Study On Cruise Evacuation Under The Influence Of Fire Products And Performance-Based Fire Protection Design Of Channel

Unlike land buildings or ordinary passenger ships,large cruise ships have complicated internal layout,many deck levels,narrow and dense passages,and a large personnel density.When encountering unexpected situations such as fire and evacuation,it is easy to cause congestion,which poses a great threat to the life safety of the people on the cruise.Regarding the evacuation of personnel in a fire environment,extensive research has been carried out in the field of construction,but research in the field of ships is still in its infancy.Therefore,it is very necessary to study the evacuation of cruise ships in fire environment.The development of computer technology has provided conditions for evacuation simulation of personnel in fire scenarios,which has become the main direction of current research.However,most studies ignore the impact of fire products on the evacuation of personnel,resulting in a certain deviation between the simulation results and the actual results.This paper takes the system composed of personnel and cruise ship evacuation environment as the research object,and takes fire products and cruise ship channel arrangement as the influencing factors.It combines fire dynamics and personnel evacuation,and the performance-based fire protection assessment of deck channels.The specific research work is as follows:Firstly,the layout characteristics of cruise cabins are analyzed,and the layout of personnel evacuation places is summarized.According to the provisions on fire protection in the "Cruise Standards" and the "International Convention on Life and Maritime Safety",the fire protection design of the cruise ship was analyzed from both "consumer" and "defense" aspects.According to the fire characteristics of cruise ships,based on the existing research,the impact of fire products on the evacuation of personnel was quantified.Furthermore,the fire simulation software Pyrosim is used to simulate the fire development process of the VISTA cruise ship DECK1(1st deck)and a restaurant in the design fire scene,and the dynamic change data of the fire products are obtained,and the fire product data is analyzed regularly.According to the function relationship between fire products and personnel evacuation speed,the influence coefficient of evacuation speed in fire environment is determined.Finally,the evacuation speed influence coefficient is integrated into the ant colony algorithm,and MATLAB is used to solve the optimal evacuation path of personnel in the restaurant fire environment.Based on the evacuation software that has been developed in the laboratory,the impact coefficient of fire products on the evacuation speed of the personnel is integrated,and the evacuation of personnel under different channel layout design schemes of DECK1 is simulated,and the performance of different channel layout design schemes on personnel evacuation performance is analyzed.influences.On this basis,the performance-based fire protection design method was used to evaluate the deck channel layout design from the perspective of safe evacuation of personnel.Through the analysis of examples,the following conclusions are drawn: The improved ant colony algorithm has better practicability in evacuation path selection in fire environment.The evacuation time of personnel in a fire environment is related to the width and number of deck exits.Increasing the width and number of exits can reduce the evacuation time of personnel.Using the method of performance-based fire protection design,deck channel layout design can evaluate the channel layout design from the perspective of safe evacuation of personnel in a fire environment,making the channel design more reasonable.This article aims to provide scientific guidelines for cruise ship fire protection design,personnel evacuation in fire situations,and deck channel layout.