| 摘要 |
<p>PROBLEM TO BE SOLVED: To contribute to shortening of a construction period and reduction in construction cost with reusability, by reinforcing a required place with excellent working efficiency, when reinforcing arbitrary one or two or more of places in the axial direction of a steel pipe from the steel pipe inside.SOLUTION: A reinforcement device 1 (1A, 1B and 1C) for reinforcing structural strengh to a local load by supporting a steel pipe inner surface 102 corresponding to a local load action point of a steel pipe 100 for receiving the local load to a side surface 101, is detachably installed inside the steel pipe. The reinforcement device is provided with a plurality of support parts 11 having respectively a support surface 11a of substantially equivalent curvature to the steel pipe inner surface and arranging the support surface outward with a steel pile axis A as the center and a moving mechanism for relatively moving the plurality of support parts in the radial direction so that the plurality of support parts are collected-distributed with the steel pipe axis as the center, and the support surface is formed as a maximum diameter part with the steel pipe axis as the center, and the support surface is allowed to abut on the steel pipe inner surface in response to the expansion of a diameter of the maximum diameter part by the moving mechanism, and can be installed on the steel pipe inside.</p> |
