Steel structure anchor block formed through connection of box iron and water supply and return fixed joints and box iron calculation method

Abstract

The invention relates to a steel structure anchor block formed through connection of box iron and water supply and return fixed joints and a box iron calculation method. The anchor block is characterized in that the water supply fixed joint and the water return fixed joint are fixedly connected to be a whole through the four box iron, wherein the four box iron are welded to the tops and the bottoms of a water supply connection pipe and a water return connection pipe in a crossing mode, and located on the two sides, in the longitudinal directions of pipelines, of a water supply annular plate and the water return annular plate. Each box iron is set in a mode that one side box wall of each box iron is attached to the side face of the water supply annular plate or the water return annular plate, and the box bottom of each box iron is attached to the pipe body position of the water supply connection pipe or the water return connection pipe. Vertical box iron bodies serving as rib bars are additionally arranged between the box iron. The calculation method of the box iron specifications comprises the steps that (1) thrust of the fixed joints of a water supply pipeline and a water return pipeline are calculated according to "Urban Heat Supply Direct Burial Hot Water Pipeline Technical Regulations" CJJ / T81-2013; (2) a bending moment generated by the thrust borne by the water supply fixed joint at a box iron welded point to a water return fixed joint box iron welded point is calculated; and (3) the box iron specifications are determined according to Steel Structure Design RegulationsGB50017-2003; and a whole stability requirement and a partial stability requirement of the box iron are testified.

Description

Technical field [0001] The invention relates to a fixed pier for a directly buried heating pipeline, in particular to a steel structure fixed pier for a channel steel connection for water supply and return fixed joints and a channel steel calculation method. Background technique [0002] During the laying of direct-buried heating pipes, in order to maintain a firm structure, stable positioning and no deformation, fixed piers must be installed 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 fixed joints respectively connected to the water supply and return water heating pipes in the reinforced concrete pier body. The structure type of the water supply and return water fixed joints buried in the fixed pier body is that the water supply and return water fixed joints B1 and B2 are respectively provided with the supply a...

AI Technical Summary

Problems solved by technology

In engineering construction, due to site conditions, it is often impossible to make fixed piers that meet the requirements according to the normal size

In addition, the general engineering procedure is to order pipe fittings in advance according to the drawings, so the fixed joints can be provided in time for use, but the unpredictability of the underground site conditions can only be resolved during the construction process, resulting in the normal construction of fixed piers with conventional concrete structures ; In particular, due to constraints such as the construction period, the concrete often does not reach the curing period, which directly affects the performance and quality of the fixed pier, and ultimately affects the firmness and stability of the heating pipeline

[0005] How to improve the structure of the fixed pier and further reduce the volume on the premise of achieving the same function as the existing fixed pier, so as to solve the problems that the size does not meet the requirements during production and the concrete cannot reach the curing period has become the focus of the industry.

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