Disclosed is a reinforcing member, which comprises a woven body formed by
a weaving process, or a tape-shaped or sheet-shaped body, having a high
ductility and high bendability. The reinforcing member is adapted to be
installed on a surface of a structure member or a boundary portion of the
structure member, or inside a structure member, to reinforce the
structure member. The woven body, or a tape-shaped or sheet-shaped body,
has a Young's modulus equal to or less than that of the structure member,
and a tensile fracture strain of 10% or more. The Young's modulus of the
reinforcing member is preferably in the range of 1/2 to 1/20, more
preferably 1/5 to 1/10, of that of the structure member. Specifically,
the Young's modulus of the woven body is preferably in the range of 500
to 50000 MPa, more preferably 1000 to 10000 MPa. The present invention
also provides a reinforced structure using the above reinforcing member.