Construction method of crossing structure for steel pipes to go cross riverway

Abstract

The invention discloses a construction method and structure for steel pipes to go across a riverway. The construction for the steel pipes to go across the riverway is carried out under the condition of guaranteeing the normal flowing state of the riverway. The structure comprises side convex type expansion dams, a pipeline and floating boats, wherein the side convex type expansion dams are arranged on the outer side of an original dam of the riverway, a pipeline ditch for containing the pipeline is formed between the side convex type expansion dams, the pipeline is arranged in the pipeline ditch, at least one prefabricated anchoring pile is punched on each of the two sides of the pipeline ditch in the riverway, and the floating boats are connected with the prefabricated anchoring piles through mooring ropes. According to the construction method and structure for the steel pipes to go across the riverway, the three kinds of floating boats are used for construction on the riverway, a diversion trench and a closure cofferdam do not need to be arranged, construction for the steel pipes to go across the riverway can be conducted under the condition of guaranteeing the normal flowing state of the riverway, and the construction method and structure are suitable for scenes where flowing stop and navigation stop are not allowed in construction.

Description

Technical field[0001]The present invention relates to the technical field of laying pipelines under water, and more specifically to a construction method for a steel pipe crossing a river crossing structure.Background technique[0002]In the construction of various river-crossing and wading buildings and pipelines in existing rivers, it is necessary to carry out cofferdam closure and diversion in order to drain water in the cofferdam, excavate foundation pits, and build pipelines and pipelines in a non-water environment. building. However, during construction, there are occasions when it is not allowed to cut off the flow and navigation. If the pipeline diversion method can only achieve continuous flow, the traditional method to deal with this situation is to adopt staged diversion, usually in two stages, sometimes in three or four stages. When the width of the river bed is not wide, two-stage diversion is generally adopted, half of the river channel is intercepted, the other half is ...

AI Technical Summary

Problems solved by technology

However, this construction method has a long construction period, and the water flow increases and accelerates after the river narrows, which increases the construction risk and shipping risk.

[0003] To sum up, for the problems existing in the construction process of river-crossing and river-wading buildings and pipelines in related technologies, no effective solutions have been proposed so far

Images