Risk Assessment Of Loess Tunnel Construction Based On Fuzzy AHP

With the development of China’s western development and high-speed railway,as well as the need of building a socialist harmonious society to protect people’s lives and property,as well as the needs of environmental protection and ecological development,the risk management of underground construction projects has attracted more and more attention from academic and practical fields,although risk management is not a new topic in the field of civil engineering construction.Specific to the construction risk of loess tunnel project,due to the particularity of construction environment of such engineering project,the harm is relatively large.Therefore,the risk management of loess tunnel construction is an urgent problem to be solved,and it is also the technical requirement to promote the current social development of China.Taking shanggecun tunnel of Xi’an Yinchuan high-speed railway as the research object,this paper studies the feasibility of applying ABAQUS dynamic model and fuzzy hierarchy process to the construction risk management of loess tunnel.Firstly,this paper summarizes and comments on the research of Tunnel Risk Management at home and abroad;secondly,it investigates the types and characteristics of loess tunnel and loess tunnel construction risk,as well as the identification method of loess tunnel construction risk.Then,based on ABAQUS dynamic model and fuzzy analytic hierarchy process,it constructs a risk management model applied to the construction of loess tunnel Finally,the main conclusions are as follows: the case analysis results show that the risk assessment model based on ABAQUS dynamic model and fuzzy analytic hierarchy process is an effective method for highway tunnel construction risk assessment.The application of fuzzy analytic hierarchy process(FAHP)in the construction management of loess tunnel engineering is not only an expansion of the application field of fuzzy analytic hierarchy process,but also a new method of risk assessment for highway tunnel engineering construction.The purpose of this paper is to analyze the construction safety problems of loess tunnel which are more common in the field of transportation,so as to promote the smooth development of China’s transportation and the technical progress and efficiency improvement in the field of civil engineering construction.Northwest China has a large area of typical loess geology,which is also the key area of highway and railway infrastructure construction in China.The civil engineering construction in these areas is inevitably faced with various situations of loess tunnel construction problems.Once the loess tunnel construction risk is encountered,it will not only cause direct waste of manpower and material resources,but alsoaffect the quality of the project Therefore,the study of this topic has not only direct economic significance,but also far-reaching social significance.Its economic significance lies in promoting the efficiency of loess tunnel construction,ensuring or even shortening the construction period,reducing construction risks,saving social resources to the maximum extent,and improving the input-output ratio of loess tunnel project.Its social significance lies in the accumulation of experience and successful cases in the construction technology of loess tunnel,which can increase the performance of large-scale civil engineering construction in China,and play a huge supporting role in infrastructure construction for China’s high-speed railway construction and western development process.This paper mainly uses three research methods,namely literature research method,model analysis method and case analysis method.The typical loess tunnel construction project,shanggecun tunnel of Xi’an Yinchuan high speed railway,is selected as the research object.Based on the literature review of loess tunnel construction experience in China and the support of ABAQUS dynamic model and fuzzy analytic hierarchy process,the Loess Tunnel of this specific project is studied Road construction risk management to carry out a comprehensive analysis.Finally,the paper analyzes the problems found in the model construction,and puts forward targeted countermeasures and suggestions.The core part of the paper is composed of five parts,the first chapter is the introduction,the second chapter belongs to the background knowledge chapter of this paper;the third chapter is the core part of the article,that is,based on ABAQUS dynamic model and fuzzy hierarchy process,it constructs a model suitable for Loess Tunnel construction risk management.The main contents of this chapter include the introduction of model and method,the construction of evaluation index system of loess tunnel construction risk management,the realization of ABAQUS in loess tunnel construction process,and the construction of loess tunnel construction risk model based on ABAQUS dynamic model and fuzzy analytic hierarchy process;the fourth chapter is the specific case analysis,in the project of Shangge village of Xiyin high-speed railway Then based on ABAQUS model,this paper analyzes the construction safety risks of the research object,and puts forward corresponding countermeasures and suggestions for the existing problems.Finally,it summarizes the full text and looks forward to the future development trend.