论文总字数：28957字

摘 要

本设计一层至地上三层为市政管网直供，五至十七层为变频泵供水的给水方式。直供部分从市政给水管网接一根DN50的引入管，另两根DN100的引入管接至地下一层生活水池和消防水池。生活水箱采用装配式钢板水箱，消防水池采用砖砌混凝土结构，置于地下室。排水采用生活污、废水合流制。在部分卫生间排水立·换到排水立管后排出室外。屋面雨水排放选择重力式雨水系统，雨水经屋面雨水斗收集后由雨水管排至检查井。 根据规范，该建筑为一类建筑，属中度危险一级。查表得室外消火栓用水量为30L/s，室内消火栓用水量为40 L/s，每根竖管的最小流量是15 L/s，每只水枪的最小流量是5 L/s，火灾延续时间为3h。消防立管管径为DN100、DN150。在顶层设试验消火栓一个，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，报警阀设于地下一层，各层均设水流指示器、末端试水装置和信号阀，其信号均送入消防控制中心进行处理。本工程的自动喷水灭火系统分2个区。

关键词：给水系统、排水系统、消火栓系统、自动喷水灭火系统、雨水系统

Abstract

Design of water supply and drainage for office building of a Public Security Bureau

The design of the first floor to the ground floor for the direct supply of municipal pipe network, five to seventeen layers for the water supply of variable frequency pump water supply mode three. The direct supply section is connected with a DN50 inlet pipe from the municipal water supply network, and the other two DN100 inlet pipes are connected to a living pool and a fire pool on the ground floor. The living water tank adopts an assembly type steel plate water tank, and the fire fighting tank is made of brick concrete structure and is arranged in the basement. The sewage is combined with sewage and wastewater. Ventilation standpipe is set up beside the drainage pipe in some toilets. The pumping station is drained and collected to the ground floor, and the water collection tank is raised to the inspection well by the submersible sewage pump. Then the waste water is discharged into the municipal drain pipe after being treated by a septic tank. Construction of four floors and above the living sewage pipe in the three floor ceiling, the bathroom sewage pipe properly collected, converted to the drainage riser, discharged outdoor. Roof drainage of gravity type drainage systems, rainwater collected from the roof drain rain water pipe row to check well.

According to the standard, the building is a type of building, a moderate danger level. The tables of outdoor fire hydrant water for 30L/s, indoor water hydrant is 40 L/s, the minimum flow of each standpipe is 15 L/s, the minimum flow of each gun is 5 L/s, the fire duration is 3h. Fire riser pipe diameter is DN100, DN150. A fire hydrant is provided at the top, and a button for starting fire pumps is provided in each indoor fire hydrant box.The building adopts wet automatic sprinkler system, the alarm valve is located on the ground floor, each layer is equipped with water indicator, end water test device and signal valve, and their signals are sent into the fire control center for processing. The sprinkler system in this project is divided into 2 zones.

button.Keyword： Water-supply system;Drainage system;Hydrant system;Automatic sprinkler system;Rainwater system

目 录

摘要

第一章 设计说明书

一、给水系统 1

1.1方案比选 2

1.2室内给水系统的组成 2

1.3给水管道的布置与敷设 2

二、消防系统 2

2.1消火栓系统 2

2.1.1消火栓系统的设置场所 2

2.1.2消火栓系统的组成 3

2.1.3消火栓系统的布置 3

2.2自动喷水灭火系统 3

2.2.1自动喷水灭火系统的设置场所 4

2.2.2自动喷水灭火系统的组成 4

2.2.3喷头的选择与布置 4

三、排水系统 5

3.1排水方案的选择 5

3.1.1室外排水方案的确定 5

3.1.2室内排水方案的确定 5

3.2排水管道的安装 6

四、雨水系统 6

4.1雨水排水系统的选择 6

4.2雨水排水系统的组成 6

4.3雨水管道的敷设与布置 6

第二章 设计计算书 7

五、给水系统计算 7

5.1 用水定额和用水量 7

5.2 给水方式 8

5.3设计秒流量确定 8

5.3.1设计依据 9

5.4给水管网水力计算 13

5.4.1给水管网低区计算 14

5.4.2给水管网高区计算 19

5.5 水表的选择 19

5.5.1 总水表的选择................................................................................ 20

5.6 地下室生活泵的选择......................................................................................20

六、消防系统计算...................................................................................................21

6.1消防水池....................................................................................................21

6.1.1消防水池的设置.............................................................................21

6.1.2 体积计算........................................................................................21

6.2 消火栓保护半径........................................................................................21

6.3 消火栓的确定.......................................................................................... 21

6.4 消火栓的水力计算...................................................................................22

6.5 屋顶喷淋消防一体化泵箱......................................................................24

6.6 水泵接合器的选定..................................................................................24

6.7 消火栓减压计算......................................................................................25

七、喷淋系统计算 27

7.1自动喷淋灭火系统的基本数据 27

7.2管道与报警阀布置...................................................................................27

7.3喷头的选用和布置...................................................................................27

7.4系统的设计流量......................................................................................28

7.5水力计算..................................................................................................29

八、排水系统计算.................................................................................................32

8.1横支管计算 33

8.2立管计算 35

8.3化粪池的计算 39

九、雨水系统计算 40

9.1屋面雨水排水方式 40

9.2降雨强度 40

9.3会水面积 40

9.4 设计秒流量 41

9.4.1各立管会水面积 41

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