SD-MOP model for preventing prefabricated construction safety accidents

doi:10.16265/j.cnki.issn1003-3033.2019.01.004

Abstract

Abstract: In order to effectively prevent prefabricated construction safety accidents and solve the problem of multi-objective dynamic equilibrium optimization about safety,schedule and cost,the SD method was used to establish a prefabricated construction safety accident response causal relation diagram across prefabricated building construction based on the depth analysis of factors causing construction safety accidents and interaction mechanism between them. The sensitivity analysis and MOP methods were applied to build an SD-MOP integrated model to explore the key accident response safety input factors and establish and analyze their optimal resource input allocation schemes. A sample project was used to carry out the empirical analysis. The result shows that the most effective way to achieve a multi-objective equilibrium between safety,schedule and cost is to improve level of component lifting technology,and then to strengthen intensity of component inspection before leaving factory,enhance the performance of component safety identification technology and rationally plan frequency of using the component special transport vehicles.

Key words: prefabricated building, construction safety accident, system dynamics(SD), multi-objective programming(MOP), safety input allocation

CLC Number:

X948

CHEN Wei, QIAO Zhi, XIONG Fugang, NIU Li, YANG Daohe. SD-MOP model for preventing prefabricated construction safety accidents[J]. China Safety Science Journal, 2019, 29(1): 19-24.

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