ABSTRACT
Dr Nakamura explained that the trans Tokyo Bay bridge was designed in continuous sections, each composed of 9 to 11 spans. Th e crossing includes a suspension bridg e having a span o f 199 0 m.
In respons e t o a questio n abou t ho w th e rubbe r bearings describe d i n th e paper hav e been designe d t o have higher values o f damping , th e autho r explained that constituent s ha d been adde d t o the rubbe r when i t was manufactured , so that the resultin g materia l of th e typ e (b ) bearing shown i n Figure 9 had increased the hysteresis. Th e type (c ) bearing had a steel ring which strengthened the connectio n between th e rubber and stee l plate . Thi s bearing did not have high damping .
