Support structure for supporting foamable material on hollow structural member

摘要

A support structure including a foamable material located in a cavity of a hollow structural member for blocking the cavity of the hollow structural member when it is foamed by external heating, and a support member for supporting the foamable material. The foamable material has a plate-like shape and has an external dimension smaller than the dimension of the cross section of the cavity. The support member is disposed in the cavity and mounted on the hollow structural member by a mounting device. The support member is constituted of a pair of support plates for supporting both side surfaces of the foamable material and a desired number of connecting pieces located along a lower periphery of the support plates for integrally connecting the support plates. The support plates are adapted to be elastically spread and narrowed about the connecting pieces and being directed to an exterior surface of the hollow structural member at an upper periphery thereof.