论文总字数：53816字

摘 要

本次工程设计是常州市某高层办公楼建筑给排水设计，主要任务包括生活给水系统、消火栓系统、自动喷水灭火系统、排水系统和屋面雨水排水系统五个系统的设计计算。

生活给水系统采用分区供水，一层到三层采用市政管网直供。办公塔楼四层到十六层采用上行下给的供水方式，由安装在地下一层水泵房的变频加压泵供水。建筑室内排水采用污废合流制排水，通气系统采用专用通气立管，排水横管隔层安装于吊顶之下，接至排水立管，一层卫生间单独排水出户，污废水经出户横管排至室外污水检查井。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。屋面雨水排水系统则采用内排水系统，重力流排水，屋面雨水经天沟汇集，通过雨水斗、雨水横立管排至室外雨水检查井。

本办公楼属于一类公共建筑，地上部分建筑高度99.8m，消火栓系统采用设高位消防水箱的临时高压系统，并采用分区供水。地下二层到地上七层为加压低区（减压区），通过安装于地下二层的消防专用水泵机组加压后，经减压阀组减压后供水；八层到十六层为加压高区，通过消防专用水泵机组经高区管网直接供水。高位消防水箱设置于东面办公塔楼楼顶，保证消防系统内一定压力，用于火灾初期的供水，并在出水管上安装流量开关，当消防水箱开始为消防系统供水时，能及时通知消防控制室。

自动喷水灭火系统采用湿式系统，地上部分火灾危险等级为中危险Ⅱ级，地下部分为中危险Ⅰ级。采用分区供水，地下二层到地上六层为加压低区（减压区），七层到十六层为加压高区，供水方式于消火栓系统相同。各防火分区均设水流指示器、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，低区的报警阀组统一安装在地下二层消防泵房内，方便维护和管理，高区则安装于水井中。

关键词：办公楼建筑给水排水；生活给水排水系统；消火栓系统；自动喷水灭火系统

Building water supply and drainage design of Changzhou a high-rise office building

Abstract：

The engineering is the water supply and drainage design of a high-rise office building in Changzhou City.The main tasks include the design and calculation of five systems for living water supply systems,fire hydrant systems,automatic sprinkler systems,drainage systems and roof stormwater drainage systems.

Life water supply system using partition water supply,one to three floors using municipal pipe network direct supply.Office tower four to sixteen floors of water supply under the way,by the installation of a layer of water pump room under the variable frequency pump water supply.In the indoor drainage of the building,the ventilation system is equipped with a special ventilation riser,and the drainage horizontal pipe is installed under the ceiling,connected to the drainage riser,and the toilet is drained separately.Discharged to the outdoor sewage inspection wells.Rainwater drainage system is used within the drainage system,gravity drainage,roof rainwater through the gutter pool,through the rain bucket,rainwater horizontal pipe row to the outdoor rain water inspection wells.

The office building is a first class of public buildings,the ground part of the building height of 99.8m,fire hydrant system using temporary high-pressure system of setting up high-level fire water tank,and the use of district water supply.The second floor of the ground to the ground seven floors are the pressurized low area(decompression area),through the installation of the second floor of the fire pump dedicated pump unit,the pressure relief valve group after the water supply.Eight to sixteen floors are the pressurized high area,through the fire dedicated pump unit by the high water pipe network direct water supply.High fire tank installed the roof of office tower in the east,to ensure that the fire system within a certain pressure for the initial fire water supply,and installed flow switch on the outlet pipe,when the fire tank began to fire the water supply system,can promptly notify the fire control room.

Automatic sprinkler system using wet system,the ground part of the fire hazard level for the riskⅡlevel,the underground part of the risk levelⅠ.It uses the partition of water supply,the ground floor to the ground six floors are the pressurized low area(decompression zone),seven to sixteen floors are the pressurized high area,the same way in the fire hydrant system.Each fire zone is equipped with water flow indicator,the end of the test water device and signal valve,the signal are sent to the fire control center for processing.Low area alarm valve group installed in the second floor of the fire room,easy maintenance and management,high area is installed in the wells.

Keywords:office building water supply and drainage;living water supply and drainage system;fire hydrant system;automatic sprinkler system

目录

第一章、工程概况 1

1.1建筑基本概况 1

1.2自然条件 1

1.3、给水水源 1

1.4、排水条件 1

1.5、工程设计内容 1

第二章、建筑给水系统设计计算 3

2.1、给水系统竖向分区 3

2.2、生活用水量计算 3

2.3、给水方案确定 4

2.3.1给水方式确定 4

2.3.2给水竖向分区优化 5

2.4、生活水箱容积计算 5

2.5、管道的布置与敷设 6

2.6、给水管网水力计算 6

2.6.1设计秒流量公式选用 6

2.6.2 水表的选用与计算 7

2.6.3 低区1-3层生活给水管网水力计算 7

2.6.4高区1-3层生活给水管网水力计算 14

2.7设备的计算与选择 19

2.7.1水泵流量、扬程计算和选择 19

2.7.2减压阀计算 21

第三章、建筑消防系统设计计算 24

3.1、室内消火栓系统 24

3.1.1、高层建筑消防给水系统技术参数确定 24

3.1.2、室内消火栓布置间距 26

3.1.3最不利点的消火栓栓口所需压力与水枪的实际喷水流量 27

3.1.4、消火栓系统计算草图 29

3.1.5、消火栓高区给水系统水力计算 29

3.1.6、消火栓低区（减压区）给水系统水力计算 34

3.1.6、消火栓减压装置 35

3.2、自动喷水灭火系统 37

3.2.1、自动喷水灭火系统的设置场所和危险等级确定 37

3.2.2、自动喷水灭火系统的设计参数确定 37

3.2.3、自动喷水灭火系统组成及组件 38

3.2.4、自动喷水灭火系统高区水力计算 42

3.2.5、自动喷水灭火系统减压区水力计算 49

3.2.5、自动喷水灭火系统减压措施计算 51

3.3、固定消防炮灭火系统 55

3.3.1 设置说明 55

3.3.2设备选型 55

3.4、消防水箱和消防水池容积计算 55

3.4.1高位消防水箱贮水量计算 55

3.4.2 消防水池贮水量计算 56

3.5、室外消防给水系统 57

3.5.1 室外消防给水水源 57

3.5.2 室外消防给水管网 57

3.5.3 室外消火栓 57

3.5.4 消防水泵接合器 57

3.5.5 室外消防水泵 58

第四章、建筑内部排水设计计算 59

4.1排水系统的设计说明 59

4.1.1排水系统选择 59

4.1.2排水系统组成 59

4.1.3排水系统的管材 60

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