Large-span inverted siphon slope section pressure steel pipe construction method
A technology of penstock and construction method, which is applied in the directions of pipeline laying and maintenance, pipes/pipe joints/pipes, mechanical equipment, etc., and can solve the problems affecting the precision of the axis and centerline of penstocks, the cumbersome adjustment of the height of the steel tube and the axis, and the processing of butt joints. Insufficient perfection and other problems to achieve the effect of ensuring efficiency, improving construction efficiency, and reducing installation deviation
Pending Publication Date: 2022-07-05
CHINA RAILWAY NO 3 GRP CO LTD +2
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Problems solved by technology
[0003] However, in the traditional penstock construction of the slope section, the penstocks are hoisted to the installation location one by one in order for assembly and welding to complete the installation and construction of the penstocks. However, during the installation process, the distance between every two penstocks The docking treatment is not perfect, which is easy to affect the accuracy of the axis and center line of the penstock construction, and the height and axis adjustment of the steel pipe is too cumbersome and not accurate enough, resulting in large deviations
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[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0035] In the embodiment of the present invention, a construction method for a large-span inverted siphon slope section penstock, the construction method includes the following steps:
[0036] S1. Construction preparation
[0037] Before the installation of the steel pipe, the pouring of the buttress and the pier should be completed, and then the measurement and lofting should be carried out;
[0038] Among them, when the pier foundation is poured, the foundati...
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The invention relates to the technical field of water conservancy projects, and particularly discloses a large-span inverted siphon slope section pressure steel pipe construction method which comprises the following steps: S1, construction preparation; s2, initial mounting section hoisting; s3, installing a winch; s4, pipe joints are installed; s5, mounting a pressure steel pipe support hanger; s6, the initial installation section is installed; s7, other pipe sections are installed; and S8, dismounting the temporary tool fixture, and repairing the defects of the pipe wall. When the pressure steel pipe is constructed on the slope section, the height and the axis of the pipe joint can be accurately adjusted, the installation deviation is reduced, the assembling accuracy and firmness of each section of the steel pipe are ensured, the problem that in the pressure steel pipe assembling process, the center line and inclination errors are large, and consequently the construction efficiency is poor is solved, and the construction efficiency is improved. And the joint pressing of the circular seam butt joint pipe orifice of each section of steel pipe is performed in two surfaces from the upper center to the lower center, so that the butt joint efficiency is ensured, the assembling accuracy of each section of pressure steel pipe is high, and the construction efficiency of the pressure steel pipe on the slope section is improved.
Description
technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a construction method for a large-span inverted siphon slope section pressure steel pipe. Background technique [0002] The pressure steel pipe is a water pressure steel pipe, which is a steel pipeline used to convey extremely high water pressure water flow. The steel pipe is a closed environment, and the strength of the water flow can be controlled by the switch of the water gate or fence. Control, the earliest penstocks are not in the form of steel pipes, but in the form of long channels, so the term penstocks was first called pressure pipes, and the present invention is a construction method for penstocks for large-span inverted siphon slope sections. [0003] However, in the traditional construction of the pressure steel pipe in the slope section, the pressure steel pipe is hoisted to the installation position one by one in sequence for assembly and weld...
Claims
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IPC IPC(8): F16L1/024F16L1/06F16L1/09
CPCF16L1/0246F16L1/06F16L1/09Y02E10/20
Inventor 邓飞许伟舟游元明赵建兵周鹏刘新伍赵全海梁福平刘洋
Owner CHINA RAILWAY NO 3 GRP CO LTD