CONCRETE FILLED COLUMN WITH DOUBLE STEEL TUBE AND CONSTRUCTION METHOD OF UNDERGROUND STRUCTURE USING THE SAME

摘要

PURPOSE: A concrete charge post with a double steel pipe and an underground structure construction method using the same are provided to shorten the construction period by building a structure on the ground at the same time as construction of an underground structure. CONSTITUTION: A concrete charge post comprises a hollow inner steel pipe(10), an outer steel pipe(12), and a filler(14). The outer steel pipe is installed to surround the inner steel pipe with a gap. The filler is filled between the inner steel pipe and the outer steel pipe.