Contents of highway landscape design

Contents of highway landscape design

Highway landscape design is carried out on the basis of highway technical design. The purpose of the landscape modeling of highway routes and structures is to balance the impact of highways on natural scenery. The impact of the new highway can be integrated with the original landscape to form a new highway transportation landscape system. Therefore, the content of highway landscape design is also closely related to various highway facilities, which mainly includes the following aspects:

1. Aesthetic requirements for highway linear design. The beauty of highway lines is the foundation of highway landscape. When selecting a route plan, through careful reconnaissance, investigate the topography, features and scenery characteristics along each route plan, determine some scenery control targets (such as scenic spots and historic sites, dangerous peaks and rocks, lakes and streams, etc.), and also determine some features that need to be avoided. Targets, such as forest reserves, farmland reserves, etc., are then repeatedly compared to make full use of these scenic resources to diversify the landscape along the line and make the highway cleverly integrated into the natural scenery.

The plane alignment of the highway should be based on curves to better adapt to the terrain. In addition, long straight sections can easily distract drivers and cause traffic accidents. The vertical alignment should try to avoid high filling and deep excavation. , and severely damage the natural environment, the final three-dimensional linear shape should try to adapt to the terrain and coordinate with the surrounding landscape. The overall linear shape should be continuous, smooth, and predictable.

2. Structural landscape modeling. Highway structures mainly include bridges, culverts, overpasses, overpasses, retaining structures, etc. Structures are an important part of the highway landscape. In terms of design, we must not only consider their technical and economic rationality, but also have a novel and beautiful appearance. They must also match the shape of other structures on the route and be consistent with the structure. The natural landscape, customs and customs of the area echo each other.

The smooth closing of the No. 2 Yellow River Bridge on the Customs Highway in our province has transformed the long bridge into a thoroughfare with stones and natural moats, creating a bright landscape on the Yellow River; Relief graphics are designed on the car, integrating local customs and bringing comfort to driving.

3. Landscape design of roadbed and pavement. By rationally adopting roadbed facades and cross-sectional shapes, using separated roadbeds in necessary sections, and based on good linear design, the highway structure can better adapt to the natural terrain, the existing landforms, and the greening. For drivers and passengers, the road surface is an important landscape element that occupies the field of vision. In addition to ensuring a reasonable ratio between the main lane and the road shoulder, pavement materials of different colors can also be used to build road shoulders, lanes and separation strips respectively, which not only strengthens the It improves the decoration of the road and provides good visual guidance.

4. Greening of the central separation belt The important purpose of the greening of the central separation belt is to block light, prevent glare, and guide sightlines; to facilitate the safe passage of vehicles, so its height and width must meet the requirements of current regulations. Low tree species or surface vegetation can be used for greening, and the colors of the central separation zone can be changed according to the terrain and surrounding environment to enhance the beautification effect.

5. Greening of green belts on both sides. By setting up green belts on both sides of the highway and forming a green corridor along the highway, it is an effective means to recreate the landscape environment, prevent dust and sound, and coordinate the relationship between the highway and the surrounding environment. When setting up green belts on both sides, attention should be paid to ensuring visibility conditions inside curves and near intersections to avoid traffic accidents.

6. Slope and vertical greening. Slope greening has a good slope protection function and has a direct effect on stabilizing the roadbed, preventing erosion, and preserving soil and water. Slope greening requires a high coverage rate and a long green period. However, since the soil on the slope is roadbed filling soil or soil exposed after cutting excavation, the soil quality is not suitable for planting, and the irrigation conditions are poor and maintenance is difficult. Therefore, It is required to do a good job in grass seed selection, planting methods, preliminary maintenance and other work.

7. Landscape design of interchanges, service areas, and toll stations. From the perspective of landscape structure, interchanges, service areas, and toll stations are the parts that occupy the largest area and have the most plasticity in landscape design in highway landscape design. Therefore, they can be considered as the climax of the entire highway landscape design. The landscape design of these locations should be comprehensively planned in terms of architectural form, terrain characteristics, local cultural characteristics, etc. The styles of the interchanges and service areas along the entire line should echo each other, making people's travel and tourism more convenient and more tolerant of local customs. .

;