Casing type water delivery pipeline applied to crossing bridges and its installation and construction method

Abstract

The invention discloses a casing pipe type water conveying pipeline applied to a crossing bridge and an installation and construction method thereof. The construction method comprises the following steps of: step 1. excavating a water conveying pipeline trench; step 2. installing a concrete casing pipe; step 3. backfilling the water conveying pipeline trench; step 4. installing a pressure steel pipe; step 5. filling concrete. A casing pipe type water conveying pipeline comprises the concrete casing pipe, a concrete pouring layer and the pressure steel pipe, wherein the concrete pouring layer is arranged at the outer side of the pressure steel pipe in a sleeving manner; the concrete casing pipe is arranged at the outer side of the concrete pouring layer in a sleeving manner; a supporting device is also connected between the concrete casing pipe and the pressure steel pipe; and steel idler wheels are also fixedly at the bottom of the pressure steel pipe. The construction method has closeworking procedure connection and effectively improves the construction efficiency. The stability of the pressure steel pipe is effectively ensured through the matching of the casing pipe layer structure and the supporting device, so that water is unlikely to seep from the pressure steel pipe.

Description

technical field [0001] The invention relates to the technical field of casing-type water delivery pipeline construction, in particular to a casing-type water delivery pipeline used for crossing bridges and an installation and construction method thereof. Background technique [0002] During the operation of the water pipeline, there will be a small amount of water seepage in the pipe joints of the socket sockets, but the water seepage in the pipe joints for a long time will soften the bearing layer soil of the pile foundation of the lower structure of the railway bridge, which will have an adverse effect on the pile foundation and make the entire building There are great risks in the safe operation of the bridge. According to the nature of the project and the construction characteristics of the pipeline, in order to meet the anti-seepage protection requirements of the pipeline, after the large-scale excavation forms the trench, it is carried out by embedding the prefabricated...

AI Technical Summary

Problems solved by technology

[0005] 1. The plastic hose core tube is combined with the concrete structure layer to form the tube. The consistency of the core tube diameter cannot be guaranteed. In the process of filling the plastic hose with concrete, it is easy to cause the concrete to damage the plastic hose;

[0006] 2. Using plastic hose as the core layer of the pipeline, the inner diameter of the pipeline cannot be made very large, and the core layer does not have the ability to resist pressure;

[0007] 3. Low construction efficiency

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