Study On The Climate, Landform Zoning And Subgrade Design Parameter For Highway In Yunnan Area

As a portion of Yunnan Province transport department technological project"Highway natural zoning of Yunnan Province", thesis is Climate, landform zoning and subgrade design parameter study .When existing natural division of the National highway does not adapt increasingly large number of highway-building needs, this thesis research the provincial natural division by the basis of more accurate data from a new theoretical system and method level.The purpose of the study subjects reveals geographical distribution, the changes of time and space of Yunnan complex elements of the natural environment and Highway Construction on the positive and negative impact. Subject provides macro-related scientific research, decision-making "material" based on background for the highway network planning, highway design, construction, maintenance, operation management. The Research results show very important practical significance for Yunnan provincial Highway construction , reduce the cost of highway construction Maintenance costs and sustainable development strategy.Through full investigation and detailed collection of various natural and geographical conditions of Yunnan Province and highway construction-related information, data, maps, highway industry-related technical regulations in the document the specific requirements and regulations, as well as relevant research results, on the basis of referencing division principle and method on natural zoning for highway at home and abroad, the paper proposeds the Yunnan province principle, method and the indicator system of road climate, landform zoning.According to climate zoning in yunnan area, this paper puts forward the research method of climatic zone for highway in this area that is merges by temperature and humidity from bottom to top.When studying the landform zoning for highway in yunnan area; according to the principles such as engineering practicality, region conjugate, integrated analysis and leading factor, relative consistency and occur unity, this paper takes the method called from bottom to top (relate, transform, merge and conclude) and geographical relative analyze.Take the highway engineering construction and natural condition's correlational dependence as a foundation, this paper propose directly three-level zoning design parameter which serves for the highway construction: subgrade modulus of resilience. Carried on the collection, the analytical study to the Yunnan domestic common soil type and used the mature mathematical method to carry on the mathematical statistic analysis to the collection data, this paper proposes the detailed computation mentality and the concrete computational method.The paper proposes finally the Yunnan Province road climate, landform zoning, and determines different subgrade modulus of resilience in Three-level natural zoning .this result provides a precise master data reference scope.