Prefabricated unit assembly structure for large-volume underground structures

Abstract

The invention discloses a prefabricated unit assembly structure of a large-volume underground structure, which comprises an intermediate unit, an end unit and a connecting unit, and the intermediate unit and the intermediate unit, and the intermediate unit and the end unit respectively pass through the The first grouting hole is formed after the connecting unit is assembled, the intermediate unit, the end unit and the connecting unit are fixedly connected by horizontal positioning bolts, and the intermediate unit, the end unit and the connecting unit The joints of the units are respectively covered with upper cover plates, and the upper cover plates are fixedly connected with the joints by vertical fastening bolts. The present invention realizes the prefabrication and assembly of large-volume accident oil pools or fire-fighting pools that have not been practiced in substations at present, and only needs simple operations such as bolt fastening and post-grouting after factory processing and on-site assembly. This method not only facilitates transportation and hoisting, but also greatly improves construction efficiency.

Description

technical field [0001] The invention relates to the technical field of substation construction, in particular to a prefabricated unit assembly structure of a large-volume underground structure. Background technique [0002] In the existing power transmission and transformation projects, more and more substation structures adopt prefabricated structures. [0003] In practical applications, prefabricated structures are still not widely used in all outdoor structures of indoor substations. They are only used in enclosure walls, cable trenches, small accident oil pools (integral assembly), and small finished water supply and drainage facilities such as finished rainwater inlets. The prefabricated structure has been developed, and so far, there has been no practical case of large-scale underground accident oil pools and fire pools. [0004] The main reason for the above situation is that the overall assembly weight of the large-volume accident oil tank is too large. For example,...

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Problems solved by technology

[0006] In view of the above-mentioned defects of the prior art, the technical purpose of the present invention is to solve the inconvenient overall processing, transportation and hoisting of large-volume structures in the factory, resulting in the delay in realizing prefabricated assembly of such structures and seriously affecting the full assembly of substations.

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