UNDERGROUND CONTINUOUS WALL REINFORCING STRUCTURAL MEMBER AND H STEEL ADOPTED THEREIN

摘要

PURPOSE: To make it possible to cast concrete easily and secure the required strength of a web for a reinforced structural body by boring two rows of long holes in jig zag on the web of H steel or wide flange beams. ;CONSTITUTION: Two rows of long holes 4a and 4b are laid out in jig zag on a web 3 of H steel 1 in such a fashion that they may avoid virtual truss portions 5. The elevation of the upper edge of the long holes 4a which form one of the rows and the elevation of the lower edge of the long holes 4b which form the other row are formed so that they may be substantially identical to each other. A large number of H steel is vertically installed into an excavated ditch EO in the direction of the ditch and their flanges 2 are but-welded so that they may be interconnected. A tremie pipe is inserted into one cylindrical space enveloped with two H steel and concrete in cast. During this operation, concrete drops continuously into the adjacent cylindrical spaces by way of the long holes 4a from the space, which prevents drop the generation of a supply state with a head.;COPYRIGHT: (C)1994,JPO&Japio