Research on safety evaluation model for engineering multi-program group

With the increasing complexity in civil engineering projects, the multi-program group has become a large-scale system problem. Three analysis models for safety evaluation are discussed in this paper: safety comprehensive analysis model, safety performance analysis model and safety contribution-rate model. Then the safety indexes of these models are deduced and build up respectively. Furthermore, the analysis of construction input-output is corresponding to the different safety indexes, which show that the safety evaluation for the construction process of multi-program group is very necessary for both security and economic benefit.