Steel concrete structure for reactor containment facility

摘要

The present invention allows to inhibit antiplane deformation of steel plates due to the back pressure generated by water content of the concrete, and allows observation of the concrete during a service period.;In a steel concrete structure including an inner steel plate exposed to a high temperature environment, an outer steel plate, studs and concrete, a steam discharging pipe and a pipe opening are provided. The steam discharging pipe includes small openings. Water content inside the concrete evaporates in a state the temperature of the concrete reaches approximately 100° C., becomes steam, is concentrated in the vicinity of the rear surface of the steel plate, and is discharged to the outside of a containment vessel from the small openings through the steam discharging pipe.

主权项

1. A steel concrete structure for a reactor containment facility comprising a pair of steel plates composed of an inner steel plate having a first thickness and exposed to a high temperature environment and an outer steel plate having a second thickness and mutually opposingly arranged at an interval, a plurality of studs arranged on a surface of each steel plate in touch with concrete, and the concrete filled between the steel plates,
wherein a discharging opening for discharging steam is provided in the outer steel plate having the second thickness, and wherein the outer steel plate has a thickness greater than the second thickness arranged around the discharging opening in the outer steel plate.