The socio-spatial dysfunction in mass housing cities of Algeria: technical wayfinding analysis by method “movement traces” and morphology analysis (space syntax) by software “depthmap”

Abstract This document develops a model of analysis and investigation of the impact of the socio-spatial dysfunction of the pedestrian movement, as well on urban reproduction, especially the transformations of the facades and also the appropriation of outdoor spaces in mass housing cities of Algeria. The technical analysis and spatial syntax of the visibility (Visibility Graph Analysis – VGA) and the accessibility (All Line Analysis – ALA) was performed by the software “DepthMap©(UCL, Londres)” and the wayfinding dysfunction analysis by the method of “movement traces”. This is a case study as the city 1000 housing of Biskra and city 500 housing of M’sila. In order to verify this hypothesis, we developed a hybrid analysis model, the diagram interference of the two techniques. The interference results show that the majority of pedestrians prefer straight roads and shorter axes with a strong syntax property of visibility and accessibility (integration, connectivity and intelligibility) in directions of the peripheral equipment (adjacent) and to the center of the two cities. These routes have a direct impact on the transformations of the facades and also the appropriation of outdoor spaces. The model developed promises future research on the quantification, modeling and simulation of the process, in particular by cellular automata.

摘要 本研究构建了一套分析与调研模型，用于探究阿尔及利亚大规模住宅城市中，行人流动的社会空间失范对城市再生产的影响，具体涉及立面改造与户外空间占用两类核心现象。本研究借助“深度地图©（伦敦大学学院，伦敦，UCL）”软件，开展了可见性图分析（Visibility Graph Analysis, VGA）与可达性全直线分析（All Line Analysis, ALA）两类空间句法技术分析，并通过移动轨迹法完成行人寻路失范分析。本次研究选取比斯克拉市1000户住宅社区与姆西拉市500户住宅社区作为案例研究对象。为验证所提出的研究假设，本研究搭建了混合分析模型，对上述两类分析技术进行图示耦合分析。耦合结果表明，绝大多数行人更偏好直线路径与短轴道路，此类路径在朝向周边邻近配套设施与两座城市中心的方向上，具备优异的可见性与可达性空间句法属性（整合度、连接度与可理解度）。此类路径对立面改造与户外空间占用均存在直接影响。本研究所构建的模型可为后续相关研究提供支撑，未来可依托元胞自动机（cellular automata）开展该过程的量化、建模与模拟研究。