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The mechanism of hindering occupants’ evacuation from seismic responses of building

  • Meiling XiaoEmail author
  • Yao Zhang
  • Haiyan Zhu
Original Paper
  • 56 Downloads

Abstract

Pedestrian evacuation from buildings during an earthquake needs to consider human behavior and building shaking. This study sets up an indoor evacuation model based on the social force and dynamic mechanics. First, social forces were formulated in the Eulerian coordinate system, seismic force that excites on pedestrians in a multi-story building is derived from structural acceleration, and an evacuation criterion is given based on above forces. Second, a simulation was performed through VB programming, which accounts for the situation that people evacuate from a walkway. Parameters of the social force model are modified in order to estimate pedestrians’ acceleration in concerned situation. Third, structural dynamic responses under a series of ground motion excitations with varying peak values are acquired through finite element analysis to determine pedestrians’ seismic forces. Then, pedestrians’ ability to escape safely is evaluated according to evacuation criterion. Results show that seismic force would increase when pedestrian located on higher floor or ground excitation is of more dramatic level. Additionally, the possibility of survival is likely minimized as long as seismic force is larger than social force. This proposed model is capable of describing the effects of environment on human behavior during earthquake evacuation.

Keywords

Eulerian coordinate system Evacuation simulation Social forces Seismic force 

Notes

Acknowledgements

The writers wish to express their appreciation for the award of the National Natural Science Foundation of China (Grant 11461078).

Supplementary material

11069_2018_3563_MOESM1_ESM.mp4 (6.9 mb)
Supplementary material 1 (MP4 7033 kb)
11069_2018_3563_MOESM2_ESM.mp4 (5.6 mb)
Supplementary material 2 (MP4 5699 kb)

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.School of Architecture and Urban PlanningYunnan UniversityKunmingChina
  2. 2.School of CityQujing Normal UniversityQujingChina

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