Construction method for laying packaged concrete drainage pipelines

Abstract

The invention relates to a construction method for laying concrete drainage pipes. The method comprises the following steps: (1) excavating the pipeline trench; (2) laying pipelines; (3) closed watertest for the pipelines; (4) pouring; (5) carrying out the closed water test and the pouring in sequence according to step 3 and step 4, thus completing the concrete foundation casting construction. Byutilizing the pipeline laying method, the pipeline is located and limited very well. By adopting the method of carrying out closed water test before pouring the pipelines, it overcomes the problems that the hidden trouble is difficult to be solved and the time limit is affected by the failure in continuous operation caused by the closed water test after the expiration of the concrete curing in traditional method. The two-step method utilized to pour the concrete foundation is a solution to the construction accident or quality accident caused by the traditional pouring method.

Description

technical field [0001] The invention relates to the technical field of drainage pipe construction, in particular to a construction method for laying a concrete full-wrapped drainage pipe. Background technique [0002] When the gravity flow drainage pipeline is buried under the vehicle road and the thickness of the pipe top covering soil is less than 0.70m, or when it is arranged on the water surface and the pipe top covering soil is less than 1.0m, for the safety of the pipeline, on the premise that the foundation treatment of the pipeline meets the requirements, It is common practice to use full cladding concrete protection for pipelines. Most of the current construction methods are: in the dug trench, fix the pipeline with steel strips, steel pipes and other materials in place, pour plain concrete down on both sides of the pipeline, and do a closed water test after the concrete curing expires. During the implementation of the above method, the following problems were foun...

AI Technical Summary

Problems solved by technology

[0003] 1. When pouring concrete, due to the fluid characteristics of unsolidified concrete, the pipeline will have a large buoyancy (nearly 2.4 times greater than the buoyancy of water), which makes it difficult for the pipeline to be stabilized in the pipe groove, resulting in steel ropes for fixing the pipeline, Materials such as steel belts and steel pipes come out or break, or damage the pipelines (such as fastening steel ropes, steel belts, cracking plastic pipes, etc.), resulting in construction accidents or quality accidents;

[0004] 2. Since the concrete pouring is completed, if the closed water test finds that the pipeline connection does not meet the requirements of the design and construction specifications, it is difficult to find hidden dangers and effectively repair them;

[0005] 3. After the concrete curing expires, do the water-closed test again, and the continuous operation cannot be performed, which will affect the construction period

Images