Optimization Model for Safety Investment of Prefabricated Building Construction

In order to effectively reduce the probability of safety accidents in prefabricated building (PB) construction, optimize the reasonable allocation of safety investment, construction safety of PB was used as research object. By analyzing the key influencing factors, the prefabricated construction safety accident tree (FTA) was established, and the non-linear programming method was used in combination with the Cobb-Douglas function. Taking the minimum value of the top event occurrence probability as the objective function, an optimal allocation model of safety inputs was established. Sample projects were selected for case analysis. The research results show that daily safety management investment, safety education investment, and building construction sanitation measures investment can effectively reduce the probability of accidents. At present, construction enterprises generally have less investment in this area, which is far from reaching. The actual needs of the project, the enterprise should continue to increase these three inputs to achieve the best effect of controlling the probability of accidents.