Research On Construction Safety Risk Evaluation Of Foundation Pit Engineering

Under the background of deepening urbanization process,our country is gradually increasing the development of underground space,so as to meet the needs of people’s production and life.Under this background,the scale of foundation pit engineering is also increasing.Foundation pit engineering is a systematic engineering,involving a variety of construction matters.The construction unit will be interfered by various factors in the construction of the foundation pit project,so that the construction safety risk increases.In order to ensure the safe development of foundation pit construction activities and improve the construction quality,we need to pay attention to the identification and analysis of risks in the construction process,and then put forward scientific construction safety risk prevention and control measures,so as to control the safety risk of foundation pit construction.Taking Jingjiang Project of Jinyi Industry as an example,this paper explores the construction safety risk management strategy of foundation pit engineering,which has guiding value for the efficient promotion of the construction safety risk management of foundation pit engineering.This paper first describes the background,purpose and significance of the deep foundation pit construction safety risk evaluation research,and then summarizes the domestic and foreign research progress on the identification of safety risk factors of deep foundation pit construction safety risk evaluation,on the basis of the current domestic and foreign research on the deep foundation pit construction safety risk evaluation theory,This paper puts forward the existing problems in the research of the construction safety risk evaluation of deep foundation pit engineering,and indicates the content and purpose of this paper.By summarizing and analyzing the risk theory,hazard source identification,deep foundation pit engineering,safety risk assessment theory,deep foundation pit construction safety risk assessment theory,combined with the characteristics of deep foundation pit engineering regional,comprehensive,sensitive and so on,the common deep foundation pit construction risk assessment methods are compared and analyzed.establish the safety risk evaluation system.In addition,AHP and entropy weight method are used to determine the weight of each safety risk evaluation index,fuzzy analysis method for deep foundation pit construction safety risk calculation,safety risk evaluation,safety risk classification.Finally,through the method of case evaluation,taking Jingjiang Project of Jinyi Real Estate as a case study,from the perspective of engineering general situation,engineering geological conditions,meteorological and hydrogeological conditions,and surrounding environment,the project is briefly introduced.Establish risk evaluation index of foundation pit engineering.Using expert scoring method,entropy weight method and fuzzy analysis method to evaluate foundation pit engineering.According to the evaluation results,it is of practical significance to take corresponding measures to control the construction safety risk of deep foundation pit.Figure [2] Table [24] Parameter [58]...