Study On The Evaluation Of Safety Management Efficiency Of Building Construction

Modern construction shows the characteristics of the increasing size,construction technology’ complex and changing environment, the construction sitehas frequent accidents and the loss of safety is growing. In this context, the safetymanagement of building construction has become a critical factor in the success ofprojects and in the process of implementing safety management is required to putthe appropriate size of the human, financial and material resources to circumvent orreduce the loss of safety, we cannot give up safety management because securitymanagement inputs will lead to an increase in the cost of construction projects andit cannot blindly raise "safe insurance factor" to achieve the security objectives ofthe construction phase resulting transition inputs and waste of resources. How to geta relatively high output with the less security management is a complex andimportant issue, this paper attempts to solve this problem and proposed the conceptof building construction safety management efficiency, aiming to evaluate thesafety management level of the construction works through building the securitymanagement efficiency evaluation model.This paper uses the construction project safety management theory, inputs andoutputs theory,"iceberg" theory and decision theory, and integrated themulti-disciplinary research in economics, management and activity-based costingmethod and the fuzzy comprehensive evaluation methods to build a constructionsafety management efficiency evaluation model with the core idea of the SystemsEngineering, it not only promoted the cross-integration between multi-disciplinary,and expanded outreach related to the practical application of the theory and isdesirable to have some guidance on engineering practice.By extensively reading the studies on construction safety management andefficiency studies, this paper determined the content and research methods andsummarized the efficiency of the management features, content, the main factors,the characteristics and meaning of the construction and safety management. On thisbasis, it elaborated construction project safety management efficiency evaluationprocess.Inputs and outputs and quantitative analysis of the safety management are thetwo important part of building construction safety management efficiencyevaluation model. Based on the "iceberg theory", the concept and scope of safetymanagement input were clearly defined and discussed the economic characteristicsof the construction safety management from the perspective of economics. And it elaborated measured steps of safety management input based on the activity-basedcosting method and got the realization to quantify security management input. Thisstudy takes the reduction value of the safety loss as the standard to measure thesafety management output. While scientifically estimating the loss of the safety, itfirstly established the evaluation index system of the security losses and theprobability of safety accidents were estimated and the extent of loss of safety wereestimated by the decision tree method based on the maximum amount of loss, theminimum amount of loss and the amount of the expected loss. And then itcompleted the analysis of the safety management output. Based on thequantification of safety management inputs and outputs, the paper constructed thebasic model and mathematical model of the building construction safetymanagement efficiency evaluation and it proposed approaches to enhance the safetymanagement efficiency of building construction from the perspective of optimizingthe safety management input and circumventing safety loss.