Installation method of pipeline bridge crossing canyon

Abstract

The invention relates to an installation method of a pipeline bridge crossing a canyon. The method comprises the steps of 1, surveying and setting-out, wherein a crossing line is determined on a canyon cross section, positions of left and right bridge piers at left and right banks of the canyon are determined, and the left and right bridge piers are located at the crossing line; 2, pouring the left and right bridge piers at the left and right banks of the canyon, wherein pipeline bridge connecting built-in fittings are anchored at the tops of the left and right bridge piers respectively; 3, determining a sending line parallel to the crossing line at the front side or rear side of the crossing line, wherein the center distance between the sending line and the crossing line is 1.2-1.5 folds of the width of the pipeline bridge; 4, manufacturing the pipeline bridge at the left bank of the canyon and mounting a sending device in the middle of the canyon bottom of the canyon, wherein both the pipeline bridge and the sending device are located at the sending line; 5, making the pipeline bridge cross the canyon along the sending line; 6, transferring the pipeline bridge horizontally with a crane to the crossing line and fixing the pipeline bridge on the left and right bridge piers. According to the installation method of the pipeline bridge crossing the canyon, pipeline bridge crossing can be completed in canyon areas where there is no heavy cranes, and the method is short in construction period, low in manufacturing cost and high in safety.

Description

Technical field [0001] The invention relates to a pipeline bridge, in particular to an installation method for a pipeline bridge crossing a canyon, and belongs to the technical field of pipeline bridge construction. Background technique [0002] To cross the canyon, the oil and natural gas pipeline must first install a pipeline bridge across the canyon, and then lay the pipeline along the pipeline bridge. The traditional construction method of the pipeline bridge across the canyon requires scaffolding to be erected along the cross section of the canyon first, and the scaffolding needs to be erected from one side of the canyon to the opposite bank, commonly known as erecting red scaffolding. Then, the pipeline bridge was manufactured and installed on-site on the full house red scaffolding. The welding team worked on all personnel at high altitudes above the canyon, and was assisted by cranes with large lifting capacity for construction. This conventional construction method requir...

AI Technical Summary

Problems solved by technology

Faced with the construction task of pipeline bridges that need to cross both sides of the canyon, if the traditional technology is used for construction, firstly, the construction period is too long, which will affect the overall construction progress of the oil and gas pipeline; secondly, the cost of erecting full house scaffolding is too high; High-altitude operations, poor safety, difficult quality control, and the most critical thing is that it is difficult to find large-scale lifting equipment that meets the requirements on the construction site

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