BURYING CONSTRUCTION METHOD FOR SUPPLEMENTARY STUD IN REVERSE CONCRETING CONSTRUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To strongly connect an existing pile to a supplementary stud and perform connection work speedily and at low cost in using the existing pile as a foundation pile to construct the supplementary stud on the existing pile in a reverse concreting construction method for a large-scaled building. SOLUTION: In driving a foundation pile 1 under the ground surface at a building column standing position, and erecting a supplementary stud 2 on the foundation pile 1 to execute a reverse concreting construction method, an existing pile (steel pile) 1 is used as the foundation pile, and after driving this existing pile, concrete 3 is placed inside a head part of the existing pile 1, the supplementary stud 2 is constructed on the existing pile 1 using a supplementary stud erecting jig 15, and a lower part of the supplementary stud 2 is inserted into the concrete 3. Otherwise, the head part of the existing pile 1 and the lower part of the supplementary stud 2 are connected to each other to be fixed by a steel basket and concrete. Otherwise, the existing pile 1 and the supplementary stud 2 are preliminarily integrated, and after they are constructed, concrete is filled into the supplementary stud and the head part of the existing pile 1.