基于行人自适应行为的弯道几何设计研究

针对轨道交通弯道精细化和人性化设计问题,量化行人自适应特性指标及计算原理,采用行人可控实验采集相关数据,并运用基本图原理验证行人可控实验数据;开展弯道行人自适应特性研究,分析了弯道设计对行人自适应特性的影响.结果表明:弯道角度越大,行人自适应行为的稳定性越强,安全性越高;弯道半径的临界点为7 m,7 m前行人自适应特性随半径增大而趋于一致,稳定性增强,7 m后则降低;角度在120°,160°]和半径4,10]m范围下的行人自适应特性表现最稳定,效率最高;角度100°,110°]与170°和半径11,15]m次之;角度90°和半径1 m的行人稳定性最差,最不安全.在客流较大时,建议参考的弯道角度范围为120°,160°]和半径范围为4,10]m.

Curve Alignment Design Research Based on Pedestrian Self-adaptation Behavior

To address the issues about the detailed and humanization alignment design of curve in rail transit, this paper quantitatively analyzes the indexes of pedestrian self- adaptation characteristics and the computation theory, collects empirical data through controlled pedestrian experiment, and validates the empirical data with fundamental diagram theory. Based on this, the pedestrian self-adaptation characteristics research in curve is performed, and the impacts of curve design on pedestrian self-adaptation characteristics are analyzed. The results reveal that: the stability and safety of pedestrian self- adaptation characteristics would be improved with the increasing of curve angle; the critical point of curve radius is 7 m, i.e., the stability of pedestrian self-adaptation characteristics will be improved until the curve radius increase to 7 m, while declined since the radius continuously ascended; the performance and efficiency of pedestrian selfadaptation characteristics is the best with angle in 120° ,160° ] or radius in 4, 10]m, worse with angle in 100°,110°] and equal to 170° or radius in 11,15]m, while the worst stability and safety with 90°-angle or 1 m-radius. Thus, the angle of curve in the 120°, 160°] and radius in 4, 10]m are recommended when the passenger flows are large.