摘 要
22層辦公樓，位于杭州市：一類高層建筑， 地下二層，地上22層。建筑面積:28459平方米，其中地下部分面積:10112平方米,地上部分面積:18347平方米. 建筑總高度94.14m,室內設置給水系統，排水系統，設集中供熱水系統，消火栓系統和自動噴淋滅火系統。由于該建筑高度94.14米，市政管網壓力0.3MPa,無法滿足壓力要求，故采用分區供水，考慮到節能設計，采用無負壓裝置變頻泵機組。給水分區為高、中、低區，15~22層為高區,4~14層為中區，地下二層~3層為低區。中區、高區由無負壓裝置供水，低區利用市政管網直接供水。排水采用污廢水分流的方式，污、廢水重力自流排入室外污廢水管道。該建筑物高度低于100米，消防系統不分區，采用減壓穩壓消火栓。本樓屋頂設置18噸消防水箱，儲存前十分鐘消火栓用水量，自噴系統采用中危二級標準，分區同冷水給水，正常壓力為0.1MPa,作用面積為160平方米。自噴系統與消火栓系統合用消防水箱。雨水系統采用內排水。
關鍵詞：22層辦公樓；給水；排水；熱水；消防；自噴；雨水
The Design of 22nd floor Office building
Abstract
22nd floor office building，In hangzhou：the first class of high-rise buildings, there are 2 basement and 22 floors overground . Floor area:28459m2, the area of the underground parts:10112 m2, the area of the overground parts:18347 m2.Total building height of 94.14m,indoor setting water supply system,drainage system,water based heating system,fire hydrant system and the automatic sprinkler system.As the building height is 94.14m,municipal pipe network pressure is 0.3Mpa,the pressure can’t meet the requirements,we adopted the regional water supply,taking into account the energy-saving design,with no negative pressure unit pump-unit. Water Supply Division for the high, medium, low area:15 to 22 floors is high zone, 4 to 14 layers for the medium zone, the 2nd underground layer to 3 layers is low zone. In the area, no negative pressure device by the high area and medium of water supply, low-area pipeline direct use of municipal water supply. Drainage diversion by way of sewage waste water, sewage, waste water discharged into the outdoor water and wastewater gravity gravity pipeline. The building height less than 100 meters, fire system does not partition, using vacuum regulator fire hydrant. 18 tons of the floor, the roof setting fire water tank, store ten minutes before the fire hydrant water, in danger from the spraying system uses secondary standards in crisis, area with cold water, normal pressure is 0.1MPa, the effect size is 160 m2. The spray system and hydrant system share fire water tank. Stormwater drainage system is use within the drainage.
Keywords：22 floor office building; water supply; drainage; water; fire; from spray; rain.
