Novelbridge crane beam bearing platform structure of underground power house and construction method of novel bridge crane beam bearing platform structure

Abstract

The invention discloses a novel bridge crane beam bearing platform structure of an underground power house and a construction method of the novel bridge crane beam bearing platform structure. The novel bridge crane beam bearing platform structure comprises a rock mass and a cantilever beam, wherein the cantilever beam is divided into an embedding section and a cantilever section; an embedding groove is excavated in the rock mass; an embedding section of the cantilever beam is embedded in the embedding groove; the cantilever beam comprises longitudinal ribs and stirrups; the longitudinal ribs are sleeved with the stirrups, are distributed in the periphery of the cantilever beam and extend out of the end face of the embedding section of the cantilever beam; a plurality of first embedding channels are formed in the end of the embedding section, and the longitudinal ribs are embedded in the first embedding channels. The embedding grooves embedded in the embedding section of the cantileverbeam is excavated in the rock mass, and by embedding the cantilever beam in the rock mass, stability of the bridge crane beam bearing structure is improved, and the problem of structural instability of the rock anchor beam due to plastic damage between the rock wall and an inclined platform when quality of the rock wall is poor in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of underground powerhouse construction of water conservancy and hydropower technology, in particular to a novel underground powerhouse bridge crane beam bearing platform structure and a construction method thereof. Background technique [0002] The hoisting of electromechanical equipment in the underground workshop of a large hydropower station requires a bridge crane. As the bearing structure of the bridge crane, the girder bearing platform of the bridge crane must be able to adapt to the load of the bridge crane. Most of the existing plant rock bearing platforms are rock anchor beam reinforcement structures, that is, the rock anchor beam is placed on the inclined step surface of the rock mass, and through the anchoring force between the anchor rod and the rock mass and the friction between the rock anchor beam and the rock wall The force keeps the beam stable and, by penetrating the anchor cables, provides...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a new type of bearing platform structure for the crane girder of the bridge crane of the underground powerhouse. The stability of the load-bearing structure

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