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Engineering Construction Standard Full-text Information System
Industry Standard of the People's Republic of China
Code for Planting Planning and Design on Urban Road
CJJ75-97
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Industry Standard of the People's Republic of China
Code for Planting Planning and Design on Urban Road RoadCJJ7597
Editing Unit: China Academy of Urban Planning and DesignApproving Department: Ministry of Construction of the People's Republic of ChinaEffective Date: May 1, 1998
Engineering Construction Standard Full-text Information System
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Engineering Construction Standard Full-text Information System
Notice on the Issuance of the Industry Standard "Urban Road Greening Planning and Design Specifications"
Construction Standard [1997] No. 259
Construction Committees (Construction Departments) of provinces, autonomous regions, and municipalities directly under the Central Government, Construction Committees of independently planned cities, and relevant departments of the State Council:
In accordance with the requirements of the former Ministry of Urban and Rural Construction and Environmental Protection's (88) Chengbiao No. 141 document, the "Urban Road Greening Planning and Design Specifications" edited by the China Academy of Urban Planning and Design has been reviewed and approved as an industry standard, numbered CJJ75-97, and will be implemented on May 1, 1998.
This specification is managed by the China Urban Planning and Design Institute, the technical unit responsible for urban planning standards of the Ministry of Construction, and its specific interpretation is the responsibility of the China Urban Planning and Design Institute.
This specification is published by the Standard and Quota Research Institute of the Ministry of Construction. Ministry of Construction of the People's Republic of China
October 8, 1997
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Road Greening Planning
3.1 Road Greening Rate Index·
3.2 Road Greening Layout and Landscape Planning·
3.3 Selection of Tree Species and Ground Cover Plants…
Road Green Belt Design
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Vehicle Separation Green Belt Design
4.2 Street Tree Green Belt Design
Roadside Green Belt Design
5 Traffic Island, Square and Parking Lot Green Space Design.5.1 Traffic Island Green Space Design
5.2 Square Greening Design
Parking Lot Greening Design|| tt||Road greening and related facilities
6.1Road greening and overhead lines
6.2Road greening and underground pipelines
6.3Road greening and other facilities
Appendix A
Terms used in this specification
Additional explanation
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Engineering Construction Standard Full-text Information System
1 General Principles
1 This specification is formulated to give full play to the role of road greening in improving the urban ecological environment and enriching the urban landscape, to avoid greening affecting traffic safety, to ensure the living environment of green plants, to standardize the planning and design of road greening, and to improve the level of road greening planning and design. 2 This specification is applicable to the planning and design of green spaces on urban trunk roads, secondary trunk roads, branch roads, squares and social parking lots.
1.0.3 The planning and design of road greening should follow the following basic principles: 1.0.3.1 Road greening should be dominated by trees, and trees, shrubs and ground cover plants should be combined. The soil should not be exposed.
1.0.3.2 Road greening should meet the requirements of driving sight and driving clearance; 1.0.3.3 The relative positions of greening trees and municipal public facilities should be arranged in a coordinated manner, and the necessary site conditions and growth space for trees should be guaranteed; 1.0.3.4 Plants should be planted in a suitable place and in a suitable environment. Trees, and in accordance with the ecological habits of the plants; soil that is not suitable for greening should be improved for greening; 1.0.3.5
5: When building roads, valuable original trees should be retained, and ancient trees and famous trees should be protected;
1.0.3.6 Road green spaces should be equipped with irrigation facilities as needed; the slope and slope of road green spaces should meet the drainage requirements and be combined with the urban drainage system to prevent water accumulation and soil erosion in the green space.
Road greening should be combined with the long-term and short-term.
1.0.4 In addition to implementing this specification, the planning and design of road greening should also comply with the provisions of the current relevant national standards.
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Engineering Construction Standard Full-text Information System
2.0.1 Road Green Space
Land within the scope of road and square land that can be greened. Road green spaces are divided into road green belts, traffic island green spaces, square green spaces and parking lot green spaces. 2.0.2 Road Green Belt
The strip of green space within the red line of the road. Road green belts are divided into car-separating green belts, roadside tree green belts and roadside green belts.
