| With the rapid development of China’s economy and the continuous improvement of people’s living standards,people are no longer satisfied with the existing living conditions.At present,most of the building structures of rural residential buildings in China are brick and concrete structures with poor living conditions and high energy consumption.Low-rise residential buildings have a huge market demand,which provides a good platform for the development of a standardised building form of cluster-assembled structural system.In this paper,we propose a new cluster-assembled structural system and study the construction mode and realisation of the cluster-intelligent assembled structural system in rural residential buildings by combining this system with BIM technology,in order to help the development of cluster-intelligent assembled buildings.The main research and conclusions of this paper are as follows.(1)Through research visits and fieldwork,the common building structure systems in villages are summarised and compared,the advantages and disadvantages of each of the three building structure systems,namely brick and concrete structure,concrete structure and wood structure,are analysed,and the structural forms of cluster-assembled residential buildings that are more suitable for contemporary villages are proposed.In terms of design,construction and project management,the differences between cluster-assembled buildings and traditional building models are compared,and the differences in cost components between clusterassembled buildings and traditional buildings are analysed,as well as the main causes of the cost differences,and methods to reduce the cost differences are proposed.(2)Modal analysis and seismic time response analysis are carried out on the structural system to obtain the dynamic characteristics parameters of the structure such as selfoscillation period and frequency,and simulate the seismic response of the structure under a seven-degree multi-interval earthquake and a rare earthquake.The computational analysis shows that the stress and displacement response of the cluster-assembled steel structure under the earthquake are small and the seismic performance of the structure is good,and the results obtained using the design method proposed in this paper are on the side of safety.(3)A case study of a cluster-assembled residential house in a rural village around Zhengzhou was carried out to apply BIM technology throughout its life cycle,from model creation and structural design to production,construction and operation and maintenance using BIM technology.With the addition of intelligence to BIM technology,the work of collision detection,deepening design and collaborative design of various professions was optimised on the basis of ensuring design quality,construction quality and construction cost,and the work efficiency was qualitatively improved compared with traditional BIM technology,providing new ideas for the future development of industrialised construction.(4)From the perspective of whole life cycle costs,the costs incurred in each stage of the whole life cycle of assembled residential houses and brick and mortar residential houses are studied and analysed,and the reasons for the differences are analysed.Through a comprehensive analysis of the costs of the construction,maintenance and demolition phases,it is concluded that assembled steel structures are more economical and suitable for residential buildings.At present,there are relatively few applications of assembled steel structures for residential buildings.The research work in this paper expects people to have a deeper understanding of assembled steel structures and to promote BIM technology and assembled steel buildings in rural areas,providing technical support for the whole life cycle of construction,such as design,production,construction,operation and maintenance,and demolition,and serving the transformation and upgrading of the industrialisation of China’s construction industry and the revitalisation of the countryside. |
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