摘 要

本设计给水系统一至四层设为低区，由室外给水管网直接供水；五层以上为高区，为变频稳压设备加压供水。直供部分从市政给水管网接两根DN80的引入管，另两根DN80的引入管接至地下一层生活水箱和消防水池。生活水箱为不锈钢生活水箱，消防水池采用砖砌混凝土结构，置于地下一层。排水采用雨污分流，其中首层单独排水，二至十一层集中排水。地下一层收水槽经汇集排至集水坑，经潜污泵提升排至检查井再经过化粪池处理后排入市政污水管。建筑四层以上的生活污水管在三层吊顶内，将各单元生活污水管适当汇集转换到排水立管后排出室外。

由规范已知，该建筑为二类建筑，属中度危险Ⅱ级。室内消防流量15L/s，室外消火栓用水量40L/s，火灾延续时间2h。水带长度取25m，水枪喷嘴流量5.2L/s，消防立管管径为DN100。每层均设消火栓，屋顶设置试验消火栓一个，每个室内消火栓箱内均设有远距离启动消防泵的按钮。

该建筑采用湿式自动喷淋灭火系统，其中，报警阀设于地下一层，各层均

设水流指示器和信号阀，其信号均送入消防控制中心进行处理。各层均设自动喷淋系统，各层均设末端试水装置以及放空管。本工程的自动喷水灭火系统分三个区，地下一层至二层为一区，三层至六层为二区，七层以上为三区。屋顶消防水箱体积为18立方米，贮存有10min消防系统用水量。自动喷水灭火系统和消火栓系统的初期灭火由水箱供水，后期由地下室的消防水泵和自喷泵供水，后期用水由地下一层的消防水池提供，其有效容积为488m³。

雨水排水系统采用重力流系统，采用内排水体制，屋顶层以上的雨水排入屋顶并计入屋顶汇水面积，沿屋顶雨水斗排入雨水立管，再经流出管进入雨水检查井，排入雨水市政管网。

关键词:给水系统 排水系统 消火栓系统 自动喷水灭火系统

Abstract

In this design, the first to fourth layers of the water supply system are set as low areas, which are supplied directly by the outdoor water supply network, and above five layers are the high areas, which are pressurized water supply for the frequency conversion and steady pressure equipment. The direct supply part is connected with two DN80 introduction pipes from the municipal water supply network, and the other two DN80 introduction pipes are connected to the underground water tank and fire tank. The water tank is stainless steel tank, and the fire tank is made of brick concrete structure and placed on the ground floor. The drainage is separated by rain and sewage, the first layer is separately drained, and the two to eleven floors are centralized drained. The collection tank in the ground floor is collected and discharged to the catchment pit, then lifted to the inspection well by a submersible sewage pump, then treated by a septic tank and then discharged into the municipal administration. Sewer pipe The domestic sewage pipes above the four floors of the building are located on the top of the three floors, and each unit of the domestic sewage pipes is properly collected and converted to the drainage risers and then discharged outdoors.

Known from the code, the building is a Class II building, which is of medium hazard class II. Indoor fire flow 15 L / s, outdoor hydrant 40 L / s, fire duration 2 h. The length of the hose is 25m, the flow rate of the nozzle is 5.2 L / s, and the diameter of the fire riser is DN100. Each floor is equipped with fire hydrants, the roof is equipped with a test hydrant, each indoor hydrant box is equipped with remote fire pump start button.

The building uses a wet automatic sprinkler system, in which alarm valves are located on the first floor of the ground floor.

Water flow indicator and signal valve, their signals are sent to the fire control center for processing. Each layer is equipped with automatic sprinkler system, each layer is equipped with terminal water test device and emptying pipe. The automatic sprinkler system of this project is divided into three areas: one area from the first to the second underground, two zones from the third to the sixth floor, and three zones above the seventh floor. Roof fire tank volume of 18 cubic meters, storage 10min fire system water consumption. The initial fire extinguishing system and hydrant system of automatic sprinkler system are supplied by water tank, later by fire water pump and self-jet pump in basement, and later water is supplied by fire tank on the first floor of the ground, with an effective volume of 488m³.

The Rain Water drainage system adopts the gravity flow system and the internal drainage system. The Rain Water above the roof layer is discharged into the roof and counted into the roof water catchment area. The Rain Water riser is discharged along the roof Rain Water bucket, and then through the outflow pipe into the Rain Water inspection well. Discharge into Rain Water municipal pipe network.

Key words: water supply system, drainage system, fire hydrant system, automatic sprinkler system, fire extinguishing system

目录

摘要…………………………………………………………………1……Abstract……………………………………………………………………2

第一章 建筑给排水工程设计任务书……………………………………6

1.1工程概况………………………………………………………………6

1.2设计依据………………………………………………………………6

第二章 给排水设计说明…………………………………………………6

2.1建筑给水系统设计……………………………………………………6

2.1.1给水系统选择………………………………………………………6

2.1.2 给水系统组成………………………………………………………7

2.1.3 给水管道布置与敷设………………………………………………7

2.2建筑排水系统设计……………………………………………………8

2.2.1排水方式……………………………………………………………8

2.2.2排水系统的组成……………………………………………………8

2.2.3通气管的选择………………………………………………………8

2.2.4 排水管道布置及设备安装要求……………………………………9

2.2.5清扫口、检查口的设置……………………………………………9

2.3室内消火栓给水系统设计……………………………………………9

2.3.1 室内消火栓给水系统的设置原则…………………………………9

2.3.2 消火栓给水系统的组成……………………………………………9

2.3.3 消火栓给水方式…………………………………………………10

2.3.4 室内消火栓给水系统的选择……………………………………10

2.3.5 消火栓的布置……………………………………………………10

2.4建筑自动喷水灭火系统设计………………………………………10

2.4.1室内自动喷水灭火系统的选择……………………………………10

2.4.2自动喷水灭火系统的组成………………………………………11

2.4.3喷头的布置与选用………………………………………………11

2.4.4自动喷水灭火系统管材选择……………………………………11

2.5雨水排水系统设计…………………………………………………11

2.5.1雨水排水系统的选择……………………………………………11

2.5.2雨水管材和雨水斗选择…………………………………………11

第三章 设计计算说明书………………………………………………11

3.1给水系统……………………………………………………………11

3.1.1室内给水系统的计算……………………………………………11

3.1.2生活水箱有效容积计算……………………………………………12

3.1.3水力计算…………………………………………………………12

3.2排水系统……………………………………………………………26

3.2.1设计秒流量………………………………………………………27

3.2.2排水横管坡度及最大设计充满度………………………………28

3.2.3最小管径…………………………………………………………29

3.2.4排水管道水力计算…………………………………………………29

3.2.5 排水泵……………………………………………………………33

3.2.6集水坑………………………………………………………………35

3.2.7化粪池……………………………………………………………35

3.3消火栓系统…………………………………………………………35

3.3.1消火栓的布置……………………………………………………35

3.3.2水枪喷嘴处所需水压……………………………………………35

3.3.3水枪喷嘴的出流量………………………………………………35

3.3.4水带阻力…………………………………………………………35

3.3.5消火栓出口所需水压……………………………………………35

3.3.6消防水箱体积计算………………………………………………35

3.3.7消防水池体积计算………………………………………………36

3.3.8水力计算…………………………………………………………37

3.3.9水泵接合器选型…………………………………………………38

3.3.10减压孔板计算…………………………………………………38

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