Benefit Evaluation Model of Prefabricated Buildings in Seasonally Frozen Regions

Qianqian Zhao,Junzhen Li,Sergey Klyuev,Roman Fediuk,Darya Nemova

doi:10.3390/en14217119

Abstract

In order to effectively develop the benefit evaluation model of prefabricated houses in seasonal frozen soil areas, and improve the comprehensive benefits of prefabricated buildings, this paper proposes a life cycle benefit evaluation model for prefabricated buildings in seasonally frozen regions. According to the climatic characteristics of the area, the impact of the seasonally frozen regions is listed as an evaluation index in the construction stage for comprehensive analysis. The 16 indicators that affect the comprehensive benefits of prefabricated buildings are grouped by the nearest neighbor element analysis method. Fuzzy cluster analysis and analytic hierarchy process are used to filter out the most influential index group to calculate the index weight. Then the model proposed in this paper is compared with the existing model to test the validity of the model. The research results show that research and development costs weight is 0.23, design cost weight is 0.10, construction cost weight is 0.22, resource consumption weight is 0.25, building demolition cost weight is 0.04, and seasonal freezing effect weight is 0.16. The calculation result passed the consistency test and the expert scoring result conformed to the normal distribution, which proved the accuracy of the conclusion. It is proposed that the calculation result of the comprehensive benefit score of the model is 1.8% lower than the previous results, which proves the validity of the model. The model can speed up the efficiency of comprehensive benefit evaluation of prefabricated buildings thereby improving the development level of prefabricated buildings.

Highlights

Introduction iationsThe existing research results of prefabricated buildings are mainly reflected in the technical upgrade of the original construction technology and building node methods, improving the degree of green building, lack of improving the comprehensive benefit evaluation of prefabricated buildings, and how to establish and improve supporting auxiliary technologies
The evaluation model proposed by Zhao et when studying the comprehensive benefits of prefabricated buildings was compared with when studying the comprehensive benefits of prefabricated buildings was compared the evaluation model established in this paper
This paper divides the prefabricated building into the planning and design phase, the construction phase, the operation and maintenance phase, the demolition and recycling phase based on the prefabricated building life cycle theory

Summary

Introduction

Introduction iationsThe existing research results of prefabricated buildings are mainly reflected in the technical upgrade of the original construction technology and building node methods, improving the degree of green building, lack of improving the comprehensive benefit evaluation of prefabricated buildings, and how to establish and improve supporting auxiliary technologies. Khan and Yan [1] developed a new type of bolt connection of the long tenon gusset plate for horizontal connection and a long beam bolt for vertical connection, which improves the seismic performance of the fabricated steel structure building. The paper does not propose specific formulas for different bolt connection methods and the seismic performance of buildings. Kebeckova et al [2] studied the adverse effects of the internal microclimate of prefabricated buildings from 1950 to 1990 on the health of users, and proposed corresponding remedial measures, but the research scope was narrow and Licensee MDPI, Basel, Switzerland. Could not be combined with modern prefabricated building technology. Pihelo et al [3]

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Discussion

Conclusion