2.0.3 Car-separating green belt
The dividing strip between the carriageways that can be greened. The one located between the up and down motor vehicle lanes is the middle car-separating green belt; the one located between the motor vehicle lane and the non-motor vehicle lane or between the motor vehicle lanes in the same direction is the two-side car-separating green belt. 2.0.4 Roadside tree green belt
The green belt mainly planted with roadside trees is laid out between the sidewalk and the carriageway. 2.0.5 Roadside green belt
The green belt between the edge of the sidewalk and the red line of the road is laid out on the side of the road. 2.0.6
Traffic island green space
The land used for traffic islands that can be greened. Traffic island green space is divided into central island green space, guide island green space and grade-separated green island.
2.0.7 Center island green space
Center island land that can be greened at the intersection. 2.0.8 Guide island green space
Guide island land that can be greened at the intersection. 2.0.9 Intersection green island
Green land surrounded by interchange trunk road and ramp. 2.0.10 Square and parking lot green space
Green land within the scope of square and parking lot land. Engineering Construction Standard Full Text Information System
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2.0.11 Road greening rate
The sum of the widths of various green belts within the red line of the road accounts for the percentage of the total width. 2.0.12
Garden landscape road
In the key sections of the city, the road that emphasizes the green landscape along the line and reflects the city's style and greening characteristics.
2.0.13 Decorative green space
Green space that is mainly used to decorate and beautify the streetscape and is not allowed to be entered by pedestrians. 2.0.14 Open green space
Green space with walking paths and benches for pedestrians to visit and rest.
Transparent configuration
The trees planted on the green space are within the range of 0.9m to 3.0m above the adjacent motor vehicle road surface, and their crowns do not block the driver's line of sight. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3 Road Greening Planning
3.1 Road Greening Rate Index
3.1.1 When planning the road red line width, the road greening rate should be determined at the same time. 3.1.2
2 The greening rate of roads shall comply with the following provisions:
1 The greening rate of landscaped roads shall not be less than 40%; 2 The greening rate of roads with a red line width greater than 50m shall not be less than 30%; 3.1.2.2
The greening rate of roads with a red line width of 40-50m shall not be less than 25%; 3.1.2.4
1 The greening rate of roads with a red line width less than 40m shall not be less than 20%. 3.2 Road green space layout and landscape planning
3.2.1 Road green space layout shall comply with the following provisions:3.2.1.1 The width of the green belt for planting trees shall not be less than 1.5m; the width of the green belt for dividing vehicles on the main road shall not be less than 2.5m; the width of the green belt for roadside trees shall not be less than 1.5m.3.2.1.2
The green belt for dividing vehicles in the middle of the main and secondary roads and the green land on the traffic island shall not be arranged as an open green land;
The roadside green belt should be combined with other green land outside the adjacent road red line;3.2.1.4
For the road sections adjacent to commercial buildings, the roadside green belt can be combined with the roadside tree green belt;
When the environmental conditions on both sides of the road are quite different, the roadside green belt should be concentrated on the side with better conditions.
3.2.2 Road greening landscape planning shall comply with the following provisions:3.2.2.1 In the planning of the urban green space system, the green landscape characteristics of landscaped roads and trunk roads should be determined. Landscaped roads should be equipped with plants with high ornamental value and local characteristics, and combined with streetscapes; trunk roads should reflect the green landscape style of urban roads; 3.2.2.2 The greening of the same road should have a unified landscape style; the greening forms of different sections of the road may vary;
3.2.2.3 The various green belts on the same section of the road should cooperate with each other in plant configuration, and should coordinate the relationship between spatial levels, tree combinations, color matching and seasonal changes; 3.2.2.4 The greening of roads adjacent to mountains, rivers, lakes and seas should be combined with the natural environment to highlight the characteristics of the natural landscape.
3.3 Selection of tree species and ground cover plants
Road greening should select plant species that are adapted to road environmental conditions, have stable growth, high ornamental value and good environmental benefits.
