A concrete pouring method to reduce the deformation of structural modules

Abstract

The invention provides a concrete pouring method for reducing the deformation of the structural modules. Vertical steel partitions with diversion holes are arranged at the joints of the horizontal and vertical walls of the structural modules. First, the steel partitions are used according to the shape and internal structure of the structural modules In order to divide the boundary line, divide the wall pouring unit, seal the diversion hole on the steel partition, and the closed space formed by the steel partition is used as a separate node pouring unit; then layer the structural modules to determine the concrete pouring height of each layer; and then Lay pump pipes at the discharge port of each pouring unit, pour the wall pouring units of the first floor in turn, and then finish the node pouring units of the first floor in turn, the total time should not exceed the initial setting time of concrete; finally Repeat the same method to pour the second layer, the third layer... until the top level is poured; the concrete of the latter layer should be poured before the initial setting of the concrete of the previous layer. The method provided by the invention reduces the deformation of the wall body, has high pouring efficiency and strong implementability.

Description

technical field [0001] The invention relates to an anti-deformation construction technology of a structural module in the modular construction of a third-generation nuclear power plant, in particular to a self-compacting concrete pouring technology in the structural module. Background technique [0002] Structural modules are widely used in the construction of advanced third-generation nuclear power plants. The structural main body of the two major nuclear island main plants, the containment plant and the auxiliary plant, are both composed of large structural modules. crucial impact. After the modular units are prefabricated and assembled in the factory, they are transported to the site of the nuclear island as a formwork for pouring self-compacting concrete, which can reduce a lot of cross-work on site and greatly improve construction efficiency. The construction period compression of the third-generation nuclear power largely depends on this rational use of the structure....

AI Technical Summary

Problems solved by technology

[0003] However, due to the greater fluidity and longer initial setting time of self-compacting concrete, the poured concrete will generate much greater lateral pressure on the steel plate than ordinary concrete. In order to prevent excessive deformation of the module wall, self-compacting concrete The pouring speed is extremely slow, the height of the uninitial concrete can never exceed 2.1m, the pouring time of a single wall can be tens of hours, and the pouring time of the whole module can even last hundreds of hours, which will affect the construction site arrangement, personnel deployment, machinery Use, etc. bring great difficulty and waste of resources

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