HALF-PRECAST CONCRETE FOUNDATION FOR BASE-ISOLATION DEVICE AND CONSTRUCTION METHOD OF FOUNDATION FOR BASE-ISOLATION DEVICE

摘要

PROBLEM TO BE SOLVED: To solve the problem of a conventional half-precast concrete foundation for a base-isolation device that it is hard to handle due to having weight since the whole is precast, in the present invention.;SOLUTION: A half-precast concrete foundation 1 for a base-isolation device is provided by being half-precast as an outer shell part of a concrete foundation for placing the base-isolation device, that is, as the outer shell part of the foundation for placing the base-isolation device, in which the whole shape is formed in a cylindrical body, a connecting-reinforcing irregular part is formed on an inside wall in an inside space part in a state of being placed in a pile head part, the upper end surface is smoothly formed for the base-isolation foundation top end, an upper opening part of the inside space part is opened on an upper end surface, and a lower opening part of the inside space part is opened larger than the pile head part.;SELECTED DRAWING: Figure 1-A;COPYRIGHT: (C)2017,JPO&INPIT