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Frontiers of Engineering Management

Front. Eng    2015, Vol. 2 Issue (2) : 122-124     https://doi.org/10.15302/J-FEM-2015039
Engineering Management Treatises |
Construction Technology of Off-Site Precast Concrete Buildings
Ting Gong(),Jian Yang,Hao Hu,Feng Xu
School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Abstract

The industrialization of building construction is gradually becoming a new choice of construction technology driven by some great advantages such as high efficiency in construction, low energy consumption and environmental friendliness. Construction management plays an important part to ensure the quality of projects. A comparison between traditional on-site and modern off-site construction methods has been conducted. The streamlining of the process including the fabrication, transportation, stacking and assembling of precast components has also been analyzed with a discussion on the BIM application in the process.

Keywords off-site construction      precast concrete      modular construction      construction management      building information model (BIM)     
Corresponding Authors: Ting Gong   
Online First Date: 13 October 2015    Issue Date: 12 November 2015
 Cite this article:   
Ting Gong,Jian Yang,Hao Hu, et al. Construction Technology of Off-Site Precast Concrete Buildings[J]. Front. Eng, 2015, 2(2): 122-124.
 URL:  
http://journal.hep.com.cn/fem/EN/10.15302/J-FEM-2015039
http://journal.hep.com.cn/fem/EN/Y2015/V2/I2/122
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Articles by authors
Ting Gong
Jian Yang
Hao Hu
Feng Xu
On-site construction Off-site construction
Labor/time Labor intensiveLonger time for construction Technology intensiveShorter time for construction
Environmental independence Remarkably influenced by the ambient temperature and other factors Prefabricated components can be directly assembled on site
Quality control Hard to find an agreed standard for various situations Quality can be easily controlled through joint connection with fixed size components
Shape flexibility On-site construction is often applied for buildings with complicated designs Buildings are relatively alike due to fixed scale
Construction management Complex management of material stacking, human resources and safety Lean logistics can reduce the material stacking dramatically and help simplify the management on site
Resource consumption Low efficiency of resource usageHuge energy consumption Industrialization of components increases the efficiency of resource usageA specified factory is usually needed
Environmental friendliness Noise and pollution influence the ambient environment greatly Rare noise and pollution hence moreenvironmentally friendly
Construction function Special processes need to be applied for water and fire protectionLower construction efficiency Components of specified functions are precast in factoryLower construction difficulty
Structure performance Better performance in integrality and stability Relatively weaker in stability and earthquake-resistance
Tab.1  Comparison between On-site and Off-site Construction
Fig.1  Integrating design for “sandwich” bearing wall.
Fig.2  BIM integrated management system for off-site precast concrete building.
1 Li, B. (2014). The current situation and development of the prefabricated building construction of China. China Science and Technology Information, 7, 114–115
2 Li, L., Geng, B., Qi, B., Lei, Y., & Luan, L. (2013). A comparative and empirical study of the costs of the prefabricated building construction and cast-in-place building construction. Construction Economy, 9, 102–105
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