A Construction Method for Renewing Pipeline Bridge Structure

Abstract

The invention discloses a construction method for updating a pipeline bridge structure. According to the construction method, construction sequences are arranged reasonably, and the principle of gradual lengthening, pulling and dismounting is adopted, so that original structural members of a bridge are replaced by new structural members step by step, and finally the whole bridge is replaced. In the replacement process, normal operation of pipelines carried by the bridge does not need to be interrupted, a temporary support does not need to be arranged under the bridge, and therefore the influence to normal production and life is greatly reduced. The construction method has good social benefits and economic benefits.

Description

technical field [0001] The invention relates to a construction method, in particular to a construction method for updating a pipeline bridge structure. Background technique [0002] The steel truss structure has the advantages of high rigidity, light weight, and material saving, and is often used in projects carrying cables, pipelines and other equipment across rivers and roads. However, the bridge frame of the existing truss structure does not consider the renewal of its own structure in the design. If there is a structural problem during use and the structure needs to be replaced, the only way to replace it is as a whole, that is, first shut down and remove the pipelines carried on the bridge frame, then remove the old bridge structure as a whole, then install a new bridge structure, and finally Reinstall the tubing. The reason for the above-mentioned shortcomings of traditional truss structure bridges is that the bridge structure is usually designed as a whole, includin...

AI Technical Summary

Problems solved by technology

The reason for the above-mentioned shortcomings of traditional truss structure bridges is that the bridge structure is usually designed as a whole, including chords, webs, nodes, transverse tie rods, etc. , resulting in the structure can only be installed and disassembled as a whole

During the overall replacement of the bridge structure, the pipelines on the bridge need to be shut down from beginning to end, which seriously affects normal production activities

Especially for the bridges used to carry cables on the power grid, it is not only extremely difficult to remove a large number of cables during the replacement of the bridge structure, but it will also cause long-term and large-scale power outages, which will have a significant impact on social and economic order.

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