Construction structure and construction method of water supply and drainage pipeline passing through railway bridge

Abstract

The invention provides a construction structure for a water supply and drainage pipe to pass through a railway bridge, comprising a casing, a water supply and drainage pipe is arranged in the casing, a mortar layer is filled between the water supply and drainage pipe and the casing; the bottom of the inner cavity of the casing is provided with a support The track, the inner wall of the sleeve is provided with a guide column, the outer wall of the water supply and drainage pipe is provided with a plurality of support frames, the outer circumferential surface of the support frame is slidably matched with the inner wall of the sleeve, and the bottom of the support frame is provided with a support track. The edge of the support frame is provided with a plurality of guide grooves, and each guide groove is slidably matched with a guide column; each support frame is provided with a positioning hole for the pouring pipe to pass through. It also provides a construction method for the water supply and drainage pipes to pass through the railway bridge. The support frame of the present invention divides the space between the casing and the water supply and drainage pipes into a plurality of pouring sections, and the mortar can be poured in sections to ensure that each pouring section is filled with mortar and ensure the performance of preventing water leakage.

Description

technical field [0001] The invention relates to the technical field of drainage pipeline construction, in particular to a construction structure of a water supply and drainage pipeline passing through a railway bridge and a construction method thereof. Background technique [0002] Under the railway bridge, the impact of precipitation and pipeline leakage on the foundation should be avoided. According to the provisions of Article 10.0.6 of the Technical Regulations for Highway and Municipal Engineering Underpassing High-speed Railway (TB 10182-2017), the pipeline can be used in the high-speed railway affected area. The casing should be worn down in a way of protecting the casing, and the casing and the pipeline should be filled with sand and grouting to prevent the water flow from affecting the strength of the railway bridge foundation when the pipe bursts and leaks. [0003] Since the casing and the water supply and drainage pipes are set horizontally, when grouting between...

AI Technical Summary

Problems solved by technology

[0003] Since the casing and the water supply and drainage pipes are arranged horizontally, when grouting between the casing and the water supply and drainage pipes, the fluidity of the mortar is better, and it is difficult to fill the space at the top of the outer pipe, resulting in insufficient mortar filling and possible gaps , the waterproof effect is poor. When the water supply and drainage pipe leaks, the water will easily flow out of the casing, which will affect the safety of the railway bridge.

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