3.3.2 In cities with cold and snowy areas, deciduous trees should be selected for the trees planted in the green belts dividing vehicles and roadside tree green belts.
3.3.3 Street trees should be selected with deep roots, high branching points, large crowns and dense shade, strong growth, adapted to the environmental conditions of urban roads, and fruit drop that will not cause harm to pedestrians. 3.3.4 Flowering shrubs should be selected with luxuriant flowers and leaves, long flowering period, strong growth and easy management.
Green bird plants and foliage shrubs should be selected with strong germination ability, dense branches and leaves, and tolerance to pruning.
3.3.6 Ground cover plants should be selected from woody or herbaceous foliage and flowering plants with dense stems and leaves, strong growth, few diseases and insect pests, and easy management. Among them, lawn ground cover plants should be selected with strong sprouting ability, high coverage rate, pruning resistance and long green period. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
4 Road Green Belt Design
4.1 Design of Green Belt for Dividing Vehicles
4.1.1 The plant configuration of the green belt for dividing vehicles should be simple in form, neat in tree shape and consistent in arrangement. The distance from the center of the tree trunk to the outer side of the motor vehicle road curb should not be less than 0.75m. 4.1.2 The middle dividing green belt should block the glare of vehicles traveling in the opposite direction. Within the range of 0.6m to 1.5m from the height of the adjacent motor vehicle road surface, the crown of the configured plants should be dense all year round, and the spacing between plants should not be greater than 5 times the crown width. 4.1.3 The width of the green belt for dividing vehicles on both sides is greater than or equal to 1.5m, and should be mainly planted with trees, shrubs and ground cover plants. The crowns of the trees on both sides should not overlap above the motor vehicle road.
For green belts with a width of less than 1.5m, shrubs should be planted as the main vegetation, and shrubs and ground cover plants should be combined.
4.1.4 For green belts with a width of less than 1.5m, the ends should be transparent.
4.2 Design of green belts with street trees
4.2.1 For green belts with street trees, street trees should be planted as the main vegetation, and trees, shrubs and ground cover plants should be combined to form a continuous green belt.
In sections with many pedestrians, when green belts with street trees cannot be planted continuously, permeable pavement should be used between street trees. Tree pools should be covered with pool counters. 4.2.2 The planting spacing of street trees should be based on the crown width of the tree species in its prime, and the minimum planting spacing should be 4m. The minimum distance from the center of the trunk of a street tree to the outside of the curb should be 0.75m.
4.2.3 The diameter at breast height of the seedlings of roadside trees: fast-growing trees shall not be less than 5cm; slow-growing trees shall not be less than 8cm.
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4.2.4 Within the sight triangle of the road intersection, the roadside tree green belt shall be configured in a transparent manner.
4.3 Roadside green belt design
4.3.1 Roadside green belts shall be designed according to the nature of adjacent land use, protection and landscape requirements, and shall maintain a continuous and complete landscape effect within the road section. 2 When the width of the roadside green belt is greater than 8m, it can be designed as an open green space. 4.3.2
In the open green space, the greening land area shall not be less than 70% of the total area of the green belt in that section. When the roadside green belt is used as a streetside park together with other adjacent green spaces, its design shall comply with the provisions of the current industry standard "Park Design Specifications" (CJJ48). 4.3.3 Roadside green spaces adjacent to water bodies such as rivers, lakes, and seas shall be designed as waterfront green belts in combination with the topography of the water surface and the shoreline. The greening of the waterfront green belt shall leave a perspective line between the road and the water surface.
4.3.4 Road slope protection greening shall be combined with engineering measures to plant ground cover plants or climbing plants. Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
5 Traffic Island, Square and Parking Lot Green Space Design 5.1 Traffic Island Green Space Design
, the plant configuration around the traffic island should enhance the guiding role, and a transparent configuration should be adopted within the driving sight distance. Www.bzxZ.net
5.1.2 The central island green space should maintain a transparent driving sight between the intersections and be arranged as a decorative green space.
