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With the rapid development of China's highway, people started to pay attention to the landscape design of the entrance of the tunnel. Although there is no lack of the tunnel mouth Landscape engineering practice, and abroad, contains the tunnel portal landscape, including the highway landscape made some progress, but due to the theoretical research in China has just started, the works lack of a systematic theory guidance has certain blindness. The research is carried out in this context, is designed to create a harmonious natural environment of modern tunnel mouth series of landscape, and provide theoretical support and reference for our ascendant expressway tunnel landscape of practice. In this study, based on traffic engineering, sports psychology, landscape, aesthetics, botany and other disciplines, natural, ecological, modern and basic principles. The main results of the paper are as follows: 1. Analysis of the scene space. The richness of the scene space scenery used in the landscape design of the entrance of the tunnel proposed: rich scenery weakening hole design, monotonous scenery strengthen hole design. Entrance landscape design purpose is to eliminate the driver's driving fatigue, the change fatigue to appreciate. In general, the driver because the scenery monotonous generated visual fatigue, strengthen the design of the hole can become the driving excitement, and weakened the visual fatigue, to avoid traffic accidents. Conversely, you can weaken hole design. 2, the establishment of a dynamic visual model, as the evaluation of the scene space. The model includes the contents of the line-of-sight of the driver's field of view, and divided depending on the clarity of the scenery in the driver's mind grade. Within view of the mountain scenery and Yamagata contour in a dynamic changing, and this change affect the driver's psychological, and then set forth requirements for the design, so combining environmental design. According to the model can determine the level of the hole in the line-of-sight, and thus to determine the the cave landscape design strength of the degree or level of detail. Due to the intuitive nature of the model also can use it to improve the efficiency of landscape analysis and design. 3, to establish the serialization component design of the tunnel entrance. Hole in the paper on the basis of the traditional end wall and prominent modern member of the four series: barrel, wing, frame and other series, and pointed out that each of the applicable range. At the same time, through hole components decomposition and combination transform a variety of styles. This article discusses the scene space, dynamic visual model, the hole component serialization results and the actual project can be applied to the landscape design of the expressway tunnel, an important practical value.
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