| Expressways are mainly used to serve transportation,but the expressway landscape with a single beautification function can no longer meet the needs of modern traffic travel,and people’s demand for expressway landscapes with local characteristics is rising sharply.Today,the expressway landscape with regional cultural characteristics has become the most direct way to display the city’s business card.The construction of Sichuan Expressway is mainly used to serve the urban agglomeration of the Chengdu-Chongqing Economic Zone.However,in the investigation and research,it is found that the construction of Sichuan Expressway landscape has the characteristics of uniform design,no regional characteristics,and disorder.As an important transportation hub in the urban agglomeration of the Chengdu-Chongqing Economic Zone,the Chengnan Expressway is the most typical expressway in Sichuan.Based on the research on the overall evaluation of the landscape in the G42 Chengnan Expressway,this topic uses the field survey method,questionnaire survey method and behavioral map method to conduct field research on the landscape of the G42 Chengnan Expressway,and calculates the G42 through the entropy weight method(combined with the Likert scale method).Quantitative analysis of the entropy weights and scores of the landscape visual elements and regional cultural indexes of the Chengnan section of the expressway.It also puts forward suggestions for optimizing the regional cultural landscape of the G42 Chengnan Expressway.The main research results of this topic are as follows:1.Through the division of regional and cultural elements through the cross-regional urban circle of the G42 Chengnan Expressway,combined with the particularity of the linear landscape of the expressway,it is determined that the expressway is divided into landscapes that cannot stay for a long time(central separation zone and roadside slope protection landscape,hub intercommunication)Area landscape,bridge and tunnel landscape,signs and lighting auxiliary landscape)and landscapes that can stay for a long time,and according to the functional division and star rating of the space that can stay for a long time,the Huaikou service area and the Suining service area are determined.,Nanchong service area as the area of the evaluation object after on-site centralized investigation and use.2.Through the field survey on the landscape of the chengnan section of G42,it is found that the landscape of the G42 Chengnan Expressway has no design theme,the landscape function is single,and the expressway users have a high demand for the regional cultural landscape;the entropy weight model is established through the entropy weight method.The calculation of the entropy weight data of the expressway landscape index shows that the service area landscape has the highest score in the landscape visual element index of the G42 Chengnan Expressway,followed by the auxiliary landscape and the hub area landscape;the expressway regional cultural element index has the highest score.It is a natural resource index,and the entropy weight of the impact of scenic resources on the expressway landscape under the classification of natural resources ranks first.According to the research and analysis results,it is determined that the regional cultural expression of the G42 Chengnan Expressway is mainly based on scenic resources,and the regional culture is displayed through the river culture in series with the scenic resources of each road section.3.According to the survey and evaluation of the landscape of the G42 Chengnan Expressway,the corridor landscape theme of "Shushan and Shushui" and the landscape pattern of "one corridor,three districts and eight nodes" are defined: focus on the service area landscape(select Nanchong service area as a case)Functional zoning,route optimization,expansion of leisure green space landscape,and optimization of regional cultural themes in the Jialing River Basin were carried out;for the landscape of the hub intercommunication area(taking the Luoshiba hub area in Chengdu as an example),the hydrological landscape nodes were displayed to promote the local water town and Wetland scenic area resources;road landscape(central divider,roadside slope protection)is the node landscape connecting the hub area and service area,and the optimization suggestions are mainly to reflect the mobility of "landscape";the optimization suggestions for auxiliary landscape and bridge tunnel landscape are mainly: By combining characteristic cultural elements.Through the evaluation and investigation of the landscape of the completed G42 Chengnan Expressway,the research data is analyzed and sorted through the comprehensive evaluation method of information entropy,and the optimization strategy of the landscape of the G42 Chengnan Expressway is put forward(for landscape service and cultural functions Propose reconstruction suggestions),so that the landscape of the G42 Chengnan Expressway can better serve the expressway users.Using the landscape of the G42 Chengnan Expressway as the medium for the dissemination of Shu culture,to drive the propaganda and development of regional culture,to show the regional civilization in the form of expressway "landscape corridor",and to inherit the culture of Shu and the regional expressway.Landscape construction has certain guiding significance and can also be used as a basic model for landscape evaluation of other urban expressways. |
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