小区雨排水设计中对新型材料管道和检查井的应用和注意事项 中英(3)

3 塑料管材和塑料检查井在排水设计中不宜应用的情况

3 plastic pipe and plastic should not be applied in the drainage design of inspection Wells

（一）塑料管材

(a) plastic tubing

在排水中,塑料管虽然具有重量轻、不腐蚀、外壁光滑、容易切割、便于安装、可制成各种颜色、投资省和节能的优点,但塑料管也有强度低、耐温性差(使用温度在-5～+50℃之间)、立管噪声大、暴露于阳光下的管道易老化、防火性能差等缺点,故建筑高度超过100m的高层建筑、对防火等级要求高的建筑物、要求环境安静的场所,环境温度可能出现0℃以下

的场所以及连续排水温度大于40℃或瞬时排水温度大于80℃的排水管道应采用柔性接口机制排水铸铁管,而不用塑料管。对于建筑内雨水管道,规范4.9.26条规定:“1.重力流排水系统多层建筑宜采用建筑排水塑料管,高层建筑宜采用承压塑料管、金属管。2.压力流排水系统宜采用内壁较光滑的带内衬的承压排水铸铁管、承压塑料管和钢塑复合管等,其管材工作压力应大于建筑物净高度产生的静水压力。用于压力流排水的塑料管,其管材抗环变形外压力应大于0.15MPa。3.小区雨水排水系统可选用埋地塑料管、混凝土管或钢筋混凝土管、铸铁管等。”

In drainage, plastic tube is light weight, anti-corrosion, the outer wall is smooth, easy cutting, easy to install, can be made into all kinds of color, the advantages of saving investment and energy saving, but plastic pipe has low intensity, low temperature resistance and using the temperature between 5 ~ + 50 ℃), riser big noise, exposure to sunlight of pipeline aging, poor fireproof performance faults, so the building height of more than 100 m high building, the fire rating of the demands of high buildings, quiet environment, the environment temperature possible places and continuous drainage under 0 ℃ temperature is greater than 40 ℃ temperature greater than 80 ℃ or instantaneous drainage pipes cast iron drainage pipe, flexible interface mechanism should be adopted instead of plastic tube. For building drainage, article 4.9.26 norms: Multi-storey building appropriate USES gravity flow drainage system construction drainage pipes, high-rise building appropriate USES pressure plastic pipe and metal pipe. 2. The pressure flow drainage system appropriate USES the lining is smooth with a lining of pressure cast iron drainage pipe, pressure plastic pipe and inspecting &controlling, the pipe work pressure should be greater than the hydrostatic pressure caused by the net height of buildings. Used for pressure and flow drainage tubes, the tube outer ring deformation resistance pressure should be greater than 0.15 MPa. 3. Residential rainwater drainage system can choose buried plastic pipe, concrete or reinforced concrete pipe, cast iron pipe, etc.

（二）塑料检查井

(2) plastic check well

塑料检查井适用于建设小区（别墅、居住区、科研院所、学校、厂房、大型广场）等。对于重型企业外厂区,例如港口企业室外雨污水检查井,使用钢筋混凝土砖砌井加承重铸铁井盖,可能更加适合。尤其新厂区地势低洼,为了尽快排走雨水,设计上需要采用Φ1000及以上的雨水管,而市场上能接纳Φ600以上塑料雨水管的塑料井筒的生产厂家几乎没有；《建排》第4.5.4生活排水管道不宜在建筑物内设检查井。当必须设置时,应采取密封措施。笔者认为可以采用变通的做法。比如一别墅底层有卫生间,必须采取内排污水检查井的做法,可以用塑料井替代砖砌井,并且在塑料井井盖上设DN50的塑料排水管,埋地、就近沿柱子外包伸顶,接屋面雨水系统。无雨水时,此管做通气用;有雨水时,此管辅助排雨水,让室内污水井不至于干涸。两幢联排别墅,是南北对称的,后院间有一1.6m的院间小路,中间要走雨水和污水管道,在中轴两侧有两个污水检查井,每只井需要同时接纳南北向六根污水管和两根东西向的污水管。单向接纳三根北向（或南向）污水出户支管,是塑料检查井的优势所在,但是此种场合下,施工方更愿意用非标的矩形砖砌井替代圆形检查井。

Plastic is suitable for the construction of residential area of inspection Wells (villa, residential area,

scientific research institutes, schools, factories, large square), etc. For heavy enterprises outside the factory, such as port enterprises outside the rain sewage inspection Wells, and use of reinforced concrete brick shaft and bearing cast iron manhole cover, may be more suitable. Particularly low-lying, for the new site as soon as possible in order to come in the rain, storm sewer design requires Φ 1000 and older, and the market can accept Φ above 600 plastic plastic shaft manufacturers almost no storm sewer; The building row of the first 4.5.4 living drainage pipe should not be in the building internal inspection Wells. When must be set, sealing measures should be taken. The author thinks that can be used in a flexible way of doing. Underlying a villa has a toilet, for example, must take the practice of domestic sewage in inspection Wells, well can use plastic instead of brick, and on the plastic manhole covers well set (plastic drainage pipe, buried, along the pillars near outsourcing and roof, the roof rainwater system. Without rain, use this tube for ventilation; When there is rain, the auxiliary rainwater pipe, let indoor sewage well not dry up. Two townhouse, north-south symmetry, the backyard of a 1.6 m between path between court, intermediate to go rain and sewage pipes, in the central axis on both sides of the two sewage inspection Wells, each well to accept north-south six sewage pipe and two east-west sewage pipe. One-way acceptance of three north (or south) sewage branch pipe, and the homes are plastic check well advantage, but this kind of situation, the more likely to use the quality mark rectangular brick well instead of round check well.

百度搜索“77cn”或“免费范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，免费范文网，提供经典小说英语学习小区雨排水设计中对新型材料管道和检查井的应用和注意事项 中英(3)在线全文阅读。