Construction method for laying gas pipelines along bridge
A technology for gas pipelines and construction methods, which is applied in the directions of pipeline laying and maintenance, mechanical equipment, pipes/pipe joints/fittings, etc., can solve the problem of difficulty in safe maintenance of pipelines, and achieves simple construction methods, reduced construction difficulty, and guaranteed safety and reliability. Integrity effect
Active Publication Date: 2014-11-12
浙江国联设备工程有限公司
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Problems solved by technology
For example, truss laying and arch pipe laying are basically not used because they affect the urban landscape; and large excavation trench buried pipe crossing and directional drilling crossing construction methods are not the first choice in the process of gas use due to the difficulty of pipeline safety maintenance and other reasons. Construction method
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[0081]Example: Tonglu Gas Project across the Fuchun River Bridge
[0082] This project is a bridge crossing pipeline across the Fuchun River Bridge: the total length of the pipeline is more than 700 meters, and there are 114 supports and hangers in total. Strengthened double-layer fusion-bonded epoxy powder anti-corrosion is done in the manufacturing plant. The pipeline is erected along the east side of the auxiliary bridges on the north and south sides to the main bridge, turned down through the bottom of the bridge, and then erected underground along the sidewalk on the west side of the main bridge. The two ends of the pipeline are turned down along the auxiliary bridge and connected to the buried pipe. The project was constructed using this construction method, which saved the cost of auxiliary facilities by 500,000 yuan, and the construction period was advanced by 30 days.
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The invention discloses a construction method for laying gas pipelines along a bridge, and belongs to the technical field of building operations. The construction method comprises the steps of manufacturing and installing of an upper pipe operating platform, installing of a movable type lower hanging trolley operating platform, erecting of a bridge hole channel, installing of combined pulleys, detecting of the position of steel bars, punching, pre-manufacturing, installing of main bridge hanging frame idler wheels, lifting of pipelines, welding, pulling and installing of bend pipes, installing of supporting hanging frames, corrosion preventing, pressure testing, blowing and sweeping and the like. Engineering construction on a bridge surface is changed to under the bridge, road blocking due to long time construction of the bridge surface is avoided, serious influence on city traffic is eliminated, and reliable decision basis and technical indexes are provided for planning and construction in city bridge-crossing-pipe engineering under the same circumstance later on. Compared with similar bridge-crossing-pipe engineering, the construction method for laying the gas pipelines along the bridge has the advantages of reducing construction difficulty greatly, being fast in progress of works and small in interference factors, avoiding influence on the city traffic due to navigation blocking and road blocking, being free from large-scale arrangement of scaffolds, saving construction cost greatly and producing good economic benefit.
Description
technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a construction method for laying gas pipelines along bridges with simple construction means, low construction difficulty and low cost. Background technique [0002] With the development of energy conservation, emission reduction and clean energy, natural gas has entered thousands of households. In the construction of gas pipeline networks in cities and towns, it is inevitable to cross rivers and other places. The construction of pipeline layout is much more difficult than that on the ground. , and the danger has also increased a lot. At present, there are six construction methods for gas pipelines crossing rivers: large excavation trench buried pipe crossing, directional drilling crossing, truss laying, arch pipe laying and self-spanning, and bridge-spanning laying. There are six construction methods. Each construction method has different shortcomings. ...
Claims
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IPC IPC(8): F16L1/12
Inventor 余才林方旭彬谈念庐桂提刚郑明华
Owner 浙江国联设备工程有限公司
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