Evaluation Study On The Capacity Of Anti-Flood Damage Of Bridge And Culvert For Ordinary Road In Liaoning Province

In recent decades,the development speed of the traffic construction of the highway in our country is very quickly。With the rapid development of the traffic construction of the highway, the highway also suffered from the serious damage of the washout at the same time。 The case of the highway washout is more serious in our province, it caused great losses to the lives of people and the economic security of the social。In the highway washout, the characteristics of the bridge and culvert washout is very obvious, the bridge and culvert washout not only caused large economic losses, but also seriously affect the traffic capacity, and the time of repairing is very long。It is obviously, taking a scientific approach to evaluate the ability of the bridge and culvert against the washout and taking the timely remedial to the bridge and culvert which the ability of against washout is poor is very important。This article will evaluate the ability of the bridge and culvert against the washout in LiaoNing province by the method of fuzzy comprehensive evaluation。Intensive studies is carried out according to the following content:1、Taking a research to the basic situation of the highway against washout in our province over the past decade, and analysis the law of the time distribution and the spatial distribution about the highway against washout in our province, and then determine the key research areas of the highway against washout。2、In the process of the research in the key areas, this article take an in-depth research to the situation of the bridge and culvert washout, and then determine the types of the bridge and culvert washout, moreover analysis the reason of the bridge and culvert washout。On this basis, this article take a research to the formation mechanism of the bridge and culvert washout。3、On the basis of the research and the analysis, this article take the research of the numerical simulation of the bridge and culvert anti-erosion by the software of FLUENT。 Though the numerical simulation, we can further understand the mechanism of the bridge and culvert anti-erosion, and on the other hand, we can understand that the rationality of the pier protection form and the rationality of the form of import and export culvert have a great impact on the bridge and culvert against washout。And proposed the reasonable form of the pier protection and the reasonable form of the import and export of culvert。4、Taking a research to the comprehensive evaluation method, include species, characteristics and the application steps。And then determine the suitable method for this research, that is the fuzz comprehensive evaluation method, and select the analytic hierarchy procedure (AHP) method to determine the weight of each index。On this basis, we take the theoretical research to the two methods。5、On the basis of the site investigation, the analysis of the formation mechanism of the bridge and culvert washout and the numerical simulation, we determine the influencing factors of the bridge and culvert washout in LiaoNing province, and establishing the comprehensive evaluation system of the bridge and culvert against washout, and then determine the evaluation criteria of each evaluation index。6、The evaluation system is used in the practical engineering, and then get the evaluation results。We verified the evaluation system has a certain rationality and feasibility though the comparison to the operating conditions of the actual project。At the end of this article, we take a summary of the full text, and then we conduct the outlook of the next phase study of this research。...