Planning And Application Of Highway Landscape Based On Spiral Model Architecture

Highway has become an important part of national economy and modern life as important infrastructure and a kind of long distance and large-scale artificial landscape, and its impact on people's daily lives has become increasingly obvious. Simply consideration from use function can not meet the requirements of the times development. Highway is not only transportation corridor, but also visual corridor that has high visual sensitivity. Highway and its landscape like an open window that can reflect ethnic customs, culture, economy and social development of a region, so it did great important effects on tourism development and economic promotion. The proposed highway landscape planning and design based on highway landscape design theory and use spiral model of software engineering for reference. A set of highway landscape design theory frame had been constructed and relevant factors were discussed in detail. Compared with previous studies in specialized road greening and landscaping design, it is innovation of design concept and integration of objective diversification. Main contents as follows:1. Research about highway landscape planning architecture based on spiral model. Previous highway landscape planning is a static planning, and its core idea is planning means compile planning scheme, which means formulating final status construction plan of highway landscape and elaborate implementation schedule. However, on the opinion of dynamic programming, highway landscape planning is a continuous cycle through simulation, practice, feedback, re-entered the cycle of simulation. Only in the constantly repeated process, can it close the ideal state of highway landscape planning. Process of highway landscape planning was divided into six parts, that is determine the planning objectives, collect information, analysis of information, development planning, schedules comprehensive evaluation and 3D animation simulation. The difference with the traditional static planning is that it is not only one time and end. As long as evaluation and 3D simulation result can not meet the need of planning target, the process will go on.2. Theory and practice of highway landscape planning and design. On the base of integrated application of landscape ecology, restoration ecology and so on, frame of highway landscape planning and design was constructed. Highway landscape was classified and process of planning and design was determined. Relying on project practices about Ji-hun expressway and Ping-she tourism highway, landscape sequence section concept was put forward, do many work about highway landscape and environment coordination, and try to use landscape gardening art into highway landscape planning and design. In addition, put more attention to ecological protection design, landscape unit planning and noise reduction design of plant sound barrier.3. Comprehensive evaluation of highway landscape planning and design. For objectively evaluating scheme of highway landscape planning and design, the first step is to clear objectives and put forward relevant indicators and standards, including measurement, testing way for every index. Then comprehensive evaluate the schemes. In view of this, quantitative indicators and qualitative indicators will be dealt with separately. For quantitative indicators, principal component analysis way was used to optimization and selection. For qualitative indicators, fuzzy priority sorting method was used to analyze. Weight index in accordance with objective reality was calculated by fuzzy entropy right coefficient method. On the base of this, comprehensive evaluation model based on matter-element was constructed. It can reasonably and effectively divide level, and comprehensive correlation can reflect more information, formulating a multidimensional evaluation system, which made evaluation results more detailed, more objective and more realistic.4. The application of 3D simulation technology in highway landscape planning and design. For improving intuition and dynamic of schemes analyze and evaluation,3D simulation technology was used to construct real-time interactive three-dimensional animated model of highway. By the way, different schemes can be demonstrated and modified dynamically. In this paper, normal PC was used for platform, and source data came from common road design drawings. Using auto CAD and CARD₁ to construct model, which changed traditional modeling that request high technology.