不同路基断面对风雪流场影响的计算机仿真模拟及分析研究

COMPUTER SIMULATION OF EFFECT OF DIFFERENT SUBGRADE CROSS-SECTION ON SNOW FLOW FIELD

公路以其分布广、里程长、运力强的特征,在国民经济体系中发挥着重要作用,而风吹雪是最为常见的公路危害之一,对公共运输功能的发挥影响极大.依托于鹤大高速公路小沟岭至抚松段,围绕吉林省公路存在的风吹雪问题,运用计算机仿真模拟软件Fluent,对路堤式路基和路堑式路基断面设计形式分别进行仿真模拟,分别计算分析同坡度不同高度、同高度不同坡度、不同入射风速对路堤式路基断面和路堑式路基断面风雪流场的影响,从中找出有效治理和预防吉林当地风吹雪灾害最优化的路基断面设计参数,为当地后续的风吹雪灾害安全防护提供借鉴.

Highway as the most widespread,the strongest network of transport capacity,playing an important role in the national economy.Wind blowing snow as one of highway disasters happen frequently,seriously restrain the function of highway transportation.This thesis is based on China building construction Heda highway Xiaogouling to Fusong section.Relying on the Xiaogouling Fusong section of Heda expressway,and focusing on the problems of wind and snow blowing on the highway in Jilin Province,this paper uses the computer simulation software Fluent to simulate the design forms of embankment type subgrade and cutting type subgrade section respectively,and calculates and analyzes the embankment type subgrade section and cutting type subgrade section with the same slope,different height,different slope and different incident wind speed from the influence of cross-section snow flow field,find out the optimal design parameters of subgrade cross-section to effectively control and prevent the local snow disaster in Jilin,and provide reference for the local follow-up snow disaster safety protection.