摘要:
A nuclear reactor vessel structure includes an inner peripheral tube-shaped steel plate (4), an outer peripheral tube-shaped steel plate (6), and an intermediate tube-shaped steel plate (5) disposed between the inner and outer peripheral tube-shaped steel plates (4, 6), and is configured to support a nuclear reactor vessel (3) on the inner peripheral side of a tube-shaped structure (2) with concrete (C1, C2) placed between the steel plates. The nuclear reactor vessel structure (1) includes a support (14) having a tube-shaped plate (12) disposed on the inner peripheral side of the intermediate tube-shaped steel plate (5), and an annular plate (13) which protrudes to the inner peripheral side of the tube-shaped plate (12) and to which a radial support key (connection section) (7) connected to the nuclear reactor vessel (3) is affixed. The support (14) is affixed to the concrete (C1), which is placed between the inner peripheral tube-shaped steel plate (4) and the intermediate tube-shaped steel plate (5), by foundation bolts (first bar members) (15) extending in the vertical direction, and the support (14) is also affixed to the inner peripheral tube-shaped steel plate (4) by anchor bolts (second bar members) (16) extending in the radial direction of the tube-shaped structure (2).