长江三峡库区城市街道演变及其建设特点

Evolution and Development Characteristics of Streets in the Three Gorges Reservoir Area

三峡库区的街道建设,具有山地城市与移民迁建城市的典型特点。通过分析三峡库区城市街道的演变过程及其建设特点,从影响街道建设的自然地理因素、对外交通联系等方面,对城市迁建前后街道建设的特征进行了总结,提出了适应水库水位消落变化与山地地形环境的库区城市道路网络建设形态,以及采用高路网密度、低路幅宽度以适应地形变化和节约投资的建设对策;通过总结街道尤其是梯道建设的经验教训,结合库区实际提出了街道演变对移民城市建设的现实思考。

City street construction in the Three Gorges Reservoir Area has a specific character.Some streets have characteristics adapted to changing water levels in the reservoir and to topography.In this paper,we analyze the development course and building characteristics of streets,summarize the influencing factor,and raise some suggestions for net forms,widths,grades and ramps of future street construction in this area.