Bi-Prestressing Construction Method
The Bi-Prestressing Construction Method is one of our developed construction technologies. We constructed a bridge by this particular method for the first time in Japan in 1985. We are the leading company of this construction method. More than
700 bridges have now been completed applying this method.
The Bi-Prestressing Construction Method combines the two (Bi-) prestressing procedures: the conventional procedure of pretensioning or posttensioning of steel wire to generate compressive stresses to the concrete and the innovative procedure of postcompressioning of steel bar to generate tensile stresses to the concrete.
The Bi-Prestressing Construction Method combines the two (Bi-) prestressing procedures: the conventional procedure of pretensioning or posttensioning of steel wire to generate compressive stresses to the concrete and the innovative procedure of postcompressioning of steel bar to generate tensile stresses to the concrete.
The advantageous characteristics of the Bi-Prestressing Construction Mehod are, for
instance, as follows:-
- to permit the height of the beams to be lower;
- to permit the weight of the beams to be lighter;
- to permit the length of the bridge span to be longer; and
- to permit the number of the beams to decrease.
Kawabata Service Road Bridge, the first Bi-Prestressing Construction Method bridge in Japan
City Hall Bridge, the first Bi-Prestressing Construction Method continuous span bridge in Japan
