REINFORCING METHOD OF EXISTING BUILDING FOUNDATION BY INCLINED SHAFT

摘要

PROBLEM TO BE SOLVED: To provide a reinforcing method of an existing building foundation in future by using an inclined shaft firmly resistant to horizontal force such as earthquake force. ;SOLUTION: An inclined shaft 1 is arranged in the ground near the foundation of an existing building and the pile head of the inclined shaft 1 and the foundation of the existing building are connected together so that load is transmissible. In this case, inclined shaft construction work is attended with such process as excavating the ground with a casing pipe 11 provided with a digging pit 12 on its end periphery by intruding it into the ground by inclining it by the angle of the inclined shaft 1 with respect to the vertical line, sliming the interior of the excavation hole after excavation, erecting a ready-made pile in the interior of the casing pipe 11, filling the interior of the casing pipe 11 with a filler 15, pulling up the casing pipe 11 to the top of the anchoring portion and pressurizing the filler 15 on the anchoring portion, pulling up the casing pipe 11 to the ground and removing it, and curing the filler 15 until its specific strength is generated.;COPYRIGHT: (C)1999,JPO