给水排水工程专业
毕 业 设 计 计 算 书
姓 名： 陈晨 专业班级： 给水排水工程1202班 学 号： 1204030223
二〇一六年四月
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目 录
摘 要 ............................................................................................................................ 4 第一章 工程概况 ........................................................................................................ 7
1.1：设计题目： .................................................................................................... 7 1.2：目的和作用： ................................................................................................ 7 1.3：设计任务 ........................................................................................................ 7 1.4 设计要求 .......................................................................................................... 7 第二章 设计原始资料 ................................................................................................ 9
2.1： 环境条件 ...................................................................................................... 9 2.2：建筑物使用情况 ............................................................................................ 9 第三章 设计说明书 .................................................................................................. 10
3.1 室内给水、热水设计说明 ............................................................................ 10
3.1.1生活给水系统组成 ............................................................................... 10 3.1.2给水方式种类 ....................................................................................... 10 3.1.3给水方式选择原则 ............................................................................... 11 3.1.4给水管道布置与敷设 ........................................................................... 12 3.2室内消防设计说明 ......................................................................................... 13
3.2.1消火栓给水系统组成和类型 ............................................................... 13 3.2.2消火栓给水系统布置的原则 ............................................................... 15 3.2.3消火栓间距计算 ................................................................................... 16 3.3排水系统设计说明 ......................................................................................... 17
3.3.1排水系统组成 ....................................................................................... 17 3.3.2排水管材与附件 ................................................................................... 17 3.3.3排水系统选择与管道布置敷设 ........................................................... 18 3.3.4通气系统的布置与敷设 ....................................................................... 19
第四章 设计计算 ........................................................................................................ 21
4.1：室内给水系统的计算 .................................................................................. 21
4.1.1：用水定额取值 .................................................................................... 21 4.1.2：竖向分区 ............................................................................................ 21 4.1.3：室内给水管网水力计算方法 ............................................................ 21
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4.1.4：高区给水管网水力计算 .................................................................... 22 4.1.5：低区给水管网水力计算 .................................................................... 28 4.2：消防系统计算 .............................................................................................. 35
4.2.1：消火栓系统 ........................................................................................ 35 4.2.2：消防管道系统计算 ............................................................................ 35 4.3自动喷淋系统 ................................................................................................. 37
4.3.1自动喷洒灭火系统布置原则 ............................................................... 37 4.3.2自动喷洒灭火系统设计参数选择 ....................................................... 39 4.3.3自动喷洒灭火系统计算 ....................................................................... 40 4.4. 消防水池、水箱计算 ................................................................................... 45 4.5排水系统设计 ................................................................................................. 47
4.5.1排水系统组成 ....................................................................................... 47 4.5.2排水管材与附件 ................................................................................... 47 4.5.3排水系统选择与管道布置敷设 ........................................................... 48 4.5.4排水系统水力计算 ............................................................................... 50 4.5.5化粪池计算 ........................................................................................... 55 4.6雨水排水系统的计算 ..................................................................................... 56
4.6.1 .设计暴雨强度 ...................................................................................... 56 4.6.2 . 汇水面积 ............................................................................................ 56 4.6.3 . 水力计算 ............................................................................................ 56
第五章 图纸设计说明 ................................................................................................ 58 参考文献 ...................................................................................................................... 63 致 谢 ...................................................................................................................... 64
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摘 要
本项目为西安市盛业住宅项目3#地块建设项目。项目共包含6栋楼（6~11#楼）及其地下车库部分，其中6~8#楼属于一类住宅楼，9~11#楼均属于一类商住楼。消防水池设置于11#楼顶。
本项目为7#楼，设有生活给水系统、生活污水系统、生活废水系统、雨水系统、消火栓给水系统、自动喷淋灭火系统。
消防系统：本项目地下车库设置生活水箱与水泵间一座，供给住宅小区用水。本期工程室内消火栓系统设计流量为40L/S，按照2个小时火灾延续时间计算储水量，室外消火栓系统用设计流量30L/S，按照2个小时火灾延续时间计算储水量，本建筑高约为76.80m，是超过七层的居民住宅楼，应在楼内设置室内消火栓给水系统，且无需分区。水箱由生活泵补水，贮存10min 的消防用水量，火灾初期由水箱供水灭火，消防水泵启动后由消防水泵供水灭火。此外，宜在平屋顶上设置试验和检查用的消火栓。自动喷淋系统设计流量40L/S，按照1个小时火灾延续时间计算出水量，根据规范本建筑为高级住宅，为一类建筑中属于危险一级，所以设计喷水强度为106L/min?㎡，作用面积为160㎡，喷头作用压力为0.1MPa。消防水池与消防水泵设置于7#楼地下一层，根据本期实际设置相应高区消防给水环网和减压阀后低区消防给水环网，供给相应的单体及地下车库消防给水系统。
给水系统：本工程给水系统市政供水压力约为0.1MPa，仅满足一层用水要求。故考虑二次加压。经经济技术比较，采用分区给水方式供水，由水泵变压供水，该方式供水可靠，设备集中，便于管理。设计1~15层为低区，16~25层为高区，该建筑的给水系统由引入管，水表节点，给水管道，配水装置，用水设备，给水附件，增压和贮水设备组成。
热水系统：本建筑设计每户自备热水。
排水系统：生活污废水采用污废合流排水管道系统。地面以上为重力流排放，本工程无有毒有害污废水排出。污水经室外排水管道收集后，经化粪池处理后，排入市政污水管道。
雨水排水系统：雨水的排放是利用屋顶的坡度，将雨水收集到雨水管口，通过雨水管排除。本建筑采用外排水系统。 关键词：住宅楼 给排水 消防 设计 计算
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Abstract
This project is the construction project of 3# block in Xi'an city. The project consists of 6 buildings (6~11# building) and its underground garage section, which belongs to a class of residential buildings 9~11#, 6~8# floor, are a class of commercial and residential buildings. The fire pool is set up on the top of 11#.
This project is a building of the 7#. With the drinking water system, sewage system, sewage system, drainage system, fire hydrant water supply system, automatic sprinkler fire extinguishing system.
Fire protection system: this project underground garage sets the life water tank and the water pump. The indoor fire hydrant system design flow for 40L/S. According to 2 hours fire duration calculation of water storage, outdoor fire hydrant system design flow 30L/S. According to 2 hours fire continued time calculation of water storage, the building about 76.80m, is more than seven storey residential buildings, indoor hydrant water supply system is set up in the building and without partition. Water tank by the life of the pump water, storage 10min fire water, fire early by the water tank fire, fire pump started by the fire pump water supply fire. In addition, it should set the test and inspection of the fire hydrant on the flat roof. Automatic sprinkler system design flow 40L/S. According to one hour fire duration calculated water. According to the specification of the building for senior housing, for a class of construction belongs to the dangerous level, so the design spray intensity - square meters 106L/min. Area of effect for 160 square meters, nozzle pressure is 0.1MPa. Pool fire and fire pump set in 7# floor, the ground floor of a layer of, according to the actual set corresponding high fire water ring network and pressure reducing valve after the low area fire water ring network, supply the corresponding monomer and underground garage fire water supply system.
Water supply system: the water supply system of this project is about 0.1MPa, which only meets the requirement of one layer of water. So consider two times of pressure. By economic and technical comparison, the use of water supply by way of district water supply, pressure swing by the pump water supply, the way of reliable water supply, centralized equipment, easy to manage. Design 1-15 layer for low area,
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