Discussion On Environmental Design Of The Space Under Viaduct Based On The Perspective Of Behavior Safety

Changchun has built many viaducts along with the rapidurbanization.It has constructed a elementary three-dimensional transport system combined with the original elevated bridges.Viaduct is benefit to relieve traffic pressure,but it brings some new problems,such as the destruction of urbanmorphologyand humanized blocks scale,blocking the connection between two sides of the viaduct and affecting the commercialatmosphereand pedestrian safety under the viaduct.Among them,person's behavior safety is very important issue.Based on the perspective of path form and spatial relation,the space under Changchun viaduct could be divided into three types,which are point pattern,linear pattern and composite pattern.In accordance with people's subjective participation,the activities of the space under Changchun viaduct could be divided into two types,which are active activities and passive activities.Through the activities research of the space under viaduct,the main factors which affecting the safety of pedestrians are the pedestrian subjective faults,injury caused by falling of downpipe,ice or snow,harm caused by traffic accident,harm caused by electric shock accident and other risks.Through reasonable planning to the environmental factors which are landscape greening,road pavement,street furniture,identification and lamps,to reduce and avoid the happening of the unsafe behavior under viaduct space,according to different safety factors,combined with related behavior safety theory,geographical features,cultural life and climate conditions of Changchun city.As a result,taking different environmental design strategies to improve the behavior safety of space under viaduct can enhance the quality of the environment effectively on condition that knowing the characteristics of the space under viaduct and the unsafe behaviors of pedestrians according to different circumstances.It can also provide reference for other geographic viaducts and has a certain theoretical andpractical significance.