毕业论文关键词: 高层建筑；消防系统设计；安全疏散；消火栓系统

Fire Protection Design of a High - rise Residential Building

Abstract (a brief illustration of the design): designed for a high-rise residential building, building height of 99m, design life of 70 years。

The main contents of this design include: the domestic and foreign high-rise building fire safety status analysis, high-rise building fire design problems, high-rise building fire design and management of the improvement direction; design focus is the total plane fire design, smoke control design, safe evacuation design , Automatic alarm system design, fire hydrant water supply system design, automatic sprinkler system design, fire extinguisher configuration design。

The design object for a class of high-rise civil buildings, fire-resistant level for a。 The distance between the design object and the surrounding building is more than 30m, and the distance between the high-rise buildings is 13m。

According to the structure and nature of the building and the corresponding specifications, the design of each floor area of the project does not exceed the required 1500m2, so the horizontal direction of each floor is pided into a fire partition。 Smoke staircase, fire elevator separate pision of smoke partition, the remaining area each layer pided into two smoke partition。 There are two smoke staircase in the residential building, the pressurized air supply system for the smoke staircase。 Combined with the former chamber pressure air supply is 19126。8m3 / h。

Safe evacuation route for the room → walkway → front room → stairwell。 Each floor is arranged with two safe evacuation entrances and exits, its evacuation walkway, evacuation staircase and the first floor of the outer width of the evacuation of the door is less than 1。1m, in line with regulatory requirements。 The safe evacuation distance from the farthest point to the door is 17。244m <20m, and the distance from the door to the nearest safe evacuation outlet is 10。768m <20m, which conforms to the specification。

The residential building fire alarm system to protect the object level, the use of centralized alarm system, and set fire control room。 Design the use of smoke detectors, detector protection area A = 60m2, protection radius R = 5。8m。 Detector layout number, the first layer of 14, 2 layer 12, 3 to 33 layers of 14 per layer。

Designed for high-end residential, dangerous grade is in the middle of the dangerous class, the fire type is mainly Class A fire, and there are Class E fire (roof machine room)。 Designed to set the ammonium phosphate dry powder portable fire extinguisher (MF / ABC3), the minimum fire extinguisher for each fire extinguishing class is 2A, the maximum protection distance is 20m。 To determine the fire extinguisher set each point 2 4, a total of 136。

Fire hydrant water supply system design and calculation mainly includes outdoor, indoor fire hydrant system of these two parts。 Outdoor fire hydrant water consumption of 40L / s, set the outdoor floor fire hydrant, outdoor fire hydrant spacing 80m, along the building around the completion of a circle to form a loop。 Indoor fire hydrant water supply system is pided into two high and low areas, in order to ensure that the fire hydrant pressure water pressure does not exceed 0。5MPa, indoor fire hydrant water consumption of 40L / s, fire hydrant protection radius of 28。1m, layout spacing 25。6m, total head loss of 0。0633689MPa , The most unfavorable point fire hydrant and fire pool minimum water level between the height difference of 1。016MPa, the most unfavorable point of the fire hydrant working pressure of 0。18925MPa, fire pump required head for the 128m, flow 45L / s, use XBD16 / 40-W ( Horizontal multi-level) model fire pump, one with a prepared。

Automatic sprinkler system selection of wet automatic sprinkler system, in accordance with the norms to determine their belong to the risk of grade Ⅰ。 The design of the square nozzle layout, determine the location of the most unfavorable point of the location and shape of the calculation of the most unfavorable point of the area within the application of the number of 15, the area of 163。35m2。 The total loss of the pipeline is 0。4642MPa, the most unfavorable point of the nozzle working pressure 0。067MPa。