建筑给水排水工程设计计算说明书

摘要

本设计的主要任务是天津市某高层酒店建筑给水排水工程设计，设计的主要内容包括：建筑给水系统、建筑排水系统、消火栓给水系统和自动喷淋系统的设计。

本建筑地下1层，地上17层，建筑物总高度为66.9m。其中一至四层为非标准层；五至十六层为标准层；十七层为顶层。

市政给水管网常年提供的资用水头为0.30MPa ，经技术经济比较，室内给水系统拟采用分区给水方式。初步拟定该建筑给水系统分二区：一至六层为低区，由市政管网直接供水；七层至十七层为高区，由变频泵供水。

建筑排水系统采用合流制，直接排入下水道。

消火栓给水系统主要为室内消火栓给水系统，消火栓的布置范围包括各楼层、消防电梯前室和屋顶检验用。消火栓保护半径为28m。

建筑内喷头数量约1954个，设3组预作用报警阀，报警阀后管网为枝状网，每层设水流指示器。

关键词：建筑给水系统；排水系统；消火栓系统；自动喷淋系统

I

Abstract

The main task of this design is the water supply and drainage design of a high-rise hotel in Tianjin. The content of my design includes the design of the building water supply system, the building water drainage system, the building storm-water system, the hydrant water supply system and the automatic sprinkler system.

The building has 1 floor underground and 17 floors overground. The height of the building is66.9m.The first to the fourth floor are Non-standard layer; The fifth to the sixteenth are standard layer;The seventeenth is the top.

The municipal water supply piping can provide 0.30Mpa head. After the comparison of technicality and economy, interior water supply system intends to adopt subarea water supply. Preliminary study out that building water supply system is divided two areas: 1～6 floors are low area. The pipe network supplies water directly from municipal water supply piping;7～17 floors are high area. Water supply is supplied by no negative pressure water equipment.

The building water sewerage system adopt confluence .All waste water enter drain via a septic-tank.The building storm-water system adopts inner draining.

Hydrant water supply system includes interior hydrant water supply system and outside hydrant water supply system. Hydrant arranging range includes every storey, the room in front of fire elevator and roof for check. The hydrant protects a radius of 28m.

The number of sprinkler heads in the building is about 1954. The automatic sprinkler system set up 3 groups watery alarm valve. Behind the alarm valve, the piping is set as branch. Every storey set water flow indicator.

Keywords：the building water supply system；water drainage system；hydrant water supply system；the sprinkler system

II

目录

前言 ........................................................................................................................... 1 1 设计概述及设计依据 ........................................................................................... 2 1.1 设计概述 ............................................................................................................ 2 1.1.1 工程概况 ......................................................................................................... 2 1.1.2 设计资料 ......................................................................................................... 2 1.1.3 建筑给水排水工程设计任务 ......................................................................... 2 1.2 设计依据 ............................................................................................................ 3 2 生活给水系统 ....................................................................................................... 4 2.1 系统的组成与选择 ............................................................................................ 4 2.1.1 系统的组成 ..................................................................................................... 4 2.1.2 系统的选择 ..................................................................................................... 4 2.2 给水管道平面布置及管道敷设 ........................................................................ 5 2.2.1 基本要求 ......................................................................................................... 5 2.2.2 布置形式 ......................................................................................................... 7 2.2.3 给水管道的材料 ............................................................................................. 7 2.3 生活给水系统的设计计算 ................................................................................ 8 2.3.1 生活用水量计算 ............................................................................................. 8 2.3.2 给水管网水力计算 ......................................................................................... 9 2.3.3 给水管网的校核 ........................................................................................... 14 2.3.4 生活贮水池容积计算 ................................................................................... 14 2.3.5 水表的计算与选择 ....................................................................................... 15

2.3.6 生活水泵的计算与选择 ............................................................................... 15 2.4 减压设施计算 .................................................................................................. 16 2.5 给水附件 .......................................................................................................... 17 3 建筑室内消火栓给水系统 ................................................................................. 18 3.1 消火栓系统的组成与用水量 .......................................................................... 18 3.1.1 消火栓系统的组成 ....................................................................................... 18 3.1.2 消火栓系统用水量 ....................................................................................... 18 3.2 消火栓系统类型 .............................................................................................. 18 3.3 消火栓系统设备初期选型 .............................................................................. 19 3.3.1水枪充实水柱长度计算 ................................................................................ 19 3.3.2 消火栓的保护半径 ....................................................................................... 20 3.3.3 消火栓的布置间距 ....................................................................................... 20 3.4 消火栓系统给水方式与布置 .......................................................................... 20 3.4.1 消火栓系统给水方式 ................................................................................... 20 3.4.2 消火栓系统的布置 ....................................................................................... 20 3.4.3 消火栓给水管道的材料 ............................................................................... 22 3.5消火栓给水系统设计计算 ............................................................................... 22 3.5.1 水枪喷嘴处所需的水压 ............................................................................... 22 3.5.2 水枪喷嘴的出流量 ....................................................................................... 23 3.3.3 水带水头损失 ............................................................................................... 23 3.5.4 消火栓栓口所需水压 ................................................................................... 24 3.5.5 消防管网水力计算 ....................................................................................... 24

3.5.6 水箱安装高度校核与计算 ........................................................................... 27 3.6 增压设施的计算与选择 .................................................................................. 28 3.7 减压孔板的设计与计算 .................................................................................. 29 3.8 消防贮水池计算 .............................................................................................. 31 3.9 水泵接合器的设计 .......................................................................................... 31 3.10 室外消火栓的设计 ........................................................................................ 32 4 自动喷水灭火给水系统 ..................................................................................... 33 4.1自动喷水灭火系统的一般规定 ....................................................................... 33 4.1.1 自动喷水灭火系统的设计原则应符合以下规定 ....................................... 33 4.2自动喷水灭火系统的使用范围及组成 ........................................................... 33 4.2.1 自动喷水灭火系统的使用范围 ................................................................... 33 4.2.2 自动喷水灭火系统的组 ............................................................................... 34 4.3 自动喷水灭火系统用水量确定 ...................................................................... 34 4.4 自动喷水灭火系统方案确定 .......................................................................... 34 4.4.1 自动喷水灭火系统选型 ............................................................................... 34 4.4.2 喷头的选用 ................................................................................................... 35 4.5自动喷水灭火系统管网布置 ........................................................................... 36 4.5.1 自动喷水灭火管网的布置及安装 ............................................................... 36 4.5.2 自动喷水灭火系统的管材 ........................................................................... 36 4.6 自动喷水灭火系统管网水力计算 .................................................................. 37 4.6.1 管网水力计算（特性系数法） ................................................................... 37 4.6.2 校核管道流速 ............................................................................................... 40

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