Analysis on the fall shock of the urban emergency evacuation device
                                                   LI Song mei, JING Xiu min, WANG Yong, CHANG De gong, WANG Ji li
                      (College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China)

Abstract: Aiming at the safe evacuation problem of escapers in high rise buildings in the event of a disaster, the structure design and anti falling impact analysis of urban emergency evacuation devices were studied. A new type of urban emergency evacuation device structure model was proposed and the structure was segmented design, which the numbers of the cabin were set reasonably according to the layout demand. Using the drop test module DTM of ANSYS/LS DYNA software to analyze the fall shock of the cabin from the height of 5 m, under the conditions of the cabin dropping directly and adding buffer supports at the bottom of the cabin. The results indicated that the maximum stress in the falling process is 433 MPa, and the stress is reduced significantly compared to the direct fall shock, for the deformation energy of the buffer supports consumes part of the impact energy to reduce the direct impact. This study provides theoretical guidance and technology support for the design and manufacture of urban emergency evacuation devices.

Key words: urban emergency evacuation device; segmented design; fall shock analysis; buffer supports