动态视觉对城市视线通廊影响机制与模型调控

THE INFLUENCE MECHANISM OF DYNAMIC VISION ON URBAN VISUAL CORRIDORAND MODEL REGULATION

当前,我国城市空间整体协同性差、景观秩序紊乱等城市失控表征凸显。动态视线通廊模型分析法缺失导致视觉景观控制系统无法满足城市多模态交通环境的需求,甚至陷入建设性破坏的窘境。探究动态视知觉对视线通廊影响机制已迫在眉睫。历经十年研究发现:动态视功能在城市快行交通景观管控体系中具有关键调节作用。运用人机交互技术进行数据采集,获取隧道视觉梯度缩减率参数变量,推演动态条件的椭圆截面视锥3D空间域、景观控制界面2D视域和圈层式景观协控指标,构建数理模型,揭示动态视觉对景观视觉线性空间影响的科学本源,阐明城市形态的协调共生机制,探寻城市区块的和谐发展策略,为我国城市政策制定和实施管控,提供理论依据与技术支持。

Currently,China’s urban space generally presents poor synergy,disorderly landscape sequence,and other uncontrollable urban phenomena.The lack of analysis on the dynamic visual corridor model leads to that the visual landscape control system fails to meet the needs of the urban multimodal transportation environment,and even falls into the dilemma of constructive destruction.As a result,it is urgent to explore the influence mechanism of dynamic vision perception on the visual corridor.The studies in the past ten years reveal that the dynamic vision function has a key role in regulating the urban landscape system concerning urban express traffic.Using the human-computer interaction technology for data acquisition,this paper obtains the gradient reduction rate parameters of tunnel vision and deduces the coordinated control indicators of the 3D cone spatial domain with elliptical cross section,the 2D domain with elliptical interface and the sphere-type landscape control hierarchy under dynamic conditions.Based on that,it develops a mathematical model of visual corridors,in order to reveal the essential factors causing the impact of dynamic vision on linear landscape visual space.Finally,it elucidates the mechanism of coordinated and symbiotic urban morphology and explores the strategies for harmonious development of urban blocks.It may provide a theoretical basis and technical support for urban policy making and control implementation.