Construction method of municipal drainage culvert sinking trough

Abstract

The invention provides a construction method of municipal drainage culvert sinking trough. The construction method comprises the following steps: manufacturing a groove-type culvert prefabricated part with a cutting foot at the lower part by adopting the ground or semi-underground cast-in-place segmental method on the construction line of municipal drainage culvert; excavating earthwork in the cutting foot which is at the lower part of the groove-type culvert prefabricated part; sinking the earthwork to a predetermined depth by the own gravity of the groove-type culvert prefabricated part or by external force; manufacturing a culvert base plate by the cast-in-place method between the cutting feet which are at the lower part of the groove-type culvert prefabricated part; backfilling to the height of the original ground surface or road surface with sediments outside the groove-type culvert prefabricated part. Compared with the prior art, the construction technology has the advantages of high rigidity, strong safety, little influence on adjacent buildings and various pipes; the invention further has the advantages that little precipitation and displacement occur on the earth surface; the solidity and durability are better than that of open municipal drainage pipeline construction, and the invention overcomes various drawbacks that the current drainage pipelines with major diameters are not easy to manufacture, transport and construct and are easy to leak.

Description

technical field [0001] The invention relates to a construction method of an urban construction project, in particular to a construction method of a sinking trough of a municipal drainage culvert. Background technique [0002] In the urban road widening and reconstruction project, the original pipeline has been reconstructed and expanded many times, and there are many professional pipelines, including rainwater, sewage, electricity, heat, tap water, natural gas, weak electricity, traffic police signal and other pipelines. Some new pipelines in the reconstruction project need to be laid Rebuild on the original pipeline position, and there are other pipelines nearby. During the construction, it is necessary to consider not only the cross construction with the overpass, but also the traffic problem. The safety of the surrounding pipelines cannot be guaranteed, and the construction cost is increased at the same time, and the construction period cannot be guaranteed. The construc...

AI Technical Summary

Problems solved by technology

In the ground road construction task undertaken by Jinan Urban Construction Engineering Company, the rainwater project on the west side of the road was originally designed as a 2m×2m stone rainwater culvert with a total length of 716m. Due to the high-voltage power poles, overhead telecommunications, street light poles, and water pipelines on the east side of the ditch , some pipelines and poles are 1m below the edge of the rainwater ditch, and the sewage and heat pipelines on the west side are also very close to the rainwater ditch. Although support measures were taken during the construction process, due to poor soil quality and high water level, landslides It still happened many times, causing the tap water pipeline to shift and leak, posing a safety hazard; if steel sheet piles are used for support, the cost is high, the surrounding working surface is small, and there are various overhead lines above, the equipment cannot enter the site for construction, and the progress of the project is slow

Due to the influence of pipelines and utility poles on both sides, most of the working face is less than 3.6m wide. The excavation of the original 2m×2m stone rainwater culvert requires a working width of more than 4m. If the demolition takes time and the cost of demolition is extremely high, it is necessary to study a new construction method In order to make the project run smoothly

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