Landscape Elements Analysis of Highway Tunnel Entrance

Abstract:

In order to clarify the research and application status of landscape in tunnel engineering， the landscape elements of tunnel entrance were systematically sorted out， the specific expressions of landscape elements were analyzed and corresponding design recommendations were proposed. The results show that the type of tunnel portal determines the overall style of the landscape of tunnel entrance. The overall performance of portal decoration， texture， color， brightness， line type， etc. has a great influence on the landscape effects of portal appearance.The darkened and softened portal wall may reduce the light reflection， decrease tunnel entrance brightness， and relieve portal oppression. Greening at the entrance can restore the ecology and beautify the environment through ecological protection and planting. The light-absorbing ability and low reflectivity of plants may reduce the light at the entrance. The greening creates a comfortable driving environment， which is currently the mainstream of highway tunnel landscape design. The guiding system such as entrance nameplates， sketch buildings， and colored pavements has an information-oriented function. Through reasonable settings of shape， color， location， and style， the sight-inducing function can be correctly used to improve drivers’ attention. The landscape design at the entrance that considers the regional culture and the coordination with the surrounding environment can relieve drivers’ psychological tension and improve safety and comfort.