论文总字数：32944字

摘 要

扬州国贸大厦为高层写字楼，该建筑共十六层，建筑总高度为59.1m，一层高3.9m，二层高4.8m，三至十六层均为3.6m。该建筑的北侧、南侧50M处分别有一市政给水管道经过，市政供水最低压力为25M水头，无法满足高层建筑内部用水需求，本设计中办公楼给水系统采取竖向分区供水，充分利用室外给水管网的水压，达到节能减排的目的。供水方案为：一至四层采用市政自来水管网直接供水，五层以上采用变频泵直接供水。

本工程消防给水系统用水由地下消防水泵房供给。消防水池有效容积为370m³，与自动喷水系统合用。本工程消防系统为湿式系统，在建筑屋顶设置消防水箱，供高区消火栓系统初期灭火用水，与喷洒系统合用。消火栓系统不分区，采用两路供水，水平管与竖向管构成环状。本工程地下及地上每层均设自动喷水灭火系统，系统用水由地下消防水泵房供给。消防泵房内设喷洒泵，由湿式报警阀直接控制喷洒水泵启动。本工程自动喷水系统竖向分为两个区：地下一层至五层为低区；六至十六层为高区。

本建筑室内外排水均采用污废合流制，经检查井直接排入市政污水管。采用一层单独排水，二至十六层集中排水。地下室排水经排水沟汇集排至集水坑，经潜污泵提升排至检查井。建筑屋面雨水排水系统采用内排水系统，雨水经屋面雨水斗收集后由雨水立管排入检查井。

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

Yangzhou International Trade building is a high-rise office building, with 16 floors in total. The total height of the building is 59.1m, the first floor is 3.9m high, the second floor is 4.8m high, and the third to the sixteenth floors are 3.6m high. There is a municipal water supply pipeline passing through 50m in the north and south of the building respectively. The minimum pressure of municipal water supply is 25m head, which can not meet the internal water demand of high-rise buildings. In this design, the water supply system of office building adopts vertical district water supply, making full use of the water pressure of outdoor water supply network, so as to achieve the purpose of energy conservation and emission reduction. The water supply scheme is as follows: the municipal tap water pipe network is used for direct water supply from the first to the fourth floor, and the frequency conversion pump is used for direct water supply above the fifth floor.

The fire water supply system of the project is supplied by the underground fire pump house. The effective volume of the fire pool is 370m3, which is shared with the automatic sprinkler system. The fire fighting system of the project is a wet system. The fire water tank is set on the roof of the building to supply fire fighting water for the high-rise fire hydrant system at the initial stage, which is shared with the sprinkler system. The fire hydrant system is not divided into zones, with two water supply channels, and the horizontal pipe and the vertical pipe form a ring. The underground and above ground floors of the project are equipped with automatic sprinkler system, and the system water is supplied by the underground fire pump room. The fire pump room is equipped with two spray pumps, one for use and one for standby, which are directly controlled by the wet alarm valve to start the spray pump. The automatic sprinkler system of the project is vertically divided into two areas: the first to the fifth floor underground is the low area; the sixth to the sixteenth floor are the high area.

The indoor and outdoor drainage of the building adopts the waste water separation system, which is directly discharged into the municipal sewage pipe through the inspection well. Single drainage on the first floor and centralized drainage from the second to the sixteenth floor are adopted. The basement drainage is collected and discharged to the sump through the drainage ditch, and then lifted and discharged to the inspection well by the submersible sewage pump. The roof rainwater drainage system of the building adopts the internal drainage system and the gravity pressure flow system. The rainwater is collected by the roof rainwater bucket and then discharged into the inspection well by the rainwater riser.

Keyword: water-supply system；drainage system；hydrant system；automatic sprinkler system；rainwater system

目录

扬州国贸大厦给排水设计 I

摘要 II

Abstract III

第一部分 设计说明书 1

第一章 设计任务书 1

1.1 工程概况 1

1.2设计任务 1

1.3设计依据 1

第二章 生活给水系统 2

2.1 给水系统方案选择 2

2.1.1给水方式的比较 2

2.1.2给水方式的选择 2

2.2 给水系统的组成 3

2.3给水管道布置与敷设 3

第三章 消防系统 4

3.1消火栓系统 4

3.1.1设计说明 4

3.1.2设计参数 4

3.1.3系统选择及设计 4

3.1.4消火栓给水管道的安装与布置 5

3.2自动喷水灭火系统 5

3.2.1设计说明 5

3.2.2系统选择 5

3.2.3给水方式及系统组成 6

3.2.4喷淋系统的安装 6

第四章 生活排水系统 7

4.1 排水系统的组成及管材 7

4.2 排水管道的布置 7

4.3清扫口、检查口和检查井的设置 8

第五章 雨水排水系统 9

5.1 方案选择 9

5.2系统组成 9

5.3布置与敷设 9

第二部分 设计计算书 10

第六章 生活给水系统计算 10

6.1用水定额及用水量 10

6.1.1给水用水定额及时变化系数 10

6.1.2最高日用水量 10

6.1.3最高日最大时用水量 10

6.2设计秒流量 10

6.3给水系统水力计算 11

6.3.1各卫生器具的流量、当量、连接管管径及最低工作压力 11

6.3.2市政直供水水力计算 11

6.3.3高区供水部分水力计算 14

6.4水表选型 17

6.4.1选型要求 17

6.4.2水表选型及水头损失计算 17

6.5市政直供部分所需压力校核 17

6.6高区设备选型及压力校核 18

6.6.1高区给水系统水压计算 18

6.6.2设备选型 18

6.6.3高区减压阀设置 19

第七章 消火栓给水系统 21

7.1室外消火栓 21

7.2室内消火栓布置 21

7.3消火栓的水压 23

7.3.1水枪喷嘴处所需水压 23

7.3.2水枪喷嘴出水量 23

7.3.3水带阻力 23

7.3.4 消火栓栓口所需水压 24

7.4消火栓系统水力计算 24

7.5 消防泵的选择 27

7.6 消火栓系统减压计算 27

7.7 消防箱配置 28

7.9 水泵接合器 29

7.10消防水池 29

7.11 屋顶消防水箱 31

第八章 自动喷淋系统计算 32

8.1 设计基本数据 32

8.1.1基本参数 32

8.2 喷头和报警阀布置 32

8.3 喷头的选用与布置 33

8.4 系统的设计流量 33

8.5自喷系统水力计算（作用面积法） 34

8.5.1低区水力计算 34

8.5.2高区水力计算 38

8.5.3校核 42

8.6 喷淋泵选型 42

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