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毕业论文关键词：地下建筑；消防设计；消火栓系统；自动喷水灭火系统；火灾自动报警系统
Fire protection design of a science and technology building’s underground construction
The general description of the design：Design objects for a science and technology building, the project is located in the pudong new area, base scope XiYing road in the east, west linpu hengjing building, yao hua road to the north. The project total construction area of about 24481.97 square meters, the main function for office and commercial buildings, underground garage on the second floor and civil air defense construction area of 3641.0 square meters. The main building total 73.4 meters high.
This design main content includes: (1) a certain technology mansion construction total plane design; (2) a fire zone in science and technology building, underground building design; (3) a smoke in science and technology building, underground building design; (4) a safety evacuation design in science and technology building, underground building; (5) a fire extinguisher in science and technology building, underground building configuration design; (6) a fire water system design in science and technology building, underground building; (7) a science and technology building, underground building automatic sprinkler system; (8) is a science and technology building, underground building fire automatic alarm system.
Construction total plane design is composed of multiple components, mainly includes the architectural fireproof rank, fire prevention span and fire lanes. After the access to the related specification of building fire, can be set for this topic selected buildings belong to the category, belongs to the garage Ⅲ class, determine the fire endurance level; The technology mansion and the surrounding buildings distance is much more than 9 m, within the project meet the distance between the high-rise building spacing between top 13 m, 9 m top and skirt room requirements, in line with the requirements of specification. The design of building fire lane width minimum to 4 m, the width is 7.4 m, and the turning radius of 14.5 m, comply with building codes.
This design will be underground layer and underground layer respectively as two levels fire zone. Safety evacuation mainly include evacuation exit arrangement and the design of the smoke prevention stair well. Underground garage is set to a fire zone, three evacuation in fire partition layout on the mouth, aisle width is 1.5 m, two security exit distance is greater than 5 m, as far as the safety evacuation distance of 29.2 m, conform to the specifications. Underground garage on the second floor is set to a fire zone, within the fire compartment layout on the two evacuation mouth, aisle width is 2.5 m, two security exit distance is greater than 5 m, as far as the safety evacuation distance of 29.2 m, conform to the specifications. Stair room door before and for class b fire door.
Objects in the design of fire extinguisher configuration types mainly for class A fires, there E class fire at the same time, the design configuration portable ammonium phosphate powder extinguishers, will be (MF/ABC5), the minimum level of configuration fire for 3 A, portable fire extinguisher maximum protection distance of 15 m, set up 13 of the ground floor of A fire extinguisher placement, setting, 16 fire extinguisher is placed on the second floor underground each place point placed A fire extinguisher.
The design of indoor and outdoor fire hydrant water supply system mainly includes outdoor fire hydrant and indoor fire hydrant system. This design set three outdoor fire hydrant, outdoor fire water consumption of 30 l/s. For indoor fire hydrant system, selects the 65 mm in the design of fire hydrant, 19 mm nozzle of nozzle, the diameter of 65 mm length 25 m line glue tape, enrich the water column length is 12 m, fire hydrant protection radius of 28.1 m, building set up 9 root riser, indoor fire hydrant water consumption of 45.18 L/s, fire water tank is 18 m after effective volume. Fire pool effective volume is 363 m after. The pump head is 76 m, the flow Q = 45.18 L/s. Reason to choose the pump type for XBD10 / dl x5, 40-150 head 90 m and speed 1480 r/min, the efficiency of 76%, 55 kw power, NPSH 3.5 m. Choose two groups of the model pump, in one case, three water pump adapter.