5.1.3Landscape and other ground cover plants should be planted on the three-dimensional intersection green island. Trees, solitary trees and flowering shrubs can be dotted on the lawn to create a spacious greening effect. Shady ground cover plants should be planted under the bridge. Vertical greening should be carried out on the wall. 5.1.4Ground cover plants should be arranged on the guide island green space. 5.2Square greening design
5.2.1Square greening should be designed according to the function, scale and surrounding environment of various types of squares. Square greening should be conducive to the gathering and distribution of people and vehicles. 5.2.2Tall trees should be planted around public activity squares. The concentrated green space should not be less than 25% of the total area of the square, and it should be designed as an open green space, and the plant configuration should be sparse and transparent.
5.2.3Tree species with local characteristics should be selected for the greening of the distribution squares of stations, docks and airports. The concentrated green space should not be less than 10% of the total area of the square. 5.2.4 Memorial squares should be greened to set off the main monuments and create an atmosphere that matches the theme of the memorial.
5.3 Parking lot greening design
5.3.1 Tall shade trees should be planted around the parking lot, and isolation and protection green belts should be planted; tall shade trees should be planted in the parking lot in combination with the parking intervals. Engineering Construction Standards Full Text Information System
TKANTKAca4 The ends of the green belts that are separated by pedestrian crossings or road entrances and exits should be configured in a transparent manner.
4.2 Design of street tree green belts
4.2.1 Street tree green belts should be planted mainly with street trees, and should be combined with trees, shrubs and ground cover plants to form a continuous green belt.
In sections with many pedestrians, when street tree green belts cannot be planted continuously, permeable pavement should be used between street trees. Tree pools should be covered with pool counters. 4.2.2 The spacing of street trees should be based on the crown width of the tree species in its prime, and the minimum spacing should be 4m. The minimum distance from the center of the trunk of a street tree to the outside of the curb should be 0.75m.
4.2.3 The diameter at breast height of the seedlings of the street trees planted: fast-growing trees should not be less than 5cm; slow-growing trees should not be less than 8cm.
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Engineering Construction Standard Full Text Information System
4.2.4 Within the sight triangle of the road intersection, the roadside tree green belt should be configured in a transparent manner.
4.3 Roadside Green Belt Design
4.3.1 Roadside green belts should be designed according to the nature of adjacent land use, protection and landscape requirements, and should maintain a continuous and complete landscape effect within the road section. 2 When the width of the roadside green belt is greater than 8m, it can be designed as an open green space. 4.3.2
In the open green space, the greening land area shall not be less than 70% of the total area of the green belt section. When the roadside green belt and other adjacent green spaces are used as street parks, their design shall comply with the provisions of the current industry standard "Park Design Specifications" (CJJ48). 4.3.3 Roadside green space near rivers, lakes, seas and other water bodies should be designed into waterfront green belts in combination with the topography of the water surface and the shoreline. The greening of waterfront green belts should leave a perspective line between the road and the water surface.
4.3.4 Road slope protection greening should be combined with engineering measures to plant ground cover plants or climbing plants. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
5 Traffic Island, Square and Parking Lot Green Space Design 5.1 Traffic Island Green Space Design
, the plant configuration around the traffic island should enhance the guiding role, and a transparent configuration should be adopted within the driving sight distance.
5.1.2 The central island green space should maintain a transparent driving line of sight between the intersections and be arranged as a decorative green space.
5.1.3 Ground cover plants such as lawns should be planted on the three-dimensional intersection green island. The lawn can be dotted with trees, solitary trees and flowering shrubs to create a spacious greening effect. Shady ground cover plants should be planted under the bridge. Vertical greening should be carried out on the wall. 5.1.4 The green space of the guide island should be equipped with ground cover plants. 5.2 Square greening design
5.2.1 The greening of the square should be designed according to the function, scale and surrounding environment of each type of square. The greening of the square should be conducive to the gathering and distribution of people and vehicles. 5.2.2 Tall trees should be planted around the public activity square. The concentrated green space should not be less than 25% of the total area of the square, and it should be designed as an open green space, and the plant configuration should be sparse and transparent.
