基于解析法的高层建筑消防给水系统可靠性分析
发布时间：2018-10-17 14:56
【摘要】：高层建筑是城市现代化的标志之一。因其楼层高度大、人口密集、功能复杂、空间跨度大等特点，一旦发生火灾，给人们的生命财产带来巨大损失。我国高层建筑消防立足于“自救”为主的原则，其消防给水系统主要采用水灭火系统中较有效的消火栓系统和自动喷水灭火系统，其可靠性对保证消防的灭火成功率有着决定性的影响。 本文运用系统可靠性理论，提出了可靠性的几个重要概念，给出了消防给水系统中常用的四种可靠性模型以及可靠度的计算方法。基于解析法，本文对高层建筑消防给水系统的可靠性进行了分析，主要分析内容如下： (1)分析室内消火栓系统和自动喷水灭火系统两大主要系统的灭火过程及作用原理，表明两大系统均为可靠性模型中的串-并联系统。本文将室内消火栓系统简化为四个子系统串联的可靠性模型，而将自动喷水灭火系统简化为五个子系统串联而成，每个子系统均由若干组件并联连接。 (2)分别对两大系统的各子系统及组件进行可靠性分析，建立相应可靠性框图及可靠度数学模型。通过查阅大量文献资料和统计数据，，得到各组件单元的平均故障率，根据故障率与可靠度的函数关系，计算组件及各子系统的可靠度。 (3)结合工程实例分别应用于两大系统中，采用解析法计算室内消火栓系统和自动喷水灭火系统的几种典型不同分区供水方式的可靠度。计算结果表明：两大系统中，水泵并联分区供水方式的可靠性最高。这一结论为消防给水系统的设计提供可靠性依据。然而，我们还应根据具体工程情况合理选择高层建筑消防给水系统的供水方式。
[Abstract]:High-rise buildings are one of the symbols of urban modernization. Because of its large floor height, dense population, complex function, large span of space and so on, once fire occurs, it will bring huge loss of life and property to people. Based on the principle of "self-rescue", the fire fighting system of high-rise building in our country mainly adopts the more effective hydrant system and the automatic sprinkler system in the water extinguishing system. Its reliability has a decisive effect on the fire fighting success rate. Based on the theory of system reliability, several important concepts of reliability are put forward in this paper. Four kinds of reliability models commonly used in fire water supply system and the calculation method of reliability are given. Based on the analytical method, the reliability of fire water supply system of high-rise building is analyzed in this paper. The main contents are as follows: (1) the fire extinguishing process and working principle of the two main systems of indoor hydrant system and automatic sprinkler system are analyzed. The results show that the two systems are both series-parallel systems in the reliability model. In this paper, the indoor hydrant system is simplified as the reliability model of four subsystems in series, and the automatic sprinkler system is simplified into five subsystems in series. Each subsystem is connected in parallel by several components. (2) the reliability of each subsystem and components of the two systems is analyzed, and the corresponding reliability block diagram and reliability mathematical model are established. By consulting a lot of literature and statistical data, the average failure rate of each component unit is obtained. According to the function relationship between failure rate and reliability, The reliability of components and subsystems is calculated. (3) the reliability of several typical district water supply modes of indoor hydrant system and automatic sprinkler system is calculated by analytical method in combination with engineering examples. The results show that the reliability of the water supply system is the highest. This conclusion provides a reliable basis for the design of fire water supply system. However, according to the specific engineering conditions, we should choose the water supply mode of fire water supply system for high-rise buildings.
【学位授予单位】：南华大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU976.5
本文编号：2277045
[Abstract]:High-rise buildings are one of the symbols of urban modernization. Because of its large floor height, dense population, complex function, large span of space and so on, once fire occurs, it will bring huge loss of life and property to people. Based on the principle of "self-rescue", the fire fighting system of high-rise building in our country mainly adopts the more effective hydrant system and the automatic sprinkler system in the water extinguishing system. Its reliability has a decisive effect on the fire fighting success rate. Based on the theory of system reliability, several important concepts of reliability are put forward in this paper. Four kinds of reliability models commonly used in fire water supply system and the calculation method of reliability are given. Based on the analytical method, the reliability of fire water supply system of high-rise building is analyzed in this paper. The main contents are as follows: (1) the fire extinguishing process and working principle of the two main systems of indoor hydrant system and automatic sprinkler system are analyzed. The results show that the two systems are both series-parallel systems in the reliability model. In this paper, the indoor hydrant system is simplified as the reliability model of four subsystems in series, and the automatic sprinkler system is simplified into five subsystems in series. Each subsystem is connected in parallel by several components. (2) the reliability of each subsystem and components of the two systems is analyzed, and the corresponding reliability block diagram and reliability mathematical model are established. By consulting a lot of literature and statistical data, the average failure rate of each component unit is obtained. According to the function relationship between failure rate and reliability, The reliability of components and subsystems is calculated. (3) the reliability of several typical district water supply modes of indoor hydrant system and automatic sprinkler system is calculated by analytical method in combination with engineering examples. The results show that the reliability of the water supply system is the highest. This conclusion provides a reliable basis for the design of fire water supply system. However, according to the specific engineering conditions, we should choose the water supply mode of fire water supply system for high-rise buildings.
【学位授予单位】：南华大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU976.5
【参考文献】
相关期刊论文 前1条
1 徐祖信;水分配系统以可靠性为基础的线性优化模式[J];同济大学学报(自然科学版);1996年05期
本文编号：2277045
本文链接：https://www.wllwen.com/guanlilunwen/chengjian/2277045.html
