雨水管道安装技术交底记录.doc

交底内容：
1、本工程管道施工采用垫块法。
2、沟槽开挖完毕后，进行槽底整平夯实，若有地下水，则铺一层12cm后的毛石垫层并砂浆灌缝。
3、槽底整平后，用经纬仪定出管线的中心线，并打下控制桩。控制桩间距不得大于15m。
3、在控制桩上测放高程，挂双线施工，顶线用以控制高程，侧线用以控制直顺度。
4、雨水管道为钢筋砼承插接口，内径为D400，施工时采用人工下管。
5、管道对接时，大口应朝向上游，并将承插口表面清理干净。
6、管道对接后，调节接口的环向间隙，使之均匀。并检查管道的高程及直顺度，符合设计要求，方可进行管道的接口工作。
7、承插口结构如下图所示：

8、填塞砂浆采用干硬性1:1水泥砂浆，三角灰抹口砂浆采用1:2.5水泥砂浆。
9、砂浆应填塞密实，首先在承口底部垫一层砂浆，然后将插口插入，填塞干硬性水泥砂浆，并用木条捣实，管节间隙内捣实后，外部抹三角带。
10、接口施工完毕后，应注意管节接口的养生，用草袋覆盖并洒水，不得出现裂缝现象。
11、沟槽安装完毕后，再浇筑管道基础。

Cards on the table contents:
1, the project pipeline construction method using pads.
2, after the trench excavation, carried out the entire bottom level compaction, if ground water, then a layer of 12cm cushion after the rubble and mortar pouring.
3, bottom, after leveling, using theodolite set the pipeline centerline, and lay the control pile. Control the spacing between piles shall not be greater than 15m.
3, measured at the control post on the release elevation, linked to two-lane construction, the top line to control the elevation, lateral line straight for the control of smooth degree.
4 rain for the reinforced concrete pipe socket interface, inner diameter D400, under the control of artificial construction.
5, pipe butt, the big mouth and should be directed to the upstream and the surface bearing socket clean.
6, pipe butt, the adjustment ring interface to the gap, so that uniform. And check the height and straight along the pipeline degree, meet the design requirements before proceeding to the work pipeline interface.
7, bearing socket structure as shown below:

8, packing mortar 1:1 cement mortar with dry hard, triangular gray wipe mouth with 1:2.5 cement mortar.
9, mortar should be dense packing, the first pad in the socket at the bottom of a layer of mortar, and then jack insert, packing dry hard cement mortar, and with a wooden tamping, tamping tube section inside the gap, the external wipe belt.
10, interface construction has been completed, should pay attention to health management section of the interface, covered with straw bags and watering, no cracks in the phenomenon.
11, trench after installation, and then pouring channel basis.