5.2.3 The greening of the distribution squares of stations, docks and airports should select tree species with local characteristics. The concentrated green space should not be less than 10% of the total area of the square. 5.2.4 Memorial squares should use greening to set off the main monument and create an environmental atmosphere corresponding to the memorial theme.
5.3 Parking lot greening design
5.3.1 Tall shade trees should be planted around the parking lot, and isolation and protection green belts should be planted; tall shade trees should be planted in the parking lot in combination with the parking intervals. Engineering Construction Standard Full Text Information System
TKANTKAca4 The ends of the green belts that are separated by pedestrian crossings or road entrances and exits should be configured in a transparent manner.
4.2 Design of street tree green belts
4.2.1 Street tree green belts should be planted mainly with street trees, and should be combined with trees, shrubs and ground cover plants to form a continuous green belt.
In sections with many pedestrians, when street tree green belts cannot be planted continuously, permeable pavement should be used between street trees. Tree pools should be covered with pool counters. 4.2.2 The spacing of street trees should be based on the crown width of the tree species in its prime, and the minimum spacing should be 4m. The minimum distance from the center of the trunk of a street tree to the outside of the curb should be 0.75m.
4.2.3 The diameter at breast height of the seedlings of the street trees planted: fast-growing trees should not be less than 5cm; slow-growing trees should not be less than 8cm.
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Engineering Construction Standard Full Text Information System
4.2.4 Within the sight triangle of the road intersection, the roadside tree green belt should be configured in a transparent manner.
4.3 Roadside Green Belt Design
4.3.1 Roadside green belts should be designed according to the nature of adjacent land use, protection and landscape requirements, and should maintain a continuous and complete landscape effect within the road section. 2 When the width of the roadside green belt is greater than 8m, it can be designed as an open green space. 4.3.2
In the open green space, the greening land area shall not be less than 70% of the total area of the green belt section. When the roadside green belt and other adjacent green spaces are used as street parks, their design shall comply with the provisions of the current industry standard "Park Design Specifications" (CJJ48). 4.3.3 Roadside green space near rivers, lakes, seas and other water bodies should be designed into waterfront green belts in combination with the topography of the water surface and the shoreline. The greening of waterfront green belts should leave a perspective line between the road and the water surface.
4.3.4 Road slope protection greening should be combined with engineering measures to plant ground cover plants or climbing plants. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
5 Traffic Island, Square and Parking Lot Green Space Design 5.1 Traffic Island Green Space Design
, the plant configuration around the traffic island should enhance the guiding role, and a transparent configuration should be adopted within the driving sight distance.
5.1.2 The central island green space should maintain a transparent driving line of sight between the intersections and be arranged as a decorative green space.
5.1.3 Ground cover plants such as lawns should be planted on the three-dimensional intersection green island. The lawn can be dotted with trees, solitary trees and flowering shrubs to create a spacious greening effect. Shady ground cover plants should be planted under the bridge. Vertical greening should be carried out on the wall. 5.1.4 The green space of the guide island should be equipped with ground cover plants. 5.2 Square greening design
5.2.1 The greening of the square should be designed according to the function, scale and surrounding environment of each type of square. The greening of the square should be conducive to the gathering and distribution of people and vehicles. 5.2.2 Tall trees should be planted around the public activity square. The concentrated green space should not be less than 25% of the total area of the square, and it should be designed as an open green space, and the plant configuration should be sparse and transparent.
5.2.3 The greening of the distribution squares of stations, docks and airports should select tree species with local characteristics. The concentrated green space should not be less than 10% of the total area of the square. 5.2.4 Memorial squares should use greening to set off the main monument and create an environmental atmosphere corresponding to the memorial theme.
5.3 Parking lot greening design
5.3.1 Tall shade trees should be planted around the parking lot, and isolation and protection green belts should be planted; tall shade trees should be planted in the parking lot in combination with the parking intervals. Engineering Construction Standard Full Text Information System
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