毕业论文关键词：高层建筑；消防系统设计；安全现状；规范

Fire Fighting Design of a Commercial Office Center Building

Design general description (Abstract): the design object is a commercial office building。 Building height 59。2m。 The design life is 50 years。

The main contents of the design include: the analysis of domestic and foreign high-rise building fire safety situation; design key; office building fire smoke control design of plane design; office building; building evacuation design; configuration design of fire hydrant system design office; office buildings; office building sprinkler system; automatic alarm system design office building fire。

This design object is a kind of public building, the fire resistance grade is level one。 The distance between the design objects and the surrounding buildings is more than 9m, and the distance between the high-rise buildings in the project meets the requirements of 13m, 9m, high-rise and skirt rooms。

The construction plane refractory designed according to the structure and use of the building and the corresponding standard, 1 to 15 layers of each floor area of 1# office building design of the project does not exceed the requirements of 2000m2 specification, the horizontal direction of each floor is pided into a fire zone。 2# commercial buildings, 1 to 3 floors, each floor is pided into two fire zones。

Safe evacuation route for the room, aisle, room, staircase。 The design of the main building of the project from four to fifteen floors, each floor is a fire zone, in the fire zone two safety evacuation entrances, the evacuation width requirements。 The distance between the two exits is greater than five meters, and the safe evacuation distance is 19。7m, which meets the requirements of the code。 The design of the main building of the project from one to three floors, each floor is a fire zone, three floors in the fire zone, four evacuation entrances, one or two floors in the fire zone seven evacuation entrances。 The safe evacuation distance is 19。7m, which meets the requirement of the specification。

The dangerous level of design object is serious dangerous level, the type of fire is mainly a type a fire, and there is E fire at the same time。 Design and configure ammonium phosphate dry powder portable fire extinguisher (MF/ABC5), minimum fire extinguishing level of each extinguisher is 3A, maximum protection distance is 15m。 Specific design methods see 3。1。5 fire extinguisher design summary。

The design and calculation of hydrant water supply system mainly includes two parts: outdoor and indoor fire hydrant system。 The water consumption of outdoor fire hydrant is 30L/s, and 3 outdoor low pressure ground hydrant are set up。 Indoor fire hydrant water consumption is 43。78L/s, fire hydrant protection radius 28。1m, layout spacing 24。9m。 The total head loss is 0。00699MPa, among the most unfavorable point fire hydrant and fire pool minimum water level elevation difference is 0。7MPa, fire hydrant at the most unfavorable point of work pressure is 0。00839MPa, the fire pump required lift is 38m, flow rate 33。68L/s, selection of XBD12。5/45-125-315 models with a preparation of fire pump, fire pump adapter, 4 taiwan。

Automatic sprinkler system adopts wet automatic sprinkler system。 In accordance with the specifications, to determine that it belongs to the middle danger level I dangerous level。 The design of square sprinkler arrangement method is used to determine the position and shape of the area at the most unfavorable point。 The number of nozzles at the worst point is calculated, and the number of nozzles is 17。 The area of action is 165。37m2。 The total loss of pipeline is 0。9043MPa, among the most disadvantageous sprinkler and fire pool minimum water level elevation difference of 0。7MPa, 0。009MPa working pressure nozzles at the most unfavorable point of the flow of 23。42L/s, using XBD13。0/30-135-315L type fire spray pump with a prepared, fire pump adapter 3。