| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete block, and a connection structure and a connection method therefor such that concrete blocks can be connected speedily in vertical directions and length directions when installed without damaging a seal material fitted to a connection part and, in some cases, without requiring tension connection, bolt connection, etc., and also have large resistance against shearing force, bending force, etc., generated in the concrete blocks owing to land subsidence, an earthquake, etc., after the concrete blocks are installed.SOLUTION: There is provided a concrete block in a U-shaped cross section, an L-shaped cross section, a square-shaped cross section, or a circular-shaped cross section, etc., which is provided with one of a projection and a sheath hollow fitted to the projection in the whole or a part of a horizontal or substantially horizontal edge as a connection part for another concrete block to be connected, the projection or sheath hollow serving as a connection guide part or fitting part for another concrete block. |
