Method for mounting internal girder structure of nuclear island at nuclear power station

Abstract

The invention relates to a method for mounting an internal girder structure of a nuclear island at a nuclear power station, which is to solve the problems of high work load, long term of construction work and insecurity when the internal girder structure of the nuclear island at the nuclear power station is mounted. The invention provides the method for mounting the internal girder structure of the nuclear island at the nuclear power station, comprising the following steps of: assembling all parts of a platform structure on the ground; hanging a girder to be mounted to a certain height and putting the platform structure under the girder, wherein the platform structure is not interfered with the girder; vertically mounting an upright post on a side wall of the girder to be mounted, hanging the platform structure on the girder to be mounted through a hanging device, and fixing the hanging device at a part between two mounting positions of the platform structure on the girder to be mounted; together hanging the girder to be mounted and the platform structure and mounting the girder to be mounted on an end girder; and moving the platform structure to the mounting position of the platform structure through a pull device and mounting the platform structure on a lower end surface of the upright post. In the mounting method, the platform structure is not damaged, the work load is low, the term of construction work is short, the security is high and the cost is low.

Description

technical field [0001] The invention relates to a method for installing the internal structure of a nuclear island of a nuclear power plant, in particular to a method for installing a main girder structure of a circular bridge crane in the nuclear island of a nuclear power plant. Background technique [0002] The bridge structure of the ring bridge crane in the nuclear island of the nuclear power plant is formed by two main girders and two end girders, and the main girders of the two main girder structures are erected on the end girders in the nuclear island in parallel. Each main beam structure also includes two platform structures installed on the main beam through columns installed on the side walls of the main beam, and the installation positions of the two platform structures on the main beam are close to the two ends of the main beam. The four platform structures on the two main beam structures together form a four-corner platform of the bridge structure, so that when ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the current problems of damage to the platform structure when installing the main beam in the nuclear island of a nuclear power plant, and the problems of heavy workload, long construction time, and unsafety, the present invention proposes a method for installing the main beam structure in the nuclear island of a nuclear power plant. The method includes the following steps:

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