Risk And Control Ability Assessment Of Major Hazard Sources In Construction

The identification and evaluation of major hazard sources in construction is not only an objective requirement for safe production of construction companies,but also an important work for the safety management of construction enterprises.In order to accurately analyze the risk level of major hazard sources at the construction site,provide reference for the construction company to establish hazard source control measures and judge whether the risk is in a controllable state.Based on the relevant research of major hazard sources,divided into five major hazard source types at the construction site,construct a major hazard source evaluation index system.The use of job conditions risk method to determine the level of hazard source,combined with the risk of the initial value of the data envelope analysis of the effective frontier risk movement model to determine the possibility of increasing the risk level.Finally,judging whether the risk of the project is in a controllable state based on the evaluation of the hazard control capability,it is of great significance to regulate and guide the safe production and construction of construction companies.The main contents are as follows:(1)This thesis introduce the concept of construction hazard sources and the current identification methods commonly used on the site.According to the types of construction casualties in the country,the five major types are taken as benchmarks,and the major risk sources of construction hazards are divided to construct a major hazard risk assessment.The selection of model and specific factor level indicators is based on the hazard sources identified on site.(2)Based on A project on the basis of major hazard identification,risk evaluation method is used to quantify the risk evaluation of major hazard installation with data envelopment analysis(dea)theory predicts the tendency of changes in risk level and risk occurrence probability,the design of construction site risk control links in construction is more targeted.The risk control is an important part of risk management,and the risk control ability should be matched with the risk level of the hazard.(3)Using the rough set index reduction model to screen indicators from the view of management control and human behavior control.The evaluation system of major hazard source control ability of building construction is constructed,and the weight of each index is determined by using Yahhp software combining with the principle of analytic hierarchy process.And combining set pairs to analyze the four-element contact number model,evaluate on-site control capacity of logistics park projects,compare risk source risk level results,and judge that the on-site risks can be controlled.