RADIATION SHIELDING STRUCTURE OF CONCRETE STRUCTURE

Japanese Patent JP3845152

B2

PROBLEM TO BE SOLVED: To prevent penetration into a wall body of a crack by burying a crack induction material, to which guide plates droopingly provided in a crank shape from the cormecting site of a shielding section and an extending section to both sides are installed, at the central section of the wall body of a concrete structure.
SOLUTION: A shielding plate 21 is constituted by unifying guide plates 22, 22 droopingly provided so that cross sections are formed in an approximately crank shape at a regular interval in the horizontal direction on both side faces and extending plates 23. The shielding plate 21 is disposed so that each guide plate 22, 22 is directed in the direction of the penetration of a wall body 10 at the sectional center of the wall body 10. A plurality of the shielding plates 21 are arranged at regular intervals, in which the wall thickness W, etc., of the wall body 10 are considered. When the raw material of a crack induction body 20 is formed of a metal such as iron, lead, a radiation shielding effect can be imparted. Consequently, cracks 11, 11 generated among the guide plates 22 and the wall body 10 can be limited in length reaching a wall core from the surface of the wall body 10 by stress generated in concrete. Accordingly, reliability on the radiation shielding effect can be improved.

Hiroshi Otani

JP26249896A

November 15, 2006

September 11, 1996

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Tokyu Construction Co., Ltd.

E04B1/92; E04H9/14; G21C11/02; G21F3/00; (IPC1-7): E04B1/92; E04H9/14; G21C11/02; G21F3/00

JP6341175A
JP5239868A
JP62169092A

Sakuo Yamaguchi
Yuichi Kasai
Masaharu Yokoyama

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