环境行为学视角下的步行桥坡度的宜步性要素与优化策略研究

Study on Walkability Factors and Optimization Strategies of Footbridge Slope from Perspective of Environmen-tal Praxeology

步行桥作为当今城市滨水景观的重要连接纽带已在各个地区被广泛建设。其是城市重要的步行载体,其自身的宜步性水平具有重要的价值,而其中以坡度为代表的舒适性设计对其影响最为显著。在环境行为学视角下,步行桥坡度设计应当兼顾心理感知层面与生理感知层面的平衡,其对于步行桥宜步性程度具有重要价值。基于帕累托最优的多目标优化策略,可将心理与生理层面的综合优化分别转译为针对平直区段长度与大坡度爬升阶段长度的优化。通过运用参数化的手段,将桥体坡度拆解为逐点坡度,提出了实现最高宜步性水平的优化路径与方法。

As an important link in today's urban waterfront landscape,the footbridge has been widely constructed in various regions.It is an important walking carrier in the city,and its own walkability level has important value.And the comfort design represented by the slope has the most significant impact on it.From the perspective of environmental praxiology,the slope design of the footbridge should take into account the balance between the psychological perception level and the physiological perception level,which is of great value to the walkability of the footbridge.Based on the multi-objective optimization strategy of Pareto optimality,the comprehensive optimization at the psychological and physiological levels can be translated into the optimization of the length of the straight section and the length of the steep climbing stage respectively.By using parametric means,the bridge slope is decomposed into point-by-point slopes,and an optimized path and method to achieve the highest level of walkability are comprehensively proposed.