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随着城市化的迅速发展,我国城市交通拥堵问题日益严重。许多专家都认为大城市的道路密度低是交通拥堵的主要原因之一,提高路网密度受到诸多条件的限制,其中主要约束之一是全封闭的深宅大院,大型企事业单位、居民小区规模大,占地面积大,导致路网无法加密。中世纪欧洲修建城堡,我国古代修建的城墙均出于安全防范的需要,一些城市实行封闭式管理而修建的院墙围栏也同样是为了安全防范采取的手段。随着社会、
With the rapid development of urbanization, the problem of traffic congestion in our country is worsening day by day. Many experts think that the low density of roads in big cities is one of the major causes of traffic congestion. One of the main constraints is to increase the density of road networks. One of the major constraints is the large enclosed large courtyard, large enterprises and public institutions, Large area, leading to the road network can not be encrypted. Medieval Europe to build the castle, the ancient city wall construction in China are out of security needs, some cities to implement the closed-door management of the construction of the wall fence is also a means to take precautionary measures. With the community,