Wang, J.; Yin, Y.; Wu, H., and Yang, T., 2020. Critical safety risks identification of bridge construction projects in the marine environment based on HHM and SNA. In: Yang, D.F. and Wang, H. (eds.), Recent Advances in Marine Geology and Environmental Oceanography. Journal of Coastal Research, Special Issue No. 108, pp. 48–52. Coconut Creek (Florida), ISSN 0749-0208.

In order to prevent safety accidents in bridge construction projects affected by the marine environment, the hierarchical holographic modeling (HHM) and the social network analysis (SNA) were applied in an integrated manner to identify critical safety risks. Firstly, the HHM frame of safety risks were established from six dimensions, which were risk source, construction unit, control error, risk loss, safety accident, and participant. Then, the risk network topology model, which was the key to connect HHM method with SNA method, was constructed by the Delphi method. Subsequently, the SNA method was applied to study characteristics of this risk network topology model to identify the critical factors. Finally, the critical safety risks of the Tangshan Zhongshan Bridge were studied by this model. The results showed that under the dimensions of risk source and control error, critical safety risk factors were the lack of managers' safety awareness, the lack of safety skills, the low maturity of key technologies, and failing to effectively detect and respond to changes of the marine environment. The integrated use of HHM and SNA is able to fully and effectively identify the critical safety risks of bridge construction projects in the marine environment. The theoretical and case study results of this paper is helpful to prevent construction safety accidents.