Abstract
With the rapid development of motorization in our country, gated communities have become the obstacle of the development of urban traffic network. In this paper, focusing on the impact of gated communities on the traffic situation in surrounding area before and after it is opened, we firstly establish a comprehensive evaluation system by fuzzy comprehensive evaluation method and then build up the improved NS model based on Cellular Automata, which put forward the concept of internal road sharing rate in communities. Finally, we select the urban district of different types and surrounding roads in Shanghai as a case, and through simulation and evaluation, we found that the opening of communities is feasible. What’s more, compared with gated communities, the two-way 2-lane urban opening communities have the most optimal effect on improving road capacity.
Highlights
For a long time, due to the impact of historical factors and planning system, closed residential area has become the main form of China's urban residential area
Closed residential area has destroyed the road network structure of urban, and blocked the city’s "capillaries", which is an important factor of urban traffic congestion problems
This paper studied the effect of the traffic capacity of the surrounding area after opening the closed residential area, and the effect of the open residential area is evaluated according to average passing speed, saturation, traffic density and accumulation of passing time
Summary
Due to the impact of historical factors and planning system, closed residential area has become the main form of China's urban residential area. With the rapid development of social economy and the continuous expansion of urban scale, the urban traffic congestion problem in China is increasingly severe. Closed residential area has destroyed the road network structure of urban, and blocked the city’s "capillaries", which is an important factor of urban traffic congestion problems. As the opening of closed residential area, Li Xiangpeng (2014) studied the closed-type residential areas suitable for opening based on the specific distance between the internal and external roads. Zhou and Bian (2000) demonstrated the process and existing problems of the development of the residential area model of China using the neighborhood unit as the prototype. Miao (2004) criticized the social problems arising from the closed residential area and proposed a planning model. Gao and Zhang (2006) analyzed the reasons for the popularization of the closed residential area in China and discussed its negative effects to the city. Li Jun (2007) thinks that the open community needs to grasp the appropriate level by analyzing the security, road system, and public facilities of closed and open communities. Qin (2010) studied the coordination between the closed residential area’s planning models and motorization of the current urban, especially the rapid development of the car, and sought the balanced development between urban land planning and urban traffic development
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