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Method for determining horizontal evacuation speed of old people in evacuation model

A horizontal direction and evacuation model technology, applied in the field of simulation models, can solve problems that affect the reliability of the evacuation model and large deviations in evacuation speed

Pending Publication Date: 2020-10-30
NORTHEAST GASOLINEEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the set value of the evacuation speed deviates greatly from the actual evacuation speed of the elderly, it will seriously affect the reliability of the evacuation model

Method used

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  • Method for determining horizontal evacuation speed of old people in evacuation model
  • Method for determining horizontal evacuation speed of old people in evacuation model
  • Method for determining horizontal evacuation speed of old people in evacuation model

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with accompanying drawing:

[0040] At present, the main reference for determining the speed of people in the smoke is the method proposed by Karl Fridolf. This method calculates the evacuation speed of people based on the visibility in the current environment. The visibility is obtained according to the formula through the obtained extinction coefficient. For the visibility that begins to affect the evacuation speed of people is a constant 3m, and as the visibility drops by 1m, the speed decreases by 0.34m / s. The initial speed of personnel evacuating in smoke is the speed in a smoke-free environment, and as the visibility decreases, the speed drops to 0.2m / s at the lowest, and then even if the visibility drops again, the speed remains unchanged at 0.2m / s. This existing method for determining the horizontal evacuation speed of the elderly in a smoky environment has the following defects;

[0041] The ...

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Abstract

The invention discloses a method for determining the horizontal evacuation speed of old people in an evacuation model. The method comprises the following steps: acquiring basic characteristics of oldpeople, wherein the basic characteristics comprise visual acuity VA, sight line level height, evacuation speed V0 in a smokeless environment and minimum evacuation speed Vmin; determining an extinction coefficient Kc0 when the evacuation speed of the elderly begins to drop; determining an extinction coefficient Kc1 when the evacuation speed of the old people is reduced to the minimum value; carrying out fire simulation on a building needing fire evacuation simulation through PyroSim software to obtain an extinction coefficient of the sight line horizontal height H of the elderly at any momentof the building, and recording the extinction coefficient as Kc; comparing the Kc, the Kc0 and the Kc1, and then determining the horizontal evacuation speed V of the old people according to a formula.The horizontal evacuation speed, determined by the method, of the elderly in the fire is closer to the real evacuation speed of the elderly, and a scientific basis can be provided for escape management of elderly groups and making of emergency evacuation plans.

Description

technical field [0001] The invention relates to the field of simulation models, in particular to a method for determining the horizontal direction evacuation speed of the elderly in the smog environment of the evacuation model. Background technique [0002] As of the end of 2018, the number of elderly people over the age of 60 in my country was 249 million, accounting for 17.9% of the total population. It is estimated that by 2035, my country will enter a super-aging society. With the continuous deepening of the aging population in our country, the safety of the elderly in buildings has attracted widespread attention from all walks of life. [0003] At present, the research on the emergency evacuation of the elderly mainly focuses on the evacuation model. Through the evacuation simulation, information such as the evacuation time of all personnel, the congestion location, and the flow of people at each exit can be obtained, so as to understand the whole process of evacuation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/13
CPCG06F30/20G06F30/13Y02A10/40
Inventor 黄丽蒂罗开洲徐晓丽贾娇娇董智龙许欣欣
Owner NORTHEAST GASOLINEEUM UNIV
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