STRUCTURE AND METHOD FOR JOINING STEEL FRAME AND CAST-IN-PLACE ROUND PILE TOGETHER

摘要

PROBLEM TO BE SOLVED: To enhance the construction performance of pile work by securing the strength of a cast-in-place round pile for bearing steel columns even if a space between the steel columns is narrow.SOLUTION: In a joining structure 10, lower ends of a pair of the steel columns 20A and 20B are embedded in the upper portion of the cast-in-place round pile 30. The joining structure 10 is constituted by the following steps that: a drilled hole 2 is formed; the one steel column 20B is held in the drilled hole 2 in such a manner that the lower end is positioned above a top surface of the cast-in-place round pile 30; a tremie pipe is inserted into a position corresponding to the other steel column 20A in the drilled hole 2; concrete 22 constituting the cast-in-place round pile 30 is placed in the drilled hole 2 through the tremie pipe; the lower end of the one steel column 20A is embedded in the concrete 22; the tremie pipe is removed; and the lower end of the other steel column 20A is embedded in the concrete.