and later operation and maintenance of assembly buildings. Specifically, in the design stage, BIM technology enhances the design efficiency through collaborative design; in the production stage, the production process is optimized through information management; in the construction stage, the 3D visualization tool of BIM reduces the construction errors and improves the construction efficiency; and in the operation and maintenance stage, the data management function of BIM technology improves the efficiency of the operation and maintenance of the building. The results show that applying BIM technology can reduce costs by about 20% over the entire project cycle. The conclusion indicates that BIM technology plays a vital role in the whole life cycle management of assembled buildings, which not only improves the efficiency, but also significantly reduces the cost, and is of great significance in promoting the modernization of the construction industry.

To realize the combination of artificial intelligence and building material manufacturing and its construction in the assembly building, this paper conducts a comprehensive evaluation analysis of assembly building material manufacturing based on a fuzzy object element evaluation model. Firstly, a comprehensive evaluation index system of 5 primary indicators and 18 secondary indicators corresponding to them is established based on the characteristic data of construction material manufacturing. Secondly, the weights of the relevant construction material manufacturing indicators are calculated by combining the ANP method and entropy weighting method to comprehensively evaluate construction materials and construction material utilization of a specific assembly building project. Finally, the constructed evaluation model is applied to the Guiyang JY project, and the fuzzy object element evaluation model calculates the primary and secondary index weights. From the performance of the primary indicators, the average weight value of the entropy method is 19.37%, which is better than the average weight value of 18.15% of the hierarchical analysis method. In terms of the performance of the secondary indexes, the average weight value of the entropy method is 5.09% compared to the average weight value of the hierarchical analysis method of 4.96%, which is more favorable to the research and analysis of the construction of assembled buildings. This study has a guiding reference value for improving the construction level of assembled buildings in China by analyzing artificial intelligence technology in material manufacturing and assembled building construction.

The construction industry's commitment to achieving carbon neutrality has underscored the urgency of promoting green and low-carbon sustainable affordable housing. However, the development process has encountered several challenges, including conflicts between the central and local governments arising from differences in value preferences, financial constraints faced by local governments, inadequate access mechanisms, lenient screening processes, insufficient funding, and remote locations. Despite its significance, the policies related to affordable housing, especially in the context of assembly affordable housing, have received limited systematic examination. To address this research gap, this paper presents a comprehensive review and analysis of China's affordable housing policies. Firstly, it compiles and compares recent affordable housing policies in China, serving as a valuable reference for future affordable housing construction endeavors. Secondly, it conducts an in-depth analysis of the barriers and challenges obstructing affordable housing development in China, and proposing corresponding measures for improvement. Moreover, this paper identifies significant opportunities for affordable housing development in the country and explores the potential synergy between the development of assembly buildings and affordable housing by leveraging their respective attributes. By illuminating pertinent policies and associated issues, this research aims to inform policymakers, practitioners, and stakeholders involved in the affordable housing sector. Additionally, it aims to stimulate further research and innovation in the field, contributing to effective and sustainable housing solutions for low-income communities and society at large. This paper systematically analyzes the current status of affordable housing policies, challenges and opportunities. It also discusses the application of assembly building techniques in the realm of affordable housing, proving valuable insights to address traditional housing issues.

Copyright of New Building Materials / Xinxing Jianzhu Cailiao is the property of New Building Materials Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Guangdong Architecture Civil Engineering is the property of Guangdong Architecture Civil Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In the process of industrialization promotion of assembly building there are practical problems such as weak supply dislocation of supply structure and low degree of industrial chain. These problems impede the process of assembly industrialization. From the point of view of supply side this paper puts forward the industrialization development mode of "technology chain-industry chain" of assembly building which promotes and evolves the development stage of assembly building industrialization. It is "reverse-transformation" in the initial stage to strengthen the supply base, and "upgrade-innovation" development in the growing stage to enhance the meet of supply and demand, and "scale-diffusion" development in the mature stage to improve supply capacity. Therefore this study puts forward countermeasures from policy formulation industry matching, and enterprise competitiveness aspects. [ABSTRACT FROM AUTHOR]

Given the safety problems of construction equipment, prefabricated components and construction workers in prefabricated building construction, the warning platform for prefabricated building safety is constructed by using the building information model and the internet of things technology. First, through the demand analysis and function design, the fault tree of prefabricated construction hazards is developed. In this study, the dangerous sources in the prefabricated construction include unsafe acts, unsafe state of object and the unsafe conditions. On this basis, we use BIM and internet technology to establish safety early warning platform, which includes three subsystems: data collection subsystem, data transmission subsystem and safety early-warning subsystem. The results show that the combination of Internet of Things and BIM can quickly and accurately predict the dangerous sources in the construction of prefabricated buildings. [ABSTRACT FROM AUTHOR]

Copyright of New Building Materials / Xinxing Jianzhu Cailiao is the property of New Building Materials Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)