摘要
【目的】存量更新背景下基于绿色城市设计方法对山地城市进行更新探索,对实现城市与自然协同共生具有理论意义与实践价值。【方法】针对自然要素在山地城市复杂条件下呈现的动态特征,引入渗流力学理论,数字化识别地形、水体、生物3类流要素,解析其内在关联和影响机制,顺应渗流规律提出“织脉”设计路径。【结果】以重庆万州区为证,研究发现水体流与城市界面高密粘连,地形流、水体流在城市颗粒中渗透率低,水体流的孔隙阻力存在季相变化,通过扩大蓝绿空间孔隙度、增加滨水空间浸润区等措施可以提升城市渗透率。【结论】基于渗流力学理论,解释山地城市与自然环境的互动规律,顺应规律发掘设计路径,为山地城市生态空间因地制宜规划提供绿色城市设计方法的思路参考。
[Objective] China's mountains account for more than 2/3 of the country's land area,and the combination of large topographic elevation differences and numerous landform types endows the generation and development process of topography,water bodies and creatures with significant fluid characteristics.The early development of mountainous cities was constrained by topography,and the mountainous cities then were mostly built on mountains and by water;with the improvement of human construction capacity,the topography endowed by nature can be changed by human transformation behaviors,making mountainous cities gradually integrate into nature and natural elements intersected and fused with urban space,presenting the phenomenon of seepage.Mountainous cities present a unique urban landscape because of their special geographical environment,and the renewal exploration of mountainous cities based on the green urban design method under the background of stock renewal has theoretical significance and practical value for realizing the synergistic symbiosis between cities and nature.[Methods] This research focuses on the dynamic characteristics of natural elements in mountainous cities under complex topographic conditions,introduces the theory of seepage mechanics,analyzes the intrinsic mechanism and changing law of the interaction between natural elements and urban space,digitally identifies and analyzes the characteristics of natural elements relying on multi-source data such as remotely sensed data and urban architectural data.Specifically,the research identifies the three types of flow elements of topography,water body and creature and,based on relevant seepage indicators such as permeability and wettability,analyzes such flow elements including their intrinsic correlation and influence mechanism.Following the law of seepage in mountainous cities,the research proposes “vein darning” as a green urban design path,based on which the research formulates effective measures to promote the realization of perfect seepage of natur
作者
谭瑛
张芷晗
蔡纪尧
周景翎
TAN Ying;ZHANG Zhihan;CAI Jiyao;ZHOU Jingling(School of Architecture, Southeast University)
出处
《风景园林》
2023年第9期12-19,共8页
Landscape Architecture
基金
国家自然科学基金重点项目“基于大数据的城市中心区空间规划理论与关键技术研究”(编号51838002)
国家自然科学基金“快速城市化背景下水网圩田地区的城乡空间演化机理和规划应对研究”(编号52278050)。
关键词
绿色城市设计
山地城市
城市更新
渗流力学理论
重庆万州
green urban design
mountainous city
urban renewal
seepage mechanics theory
Wanzhou,Chongqing
