| Residential buildings in the residential quarter, with commercial outlets, education, recreation, landscaping, utilities and public facilities. Its water supply system(including the drinking water system, hydrant water supply system and automatic sprinkler system) is an integral part of the building, its reliability is very important to ensure the normal water use and safety of the lives and property of residents. So it’s necessary to study reliability of water system in residential quarter.This thesis analyzed the current situations of reliability research at home and abroad. It given definition of system reliability and provided some important index of reliability. This thesis created system model in reliability research and calculated their reliability prediction.This article introduced different water supplying methods for living system of residential quarter. By comparing decentralized pressure water supply and concentrated pressure water supply effect on the reliability of the water supply system in residential quarter, paper obtained water supply system in decentralized pressure has higher reliability. This thesis uses Analytic Hierarchy Process to analysis 6 kinds usual water supplying methods, getting the variable speed pumps in parallel for the optimal solution.According to fire characteristics of residential quarter, this thesis trying to apply probability theory and mathematical statistics to process quantization to hydrant system, build up reliable mathematical model of single component and build up reliable probability model of the whole system of hydrant water supplying system in residential quarter. To make comparison of different decorate methods of water absorption tube of hydrant pump and drawn fire pump arranged two suction manifolds is the most reliable way.As for automatic sprinkler system, this thesis explicit the importance of setting automatic sprinkler system, pointing out composition and operation mechanism of wet close-type automatic sprinkler system, analyzing reason of system failure and discussing the uncertainty of water supplying system through using weibull function to calculated the data about automatic sprinkler system element, obtain reliability and failure rate curve of the element, this article analysis the system reliability of different systems and different open nozzle number. Also based on the system of water supply uncertainty, the paper gives the system optimization design by example calculation. |
