The Study Of Safety Benefit In Construction Projects

Based on the theory of safety economics, this paper studies on safety inputs, safety outputs and safety benefits in construction projects. The detailed work is as follows.In the part of safety investment in construction projects, both of the definitions of safety investment and safety cost are defined, and all kinds of composing parts in construction projects of them are given. Then the differences and relations of them are compared. In addition, the sources of safety investments in construction projects are analyzed. According to the results of the questionnaire about the safety investment in construction projects in Harbin, the paper makes a quantitative analysis. About the situation of inadequate safety investment, this paper plays chess to analyze the safety investment decision-making of the construction projects using game theory method. The conclusion is obtained that under the market competition if there is no restriction of legal documents, the construction enterprises wouldn't increase the amount of safety inputs voluntarily for keeping the competition advantages.In the part of outputs of safety investment in construction projects, the paper has studied the benefit which each kind of safety investment could produce, and proposes to use the principle of comparing between having the safety investment and not. For doing so, the paper makes"the essence to increase"which is difficult to calculate directly internalize into enterprises'daily management and makes"decrease the benefit"which means the reduction of accident lost of safety outputs as the construction projects'outputs of safety investment. Through the research of computational methods in accident cost and the economic loss overseas, the paper proposes to put the opportunity loss into accident loss. And the paper also establishes the tow-dimensional classified system of accident loss in construction projects which is based on the intersectional relationship of correlative benefit loss and accident loss of the enterprises. This makes the classification of construction projects'accident loss more comprehensive and clearer. In this classification foundation, the paper designs the new statistical system of accident loss of construction projects. According to the calculation...