An Experimental Study of Individual Ascent Speed on Long Stair

Abstract

An experiment was conducted in a 20-level building to study the individual ascent speed on long stair. 165 college students, including 51 female students and 114 male students, took part in the experiment. Their ascent speeds and heart rates were recorded during they traveled upward. The experimental results show that their ascent speeds decrease continuously for the first 13-14 levels, then the ascent speeds keep at around 0.68 m/s for the males and 0.52 m/s for the females. Further study was conducted to explore the factors that might affect the ascent speeds on long stair. For the males, their ascent speeds show no obvious correlation with their body mass index and their scores of physical fitness test. For the females, it is observed that those who are overweight or fail in physical fitness test have the lowest ascent speed. After traveling upward around 18 levels, the average heart rates increase to 135 bpm and the average relative heart rates increase to 60% for the males, while the average heart rates increase to 150 bpm and the average relative heart rates increase to 70% for the females. Moreover, participates are more likely to use handrail for assistance as they move upward on higher levels.

A fine discrete field cellular automaton for pedestrian dynamics integrating pedestrian heterogeneity, anisotropy, and time-dependent characteristics

“…As shown in fig.23, trajectories of 50 pedestrians evacuating from the 21 st floor underground to the ground floor is are consistent with these observations (Hoskins and Milke, 2012;Chen et al 2017): 1) the trajectories on the platforms are semi-circles whose average radius is nearly half of the stair width; 2) on average, pedestrians tend to walk along the central line of the stairs when they climb. Fig.…”

“…Since long-distance climbing stairs is simulated, fatigue is unavoidable. From previous study (Chen 2017), we know that the desired velocity for a pedestrian has a relationship with the distance which can be denoted as,…”

Simulation Pedestrian Flow Under Vertical Bottleneck Constraints: How Stair Configuration Affects Pedestrian Movement Efficiency

“…Urbanization promotes gradually in the past few decades, more and more complex structures such as high-rise buildings and multi-story underground buildings are built to relieve the increasing pressure on traffic congestion and inefficient use of space [1,2]. As a vertical channel connecting different building levels, stairs are most of the time the only means of egress in high-rise buildings, subway stations, shopping malls, cruise ships and other building facilities [3].…”

Analysis of the Evacuation Capacity of Parallel Double Running Stairs in Different Merging Form Based on Simulation

“…Stairs are one of the most important components for the safe egress of occupants in high-rising buildings or underground buildings in case of fire emergency [1]. In recent years, stairs accidents occur frequently due to the congestion in stairs evacuation, which have caused a large number of injuries, even death, and make the stair channels become public security hidden danger; what is more, it creates huge social panic [2].…”

“…In addition to the difference of age, there are many factors in the process of evacuation. Generally speaking, the sex ratio of the occupants may also affect the result of evacuation; the difference of sex will lead to the change of movement speed and movement path of the evacuation [1]. Meanwhile, the fatigue degree of occupants should be considered during stairs evacuation [19].…”