Research On Internal Drainage Optimisition Design Of Civil Construcyion Roof In Cold Regio

As an important part of water supply and drainage system in architectural engineering,the system of roof rain water drainage directly affect people's situation of production and life.At the same time,the frozen banked-up outfall,frost splitting drain-pipe are common to be seen for the sake of harsh climatic conditions in cold region.In the engineering,how to design a set of effective roof rainwater drainage system in order to drain away water efficiently,how to accomplish this period scientifically and quickly,all are real problems faced by designers.This paper focused on optimization design on internal drainage of civil construction roof and the anti-freezing measures in cold region.First,combined the situation of roof drainage in cold region,grasped the characteristics of roof drainage,and pointed out problems existing in the period of design and using;Then presented the optimizing design strategy and anti-freezing measures of roof drainage in cold region.Make sure the design scheme reasonable and accurate,the engineering applied convenient and quick,the system is convenient to maintain without affecting the artistic and function.The main work includes:(1)Investigation to roof drainage system of typical civil construction in cold region(Harbin).Expound the existing roof types and typical drainage,summarize the basis,principles,contents and steps of roof drainage system design,make clear the existing problems,reasons and harm in drainage system.(2)State the optimizing design strategy of roof drainage in cold region——change “external drainage” to “internal drainage”,change “gravity flow” to the “pressure flow”,change “normal type” to the “greening type”,etc.(3)State the anti-freezing measures and technical requirements from cone,drainage pipes to ground structure in cold region civil building roof drainage system.