Integrated directly-buried double-pipe fixing joint for directly-buried heat supply pipeline and calculation method of integrated directly-buried double-pipe fixing joint

Abstract

The invention relates to an integrated directly-buried double-pipe fixing joint for a directly-buried heat supply pipeline and a calculation method of the integrated directly-buried double-pipe fixingjoint. The double-pipe fixing joint is characterized by comprising a double-pipe fixing joint body composed of an H-shaped component, a water supply pipe section and a water return pipe section, andthe H-shaped component is composed of a web and two wing plates; a water supply pipe section hole and a water return pipe section hole are formed in the web of the H-shaped component, and the water supply pipe section and the water return pipe section penetrate through the water supply pipe section hole and the water return pipe section hole respectively and are symmetrically arranged on the frontside and the back side of the web; a plurality of rib plates are symmetrically arranged on the front side plate surface and the back side plate surface of the web, surround the water supply pipe section and the water return pipe section, are uniformly and symmetrically arranged in the radial direction of the water supply pipe section and the water return pipe section and are connected between thewater supply and return pipe sections and between the water supply and return pipe sections, the wing plates and the side edge of the web; and the outer side of the fixing joint body is coated with aheat preservation layer and a protective layer. The calculation method comprises the steps of calculating thrust torque, calculating the size of the wing plates, determining the size of the web and determining the number of the rib plates. The integrated directly-buried double-pipe fixing joint and the calculation method thereof have the advantages that the one-step formed metal structure fixingjoint replaces a steel and concrete structure fixing pier, and the double-pipe fixing joint is small in size and light in weight, is directly buried underground, and is easy and fast to construct.

Description

technical field [0001] The invention relates to the technical field of fixed piers for direct-buried heating pipelines, in particular to an integrated direct-buried double-pipe fixing joint for directly buried heating pipelines and a calculation method thereof. Background technique [0002] During the laying of direct buried heating pipelines, in order to maintain a firm structure, stable positioning, and no deformation, fixed piers must be set at a certain distance. The fixed pier generally adopts reinforced concrete structure, such as figure 1 As shown, the reinforced concrete fixed pier A0 is formed by pouring two parallel water supply and return water fixing joints B1 and B2 respectively connected to the supply and return water heating pipes into the reinforced concrete pier A1. The water supply and return fixed joints B1 and B2 are the water supply and return pipe sections D1 and D2 respectively with annular plates C in the middle of the outer side and the two ends res...

AI Technical Summary

Problems solved by technology

Therefore, the structural part is an on-site processing assembly. Among them, the water supply and return water fixing joints are prefabricated parts with a protective layer, which requires secondary processing and welding of H-shaped steel, and on-site protection. In addition, the H-shaped steel In the material selection calculation, commercially available general-purpose H-beams with similar values ​​are selected according to the force of the heating pipeline. The specifications of the existing commercially available H-beams cannot fully meet the needs, especially the problem of H-beam instability in application. Concrete needs to be combined to solve

[0007] The application practice shows that the disadvantage of this on-site secondary combination structure is that the on-site connection of H-shaped steel causes complicated construction, which is labor-intensive and time-consuming. In order to overcome the problem of instability, concrete needs to be combined, resulting in a steel-concrete mixed structure after improvement. Although the amount and volume of concrete are greatly reduced, there are still volume occupation, maintenance period, and environmental adaptation brought about by concrete construction. Construction quality and efficiency issues

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